272
GP328/GP338 Portable Radios Detailed Service Manual 6804110J64-F June, 2002

Motorola Gp328 338 Service Manual

  • Upload
    hankruan

  • View
    4.236

  • Download
    107

Embed Size (px)

Citation preview

Page 1: Motorola Gp328 338 Service Manual

GP328/GP338Portable Radios

Detailed Service Manual

6804110J64-F

June, 2002

Page 2: Motorola Gp328 338 Service Manual

semi-exclu-

rolamissionplica-r the

Computer Software CopyrightsThe Motorola products described in this manual may include copyrighted Motorola computer programs stored inconductor memories or other media. Laws in the United States and other countries preserve for Motorola certainsive rights for copyrighted computer programs, including the exclusive right to copy or reproduce in any form, thecopyrighted computer program. Accordingly, any copyrighted Motorola computer programs contained in the Motoproducts described in this manual may not be copied or reproduced in any manner without the express written perof Motorola. Furthermore, the purchase of Motorola products shall not be deemed to grant, either directly or by imtion, estoppel or otherwise, any license under the copyrights, patents or patent applications of Motorola, except fonormal non-exclusive royalty-free license to use that arises by operation of law in the sale of a product.

Page 3: Motorola Gp328 338 Service Manual

1999, 2000, 2001, 2002 by Motorola, Inc.Motorola Technology Sdn. Bhd. (Co. No. 455657-H)Bayan Lepas FIZ Phase III11900 Penang, Malaysia

Printed in MalaysiaJune, 2002

Page 4: Motorola Gp328 338 Service Manual
Page 5: Motorola Gp328 338 Service Manual

i

SAFETY AND GENERAL INFORMATION

Information and Instructions on RF Energy Exposure and Product SafetyREAD THIS IMPORTANT INFORMATION ON SAFE AND EFFICIENT OPERATION BEFOREUSING YOUR MOTOROLA HANDHELD PORTABLE TWO-WAY RADIO

The information provided in this document supersedes the general safety information contained in user guidespublished prior to June 2001. For information regarding radio use in a hazardous atmosphere please refer to theFactory Mutual (FM) Approval Product Listing Manual or Instruction Card, which is included with radio modelsthat offer this capability.

Compliance with RF Energy Exposure StandardsYour Motorola two-way radio is designed and tested to comply with a number of national and internationalstandards and guidelines (listed below) regarding human exposure to radio frequency electromagnetic energy.This radio complies with the IEEE (FCC) and ICNIRP exposure limits for occupational/controlled RF exposureenvironment at duty cycles of up to 50% talk-50% listen and should be used for occupational use only. In terms ofmeasuring RF energy for compliance with the FCC exposure guidelines, your radio radiates measurable RFenergy only while it is transmitting (during talking), not when it is receiving (listening) or in standby mode. Notethat the approved, supplied batteries for this radio are rated for a 5-5-90 duty cycle (5% talk - 5% listen - 90%standby), even though this radio complies with the FCC occupational exposure limits at duty cycles of up to 50%talk.

Your Motorola two-way radio complies with the following RF energy exposure standards and guidelines:

• United States Federal Communications Commission, Code of Federal Regulations; 47CFR part2 sub-part J

• American National Standards Institute (ANSI) / Institute of Electrical and Electronic Engineers(IEEE) C95. 1-1992

• Institute of Electrical and Electronic Engineers (IEEE) C95.1-1999 Edition• International Commission on Non-Ionizing Radiation Protection (ICNIRP) 1998• Ministry of Health (Canada) Safety Code 6. Limits of Human Exposure to Radio frequency Elec-

tromagnetic Fields in the Frequency Range from 3 kHz to 300 GHz, 1999• Australian Communications Authority Radiocommunications (Electromagnetic Radiation -

Human Exposure) Standard 2001• ANATEL, Brazil Regulatory Authority, Resolution 256 (April 11, 2001) “additional requirements

for SMR, cellular and PCS product certification.”

Operational Instructions and Training GuidelinesTo ensure optimal performance and compliance with the occupational/controlled environment RF energyexposure limits in the above standards and guidelines, users should transmit no more than 50% of the time andalways adhere to the following procedures:

Transmit and ReceiveTo transmit (talk), push the Push-To-Talk (PTT) button; to receive, release the PTT button.

Hand-held Radio OperationHold the radio in a vertical position with the microphone one to twoinches (2.5 to 5 cm) away from the lips.

Body-worn OperationAlways place the radio in a Motorola approved clip, holder, holster, case,or body harness for this product. Use of non-Motorola-approvedaccessories may exceed FCC RF exposure guidelines.

If you do not use a Motorola approved body-worn accessory and are notusing the radio in the intended use position in front of the face, then ensure the antenna and the radio are kept2.5 cm (one inch) from the body when transmitting.

2.5 to 5.0 cm(1 to 2 in.)

Page 6: Motorola Gp328 338 Service Manual

ii

Antennas & BatteriesUse only Motorola approved supplied antenna or Motorola approved replacement antenna.Unauthorized antennas, modifications, or attachments could damage the radio and may violate FCC regulations.

Use only Motorola approved supplied batteries or Motorola approved replacement batteries.Use of non-Motorola-approved antennas or batteries may exceed FCC RF exposure guidelines.

Approved AccessoriesFor a list of approved Motorola accessories please contact your dealer, or local Motorola representative.

ELECTROMAGNETIC INTERFERENCE/COMPATIBILITY

FacilitiesTo avoid electromagnetic interference and/or compatibility conflicts, turn off your radio in any facility whereposted notices instruct you to do so. Hospitals or health care facilities may be using equipment that is sensitive toexternal RF energy.

AircraftWhen instructed to do so, turn off your radio when on board an aircraft. Any use of a radio must be in accordancewith applicable regulations per airline crew instructions.

Medical Devices

• Pacemakers

The Advanced Medical Technology Association (AdvaMed) recommends that a minimum separation of 6 inches(15 centimeters) be maintained between a handheld wireless radio and a pacemaker. These recommendationsare consistent with those of the U.S. Food and Drug Administration.

Persons with pacemakers should:

• ALWAYS keep the radio more than 6 inches (15 centimeters) from their pacemaker when theradio is turned ON.

• not carry the radio in the breast pocket.• use the ear opposite the pacemaker to minimize the potential for interference.• turn the radio OFF immediately if you have any reason to suspect that interference is taking

place.

• Hearing Aids

Some digital wireless radios may interfere with some hearing aids. In the event of such interference, you maywant to consult your hearing aid manufacturer to discuss alternatives.

• Other Medical Devices

If you use any other personal medical device, consult the manufacturer of your device to determine if it isadequately shielded from RF energy. Your physician may be able to assist you in obtaining this information.

Driver SafetyCheck the laws and regulations on the use of radios in the area where you drive. Always obey them.

When using your radio while driving, please:

• Give full attention to driving and to the road.• Use hands-free operation, if available.• Pull off the road and park before making or answering a call if driving conditions so require.

NOTE Nearly every electronic device is susceptible to electromagnetic interference (EMI) if inadequately shielded, designed, or otherwise configured for electromagnetic compatibility.

Page 7: Motorola Gp328 338 Service Manual

iii

OPERATIONAL WARNINGS

For Vehicles With an Air BagDo not place a portable radio in the area over an air bag or in the air bag deployment area. Airbags inflate with great force. If a portable radio is placed in the air bag deployment area and theair bag inflates, the radio may be propelled with great force and cause serious injury tooccupants of the vehicle.

Potentially Explosive AtmospheresTurn off your radio prior to entering any area with a potentially explosive atmosphere, unless it is a radio typeespecially qualified for use in such areas as “Intrinsically Safe” (for example, Factory Mutual, CSA, UL, orCENELEC). Do not remove, install, or charge batteries in such areas. Sparks in a potentially explosiveatmosphere can cause an explosion or fire resulting in bodily injury or even death.

Blasting Caps and AreasTo avoid possible interference with blasting operations, turn off your radio when you are near electrical blastingcaps, in a blasting area, or in areas posted: “Turn off two-way radio.” Obey all signs and instructions.

OPERATIONAL CAUTIONS

AntennasDo not use any portable radio that has a damaged antenna. If a damaged antenna comes intocontact with your skin, a minor burn can result.

BatteriesAll batteries can cause property damage and/or bodily injury such as burns if a conductive material such asjewelry, keys, or beaded chains touch exposed terminals. The conductive material may complete an electricalcircuit (short circuit) and become quite hot. Exercise care in handling any charged battery, particularly whenplacing it inside a pocket, purse, or other container with metal objects.

NOTE The areas with potentially explosive atmospheres referred to above include fueling areassuch as below decks on boats, fuel or chemical transfer or storage facilities, and areaswhere the air contains chemicals or particles, such as grain, dust or metal powders. Areaswith potentially explosive atmospheres are often but not always posted.

!W A R N I N G

!

!C a u t i o n

Page 8: Motorola Gp328 338 Service Manual

iv

Page 9: Motorola Gp328 338 Service Manual

v

Table of Contents

Section 1 Introduction

1.0 Scope of Manual.................................................................................................. 1-12.0 Warranty and Service Support............................................................................. 1-1

2.1 Warranty Period ............................................................................................. 1-12.2 After Warranty Period..................................................................................... 1-12.3 Piece Parts ..................................................................................................... 1-22.4 Technical Support .......................................................................................... 1-2

Section 2 Service Aids

1.0 Recommended Test Tools................................................................................... 2-1

Section 3 Power Up Self-Test

1.0 Error Codes ......................................................................................................... 3-1

Section 4 Controller Information

1.0 Overview.............................................................................................................. 4-12.0 Radio Power Distribution ..................................................................................... 4-13.0 Controller Board................................................................................................... 4-2

3.1 General........................................................................................................... 4-23.2 Digital Architecture ......................................................................................... 4-33.3 Controller Schematics (330-400MHz for 8485726Z01, 403-470MHz for

8480450Z03 & 450-527MHz for 8485641Z02)............................................... 4-5Complete Controller Schematic Diagram ............................................................... 4-5Controller ASFIC/ON_OFF Schematic Diagram .................................................... 4-6Controller Micro Processor Schematic Diagram .................................................... 4-7Controller Memory Schematic Diagram ................................................................. 4-8Controller Audio Power Amplifier Schematic Diagram ........................................... 4-9Controller Interface Schematic Diagram .............................................................. 4-103.4 Controller Schematics (330-400MHz for 8485726Z04, 403-470MHz for

8480450Z13 & 450-527MHz for 8485641Z06)............................................. 4-11Complete Controller Schematic Diagram ............................................................. 4-11Controller ASFIC/ON_OFF Schematic Diagram .................................................. 4-12Controller Micro Processor Schematic Diagram .................................................. 4-13Controller Memory Schematic Diagram ............................................................... 4-14Controller Audio Power Amplifier Schematic Diagram ......................................... 4-15Controller Interface Schematic Diagram .............................................................. 4-163.5 Controller Schematics (136-174MHz for 8486062B09 & 8486062B12)....... 4-17Complete Controller Schematic Diagram ............................................................. 4-17

Page 10: Motorola Gp328 338 Service Manual

vi

Controller ASFIC/ON_OFF Schematic Diagram...................................................4-18Controller Micro Processor Schematic Diagram ...................................................4-19Controller Memory Schematic Diagram ................................................................4-20Controller Audio Power Amplifier Schematic Diagram..........................................4-21Controller Interface Schematic Diagram ...............................................................4-223.6 Controller Schematics (136-174MHz) for PCB 8486062B16........................4-23Complete Controller Schematic Diagram..............................................................4-23Controller ASFIC/ON_OFF Schematic Diagram...................................................4-24Controller Micro Processor Schematic Diagram ...................................................4-25Controller Memory Schematic Diagram ................................................................4-26Controller Audio Power Amplifier Schematic Diagram..........................................4-27Controller Interface Schematic Diagram ...............................................................4-283.7 Controller Schematics (29-42/35-50MHz) ....................................................4-29Controller Hierarchical Diagram............................................................................4-29Complete Controller Schematic Diagram..............................................................4-30Controller ASFIC/ON_OFF Schematic Diagram...................................................4-31Controller Microprocessor Schematic Diagram ...................................................4-32Controller Interface and Memory Schematic Diagram ..........................................4-33Controller Audio Power Amplifier Schematic Diagram..........................................4-34

Section 5 Keypad Board Information

1.0 Theory of Operation .............................................................................................5-12.0 Troubleshooting Chart..........................................................................................5-23.0 Parts List (Keypad Basic).....................................................................................5-34.0 Keypad Board And Schematic Diagram...............................................................5-5

Keypad Board Top and Bottom View (PCB No. 8480574Z05) ...............................5-5Keypad Board Schematic Diagram.........................................................................5-6

Section 6A Model Chart and Test Specifications (403-470 Mhz)

1.0 Model Chart....................................................................................................... 6A-12.0 Specifications .................................................................................................... 6A-33.0 Transmitter ........................................................................................................ 6A-4

3.1 General ........................................................................................................ 6A-44.0 Receiver ............................................................................................................ 6A-6

4.1 Receiver Front-End...................................................................................... 6A-64.2 Receiver Back-End ...................................................................................... 6A-74.3 Automatic Gain Control Circuit .................................................................... 6A-8

5.0 Frequency Generation Circuitry ........................................................................ 6A-95.1 Synthesizer ................................................................................................ 6A-105.2 VCO - Voltage Controlled Oscillator .......................................................... 6A-11

6.0 Notes For All Schematics and Circuit Boards ................................................. 6A-137.0 Circuit Board/Schematic Diagrams and Parts List .......................................... 6A-15

UHF (403-470MHz) Main Board Top Side PCB No. 8480450Z03..................... 6A-15UHF (403-470MHz) Main Board Bottom Side PCB No. 8480450Z03 ............... 6A-16

Page 11: Motorola Gp328 338 Service Manual

vii

UHF Controls And Switches Schematic Diagram ..............................................6A-17UHF Receiver Front End Schematic Diagram....................................................6A-18UHF Receiver Back End Schematic Diagram ....................................................6A-19UHF Synthesizer Schematic Diagram................................................................6A-20UHF Voltage Controlled Oscillator Schematic Diagram .....................................6A-21UHF Transmitter Schematic Diagram ................................................................6A-22UHF Radio Parts List..........................................................................................6A-23

8.0 Circuit Board/Schematic Diagrams and Parts List...........................................6A-26UHF (403-470MHz) Main Board Top Side PCB No. 8480450Z13 .....................6A-26UHF (403-470MHz) Main Board Bottom Side PCB No. 8480450Z13................6A-27UHF Controls And Switches Schematic Diagram ..............................................6A-28UHF Receiver Front End Schematic Diagram....................................................6A-29UHF Receiver Back End Schematic Diagram ....................................................6A-30UHF Synthesizer Schematic Diagram................................................................6A-31UHF Voltage Controlled Oscillator Schematic Diagram .....................................6A-32UHF Harmonic Filter Schematic Diagram ..........................................................6A-33UHF Transmitter Schematic Diagram ................................................................6A-34UHF Radio Parts List..........................................................................................6A-35

9.0 Troubleshooting charts ....................................................................................6A-39Troubleshooting Flow Chart for Controller .........................................................6A-39Troubleshooting Flow Chart for Receiver (Sheet 1 of 2) ....................................6A-40Troubleshooting Flow Chart for Receiver (Sheet 2 of 2) ....................................6A-41Troubleshooting Flow Chart for Transmitter .......................................................6A-42Troubleshooting Flow Chart for Synthesizer ......................................................6A-43Troubleshooting Flow Chart for VCO .................................................................6A-44

Section 6B Model Chart and Test Specifications (136-174 Mhz)

1.0 Model Chart .......................................................................................................6B-12.0 Specifications.....................................................................................................6B-33.0 Transmitter.........................................................................................................6B-4

3.1 General.........................................................................................................6B-44.0 Receiver.............................................................................................................6B-6

4.1 Receiver Front-End ......................................................................................6B-64.2 Receiver Back-End.......................................................................................6B-74.3 Automatic Gain Control Circuit .....................................................................6B-8

5.0 Frequency Generation Circuitry.........................................................................6B-95.1 Synthesizer.................................................................................................6B-105.2 VCO - Voltage Controlled Oscillator...........................................................6B-11

6.0 Notes For All Schematics and Circuit Boards..................................................6B-137.0 Circuit Board/Schematic Diagrams and Parts List...........................................6B-15

VHF (136-174MHz) Main Board Top Side PCB No. 8486062B09 .....................6B-15VHF (136-174MHz) Main Board Bottom Side PCB No. 8486062B09................6B-16VHF (136-174MHz) Main Board Top Side PCB No. 8486062B12 .....................6B-17VHF (136-174MHz) Main Board Bottom Side PCB No. 8486062B12................6B-18VHF Controls And Switches Schematic Diagram...............................................6B-19

Page 12: Motorola Gp328 338 Service Manual

viii

VHF Receiver Front End Schematic Diagram ................................................... 6B-20VHF Receiver Back End Schematic Diagram.................................................... 6B-21VHF Synthesizer Schematic Diagram................................................................ 6B-22VHF Voltage Controlled Oscillator Schematic Diagram..................................... 6B-23VHF Transmitter Schematic Diagram ................................................................ 6B-24VHF Radio Parts List ......................................................................................... 6B-25

8.0 Circuit Board/Schematic Diagrams and Parts List .......................................... 6B-29VHF (136-174MHz) Main Board Top Side PCB No. 8486062B16..................... 6B-29VHF (136-174MHz) Main Board Bottom Side PCB No. 8486062B16 ............... 6B-30VHF Controls And Switches Schematic Diagram .............................................. 6B-31VHF Receiver Front End Schematic Diagram ................................................... 6B-32VHF Receiver Back End Schematic Diagram.................................................... 6B-33VHF Synthesizer Schematic Diagram................................................................ 6B-34VHF Voltage Controlled Oscillator Schematic Diagram..................................... 6B-35VHF Transmitter Schematic Diagram ................................................................ 6B-36VHF Radio Parts List ......................................................................................... 6B-37

9.0 Troubleshooting charts.................................................................................... 6B-41Troubleshooting Flow Chart for Controller ......................................................... 6B-41Troubleshooting Flow Chart for Receiver (Sheet 1 of 2).................................... 6B-42Troubleshooting Flow Chart for Receiver (Sheet 2 of 2).................................... 6B-43Troubleshooting Flow Chart for Transmitter ...................................................... 6B-44Troubleshooting Flow Chart for Synthesizer...................................................... 6B-45Troubleshooting Flow Chart for VCO................................................................. 6B-46

Section 6C Model Chart and Test Specifications (450-527 Mhz)

1.0 Model Chart....................................................................................................... 6C-12.0 Specifications ....................................................................................................6C-23.0 Transmitter ........................................................................................................6C-3

3.1 General ........................................................................................................6C-34.0 Receiver ............................................................................................................6C-5

4.1 Receiver Front-End......................................................................................6C-54.2 Receiver Back-End ......................................................................................6C-64.3 Automatic Gain Control Circuit ....................................................................6C-7

5.0 Frequency Generation Circuitry ........................................................................6C-85.1 Synthesizer .................................................................................................. 6C-95.2 VCO - Voltage Controlled Oscillator .......................................................... 6C-10

6.0 Notes For All Schematics and Circuit Boards ................................................. 6C-127.0 Circuit Board/Schematic Diagrams and Parts List ..........................................6C-13

UHF Band 2 (450-527MHz) Main Board Top Side PCB No. 8485641Z02 ........6C-13UHF Band 2 (450-527MHz) Main Board Bottom Side PCB No. 8485641Z02... 6C-14UHF Band 2 Controls And Switches Schematic Diagram..................................6C-15UHF Band 2 Receiver Front End Schematic Diagram....................................... 6C-16UHF Band 2 Receiver Back End Schematic Diagram ....................................... 6C-17UHF Band 2 Synthesizer Schematic Diagram ...................................................6C-18UHF Band 2 Voltage Controlled Oscillator Schematic Diagram ........................6C-19

Page 13: Motorola Gp328 338 Service Manual

ix

UHF Band 2 Transmitter Schematic Diagram ................................................... 6C-20UHF Band 2 Radio Parts List ............................................................................ 6C-21

8.0 Circuit Board/Schematic Diagrams and Parts List.......................................... 6C-25UHF Band 2 (450-527MHz) Main Board Top Side PCB No. 8485641Z06........ 6C-25UHF Band 2 (450-527MHz) Main Board Bottom Side PCB No. 8485641Z06 .. 6C-26UHF Band 2 Controls And Switches Schematic Diagram ................................. 6C-27UHF Band 2 Receiver Front End Schematic Diagram ...................................... 6C-28UHF Band 2 Receiver Back End Schematic Diagram....................................... 6C-29UHF Band 2 Synthesizer Schematic Diagram .................................................. 6C-30UHF Band 2 Voltage Controlled Oscillator Schematic Diagram........................ 6C-31UHF Band 2 Transmitter Schematic Diagram ................................................... 6C-32UHF Band 2 Radio Parts List ............................................................................ 6C-33

9.0 Troubleshooting charts ................................................................................... 6C-37Troubleshooting Flow Chart for Controller ........................................................ 6C-37Troubleshooting Flow Chart for Receiver (Sheet 1 of 2) ................................... 6C-38Troubleshooting Flow Chart for Receiver (Sheet 2 of 2) ................................... 6C-39Troubleshooting Flow Chart for Transmitter ...................................................... 6C-40Troubleshooting Flow Chart for Synthesizer ..................................................... 6C-41Troubleshooting Flow Chart for VCO ................................................................ 6C-42

Section 6D Model Chart and Test Specifications (330-400 Mhz)

1.0 Model Chart ...................................................................................................... 6D-12.0 Specifications.................................................................................................... 6D-23.0 Transmitter........................................................................................................ 6D-3

3.1 General........................................................................................................ 6D-34.0 Receiver............................................................................................................ 6D-5

4.1 Receiver Front-End ..................................................................................... 6D-54.2 Receiver Back-End...................................................................................... 6D-64.3 Automatic Gain Control Circuit .................................................................... 6D-7

5.0 Frequency Generation Circuitry........................................................................ 6D-85.1 Synthesizer.................................................................................................. 6D-95.2 VCO - Voltage Controlled Oscillator.......................................................... 6D-10

6.0 Notes For All Schematics and Circuit Boards................................................. 6D-127.0 Circuit Board/Schematic Diagrams and Parts List.......................................... 6D-13

330-400MHz Main Board Top Side PCB No. 8485726Z01............................... 6D-13330-400MHz Main Board Bottom Side PCB No. 8485726Z01.......................... 6D-14330-400MHz Controls And Switches Schematic Diagram ................................ 6D-15330-400MHz Receiver Front End Schematic Diagram ..................................... 6D-16330-400MHz Receiver Back End Schematic Diagram...................................... 6D-17330-400MHz Synthesizer Schematic Diagram.................................................. 6D-18330-400MHz Voltage Controlled Oscillator Schematic Diagram....................... 6D-19330-400MHz Transmitter Schematic Diagram .................................................. 6D-20330-400MHz Radio Parts List ........................................................................... 6D-21

Page 14: Motorola Gp328 338 Service Manual

x

8.0 Circuit Board/Schematic Diagrams and Parts List ..........................................6D-24330-400MHz Main Board Top Side PCB No. 8485726Z04 ............................... 6D-24330-400MHz Main Board Bottom Side PCB No. 8485726Z04 .......................... 6D-25330-400MHz Controls And Switches Schematic Diagram.................................6D-26330-400MHz Receiver Front End Schematic Diagram ......................................6D-27330-400MHz Receiver Back End Schematic Diagram ......................................6D-28330-400MHz Synthesizer Schematic Diagram ..................................................6D-29330-400MHz Voltage Controlled Oscillator Schematic Diagram .......................6D-30330-400MHz Transmitter Schematic Diagram...................................................6D-31330-400MHz Radio Parts List ............................................................................6D-32

9.0 Troubleshooting charts....................................................................................6D-37Troubleshooting Flow Chart for Controller .........................................................6D-37Troubleshooting Flow Chart for Receiver (Sheet 1 of 2)....................................6D-38Troubleshooting Flow Chart for Receiver (Sheet 2 of 2)....................................6D-39Troubleshooting Flow Chart for Transmitter ...................................................... 6D-40Troubleshooting Flow Chart for Synthesizer...................................................... 6D-41Troubleshooting Flow Chart for VCO.................................................................6D-42

Section 6E Model Charts and Test Specifications (29-42/35-50Mhz)

1.0 Model Charts..................................................................................................... 6E-11.1 29-42MHz .................................................................................................... 6E-11.2 35-50MHz .................................................................................................... 6E-2

2.0 Specifications .................................................................................................... 6E-33.0 Transmitter ........................................................................................................ 6E-4

3.1 General ........................................................................................................ 6E-44.0 Receiver ............................................................................................................ 6E-6

4.1 Receiver Front-End...................................................................................... 6E-64.2 Receiver Back-End ...................................................................................... 6E-74.3 Automatic Gain Control Circuit .................................................................... 6E-7

5.0 Frequency Generation Circuitry ........................................................................ 6E-85.1 Synthesizer .................................................................................................. 6E-95.2 VCO - Voltage Controlled Oscillator .......................................................... 6E-10

6.0 Notes For All Schematics and Circuit Boards ................................................. 6E-117.0 Circuit Board/Schematic Diagrams and Parts List .......................................... 6E-13

Lowband 29-42/35-50MHz Main Board Top Side PCB No. 8486291A02 ......... 6E-13Lowband 29-42/35-50MHz Main Board Bottom Side PCB No. 8486291A02 ... 6E-14Lowband 29-42/35-50MHz Controls And Switches Schematic Diagram ........... 6E-15Lowband 29-42/35-50MHz Overall Receiver Schematic Diagram..................... 6E-16Lowband 29-42/35-50MHz Receiver Front End Schematic Diagram ................ 6E-17Lowband 29-42/35-50MHz Receiver Back End Schematic Diagram................. 6E-18Lowband 29-42/35-50MHz Synthesizer Schematic Diagram ............................ 6E-19Lowband 29-42/35-50MHz Voltage Controlled Oscillator Schematic Diagram.. 6E-20Lowband 29-42/35-50MHz Transmitter Schematic Diagram ............................. 6E-21Lowband 29-42/35-50MHz Radio Parts List ...................................................... 6E-22

Page 15: Motorola Gp328 338 Service Manual

xi

8.0 Troubleshooting charts ....................................................................................6E-25Troubleshooting Flow Chart for Controller .........................................................6E-25Troubleshooting Flow Chart for Receiver (Sheet 1 of 2) ....................................6E-26Troubleshooting Flow Chart for Receiver (Sheet 2 of 2) ....................................6E-27Troubleshooting Flow Chart for Transmitter .......................................................6E-28Troubleshooting Flow Chart for Synthesizer ......................................................6E-29Troubleshooting Flow Chart for VCO .................................................................6E-30

Section 7 Flex Layout/Schematic Diagrams and Parts Lists

1.0 Keypad-Controller Interconnect Flex ................................................................... 7-12.0 Schematic for Keypad-Controller Interconnect Flex ............................................ 7-13.0 Parts List for Keypad-Controller Interconnect Flex .............................................. 7-24.0 Universal Connector Flex .................................................................................... 7-25.0 Schematic for Universal Connector Flex ............................................................. 7-36.0 Parts List for Universal Connector Flex ............................................................... 7-3

Page 16: Motorola Gp328 338 Service Manual

xii

Page 17: Motorola Gp328 338 Service Manual

1-1

Section 1

INTRODUCTION

1.0 Scope of ManualThis manual is intended for use by service technicians familiar with similar types of equipment. Itcontains service information required for the equipment described and is current as of the printingdate. Changes which occur after the printing date may be incorporated by a complete Manual revisionor alternatively as additions.

2.0 Warranty and Service SupportMotorola offers long term support for its products. This support includes full exchange and/or repair ofthe product during the warranty period, and service/repair or spare parts support out of warranty. Any"return for exchange" or "return for repair" by an authorised Motorola Dealer must be accompanied bya Warranty Claim Form. Warranty Claim Forms are obtained by contacting an Authorised MotorolaDealer.

2.1 Warranty Period

The terms and conditions of warranty are defined fully in the Motorola Dealer or Distributor or Resellercontract. These conditions may change from time to time and the following notes are for guidancepurposes only.

In instances where the product is covered under a "return for replacement" or "return for repair"warranty, a check of the product should be performed prior to shipping the unit back to Motorola. Thisis to ensure that the product has been correctly programmed or has not been subjected to damageoutside the terms of the warranty.

Prior to shipping any radio back to the appropriate Motorola warranty depot, please contact CustomerServices. All returns must be accompanied by a Warranty Claim Form, available from your CustomerServices representative. Products should be shipped back in the original packaging, or correctlypackaged to ensure no damage occurs in transit.

2.2 After Warranty PeriodAfter the Warranty period, Motorola continues to support its products in two ways.

1. Motorola's Accessories and Aftermarket Division (AAD) offers a repair service to both endusers and dealers at competitive prices.

2. AAD supplies individual parts and modules that can be purchased by dealers who are techni-cally capable of performing fault analysis and repair.

NOTE Before operating or testing these units, please read the Safety Information Section in thefront of this manual.

Page 18: Motorola Gp328 338 Service Manual

1-2 Warranty and Service Support

2.3 Piece Parts

Some replacement parts, spare parts, and/or product information can be ordered directly. If acomplete Motorola part number is assigned to the part, it is available from Motorola’s Accessoriesand Aftermarket Division (AAD). If no part number is assigned, the part is not normally availablefrom Motorola. If the part number is appended with an asterisk, the part is serviceable by MotorolaDepot only. If a parts list is not included, this generally means that no user-serviceable parts areavailable for that kit or assembly.

All orders for parts/information should include the complete Motorola identification number. All partorders should be directed to your local AAD office. Please refer to your latest price pages.

2.4 Technical Support

Technical support is available to assist the dealer/distributor in resolving any malfunction which maybe encountered. Initial contact should be by telephone wherever possible. When contactingMotorola Technical Support, be prepared to provide the product model number and the unit’s serialnumber .

Toll-Free

Non-Toll-Free

Country or Territory Number

China 800-810-0976

Indonesia 0800-1-686868

Malaysia 1800-801687

Philippines 1800-16510271

Singapore 1800-4855333

Thailand 1800-225412

Country or Territory Number

China (86-10) 6843-8231

Hong Kong SAR (852) 2966-4188

India (91) 80-658-7677-7678

Indonesia (62-21) 251-3050

Korea (822) 3466-5401

Malaysia (603) 7803-9922

Philippines (63-2) 810-0762

Singapore (65) 486-7171

Taiwan (886) 2-27058000 ext. 6308

Thailand (66) 2254-8388

Vietnam (84) 8-8294091

All Other Countries IDD code + (65) 4855333

Page 19: Motorola Gp328 338 Service Manual

2-1

Section 2

SERVICE AIDS

1.0 Recommended Test ToolsTable 2-1 lists the tools recommended for working on this family of radios. These tools are alsoavailable from Motorola.

Table 2-1: Recommended Test Tools

Motorola Part No. Description Application

6680387A596680387A64

6680387A650180382A31

Extractor, 2-contactHeat controller with safetystand orSafety stand onlyPortable desoldering unit

Removal of discrete surface-mounted devices

6680375A740180386A81

0180386A78

0.025 replacement tip, 5/pkMiniature digital readoutsoldering station (incl. 1/64”micropoint tip)Illuminated magnifyingglass with lens attachment.

For 0180382A31 portable desoldering unit.

0180386A826684253C726680384A981010041A86

1080370B43

Anti-static grounding kitStraight proberBrushSolder (RMA type),63/37, 0.020” diameter1 lb. spoolRMA liquid flux

Used during all radio assembly and disassem-bly procedures

R-1070A

or R-1319A

Shields and surface-mounted component - ICremoval/rework station(order all heat-focus headsseparately)Shields and surface-mounted component - ICremoval/rework stationSMD10000 M.A.P.E.

Removal and assembly of surface-mountedintegrated circuits and shields

Removal and assembly of surface-mountedintegrated circuits and shields

Page 20: Motorola Gp328 338 Service Manual

2-2 Recommended Test Tools

Page 21: Motorola Gp328 338 Service Manual

3-1

Section 3

POWER UP SELF-TEST

1.0 Error CodesTurning on the radio using the on/off volume control starts a self-test routine which checks the RAM,ROM checksum, EEPROM hardware and EEPROM checksum. If these checks are successfullycompleted, the radio will generate the Self-Test Pass Tone. If the self-test is not successful, a “bonk”is heard. Radios with displays are able to display these error messages:

• “RAM TST ERROR” for <RAM Test Error>• “ROM CS ERROR” for <ROM Checksum Error>• “EEPRM HW ERROR” for <EEPROM Hardware Test Error>• “EEPRM CS ERROR” for <EEPROM Checksum Error>

NOTE Radio without display emits only “bonk” (300 Hz) tone if it fails the self-test.

Error Code Explanation Corrective Action

“RAM TST ERROR” RAM Test Failure Retest radio by turning it off and turning it on again. Ifmessage reoccurs, replace RAM (U405).

“ROM CS ERROR” ROM Checksum iswrong.

Reprogram FLASH Memory, then retest. If messagereoccurs, replace ROM (U406).

“EEPRM HW ERROR” Codeplug structuremismatch, nonexistence ofcodeplug.

Reprogram codeplug with correct version and retestradio. If message reoccurs, replace EEPROM(U407).

“EEPRM CS ERROR” Codeplug check-sum is wrong.

Reprogram codeplug.

No Display Display module isnot connectedproperly.Display module isdamaged.

Check connection between main board and displaymodule.

Replace with new display module.

Page 22: Motorola Gp328 338 Service Manual

3-2 Error Codes

Page 23: Motorola Gp328 338 Service Manual

4-1

Section 4

CONTROLLER INFORMATION

1.0 OverviewThis section provides a detailed theory of operation for the radio and its components.

2.0 Radio Power Distribution

Figure 4-1 illustrates the DC distribution throughout the radio board. A 7.5V battery (BATT 7.5V)supplies power directly to the electronic on/off control as UNSWB+. When the radio is turned on,MECH_SWB+ (on/off/volume control) will trigger the electronic on/off control(momentary-on path),then SWB+ is distributed as shown in Figure 4-1. Vdda from 3.3V Vdda regulator will then supply themicroprocessor. Data is then sent to ASFIC_CMP to turn on GCB4(DAC). GCB4 will take over themomentary-on path within 12ms. SWB+ will continue to support the whole board until the radio isturned off.

Radio will be turned-off on two conditions;

1. MECH_SWB+ turned off

2. Low battery

Figure 4-1: DC Power Distribution Block Diagram

Control

On/Off Switch

SWB+Fuse

Low BatteryDetect

Ant. SW

PCIC(ALC)PA, Driver

LI Ion

3.5VReg.

7.5V

Audio PA

4.0V/3.3V

VdddReg.

5V

ASFIC_CMPVCOBIC

FRACTNLVZIF

LCDDriver

5V

RF. AMP, IF AMPExt. RX.

MECH.SWB+

UNSWB+

TX.

VddaReg.

Int/Ext Vdd

R1

R5 R2 R3

Vdda

Accessories20 pin Connector

Keypad/Option Board

Prime Expansion BoardSwitching

Reg.R4

VdddBattery

Reg.

MCU Micro P, ROM& EEPROM

Buffer (NU)

Led

JumpersDual VddRegulatorScheme

Single VddRegulatorScheme

R1 Y Y

R2 N N

R3 N Y

R4 N N

R5 Y N

Vdda Y N

SW. Reg. N N

Page 24: Motorola Gp328 338 Service Manual

4-2 Controller Board

When low battery level is detected by the microprocessor through both conditions above, it will storethe radio personality data to EEPROM before turning off.

3.0 Controller Board3.1 General

The controller board is the central interface between the various subsytems of the radio. It isseparated into digital and audio architectures. The digital portion consists of a special Motorolamicrocontroller (HC11FL0). The audio power amplifier (Audio PA) and audio/signalling/filter/companding IC (ASFIC_CMP) form the backbone of the audio/signalling architecture.

Figure 4-2: Controller Block Diagram

ExternalMicrophone

InternalMicrophone

ExternalSpeaker

InternalSpeaker

SCI to SideConnector

AudioPA

Audio/SignallingArchitecture

To SynthesizerModOut

16.8 MHzReference Clockfrom Synthesizer

Recovered AudioSquelch

To RF BoardSPI

DigitalArchitecture

µP Clock

3.3VRegulator

(Vddd)

RAM

EEPROM

ROM

HC11FL0

ASFIC_CMP

3.3VRegulator

(Vdda)

Page 25: Motorola Gp328 338 Service Manual

Controller Board 4-3

3.2 Digital ArchitectureMCU configurationThere is one common MCU architecture for low-tier as well as for the high-tier products. It covers theConventional and Trunking portables. An open architecture system with the new HC11FL0 as theprocessor is used. Combinations of different size RAM, ROM and EEPROM are available for variousapplication software.

REAL TIME CLOCK (RTC)This radio supports Real Time Clock (RTC) module for purposes of Message Time Stamping andTime Keeping. The RTC module resides in the micro-processor HC11FL0. It is kept alive by a back-up Lithium Ion battery when the primary battery is removed.

Circuit DescriptionThe RTC module which resides in the HC11FL0 is powered by the ModB/Vstby pin and PI6/PI7 formthe crystal oscillator circuit. Clock frequency of 38.4kHz from a crystal oscillator provides thereference signal. In the processor, the frequency is divided down to 1Hz.

As the RTC module is powered separately from the processor Vdd, the RTC is kept alive through theModB / Vstby pin when the radio is switched off. A small button Lithium Ion battery continues to feedthe RTC when the primary battery is removed.

A MOSFET Q416 switches in the LiO supply when Vdd is removed. Q416 also provides isolation fromBOOT_CTRL function in the event of radio program flashing. A small 3.3V regulator is used to chargethe LiO battery.

Figure 4-3: RTC Circuit

LI_ION

R462

R4193

4

2

1 5CR411

1

23

Q416

C434

U4103.3V

32

1

VIN VOUT

VS

S

UNSWB+

R460C435R461

Vddd

HC11FL0

MODAMODB

R420

R426

FL401 C436

C437

PI6

PI7

OUT

IN

GND

38.4kHz

UNSWB+ SWB+

6

4

1

3

2

3

5 1

2

4

CR413R463300

Q417

TEST_POINTTP405

1

BOOT_CTRL

Page 26: Motorola Gp328 338 Service Manual

4-4 Controller Board

ModB/Vstby SupplyUnder various conditions, the supply to the ModB/Vstby would vary. Table 4-1 shows theseconditions and circuits in operation.

Table 4-1: ModB/Vstby Supply Modes

Condition Circuit Operation

Radio On Vdd supply voltage via CR411

Radio Off • Vdd turned off• Q416 gate is pulled low by R462• Q416 is switched on• U410 supplies 3.2V to ModB/Vstby

Primary battery removed • Vdd turned off• Q416 gate is pulled low by R462• Q416 is switched on• LiO battery provides 3.2V to ModB/Vstby

Flash Mode • Boot_Ctrl line pull low• ModA & ModB goes low• Processor in boot-strap mode• Flashing enabled

Page 27: Motorola Gp328 338 Service Manual

4-5

3.3

RTA3

SB3

SB2

OFF_BATT_DATA_OUT

VOL

MECH_SWB+

VS_RAC

KEYPAD_COL

KEYPAD_ROW

OPT_ENA

RDY

LI_ION

RTA1

RTA0

RTA2

SB1

Vdd

a

FLA

T_R

X_S

ND

EX

T_M

IC

5V

RS

SI

BO

OT

_CT

RL

OP

T_S

EL1

OP

T_S

EL2

RS

SI

SC

I_R

X

SC

I_T

X

AU

DIO

_PA

_EN

A

EX

T_M

IC

EX

T_S

PK

R_S

EL

FLA

T_R

X_S

ND

INT

_MIC

SW

B+

UN

SW

B+

Vdd

a

5V

AU

DIO

AUDIO_PA

MEMORY SHIELD

SH400SHIELD

1

ON/OFF SHIELD

SH401SHIELD

1

MICROPIC SHIELD

SH402SHIELD

1

ASFIC/AUDIO PA SHIELD

1

SH403SHIELD

Complete Controller Schematic Diagram

http

://w

ww.m

yrad

io16

8.na

me

Controller Schematics (330-400MHz for 8485726Z01, 403-470MHz for 8480450Z03 & 450-527MHz for 8485641Z02)

INTERFACE

RESET

RX_AUD_RTN

R_W

SWB+

TX_AUD_RTNTX_AUD_SND

URX_SND

VS_AUDSEL

VS_CS

VS_GAINSEL

VS_INT

VS_RAC

Vddd

D6D7

DATA

EXT_MIC

FLAT_RX_SND

FLAT_TX_RTN

INT_EXT_Vdd

KEYPAD_COLKEYPAD_ROW

KEY_INT

LCD_SEL

LEDBL

MISO

OFF_BATT_DATA_OUT

OPT_ENA

PTT

RDY

A0CLK

D0D1D2D3D4D5

Vddd

FLAT_TX_RTN

VS_GAINSEL

DATA

OFF_BATT_DATA_OUT

MISO

VS_RACCLK

EXT_MIC

LCD_SELR_W

SWB+

VS_AUDSEL

VS_CS

FLAT_RX_SND

TX_AUD_SND

OPT_ENA

RX_AUD_RTN

TX_AUD_RTN

RDY

KEYPAD_ROW

URX_SND

INT_EXT_Vdd

KEYPAD_COL

KEY_INT

RESET

PTT

VS_INT

LEDBL

ON

A17

A2A3A4A5A6A7A8A9

A0A1

A10A11A12A13A14A15A16

D7

D0D1D2D3D4D5D6

FLA

SH

_EN

FLA

SH

_OE

RA

M_C

S

R_W

Vdd

d

XA

18

MEMORY

Vdd

d

FLA

SH

_OE

RA

M_C

S

FLA

SH

_EN

R_W

XA

18

LVZIF_SEL

VS_CS

LCD_SEL

VS_CS

Vddd

XA18

RAM_CS

R_W

FLASH_EN

FLASH_OE

LCD_SEL

LVZIF_SEL

A9

D0D1D2D3D4D5D6D7

A1

A10A11A12A13A14A15A16A17

A2A3A4A5A6A7A8

A0

SQ

_DE

T

SW

B+

SY

N

UN

SW

B+

VO

X

RE

SE

T

F12

00

HS

IO

LSIO

MIS

O

BA

TT

_DA

TA

_IN

CH

AC

T

CLK

CS

X

DA

TA

EE

_CS

SCI_RX

SCI_TX

VOL

VS_RAC

OPT_ENA

OPT_SEL1

OPT_SEL2

RDY

RSSI

RTA0

RTA1

RTA2

RTA3

SB1

SB2

SB3

KEYPAD_COL

KEYPAD_ROW

LI_ION

MECH_SWB+

OFF_BATT_DATA_OUT

BOOT_CTRL

VS

_IN

T

PT

T

EM

ER

KE

Y_I

NT

LOC

K

KE

Y_I

NT

PT

T

EM

ER

VS

_IN

T

LOC

K

MICRO_P

5VVdda

RESETBATT_CODE

LI_ION

LOCK

4V_3.3V

CSXMODIN

DATACLK

UNSWB+DEMOD

RSSI16.8MHz

RTA2RTA3

MECH_SWB+VOLPTT

LVZIF_SELSWB+

DACRx

RED_LEDGREEN_LED

SB1SB2SB3

EMERRTA0RTA1

IF_Vdda_CTRL

IF_LVZIF_SEL_CTRL

IF_16.8MHz_CTRL

IF_EMER_CTRL

IF_CSX_CTRL

IF_LI_ION_CTRL

IF_SB3_CTRL

IF_RESET_CTRL

IF_DATA_CTRL

IF_5V_CTRL

IF_BATT_CODE_CTRL

IF_SWB+_CTRL

IF_GREEN_LED_CTRL

IF_SB2_CTRL

IF_VOL_CTRL

IF_4V_3.3V_CTRL

IF_CLK_CTRL

IF_UNSWB+_CTRLIF_LOCK_CTRL

IF_PTT_CTRL

IF_MECHSWB+_CTRL

IF_RTA1_CTRL

IF_RED_LED_CTRL

IF_RTA3_CTRL

IF_MODIN_CTRL

IF_DACRX_CTRL

IF_RTA2_CTRL

IF_SB1_CTRL

IF_RTA0_CTRL

IF_DEMOD_CTRLIF_RSSI_CTRL

16.8MHz

5VVddaRESETBATT_CODELI_ION

LOCK

4V_3.3V

DACRxCSXMODINDATACLK

UNSWB+DEMODRSSI

RTA2RTA3MECH_SWB+VOLPTTLVZIF_SELSWB+

RED_LEDGREEN_LEDSB1SB2SB3EMERRTA0RTA1

TO/FROM RF

C432NU

NUR403

Vdda VdddSWB+

RESET

UNSWB+

MISO

DATA

CSX

CLK

VS_AUDSEL

VS_GAINSEL

Vddd

DEMOD

DACRX

4V_3.3V

VS_AUDSEL

VS_GAINSEL

Vdda

Vddd

LSIO

ME

CH

_SW

B+

MIS

O

MO

DIN

OF

F_B

AT

T_D

AT

A_O

UT

RE

D_L

ED

RE

SE

T

RX

_AU

D_R

TN

SQ

_DE

T

SW

B+

SY

N

TX

_AU

D_R

TN

TX

_AU

D_S

ND

UN

SW

B+

UR

X_S

ND

VO

X

CLK

CS

X

DACRX

DA

TA

DEMOD

EE

_CS

EXT_MIC

EXT_SPKR_SEL

F12

00

FLAT_RX_SND

FLA

T_T

X_R

TN

GR

EE

N_L

ED

HS

IO

INT

_EX

T_V

dd

INT_MIC

LED

BL

16.8

MH

z

4V_3.3V

5V

AUDIO

AUDIO_PA_ENA

BA

TT

_CO

DE

BA

TT

_DA

TA

_IN

CH

AC

T

16.8

MH

z

RE

D_L

ED

RX

_AU

D_R

TN

TX

_AU

D_R

TN

TX

_AU

D_S

ND

UR

X_S

ND

OF

F_B

AT

T_D

AT

A_O

UT

MO

DIN

ME

CH

_SW

B+

LED

BL

INT

_EX

T_V

dd

GR

EE

N_L

ED

FLA

T_T

X_R

TN

BA

TT

_CO

DE

ASFIC

Page 28: Motorola Gp328 338 Service Manual

4-6

Q405

2

4

3

75KR406

UNSWB+

2.7KR427

5

3

1

2

4

CR412

BATT_CODEVddd

BATT_DATA_IN

OFF_BATT_DATA_OUT

Contro

http

://w

ww.m

yrad

io16

8.na

me

0.1uFC428

12

4

3

6

75

U407X25320_2.7V

MISO

8

WP

CLKCS

HOLDSI

SO

VCC

VSS4K x 8 BITEEPROM

100pFC427

R42910K

EE_CS

5V

R4130

47KR400

C4220.1uF

0.1uFC421

Vdda

.01uFC420

SQ

DE

T

GN

DS

YN

HS

IO

LCA

P

LSIO

GC

B0

GC

B1

GC

B2

CLK

CS

X

DA

TA

CH

AC

T17 2319 2418151413 2120 2216

VOX

UIO

VDDA

VDDDAC

PLCAPSQIN

GNDA

DACGDACRDACU

DISC

AGCCAP

7

10

1

11

89

3

654

2

12

U40409Z41

VDDSYN

TXRTN

VDDCPVDDD

NCPLCAP2

SYN

GNDDGNDD0

F1200

GCB3CLK168

VD

DR

CT

XS

ND

UR

XO

UT

MIC

INT

MO

D

GN

DR

CM

ICE

XT

GC

B4

GC

B5

AU

DIO

AU

XR

XA

UX

TX

45 44 3946 404748 37384143 42

TX

_AU

D_S

ND

MO

DIN

AU

DIO

FLA

T_T

X_R

TN

LED

BL

270KR448

220KR446C480

10uF

R4471.5MEG

MECH_SWB+

CR440

1

23

39KR416

13

2

Q403

1

C4020.1uF C403

10uF

3

1

2

Q400

27

36

3233

2625

28

313029

3534

C4160.1uF

SYNF1200

TX_AUD_RTN

16.8MHzRED_LED

C419NU

DA

TA

CLK

CS

X

CH

AC

TS

Q_D

ET

LSIO

HS

IO

EX

T_S

PK

R_S

EL

AU

DIO

_PA

_EN

AG

RE

EN

_LE

D

Vddd

R47624K

OUTPUT

SENSESHUTDOWNVTAP

ERRORFEEDBACK

GN

D

INPUT

LP2951ACMM-3.3U400

4

1

26

5378

C400.01uF

4V_3.3V

NUR402

0R405

SWB+

Vddd

INT

_MIC

EX

T_M

IC

68KR407

TP4061

C4010.1uF

0R401

INT_EXT_Vdd

0.1uFC410

TP410 1 C408100pF

0.1uFC409

0R475

Vdda

RESET

C4110.1uF

DEMOD

24KR449

C47930K

0.1uF

R425

0.1uFC407

R44524K

Vdda

URX_SND

RX_AUD_RTN

VOXVS_AUDSEL

VS_GAINSELDACRx

FLAT_RX_SND

C4300.1uF

.01uFC415

4.7uFC452

0.1uFC414 C451

.022uF

ller ASFIC/ON_OFF Schematic Diagram

Page 29: Motorola Gp328 338 Service Manual

4-7

INT

ddd

Mech_SWB+

RT40033.0K

51KR432

UNSWB+ SWB+

6

4

1

3

2

3

5 1

2

4

CR413R463300

Q417

TEST_POINTTP405

1

BOOT_CTRL

LI_ION

510R419

10KR462

5

3

1

2

4

1

23

Q416

CR411

C4350.1uF 4.7K180

R461 R4600.1uFC434

2

1V

SS

VIN VOUT 3ILC7062CM-33U410

3.3V

UNSWB+Vddd

Controller Micro Processor Schematic Diagram

http

://w

ww.m

yrad

io16

8.na

me

PH1_PW2PH2_PW3PH3_PW4PH4_CSIOPH5_CSGP1PH6_CSGP2PH7_CSPROG

PG1_XA14PG2_XA15PG3_XA16PG4_XA17PG5_XA18PG6_AS

PH0_PW1

PG0_XA13

PC0_DATA0PC1_DATA1PC2_DATA2PC3_DATA3PC4_DATA4PC5_DATA5PC6_DATA6PC7_DATA7

VS

SR

VS

S

VS

SL

PI1

PI2

PI3

PI4

PI5

PI6

PI7

PI0

PF

2_A

DD

R2

PF

3_A

DD

R3

PF

4_A

DD

R4

PF

5_A

DD

R5

PF

6_A

DD

R6

PF

7_A

DD

R7

PF

O_A

DD

R0

PF

1_A

DD

R1

PB

1_A

DD

R9

PB

2_A

DD

R10

PB

3_A

DD

R11

PB

4_A

DD

R12

PB

5_A

DD

R13

PB

6_A

DD

R14

PB

7_A

DD

R15

PB

O_A

DD

R8

AV

SS

XIRQ

PJ1_CSGP4PJ2PJ3PJ4PJ5PJ6PJ7

RESET

PJ0_CSGP3

PG7_R_W

PE1_AN1PE2_AN2PE3_AN3PE4_AN4PE5_AN5PE6_AN6PE7_AN7

PE0_AN0

ECLKIRQ

MODA_LIRMODB_VSTBY

XF

C

XT

AL

VD

D

VD

DL

VD

DR

VD

DS

YN

VR

HV

RL

PD

0_R

XD

PD

1_T

XD

PD

2_M

ISO

PD

3_M

OS

IP

D4_

SC

KP

D5_

SS

PD

6_LV

IN

PA

0_IC

3P

A1_

IC2

PA

2_IC

1P

A3_

IC4_

OC

5_O

C1

PA

4_O

C4_

OC

1P

A5_

OC

3_O

C1

PA

6_O

C2_

OC

1P

A7_

PA

1_O

C1

AV

DD

EX

TA

L

LVO

UT

MC68HC11FL0U409

48944

8996

5857 VST

72737475767778

71 CSGP3CSGP4

66656463626160

67

8713 4055545352515049 56 7010119211587 14272625242322 2928

3031323334353637

46454443424138

47

16201917185

6

979899100

123 7980818283848586 9391 1292696890 95 3988 59

C431100pF 100pF

C449 C453100pF

C423100pF

R41110K 100pF

C456

KEY_INT

RESETR_W

RTA0

RTA2RTA3SB1SB2SB3OFF_BATT_DATA_OUT

RTA1

VS_RACVOL

RSSIVOXKEYPAD_COLKEYPAD_ROW

EMER

OPT_SEL1OPT_ENA

LOCKVS_INT

PTT

C43622pF

GND

INO

UT

2

13

FL401XTAL

22pFC437

330KR426

R42010MEGA4

A3A2A1

A17A16A15A14A13A12A11A10A9A8A7A6A5

A0

D7

D0D1D2D3D4D5D6

LVZIF_SEL

LCD_SEL

VS_CS

RAM_CSFLASH_EN

XA18BATT_DATA_IN

CLKCSX

EE_CS

OPT_SEL2

390nHL410

390nHL411

R437NU

HS

IO

DA

TA

FLA

SH

_OE

SY

N

RD

Y

LSIO

SQ

_DE

TC

HA

CT

MIS

O

R4180

1 1

TP402TEST_POINT

TP401TEST_POINT

SCI_RXSCI_TX

F1200Vddd

10KR409R457

10K

Vddd Vddd

LOW BATT

91KR415

1%

180KR414

1%

.01uFC433 TP415

TEST_PO1

V

Page 30: Motorola Gp328 338 Service Manual

4-8

2

6

18

17

16

15

14

13

3

19

31

1

12

4

5

11

10

20

A11

A10

A9

A8

A7

A6

A5

A4

A3

A2

A1

A0

A14

A17

A16

A15

A13

A12

A9

A17

A2

A3

A4

A5

A6

A7

A8

A1

A10

A11

A12

A13

A14

A15

A16

A0

D7

NC

D0

D1

D2

D3

D4

D5

D6FLA

SH

RO

M

24

GN

D

XA18

D0

D1

D2

D3

D4

D5

D6

D729

9

21

22

23

25

26

27

28

EN_CE

EN_OE

EN_WE

VC

C

FLASH_EN

U406AT49BV0208

30

32

70

R492

NUR408

XA18

C4290.1uF

100KR410

FLASH_OE 2.2R428

C42410uF

VS

S

14

WE

OE

CS

27

22

20

D0

D1

D2

D3

D4

D5

D6

D7

D2

D3

D4

D5

D6

D7

D8

D1

RAM

12

13

15

16

17

18

19

11

A4

A5

A6

A7

A8

A9

A1

A10

A11

A12

A13

A14

A2

A3

A0 VD

D

28U405SRM2B256

6

5

4

3

25

24

9

21

23

2

26

1

8

7

10A0

A1

A2

A3

A4

A5

A6

A7

A8

A9

A10

A11

A12

A13

A14

RAM_CS

C4250.1uF 100pF

C426

Vddd

R47810K

Vddd

R_W

Con

trol

lerM

emor

yS

chem

atic

Dia

gram

Page 31: Motorola Gp328 338 Service Manual

4-9

J403-2

J403-1

J403-3

J403-12

J403-19

J403-16

J403-18

J403-13

J403-8

J403-9

J403-15

J403-14

J403-17

J403-20

J403-7

J403-5

J403-6

J403-4

J403-10

J403-11

GND

INT_SPK+

INT_SPK-

EXT_SPK+

EXT_SPK-

OPT_B+

EXT_MIC

OPT_SEL_2

OPT_SEL_1

GND

RX_DATA

TX_DATA

GND

RSSI

RX_AUDIO/TX_AUDIO

BOOT_CTRL

NC

MIC

GND

GND

VR44510.0V 10.0V

VR446 VR44710.0V 10.0V

VR448 VR44910.0V

J40320 PIN CONNECTOR

68R450

C471100pF C472

100pF C473100pF

SWB+

VR4346.8V

100pFC493

100pFC490

100pFC492

100pFC491

5.6VVR433

R4771K

AU

50V

Controller Audio Power Amplifier Schematic Diagram

http

://w

ww.m

yrad

io16

8.na

me

OPT_SEL2OPT_SEL1

C497100pF

100pFC496

C495100pF C494

100pF

5.6VVR432

FLAT_RX_SND

SCI_RX

SCI_TX

RSSI

BOOT_CTRL

C441100pF

L400390nH

R4212K

INT_MIC

2KR435

C444100pF

R4360

C4404.7uF

100pFC445

390nHL401C443

0.1uF

EXT_MIC

C4420.1uF

10R473

10uFC475 UNSWB+

DIO

0.1uFC447

3.6KR472

0.1uFC448

36KR424

R431470K

VCC1 VCC2

OUT1NEGOUT1POS

OUT2NEGOUT2POS

SELECT

SVR

IN1NEGIN1POS

IN2NEGIN2POS

MODENC2NC3NC4NC5

NC1

GN

D1

GN

D2

6

5

1716

1415

4

R42347K

U420TDA854720 11

791219

183

138

2

1 10

10uFC476

SWB+

R4715.6K

Q41046

1 32AUDIO_PA_ENA EXT_SPKR_SEL

Vdda

R4346.2K

5V

0.1uFC450

VR410.0

Page 32: Motorola Gp328 338 Service Manual

4-1

0

MISO

VS_RAC

D7

D4D5

D3

D6

D2D1D0

Vddd

R_W

RESET

LCD_SEL

LEDBL

KEY_INT

INT_EXT_Vdd

VS_INT

VS_AUDSEL

VS_GAINSEL

FLAT_RX_SNDRX_AUD_RTN

URX_SND

TX_AUD_SND

PTT

SWB+

KEYPAD_ROWKEYPAD_COL

A0

OFF_BATT_DATA_OUT

OPT_ENA

DATA

RDY

FLAT_TX_RTNTX_AUD_RTN

VS_CSEXT_MIC

CLK

J400-23

J400-2

J400-5

J400-20

J400-14

J400-26

J400-17

J400-35

J400-34

J400-33

J400-32

J400-31

J400-13

J400-15

J400-4

J400-9

J400-18

J400-11

J400-40

J400-25

J400-39

J400-28

J400-21

J400-27

J400-37

J400-36

J400-30

J400-29

J400-22

J400-3

J400-19

J400-8

J400-12

J400-6

J400-24

J400-1

J400-38

J400-10

J400-16

J400-7

EXT_MIC

VS_CS

SW_B+VdddVS_AUDSEL

Det_Aud_Snd

Rx_Aud_RtnTx_Aud_Snd

Tx_Aud_Rtn

Flat_Tx_RtnOpt_Bd_En

Rdy/Req

Rx_Aud_Snd

ON

INT_EXT_Vdd

Key_Row

Key_Col

PTT

Key_Intrp

VS_INT

RST*LED_EN

OFF_BATT_DATA_OUT

VS_GAINSEL

SrD_Rtn

SrD_Snd

R/W*CS*DB0

DB1

DB2

DB3

DB4

DB5

DB6

DB7

A0

SCK_Snd

VS_RACGnd

E406

E405

E403

E402

E401

E404

E409

E408

E407

C463100pF

0.1uF

C481

0.1uFC482

0.1uFC467

E400

R48124K

100pF

100pFC458

C466

100pFC459

J40040-PINS CONNECTOR

Con

trol

lerI

nter

face

Sch

emat

icD

iagr

am

Page 33: Motorola Gp328 338 Service Manual

4-11

3.4

AUDIO_PA

SHIELDSH402

1

SHIELDSH403

1

MICROPIC SHIELD ASFIC/AUDIO PA SHIELD

SC

I_T

X

BO

OT

_CT

RL

OP

T_S

EL1

OP

T_S

EL2

RS

SI

SC

I_R

X

SW

B+

UN

SW

B+

Vdd

a

5V

AU

DIO

AU

DIO

_PA

_EN

A

EX

T_M

IC

EX

T_S

PK

R_S

EL

FLA

T_R

X_S

ND

INT

_MIC

RS

SI

Vdd

a

FLA

T_R

X_S

ND

EX

T_M

IC

5V

Complete Controller Schematic Diagram

http

://w

ww.m

yrad

io16

8.na

me

Controller Schematics (330-400MHz for 8485726Z04, 403-470MHz for 8480450Z13 & 450-527MHz for 8485641Z06)

VddaRESETBATT_CODELI_ION

LOCK

4V_3.3V

CLK

UNSWB+DEMODRSSI16.8MHz

LVZIF_SELSWB+DACRxCSXMODINDATA

RTA0RTA1RTA2RTA3MECH_SWB+VOLPTT

RED_LEDGREEN_LEDSB1SB2SB3EMER

5VVddaRESET

BATT_CODELI_ION

LOCK

4V_3.3V

CLKUNSWB+

DEMODRSSI

16.8MHz5V

LVZIF_SELSWB+

DACRxCSX

MODINDATA

RTA0RTA1RTA2RTA3

MECH_SWB+VOLPTT

RED_LEDGREEN_LED

SB1SB2SB3

EMER

R403

Vdda VddaNU

TO/FROM RF

IF_UNSWB+_CTRL

IF_CLK_CTRL

IF_DEMOD_CTRL

IF_SB1_CTRL

IF_16.8MHz_CTRL

IF_GREEN_LED_CTRL

IF_RTA3_CTRL

IF_SWB+_CTRL

IF_SB2_CTRL

IF_RTA2_CTRL

IF_SB3_CTRL

IF_MODIN_CTRL

IF_MECHSWB+_CTRL

IF_PTT_CTRL

IF_CSX_CTRL

IF_EMER_CTRL

IF_DACRX_CTRL

IF_RTA1_CTRL

IF_RED_LED_CTRL

IF_RTA0_CTRL

IF_RSSI_CTRL

IF_LOCK_CTRL

IF_DATA_CTRL

IF_LVZIF_SEL_CTRL

IF_VOL_CTRL

IF_BATT_CODE_CTRL

IF_Vdda_CTRL

IF_LI_ION_CTRL

IF_RESET_CTRL

IF_5V_CTRL

IF_4V_3.3V_CTRL

C432NU

URX_SND

VS_GAINSEL

VS_INT

VS_RAC

INT_EXT_Vdd

KEYPAD_COLKEYPAD_ROW

KEY_INT

LCD_SEL

LEDBL

MISO

OFF_BATT_DATA_OUT

OPT_ENA

PTT

RDY

RESET

R_W

A0CLK

D0D1D2D3D4D5D6D7

DATA

ON

Vddd

FLAT_TX_RTN

VS_GAINSEL

DATA

OFF_BATT_DATA_OUT

MISO

EXT_MIC

LCD_SELR_W

SWB+

VS_AUDSEL

VS_CS

FLAT_RX_SND

TX_AUD_SND

OPT_ENA

RX_AUD_RTN

TX_AUD_RTN

RDY

KEYPAD_ROW

URX_SND

INT_EXT_Vdd

KEYPAD_COL

KEY_INT

RESET

PTT

VS_INT

LEDBL

TX_AUD_RTNTX_AUD_SND

VS_AUDSEL

VS_CS

Vddd

FLAT_TX_RTN

RX_AUD_RTN

SWB+

EXT_MIC

FLAT_RX_SND

INTERFACE

VS_RACCLK

Vdd

d

FLA

SH

_OE

RA

M_C

S

FLA

SH

_EN

R_W

XA

18

A4A5A6A7A8A9

A0A1

A10A11A12A13A14A15A16A17

A2A3R

AM

_CS

R_W

Vdd

d

XA

18

FLA

SH

_EN

FLA

SH

_OE

D0D1D2D3D4D5D6D7

MEMORY

MICRO_P

ASFIC

VS

_IN

T

KE

Y_I

NT

LOC

K

PT

TE

ME

R

KE

Y_I

NT

PT

TE

ME

RV

S_I

NT

LOC

KA14A15A16A17

A2A3A4A5A6A7A8A9

A0A1

A10A11A12A13

LVZIF_SELVS_CS

LCD_SELVS_CS

Vddd

XA18

R_W

LCD_SEL

LVZIF_SEL

RAM_CS

D0D1D2D3D4D5D6D7

FLASH_ENFLASH_OE

UN

SW

B+

VO

X

RE

SE

T

SQ

_DE

T

SW

B+

SY

N

LSIO

MIS

O

CS

X

DA

TA

EE

_CS

F12

00

HS

IO

BA

TT

_DA

TA

_IN

CH

AC

T

CLK

RDY

RSSIRTA0RTA1RTA2RTA3

SB1SB2SB3

SCI_RXSCI_TX

OFF_BATT_DATA_OUT

OPT_SEL1OPT_SEL2

BOOT_CTRL

VOLVS_RAC

KEYPAD_COLKEYPAD_ROW

LI_ION

MECH_SWB+OPT_ENA

RTA3

SB3SB2

OFF_BATT_DATA_OUT

VOLMECH_SWB+

VS_RACKEYPAD_COLKEYPAD_ROW

OPT_ENALI_ION

RTA1RTA0

RTA2

SB1

SHIELDSH401

1

SH400

1

SHIELD

ON/OFF SHIELDMEMORY SHIELD

SWB+RESET

UNSWB+

MISO

DATA

CSXCLK

RDY

16.8

MH

zR

ED

_LE

D

RX

_AU

D_R

TN

TX

_AU

D_R

TN

TX

_AU

D_S

ND

UR

X_S

ND

OF

F_B

AT

T_D

AT

A_O

U

MO

DIN

ME

CH

_SW

B+

LED

BL

INT

_EX

T_V

dd

GR

EE

N_L

ED

FLA

T_T

X_R

TN

BA

TT

_CO

DE

OF

F_B

AT

T_D

AT

A_O

UT

RE

D_L

ED

RX

_AU

D_R

TN

TX

_AU

D_R

TN

TX

_AU

D_S

ND

UR

X_S

ND

FLA

T_T

X_R

TN

GR

EE

N_L

ED

INT

_EX

T_V

dd

LED

BL

ME

CH

_SW

B+

MO

DIN

16.8

MH

z

BA

TT

_CO

DE

VS_AUDSELVS_GAINSEL

VdddDEMODDACRX

4V_3.3VVddd

VS_AUDSELVS_GAINSEL

DEMOD

4V_3.3V

DACRX

RE

SE

T

SQ

_DE

T

SW

B+

SY

N

UN

SW

B+

VO

X

EE

_CS

F12

00

HS

IOLS

IO

MIS

O

BA

TT

_DA

TA

_IN

CH

AC

T

CLK

CS

X

DA

TA

Vdda

EXT_MICEXT_SPKR_SEL

FLAT_RX_SND

INT_MIC

5V

AUDIO

AUDIO_PA_ENA

Page 34: Motorola Gp328 338 Service Manual

4-12

2

4

3

Q405

2

K31

CR412

A1 4

A2 5

A3 6

K13

K2

2.7KR427

75KR406

OFF_BATT_DATA_OUT

BATT_DATA_IN

BATT_CODEVddd

UNSWB+

Contro

http

://w

ww.m

yrad

io16

8.na

me

ZMY0130084-E

C408100pF

C4090.1uF

2.2uFC403

C4140.1uF

100pFC427

0.1uF

0.1uF

C407

C410

30KR425

0.1uF

R400

C411

0.1uF

47K

C421

1

23

CR440

10KR448

0.1uFC415

0.1uFC430

100pF

C405

10KR429

4.7uF

R4750

C452

C4220.1uF

C419

3

1

2TP406

Q400

VDDA1

VDDCP32

VDDD33

VDDDAC11

VD

DR

C45

VDDSYN27

VOX7

PLCAP225

SQ

DE

T17

SQIN9

SYN28

TXRTN36T

XS

ND

44

UIO10

UR

XO

UT

39

HS

IO19

LCA

P24

LSIO

18

MIC

EX

T48

MIC

INT

46

MO

D40

NC26

PLCAP8

GCB335

GC

B4

37G

CB

538

GNDA3

GNDD31

GNDD030

GN

DR

C47

GN

DS

YN

23DACR

5DACU

4D

AT

A22

DISC2

F120029

GC

B0

15G

CB

114

GC

B2

13

AU

DIO

41

AU

XR

X43

AU

XT

X42

CH

AC

T16

CLK

21CLK168

34C

SX

20

DACG6

4

VS

S

WP3

09Z41U404

AGCCAP12

X25128-2.7

CS1

HOLD7

6SCK

SI5

SO2

VC

C

8

1

U407

R453NU

R40768K

C4280.1uF

C400C401.01uF0.1uF

C4790.1uF

R4130

.01uFC420

R447100K

C451

13

2

.022uF

Q403

100K

R452

15KR451

0

R455

R456

R454NU

NU

NU

0R405

R4010

R402

0.1uFC402

0.1uF

C406

C48010uF

R41610K

24K

24K

R449

GN

D4

INPUT8

OUTPUT1

SENSE2

SHUTDOWN3

VTAP6

R445

1

U400LP2951ACMM-3.3

ERROR5

FEEDBACK7

TP410

330KR476

4V_3.3V

0.1uFC416

5V

Vdda

Vdda

SQ

_DE

TLS

IOH

SIO

Vddd

INT_EXT_Vdd

MECH_SWB+

Vddd

INT

_MIC

URX_SND

RX_AUD_RTN

CLK

CS

X

CH

AC

T

EX

T_M

IC

TX_AUD_RTN

TX

_AU

D_S

ND

FLAT_RX_SND

SWB+

DA

TA

MISO

16.8MHzNU

VS_AUDSELVS_GAINSEL

DACRx

DEMOD

FROM_RF

EX

T_S

PK

R_S

EL

FROM_RF

AU

DIO

_PA

_EN

AG

RE

EN

_LE

D

RED_LED

LED

BL

SYNF1200

EE_CS

VOX

RESET

MO

DIN

Vdda

AU

DIO

FLA

T_T

X_R

TN

1

Used for Lowband Only

800MHz only

4K x 8 BITEEPROM

ller ASFIC/ON_OFF Schematic Diagram

Page 35: Motorola Gp328 338 Service Manual

4-13

M400

UNSWB+Vddd

C4340.1uF

U410ILC7062CM-33

VS

S1

3.3V2 3

VIN VOUT

R461180

C4350.1uF

R4604.7K

R419510

CR411

123 4

56

K1K2K3

A1A2A3

LI_IONR46210K

R463300

K1K2K3

A1A2A3

456 1

23

CR413

Q417 BOOT_CTRL

TP405TEST_POINT

1

SWB+

2

3

1 6

4

47K

4.7K

47K

10K

UNSWB+

Mech_SWB+

d

5_POINT

RT40033.0K

R43251K

RTA2

Q416

1

23

ZMY0130088-D

Controller Micro Processor Schematic Diagram

http

://w

ww.m

yrad

io16

8.na

me

RTA0RTA1RTA2RTA3SB1SB2SB3OFF_BATT_DATA_OUT

LOW BATT

Vdd

R414180K

1Z

C4330.1uF

1

R41591K1Z

RSSVOXKEYPAD_COL

VOLVS_RAC

KEYPAD_ROW

LOCKVS_INTEMERPTTOPT_SEL 1OPT_ENA

TP41TEST

22pFC436

CSGP3CSGP4

C43722pF

R42010MEG

R426330K

FL401XTAL

GND

INO

UT

3

2

1

RESETR_W

KEY_INT

10KR411 C456

100pF

VST

Vddd Vddd

C423100pF

C453100pF

C449100pF

C431100pF

L411390nH

R437NU

L410390nH

R4180

TP401TEST_POINT

TP402TEST_POINT

SCI_TX SCI_RX

11

DA

TA

MIS

O

FLA

SH

_OE

LSIO

CH

AC

TS

O_D

ET

HS

IO

RD

Y

SY

N

R45710K

R40910K

Vddd F1200

CLKCSX

EE_CS

OPT_SEL 2

XA18BATT_DATA_IN

LVZIF_SEL

VS_CS

LCD_SEL

RAM_CSFLASH_EN

D0D1D2D3D4D5D6D7

A17A16A15A14A13A12A11A10A9A8A7A6A5A4A3A2A1A0

U409MC68HC11FLO

P06

+LV

INP

D5_

SS

PD

4_S

CK

PD

3_M

OS

IP

D2_

MIS

OP

D1_

TX

DP

D0_

RX

D

PA

7_P

A1_

OC

1P

A6_

OC

2_O

C1

PA

3_IC

4_O

C5_

OC

1P

A2_

IC1

PA

1_IC

2P

A0_

IC3

EX

TA

LX

TA

L

PA

5_O

C3_

OC

1P

A4_

OC

4_O

C1

VR

LV

RH

VD

DS

YN

XF

C

LVO

UT

VD

DV

DD

RV

DD

LA

VD

D

3 2 1 100

99 98 97 86 85 84 83 82 81 80 90 91 68 69 92 9379 95 12 88 39 59

ECLKIRQ

XIRQRESET

PG7_R_WMODA_LIR

PJ0_CSGP3PJ1_CSGP4

PJ2PJ3PJ4PJ5PJ6

89964894458

PJ7

57

7172737475767778

6766656463626160

PE0_AN0PE1_AN1PE2_AN2PE3_AN3PE4_AN4PE5_AN5PE6_AN6PE7_AN7

22 23 24 25 26 27 28 29

7 8 15 21 9 11 10 14 49 50 51 52 53 54 55 56

PF

7_A

DD

R7

PF

6_A

DD

R6

PF

5_A

DD

R5

PF

4_A

DD

R4

PF

3_A

DD

R3

PF

2_A

DD

R2

PF

1_A

DD

R1

PF

0_A

DD

R0

PB

7_A

DD

R15

PB

6_A

DD

R14

PB

5_A

DD

R13

PB

4_A

DD

R12

PB

3_A

DD

R11

PB

2_A

DD

R10

PB

1_A

DD

R9

PB

0_A

DD

R8

P17

P16

P15

P14

P13

P12

P11

P10

VS

SV

SS

RV

SS

LA

VS

S

13 87 40 70

PG0_XA13PG1_XA14PG2_XA15PG3_XA16PG4_XA17PG5_XA18PGG_AS

616201917185

PH0_PW1PH1_PW2PH2_PW3PH3_PW4PH4_CS10PH5_CSGP1PH6_CSGP2PH7_CSPROG

4746454443424138

PC0_DATA0PC1_DATA1PC2_DATA2PC3_DATA3PC4_DATA4PC5_DATA5PC6_DATA6PC7_DATA7

3031323334353637

Page 36: Motorola Gp328 338 Service Manual

4-1

4

Vddd

C426100pF0.1uF

C425

VD

D

14

VS

S27WE

D213

D315

D416

D517

D618

D719

D8

22OE

28

A45

A54

A63

A725

A824

A9

20CS

11D1

12

A1

21A10

23A11

2A12

26A13

1A14

8A2

7A3

6

SRM2B256U405

10A0

9

A7

A8

A9

A10

A11

A12

A13

A14

D0

D1

D2

D3

D4

D5

D6

D7

A0

A1

A2

A3

A4

A5

A6

RAM

RAM_CS

R_W

XA18

C4290.1uF

R410100K

FLASH_OE

R408

R4920

FLASH_EN

NU

D2

D4D5

D0D1

D6D7

D3

29

EN_CE30

EN_OE32

EN_WE7

VC

C

8

2

D021

D122

D223

D325

D426

D527

D628

D7

A218

A317

A416

A515

A614

A713

A83

A931

A111

AT49HLV010U406

A020

A119

A10FLASH ROM

A17A16A15A14A13A12A11A10

A1A0

A9A8A7A6A5A4A3A2

GN

D

24

A18

A1212

A134

A145

A1511

A1610

A176

9

XA18

C42410uF

2.2R428

Vddd

10KR478

ZMY0130087-B

Con

trol

lerM

emor

yS

chem

atic

Dia

gram

Page 37: Motorola Gp328 338 Service Manual

4-15

AU

SWB+

68R450

0 VR4335.6V

100pFC490

C492100pF

C491100pF

C493100pF

M401

100pFC471

100pFC473100pF

C472

R4771K

10.0VVR449

VR44510.0V

VR44810.0V

10.0VVR447VR446

10.0V

J40320 PIN CONNECTOR J403-1

J403-7J403-6

J403-4

J403-9J403-8

J403-5

J403-3J403-2

J403-17J403-16

J403-19J403-20

J403-15

J403-11

J403-18

J403-13J403-12

J403-10

J403-14

GNDINT_SPK+INT_SPK-EXT_SPK+EXT_SPK-OPT_B+EXT_MICOPT_SEL_2

OPT_SEL_1GNDRx_DATA

GNDTx_DATA

RSSIRx_AUDIO/Tx_AUDIOBOOT_CTRLNCMICGNDGND

6.8VVR460

6.8VVR434

Controller Audio Power Amplifier Schematic Diagram

http

://w

ww.m

yrad

io16

8.na

me

DIO

C47510uF

UNSWB+

470KR431

C4480.1uF

82KR423

0.1uFC447

36KR424

6.2KR472

10KR499

6

5

1415

4

1716

1 10R49810K

TDA8547U420

VC

C2

20

VC

C1

11

19

18OUT1NEG

3OUT1POS

13OUT2NEG

8OUT2POS

SELECT

SVR

IN1POS

IN2NEGIN2POS

MODE

NC1 2NC2 7NC3 9NC4 12NC5

GN

D1

GN

D2

IN1NEG

C47610uF

SWB+

5.6KR471C450

NU

3

Q410

21

46

EXT_SPKR_SELAUDIO_PA_ENA

R47310

C4420.1uF

100pFC444

R4352K

330R434

0.1uF

5V

EXT_MIC

C443 L401390nH

C445100pF

R4360

4.7uFC440

R4212K

Vdda

INT_MIC

C441100pF

390nHL400

BOOT_CTRLFLAT_RX_SND

SCI_RXSCI_TX

RSSI

VR4325.6V

OPT_SEL2OPT_SEL1

100pFC495

C496100pF

10.0VVR45

100pF

100pFC497

C494

Page 38: Motorola Gp328 338 Service Manual

4-16

5pF

EXT_MICVS_CS

J40040 - PIND CONNECTOR

J400-31J400-30

J400-35J400-36

J400-39J400-40

J400-27

J400-38

J400-28

J400-37

J400-32

J400-29

J400-33J400-34

J400-24

J400-15

J400-25

J400-16

J400-11J400-12

J400-19J400-18J400-17

J400-21

J400-13

J400-20

J400-14

J400-22

J400-26

J400-23

J400-3J400-4J400-5

J400-7J400-6

J400-8J400-9J400-10

J400-1J400-2

OFF_BATT_DATA_OUTVS_GAINSELSrD_RtnSrD_SndR/W*

DB0DB1DB2DB3DB4DB5DB6DB7

SCK_SndVS_RACGnd

Det_Aud_SndRx_Aud_RtnTx_Aud_SndTx_Aud_RtnFlat_Tx_RtnOpt_Bd_En

Rdy/ReqRx_Aud_SndONINT_EXT_Vdd

Key_RowKey_ColPTTKey_IntrpVS_INTRST*LED_EN

VS_AUDSEL

SW_B+Vddd

CS*

A0

ZMY0130089-B

Contro

http

://w

ww.m

yrad

io16

8.na

me

D5

D3

D6

D2D1D0

VdddVS_AUDSEL

VS_GAINSELMISO

VS_RAC

D7

D4

LCD_SEL

LEDBL

KEY_INT

INT_EXT_Vdd

VS_INT

A0

R_W

RESET

X_AUD_SND

PTT

SWB+

KEYPAD_ROWKEYPAD_COL

TX_AUD_RTN

VS_CSEXT_MIC

CLK

FLAT_RX_SNDRX_AUD_RTN

URX_SND

OFF_BATT_DATA_OUT

OPT_ENA

DATA

RDY

FLAT_TX_RTN

C404100pF

C527100pF

C526100pF

800 MHz only

C466100pF

100pFC458

C459100pF

C4810.1uF

0.1uFC482

E400

0.1uFC467

24KR481

E406

E404E405

E403

E408E409

E407

E401E402

100pFC463

C529

C528100pF

100pF

100pFC524

C52100

ller Interface Schematic Diagram

Page 39: Motorola Gp328 338 Service Manual

4-17

3.5

T

Vdd

a

FLA

T_R

X_S

ND

EX

T_M

IC

5V

RS

SI

BO

OT

_CT

RL

OP

T_S

EL1

OP

T_S

EL2

RS

SI

SC

I_R

X

SC

I_T

X

AU

DIO

_PA

_EN

A

EX

T_M

IC

EX

T_S

PK

R_S

EL

FLA

T_R

X_S

ND

INT

_MIC

SW

B+

UN

SW

B+

Vdd

a

5V

AU

DIO

AUDIO_PA

ON/OFF SHIELD

SH401SHIELD

1

MICROPIC SHIELD

SH402SHIELD

1

ASFIC/AUDIO PA SHIELD

1

SH403SHIELD

Complete Controller Schematic Diagram

http

://w

ww.m

yrad

io16

8.na

me

Controller Schematics (136-174MHz for 8486062B09 & 8486062B12)

INTERFACE

RESET

RX_AUD_RTN

R_W

SWB+

TX_AUD_RTNTX_AUD_SND

URX_SND

VS_AUDSEL

VS_CS

VS_GAINSEL

VS_INT

VS_RAC

Vddd

D6D7

DATA

EXT_MIC

FLAT_RX_SND

FLAT_TX_RTN

INT_EXT_Vdd

KEYPAD_COLKEYPAD_ROW

KEY_INT

LCD_SEL

LEDBL

MISO

OFF_BATT_DATA_OUT

OPT_ENA

PTT

RDY

A0CLK

D0D1D2D3D4D5

Vddd

FLAT_TX_RTN

VS_GAINSEL

DATA

OFF_BATT_DATA_OUT

MISO

VS_RACCLK

EXT_MIC

LCD_SELR_W

SWB+

VS_AUDSEL

VS_CS

FLAT_RX_SND

TX_AUD_SND

OPT_ENA

RX_AUD_RTN

TX_AUD_RTN

RDY

KEYPAD_ROW

URX_SND

INT_EXT_Vdd

KEYPAD_COL

KEY_INT

RESET

PTT

VS_INT

LEDBL

ON

A17

A2A3A4A5A6A7A8A9

A0A1

A10A11A12A13A14A15A16

D7

D0D1D2D3D4D5D6

FLA

SH

_EN

FLA

SH

_OE

RA

M_C

S

R_W

Vdd

d

XA

18

MEMORY

Vdd

d

FLA

SH

_OE

RA

M_C

S

FLA

SH

_EN

R_W

XA

18

LVZIF_SEL

VS_CS

LCD_SEL

VS_CS

Vddd

XA18

RAM_CS

R_W

FLASH_EN

FLASH_OE

LCD_SEL

LVZIF_SEL

A9

D0D1D2D3D4D5D6D7

A1

A10A11A12A13A14A15A16A17

A2A3A4A5A6A7A8

A0

SQ

_DE

T

SW

B+

SY

N

UN

SW

B+

VO

X

RE

SE

T

F12

00

HS

IO

LSIO

MIS

O

BA

TT

_DA

TA

_IN

CH

AC

T

CLK

CS

X

DA

TA

EE

_CS

SCI_RX

SCI_TX

VOL

VS_RAC

OPT_ENA

OPT_SEL1

OPT_SEL2

RDY

RSSI

RTA0

RTA1

RTA2

RTA3

SB1

SB2

SB3

KEYPAD_COL

KEYPAD_ROW

LI_ION

MECH_SWB+

OFF_BATT_DATA_OUT

BOOT_CTRL

VS

_IN

T

PT

T

EM

ER

KE

Y_I

NT

LOC

K

KE

Y_I

NT

PT

T

EM

ER

VS

_IN

T

LOC

K

RTA3

SB3

SB2

OFF_BATT_DATA_OU

VOL

MECH_SWB+

VS_RAC

KEYPAD_COL

KEYPAD_ROW

OPT_ENA

RDY

LI_ION

RTA1

RTA0

RTA2

SB1MICRO_P

5VVdda

RESETBATT_CODE

LI_ION

LOCK

4V_3.3V

CSXMODIN

DATACLK

UNSWB+DEMOD

RSSI16.8MHz

RTA2RTA3

MECH_SWB+VOLPTT

LVZIF_SELSWB+

DACRx

RED_LEDGREEN_LED

SB1SB2SB3

EMERRTA0RTA1

IF_Vdda_CTRL

IF_LVZIF_SEL_CTRL

IF_16.8MHz_CTRL

IF_EMER_CTRL

IF_CSX_CTRL

IF_LI_ION_CTRL

IF_SB3_CTRL

IF_RESET_CTRL

IF_DATA_CTRL

IF_5V_CTRL

IF_BATT_CODE_CTRL

IF_SWB+_CTRL

IF_GREEN_LED_CTRL

IF_SB2_CTRL

IF_VOL_CTRL

IF_4V_3.3V_CTRL

IF_CLK_CTRL

IF_UNSWB+_CTRLIF_LOCK_CTRL

IF_PTT_CTRL

IF_MECHSWB+_CTRL

IF_RTA1_CTRL

IF_RED_LED_CTRL

IF_RTA3_CTRL

IF_MODIN_CTRL

IF_DACRX_CTRL

IF_RTA2_CTRL

IF_SB1_CTRL

IF_RTA0_CTRL

IF_DEMOD_CTRLIF_RSSI_CTRL

16.8MHz

5VVddaRESETBATT_CODELI_ION

LOCK

4V_3.3V

DACRxCSXMODINDATACLK

UNSWB+DEMODRSSI

RTA2RTA3MECH_SWB+VOLPTTLVZIF_SELSWB+

RED_LEDGREEN_LEDSB1SB2SB3EMERRTA0RTA1

TO/FROM RF

C432NU

NUR403

Vdda VdddSWB+

RESET

UNSWB+

MISO

DATA

CSX

CLK

VS_AUDSEL

VS_GAINSEL

Vddd

DEMOD

DACRX

4V_3.3V

VS_AUDSEL

VS_GAINSEL

Vdda

Vddd

LSIO

ME

CH

_SW

B+

MIS

O

MO

DIN

OF

F_B

AT

T_D

AT

A_O

UT

RE

D_L

ED

RE

SE

T

RX

_AU

D_R

TN

SQ

_DE

T

SW

B+

SY

N

TX

_AU

D_R

TN

TX

_AU

D_S

ND

UN

SW

B+

UR

X_S

ND

VO

X

CLK

CS

X

DACRX

DA

TA

DEMOD

EE

_CS

EXT_MIC

EXT_SPKR_SEL

F12

00

FLAT_RX_SND

FLA

T_T

X_R

TN

GR

EE

N_L

ED

HS

IO

INT

_EX

T_V

dd

INT_MIC

LED

BL

16.8

MH

z

4V_3.3V

5V

AUDIO

AUDIO_PA_ENA

BA

TT

_CO

DE

BA

TT

_DA

TA

_IN

CH

AC

T

16.8

MH

z

RE

D_L

ED

RX

_AU

D_R

TN

TX

_AU

D_R

TN

TX

_AU

D_S

ND

UR

X_S

ND

OF

F_B

AT

T_D

AT

A_O

UT

MO

DIN

ME

CH

_SW

B+

LED

BL

INT

_EX

T_V

dd

GR

EE

N_L

ED

FLA

T_T

X_R

TN

BA

TT

_CO

DE

ASFIC

MEMORY SHIELD

SH400SHIELD

1

Page 40: Motorola Gp328 338 Service Manual

4-18

Q405

2

4

3

75KR406

UNSWB+

2.7KR427

5

3

1

2

4

CR412

BATT_CODEVddd

BATT_DATA_IN

OFF_BATT_DATA_OUT

Contro

http

://w

ww.m

yrad

io16

8.na

me

0.1uFC428

12

4

3

6

75

U407X25320_2.7V

MISO

8

WP

CLKCS

HOLDSI

SO

VCC

VSS4K x 8 BITEEPROM

100pFC427

R42910K

EE_CS

5V

R4130

47KR400

C4220.1uF

0.1uFC421

Vdda

.01uFC420

SQ

DE

T

GN

DS

YN

HS

IO

LCA

P

LSIO

GC

B0

GC

B1

GC

B2

CLK

CS

X

DA

TA

CH

AC

T17 2319 2418151413 2120 2216

VOX

UIO

VDDA

VDDDAC

PLCAPSQIN

GNDA

DACGDACRDACU

DISC

AGCCAP

7

10

1

11

89

3

654

2

12

U40409Z41

VDDSYN

TXRTN

VDDCPVDDD

NCPLCAP2

SYN

GNDDGNDD0

F1200

GCB3CLK168

VD

DR

CT

XS

ND

UR

XO

UT

MIC

INT

MO

D

GN

DR

CM

ICE

XT

GC

B4

GC

B5

AU

DIO

AU

XR

XA

UX

TX

45 44 3946 404748 37384143 42

TX

_AU

D_S

ND

MO

DIN

AU

DIO

FLA

T_T

X_R

TN

LED

BL

270KR448

220KR446C480

10uF

R4471.5MEG

MECH_SWB+

CR440

1

23

39KR416

13

2

Q403

1

C4020.1uF C403

10uF

3

1

2

Q400

27

36

3233

2625

28

313029

3534

C4160.1uF

SYNF1200

TX_AUD_RTN

16.8MHzRED_LED

C419NU

DA

TA

CLK

CS

X

CH

AC

TS

Q_D

ET

LSIO

HS

IO

EX

T_S

PK

R_S

EL

AU

DIO

_PA

_EN

AG

RE

EN

_LE

D

Vddd

R47624K

OUTPUT

SENSESHUTDOWNVTAP

ERRORFEEDBACK

GN

D

INPUT

LP2951ACMM-3.3U400

4

1

26

5378

C400.01uF

4V_3.3V

NUR402

0R405

SWB+

Vddd

INT

_MIC

EX

T_M

IC

68KR407

TP4061

C4010.1uF

0R401

INT_EXT_Vdd

0.1uFC410

TP410 1 C408100pF

0.1uFC409

0R475

Vdda

RESET

C4110.1uF

DEMOD

24KR449

C47930K

0.1uF

R425

0.1uFC407

R44524K

Vdda

URX_SND

RX_AUD_RTN

VOXVS_AUDSEL

VS_GAINSELDACRx

FLAT_RX_SND

C4300.1uF

.01uFC415

4.7uFC452

0.1uFC414 C451

.022uF

ller ASFIC/ON_OFF Schematic Diagram

Page 41: Motorola Gp328 338 Service Manual

4-19

_SWB+

00K

UNSWB+ SWB+

6

4

1

3

2

3

5 1

2

4

CR413R463300

Q417

TEST_POINTTP405

1

BOOT_CTRL

LI_ION

510R419

10KR462

5

3

1

2

4

1

23

Q416

CR411

C4350.1uF 4.7K180

R461 R4600.1uFC434

2

1V

SS

VIN VOUT 3ILC7062CM-33U410

3.3V

UNSWB+Vddd

Controller Micro Processor Schematic Diagram

http

://w

ww.m

yrad

io16

8.na

me

PH1_PW2PH2_PW3PH3_PW4PH4_CSIOPH5_CSGP1PH6_CSGP2PH7_CSPROG

PG1_XA14PG2_XA15PG3_XA16PG4_XA17PG5_XA18PG6_AS

PH0_PW1

PG0_XA13

PC0_DATA0PC1_DATA1PC2_DATA2PC3_DATA3PC4_DATA4PC5_DATA5PC6_DATA6PC7_DATA7

VS

SR

VS

S

VS

SL

PI1

PI2

PI3

PI4

PI5

PI6

PI7

PI0

PF

2_A

DD

R2

PF

3_A

DD

R3

PF

4_A

DD

R4

PF

5_A

DD

R5

PF

6_A

DD

R6

PF

7_A

DD

R7

PF

O_A

DD

R0

PF

1_A

DD

R1

PB

1_A

DD

R9

PB

2_A

DD

R10

PB

3_A

DD

R11

PB

4_A

DD

R12

PB

5_A

DD

R13

PB

6_A

DD

R14

PB

7_A

DD

R15

PB

O_A

DD

R8

AV

SS

XIRQ

PJ1_CSGP4PJ2PJ3PJ4PJ5PJ6PJ7

RESET

PJ0_CSGP3

PG7_R_W

PE1_AN1PE2_AN2PE3_AN3PE4_AN4PE5_AN5PE6_AN6PE7_AN7

PE0_AN0

ECLKIRQ

MODA_LIRMODB_VSTBY

XF

C

XT

AL

VD

D

VD

DL

VD

DR

VD

DS

YN

VR

HV

RL

PD

0_R

XD

PD

1_T

XD

PD

2_M

ISO

PD

3_M

OS

IP

D4_

SC

KP

D5_

SS

PD

6_LV

IN

PA

0_IC

3P

A1_

IC2

PA

2_IC

1P

A3_

IC4_

OC

5_O

C1

PA

4_O

C4_

OC

1P

A5_

OC

3_O

C1

PA

6_O

C2_

OC

1P

A7_

PA

1_O

C1

AV

DD

EX

TA

L

LVO

UT

MC68HC11FL0U409

48944

8996

5857 VST

72737475767778

71 CSGP3CSGP4

66656463626160

67

8713 4055545352515049 56 7010119211587 14272625242322 2928

3031323334353637

46454443424138

47

16201917185

6

979899100

123 7980818283848586 9391 1292696890 95 3988 59

C431100pF 100pF

C449 C453100pF

C423100pF

R41110K 100pF

C456

KEY_INT

RESETR_W

RTA0

RTA2RTA3SB1SB2SB3OFF_BATT_DATA_OUT

RTA1

VS_RACVOL

RSSIVOXKEYPAD_COLKEYPAD_ROW

EMER

OPT_SEL1OPT_ENA

LOCKVS_INT

PTT

C43622pF

GND

INO

UT

2

13

FL401XTAL

22pFC437

330KR426

R42010MEGA4

A3A2A1

A17A16A15A14A13A12A11A10A9A8A7A6A5

A0

D7

D0D1D2D3D4D5D6

LVZIF_SEL

LCD_SEL

VS_CS

RAM_CSFLASH_EN

XA18BATT_DATA_IN

CLKCSX

EE_CS

OPT_SEL2

390nHL410

390nHL411

R437NU

HS

IO

DA

TA

FLA

SH

_OE

SY

N

RD

Y

LSIO

SQ

_DE

TC

HA

CT

MIS

O

R4180

1 1

TP402TEST_POINT

TP401TEST_POINT

SCI_RXSCI_TX

F1200Vddd

10KR409R457

10K

Vddd Vddd

LOW BATT

91KR415

1%

180KR414

1%

.01uFC433 TP415

TEST_POINT1

Vddd

Mech

RT433.0

51KR432

Page 42: Motorola Gp328 338 Service Manual

4-2

0

2

6

18

17

16

15

14

13

3

19

31

1

12

4

5

11

10

20

A11

A10

A9

A8

A7

A6

A5

A4

A3

A2

A1

A0

A14

A17

A16

A15

A13

A12

A9

A17

A2

A3

A4

A5

A6

A7

A8

A1

A10

A11

A12

A13

A14

A15

A16

A0

D7

NC

D0

D1

D2

D3

D4

D5

D6FLA

SH

RO

M

24

GN

D

XA18

D0

D1

D2

D3

D4

D5

D6

D729

9

21

22

23

25

26

27

28

EN_CE

EN_OE

EN_WE

VC

C

FLASH_EN

U406AT49BV0208

30

32

70

R492

NUR408

XA18

C4290.1uF

100KR410

FLASH_OE 2.2R428

C42410uF

VS

S

14

WE

OE

CS

27

22

20

D0

D1

D2

D3

D4

D5

D6

D7

D2

D3

D4

D5

D6

D7

D8

D1

RAM

12

13

15

16

17

18

19

11

A4

A5

A6

A7

A8

A9

A1

A10

A11

A12

A13

A14

A2

A3

A0 VD

D

28U405SRM2B256

6

5

4

3

25

24

9

21

23

2

26

1

8

7

10A0

A1

A2

A3

A4

A5

A6

A7

A8

A9

A10

A11

A12

A13

A14

RAM_CS

C4250.1uF 100pF

C426

Vddd

R47810K

Vddd

R_W

Con

trol

lerM

emor

yS

chem

atic

Dia

gram

Page 43: Motorola Gp328 338 Service Manual

4-21

J403-2

J403-1

J403-3

J403-12

J403-19

J403-16

J403-18

J403-13

J403-8

J403-9

J403-15

J403-14

J403-17

J403-20

J403-7

J403-5

J403-6

J403-4

J403-10

J403-11

GND

INT_SPK+

INT_SPK-

EXT_SPK+

EXT_SPK-

OPT_B+

EXT_MIC

OPT_SEL_2

OPT_SEL_1

GND

RX_DATA

TX_DATA

GND

RSSI

RX_AUDIO/TX_AUDIO

BOOT_CTRL

NC

MIC

GND

GND

VR44510.0V 10.0V

VR446 VR44710.0V 10.0V

VR448 VR44910.0V

J40320 PIN CONNECTOR

68R450

C471100pF C472

100pF C473100pF

SWB+

VR4346.8V

100pFC493

100pFC490

100pFC492

100pFC491

5.6VVR433

R4771K

AU

50V

Controller Audio Power Amplifier Schematic Diagram

http

://w

ww.m

yrad

io16

8.na

me

OPT_SEL2OPT_SEL1

C497100pF

100pFC496

C495100pF C494

100pF

5.6VVR432

FLAT_RX_SND

SCI_RX

SCI_TX

RSSI

BOOT_CTRL

C441100pF

L400390nH

R4212K

INT_MIC

2KR435

C444100pF

R4360

C4404.7uF

100pFC445

390nHL401C443

0.1uF

EXT_MIC

C4420.1uF

10R473

10uFC475 UNSWB+

DIO

0.1uFC447

3.6KR472

0.1uFC448

36KR424

R431470K

VCC1 VCC2

OUT1NEGOUT1POS

OUT2NEGOUT2POS

SELECT

SVR

IN1NEGIN1POS

IN2NEGIN2POS

MODENC2NC3NC4NC5

NC1

GN

D1

GN

D2

6

5

1716

1415

4

R42347K

U420TDA854720 11

791219

183

138

2

1 10

10uFC476

SWB+

R4715.6K

Q41046

1 32AUDIO_PA_ENA EXT_SPKR_SEL

Vdda

R4346.2K

5V

0.1uFC450

VR410.0

Page 44: Motorola Gp328 338 Service Manual

4-2

2

MISO

VS_RAC

D7

D4D5

D3

D6

D2D1D0

Vddd

R_W

RESET

LCD_SEL

LEDBL

KEY_INT

INT_EXT_Vdd

VS_INT

VS_AUDSEL

VS_GAINSEL

FLAT_RX_SNDRX_AUD_RTN

URX_SND

TX_AUD_SND

PTT

SWB+

KEYPAD_ROWKEYPAD_COL

A0

OFF_BATT_DATA_OUT

OPT_ENA

DATA

RDY

FLAT_TX_RTNTX_AUD_RTN

VS_CSEXT_MIC

CLK

J400-23

J400-2

J400-5

J400-20

J400-14

J400-26

J400-17

J400-35

J400-34

J400-33

J400-32

J400-31

J400-13

J400-15

J400-4

J400-9

J400-18

J400-11

J400-40

J400-25

J400-39

J400-28

J400-21

J400-27

J400-37

J400-36

J400-30

J400-29

J400-22

J400-3

J400-19

J400-8

J400-12

J400-6

J400-24

J400-1

J400-38

J400-10

J400-16

J400-7

EXT_MIC

VS_CS

SW_B+VdddVS_AUDSEL

Det_Aud_Snd

Rx_Aud_RtnTx_Aud_Snd

Tx_Aud_Rtn

Flat_Tx_RtnOpt_Bd_En

Rdy/Req

Rx_Aud_Snd

ON

INT_EXT_Vdd

Key_Row

Key_Col

PTT

Key_Intrp

VS_INT

RST*LED_EN

OFF_BATT_DATA_OUT

VS_GAINSEL

SrD_Rtn

SrD_Snd

R/W*CS*DB0

DB1

DB2

DB3

DB4

DB5

DB6

DB7

A0

SCK_Snd

VS_RACGnd

E406

E405

E403

E402

E401

E404

E409

E408

E407

C463100pF

0.1uF

C481

0.1uFC482

0.1uFC467

E400

R48124K

100pF

100pFC458

C466

100pFC459

J40040-PINS CONNECTOR

Con

trol

lerI

nter

face

Sch

emat

icD

iagr

am

Page 45: Motorola Gp328 338 Service Manual

4-23

3.6

AUDIO_PA

_OUT

UN

SW

B+

Vdd

a

5V

AU

DIO

AU

DIO

_PA

_EN

A

EX

T_M

IC

EX

T_S

PK

R_S

EL

FLA

T_R

X_S

ND

INT

_MIC

SW

B+

BO

OT

_CT

RL

OP

T_S

EL1

OP

T_S

EL2

RS

SI

SC

I_R

X

SC

I_T

X

RXBE TO_RF FROM_RF

SHIELDSH401

1

ON/OFF SHIELD MICROPIC SHIELD

SHIELDSH402

1

SHIELDSH403

1

ASFIC/AUDIO PA SHIELD

5VVdd

a

FLA

T_R

X_S

ND

EX

T_M

IC

TO_RF

FROM_RF

RS

SI

ZMY0130540-A

Dual Vdd Regulator Scheme

Single VddRegulator Scheme

Non PrimeModel

Prime Model

Prime Model

Non PrimeModelJUMPERS

R401

R402

R403

R404

R405

Y

N

Y Y

Y Y

Y

Y

Y

N

N N

N

N

N

N

N

N N

Y

Complete Controller Schematic Diagram

http

://w

ww.m

yrad

io16

8.na

me

Controller Schematics (136-174MHz) for PCB 8486062B16

4V_3.3V

VddaRESET

BATT_CODELI_ION

LOCK

MODINDATA

UNSWB+DEMOD

RSSI16.8MHz

RTA2RTA3

MECH_SWB+

LVZIF_SELSWB+

DACRx

RED_LEDGREEN_LED

EMERRTA0RTA1

5V

CSX

CLK

VOLPTT

SB1SB2SB3

5VVddaRESETBATT_CODELI_ION

LOCK

4V_3.3V

CSXMODINDATACLK

UNSWB+DEMODRSSI16.8MHz

RTA2RTA3MECH_SWB+VOLPTTLVZIF_SELSWB+DACRx

RED_LEDGREEN_LEDSB1SB2SB3EMERRTA0RTA1

TO/FROM RF

IF_Vdda_CTRL

IF_DEMOD_CTRL

IF_RTA2_CTRL

IF_RSSI_CTRL

IF_RED_LED_CTRL

IF_RTA3_CTRL

IF_CLK_CTRL

IF_DACRX_CTRL

IF_MODIN_CTRL

IF_SB1_CTRL

IF_RTA0_CTRL

IF_PTT_CTRL

IF_GREEN_LED_CTRL

IF_SB2_CTRL

IF_VOL_CTRL

IF_RTA1_CTRL

IF_SB3_CTRL

IF_UNSWB+_CTRL

IF_RESET_CTRL

IF_5V_CTRL

IF_LOCK_CTRL

IF_BATT_CODE_CTRL

IF_MECHSWB+_CTRL

IF_16.8MHz_CTRL

IF_LVZIF_SEL_CTRLIF_SWB+_CTRL

IF_CSX_CTRL

IF_4V_3.3V_CTRLIF_LI_ION_CTRL

IF_DATA_CTRL

IF_EMER_CTRL

$PNUC432

R403

Vdda VdddNU

VS_INTRX_AUD_RTN

VS_AUDSEL

INT_EXT_Vdd

Vddd

VS_CSFLAT_RX_SND

EXT_MIC

MISOVS_RAC

VS_GAINSELTO/FROM VS

VS_GAINSELVS_INTRX_AUD_RTNVS_AUDSEL

INT_EXT_Vdd

Vddd

VS_CSFLAT_RX_SND

EXT_MIC

MISOVS_RAC

IF_VS_AUDSEL_1_CNTLIF_RX_AUD_RTN_1_CNTL

IF_VS_GAINSEL_1_CNTL

IF_FLAT_RX_SND_1_CNTL

IF_VS_INT_1_CNTL

IF_INT_EXT_Vdd_1_CNTL

IF_VS_RAC_1_CNTL

IF_VS_CS_1_CNTL

IF_Vddd_1_CNTL

IF_MISO_1_CNTL

IF_EXT_MIC_1_CNTL

Vddd

FLAT_TX_RTN

LEDBL

VS_GAINSEL

DATA

OFF_BATT_DATA_OUT

MISO

EXT_MIC

LCD_SELR_W

SWB+

VS_AUDSEL

VS_CS

FLAT_RX_SND

TX_AUD_SND

OPT_ENA

RX_AUD_RTN

TX_AUD_RTN

RDY

KEYPAD_ROW

URX_SND

INT_EXT_Vdd

KEYPAD_COL

KEY_INT

RESET

PTT

VS_INT

VS_AUDSEL

VS_CS

VS_GAINSEL

VS_INT

VS_RAC

Vddd

KEYPAD_ROW

KEY_INT

LCD_SEL

LEDBL

MISO

OFF_BATT_DATA_OUT

OPT_ENA

PTT

RDY

RESET

RX_AUD_RTN

R_W

SWB+

TX_AUD_RTNTX_AUD_SND

URX_SND

CLK

D0D1D2D3D4D5D6D7

DATA

EXT_MIC

FLAT_RX_SND

FLAT_TX_RTN

INT_EXT_Vdd

KEYPAD_COL

ON

A0

VS_RACCLK

INTERFACE

MEMORY

MICRO_P

ASFIC

SWB+

RESET

UNSWB+

MISO

DATA

CSX

CLK

4V_3.3V

VS_AUDSEL

VS_GAINSEL

Vddd

DEMOD

DACRX

VS_AUDSEL

VS_GAINSEL

Vddd

4V_3.3V

DACRX

DEMOD

RE

SE

T

SQ

_DE

T

SW

B+

SY

N

UN

SW

B+

VO

X

F12

00

HS

IO

LSIO

MIS

O

BA

TT

_DA

TA

_IN

CH

AC

T

CLK

CS

X

DA

TA

EE

_CS

Vdda

EXT_MIC

EXT_SPKR_SEL

FLAT_RX_SND

INT_MIC

5V

AUDIO

AUDIO_PA_ENA

RX

_AU

D_R

TN

TX

_AU

D_R

TN

TX

_AU

D_S

ND

UR

X_S

ND

FLA

T_T

X_R

TN

GR

EE

N_L

ED

INT

_EX

T_V

dd

LED

BL

ME

CH

_SW

B+

MO

DIN

OF

F_B

AT

T_D

AT

A_O

UT

RE

D_L

ED

16.8

MH

z

BA

TT

_CO

DE

BA

TT

_CO

DE

16.8

MH

z

RE

D_L

ED

RX

_AU

D_R

TN

TX

_AU

D_R

TN

TX

_AU

D_S

ND

UR

X_S

ND

OF

F_B

AT

T_D

AT

A_O

UT

MO

DIN

ME

CH

_SW

B+

LED

BL

INT

_EX

T_V

dd

GR

EE

N_L

ED

FLA

T_T

X_R

TN

Vdd

d

FLA

SH

_OE

RA

M_C

S

FLA

SH

_EN

R_W

XA

18

HIGH_NOISE

A11A12A13A14A15A16A17

A2A3A4A5A6A7A8A9

A0A1

A10

FLA

SH

_EN

FLA

SH

_OE

RA

M_C

S

R_W

Vdd

d

XA

18

D1D2D3D4D5D6D7

D0

LVZIF_SEL

VS_CS

LCD_SEL

SQ

_DE

T

SW

B+

SY

N

UN

SW

B+

VO

X

MIS

O

RE

SE

T

DA

TA

EE

_CS

F12

00

HS

IO

LSIO

BA

TT

_DA

TA

_IN

CH

AC

T

CLK

CS

X

VS_CS

Vddd

XA18

RAM_CS

R_W

FLASH_EN

FLASH_OE

LCD_SEL

LVZIF_SEL

D0D1D2D3D4D5D6D7

A8A9

A0A1

A10A11A12A13A14A15A16A17

A2A3A4A5A6A7

VS

_IN

T

PT

T

EM

ER

KE

Y_I

NT

LOC

K

SB3

SCI_RX

VOL

VS_RAC

OFF_BATT_DATA_OUT

OPT_ENA

RSSI

RTA0

RTA1

RTA2

RTA3

SB1

SB2

KEYPAD_COL

KEYPAD_ROW

LI_ION

MECH_SWB+

BOOT_CTRL

RTA2

SB1

RTA3

SB3

SB2

OFF_BATT_DATA

VOL

MECH_SWB+

VS_RAC

KEYPAD_COL

KEYPAD_ROW

OPT_ENA

LI_ION

RTA1

RTA0

KE

Y_I

NT

PT

T

EM

ER

VS

_IN

T

LOC

K

SCI_TX

OPT_SEL1

OPT_SEL2

RDY RDY

SHIELDSH400

1

MEMORY SHIELD

Page 46: Motorola Gp328 338 Service Manual

4-24

R402NU

Vddd

2.2uFC403C402

0.1uF

R45115K

R455NU CR440

1

23

Q400

3

1

2

75KR406

UNSWB+BATT_CODE

1 3

Q405

2

4

10KR416

OFF_BATT_DATA_OUT

K21 K3

CR412

4A15A26A3

3 K12

2.7KR427

BATT_DATA_IN

Vddd

ZMY0130544-B

Contro

http

://w

ww.m

yrad

io16

8.na

me

INT

_MIC

EX

T_M

IC

TP4101

R4750

Vdda

C4100.1uF

C408100pF 0.1uF

C409

TX

_AU

D_S

ND

MO

DIN

AU

DIO

FLA

T_T

X_R

TN

LED

BL

C4110.1uF

VDDDAC

VD

DR

C

VDDSYN

VOX

SQIN SYN

TXRTNTX

SN

D

UIO

VDDA

VDDCPVDDD

MO

D

NC

PLCAP

PLCAP2

RX

RT

N

RX

SN

D

SQCAP

SQ

DE

T

GNDDO

GN

DR

C

GN

DS

YN

HS

IO

LCA

P

LSIO

MIC

EX

T

MIC

INT

GC

B0

GC

B1

GC

B2

GCB3

GC

B4

GC

B5

GNDA

GNDD

CLK168

CS

X

DACGDACRDACU

DA

TA

DISC

F1200

AU

DIO

AU

XT

N

CH

AC

T

CLK

U40463A53

11

45

27

7

9 28

36

44

10

1

3233

40

26

8

25

43 39

12

17

30

47

2319 2418

48 46151413

35

3738

3

31

34

20

654

22

2

29

4142

16 21

0R413

C420.01uF

0.1uFC416

R40047K

C4220.1uF

C4210.1uF

SYNF1200

Vdda

0.1uFC479

R42530K

0.1uFC407

24KR449

R44524K

URX_SND

RX_AUD_RTN

Vdda

DEMOD

FLAT_RX_SND

VOXVS_AUDSELVS_GAINSEL

DACRx

C4300.1uF

C4150.1uF .022uF

C4510.1uFC414 C452

1uF

DA

TA

CLK

CS

X

CH

AC

TS

Q_D

ET

LSIO

HS

IO

EX

T_S

PK

R_S

EL

AU

DIO

_PA

_EN

AG

RE

EN

_LE

D

.01uFC41916.8MHz

RED_LEDTX_AUD_RTN

5V

Vddd

0.1uFC428C427

100pF

R42910K

EE_CS

31

7

6

5

U407X25128-2.7

WPCS

HOLD

SCK

SI

SO

VC

CV

SS

4

2

8

MISO4Kx8 BITEEPROM

4V_3.3V

R4050

SWB+

C4010.1uF

68KR407

R4010

INT_EXT_Vdd

TP4061

C400.01uF

R476330K

SENSESHUTDOWNVTAP

ERRORFEEDBACK

4G

ND

INPUT OUTPUT

LP2951ACMM-3.3U400

236

578 1

RESET

MECH_SWB+

R44810K

R452100K

C48010uF

R453

1.5MEGR447

NUR454NU

R45603

2

1

Q403

ller ASFIC/ON_OFF Schematic Diagram

Page 47: Motorola Gp328 338 Service Manual

4-25

VdddUNSWB+

0.1uFC435

4.7KR460R461

180

VS

S1

U410ILC7062CM-33

VIN2

VOUT3

C4340.1uF

3.3V

510R419

5A2 6A3

3K1

2 K21K3

CR411

4A1

3

1

2

Q416

4A1

5A26A3

3K1

2K2 1K3

CR413

LI_ION

R46210K

R463300

UNSWB+

Q417

SWB+

TP405TEST_POINT

1

BOOT_CTRL

2

1

3

6

4

47K

4.7K

10K

47K

33.0KRT400

4321K

ech_SWB+

M400 ZMY0130541-A

Controller Micro Processor Schematic Diagram

http

://w

ww.m

yrad

io16

8.na

me

Vddd F1200

10KR409

10KR457

SCI_RXSCI_TX

1TEST_POINTTP402

0R4181

DA

TA

TEST_POINTTP401

FLA

SH

_OE

MIS

O

SY

N

RD

Y

LSIO

HS

IOS

Q_D

ET

CH

AC

T

LCD_SEL

CLK

LVZIF_SEL

VS_CS

XA18BATT_DATA_IN

OPT_SEL2

RAM_CSFLASH_EN

CSXEE_CS

A2A3A4A5A6A7

A14A15A16A17

D1D2D3D4D5D6D7

A0A1

A8A9

A10A11A12A13

D0

OPT_SEL1OPT_ENA

EMER

LOCKVS_INT

PTT

22pFC436

22pFC437

10MEGR420

R426330K

FL401

GND2

IN1

OU

T3

XTAL

R5

Vddd

M

VS_RACVOL

RSSIVOXKEYPAD_COLKEYPAD_ROW

SB3OFF_BATT_DATA_OUT

RTA1RTA0

RTA2RTA3SB1SB2

RESETR_W

KEY_INT

TEST_POINT1

TP415R41591K1Z

.01uFC433

R414180K1ZLOW BATT

L410390nH

R437NU

L411390nH

91 69689899100

123 97 80818283848586 9079 9392

454443424138

201917185

4746

616

31323334

30

353637

545352515049 56552625242322 292827 119211587 1410

48

737475767778

94

7172

4

8996

5857

66656463626160

67

13 4087 70

VST

CSGP3CSGP4

Vddd Vddd

100pFC453

100pFC449

100pFC431 C423

100pF

10KR411 C456

100pF

39881295 59

U409MC68HC11FL0

PH1_PW2PH2_PW3PH3_PW4PH4_CSIOPH5_CSGP1PH6_CSGP2PH7_CSPROG

PG1_XA14PG2_XA15PG3_XA16PG4_XA17PG5_XA18PG6_AS

PH0_PW1

PG0_XA13

PD

3_M

OS

IP

D4_

SC

KP

D5_

SS

PD

6_LV

IN

PC0_DATA0PC1_DATA1PC2_DATA2

PD

0_R

XD

PD

1_T

XD

PD

2_M

ISO

PA

0_IC

3P

A1_

IC2

PA

2_IC

1P

A3_

IC4_

OC

5_O

C1

PA

4_O

C4_

OC

1P

A5_

OC

3_O

C1

PA

6_O

C2_

OC

1P

A7_

PA

1_O

C1

XT

AL

VR

HV

RL

EX

TA

L

XF

CV

DD

SY

N

LVO

UT

VD

D

VD

DL

VD

DR

AV

DD

ECLK

XIRQRESET

PG7_R_W

IRQ

MODA_LIRMODB_VSTBY

PJ1_CSGP4PJ0_CSGP3

PJ2PJ3PJ4PJ5PJ6PJ7

PE2_AN2PE3_AN3PE4_AN4PE5_AN5PE6_AN6PE7_AN7

PE0_AN0PE1_AN1

VS

SR

VS

S

VS

SL

AV

SS

PI1

PI2

PI3

PI4

PI5

PI6

PI7

PI0

PB

1_A

DD

R9

PB

2_A

DD

R10

PB

3_A

DD

R11

PB

4_A

DD

R12

PB

5_A

DD

R13

PB

6_A

DD

R14

PB

7_A

DD

R15

PB

O_A

DD

R8

PF

2_A

DD

R2

PF

3_A

DD

R3

PF

4_A

DD

R4

PF

5_A

DD

R5

PF

6_A

DD

R6

PF

7_A

DD

R7

PF

O_A

DD

R0

PF

1_A

DD

R1

PC3_DATA3PC4_DATA4PC5_DATA5PC6_DATA6PC7_DATA7

Page 48: Motorola Gp328 338 Service Manual

4-26

Vddd

0.1

uF

C4

25

10

0p

FC

42

6

A4

A5

A6

A7

A8

A9

A1

A10

A11

A2

A3

A0

VDD

D2

D3

D4

D5

D6

D1

6543

25

24 921

23 87

10

12

13

15

16

17

11

A8

A9

A0

A1

A10

A11

A2

A3

A4

A5

A6

A7

SR

M2B

256

U405

28

D0

D1

D2

D3

D4

D5

RA

M

Contro

http

://w

ww.m

yrad

io16

8.na

me

A12

A13

A14

D7

2

261

18

19

A12

A13

A14

D6

D7

D8

27

WE

22

OE

20

CS

14

VSS

FLA

SH

_O

E

R410

100K

RA

M_C

S

R_W

10uF

C424

2.2

R428

Vddd

C429

0.1

uF

10K

R478

NU

R408

NU

0R

49

2F

LA

SH

_E

N

VCC 8

EN

_W

E

EN

_C

E

EN

_O

E7

30

32

A4

16

A5

15

A6

14

A7

13

A8

32

A2

18

A3

17

A0

20

A1

19

A9

A13

4

A14

5

A15

11

A16

10

A17

6

A18

9

A10

31

A11

1

A12

12

A9

A10

A11

A12

A13

A14

A15

A16

A17

A7

A8

A0

A1

A2

A3

A4

A5

A6

AT

49LV

040

U406

D2

23

D3

25

D4

26

D5

27

D6

28

D7

29

D0

21

D1

22

D0

D1

D2

D3

D4

D5

D6

D7

FLASH ROMGND

24

ZM

Y0130543-A

ller Memory Schematic Diagram

Page 49: Motorola Gp328 338 Service Manual

4-27

SWB+EL1

C495470pF C494

100pF

VR4335.6V

10.0VVR450

100pFC493

470pFC490

C492470pF

C491470pF

R4771K

6.8VVR460

VR4346.8V

R45068

C473470pF

C472470pF

C471470pF

C483470pF 470pF

C484 10.0VVR448

VR44710.0V VR449

10.0V

J40320 PIN CONN

J403-15

J403-19

J403-16

J403-17

J403-7

J403-5

J403-6

J403-4

J403-10

J403-2

J403-14

J403-13

J403-18

J403-20

J403-3

J403-1

J403-12

J403-11

J403-8

J403-9

GND

INT_SPK+

INT_SPK-

EXT_SPK+

EXT_SPK-

OPT_B+

EXT_MIC

OPT_SEL_2

OPT_SEL_1

GND

RX_DATA

TX_DATA

GND

RSSI

RX_AUDIO/TX_AUDIO

BOOT_CTRLNC

MIC

GND

GND

ZMY0130545-A

Controller Audio Power Amplifier Schematic Diagram

http

://w

ww.m

yrad

io16

8.na

me

AUDIO

SWB+

AUDIO_PA_ENA EXT_SPKR_SEL

UNSWB+

EXT_MIC

5V

Vdda

INT_MIC

FLAT_RX_SND

BOOT_CTRL

SCI_RXSCI_TX

RSSI

OPT_SEL2OPT_S

0.1uFC447

36K

R4726.2K

R424

R431470K

0.1uFC448

R49810K

R499R42382K 10K

OUT2POS

SELECT

SVR

VC

C1

VC

C2

NC1NC2NC3NC4NC5

OUT1NEGOUT1POS

OUT2NEG

GN

D1

GN

D2

IN1NEGIN1POS

IN2NEGIN2POS

MODE

U420TDA8547

10uFC476

NU

C4500.1uF R471

5.6K

138

6

5

20 11

4

2791219

183

1

10

1716

1415

1 3

Q410

2

6 4

C474.01uF10uF

C475

10R473

0.1uFC442

1000pFC477 C478

1000pF

C444100pF

C446470pF

330R434

C4430.1uF

2KR435

0R436

2KR421

390nHL401

C445470pF

390nHL400

C4404.7uF

C441470pF

5.6VVR432

M401

470pFC496470pF

C497

Page 50: Motorola Gp328 338 Service Manual

4-28

J400-24

J400-6

J400-28

J400-37

J400-12

J400-34

J400-4

J400-8

J400-32

J400-29

J400-11

J400-35

J400-20

J400-40

J400-25

J400-13

J400-2

J400-16

J400-10

J400-23

J400-30

J400-1

J400-5

J400-17

J400-26

J400-39

J400-31

J400-21

J400-27

J400-15

J400-3

J400-9

J400-36

J400-18

J400-22

J400-19

J400-38

J400-33

J400-14

J400-7

VS_GAINSEL

SrD_Rtn

SrD_Snd

R/W*

LCD_SEL

DB0

DB1

DB2

DB3

DB4

DB5

DB6

DB7

A0

SCK_Snd

VS_RAC

Gnd

EXT_MIC

VS_CS

SW_B+

Vddd

VS_AUDSEL

Det_Aud_Snd

Rx_Aud_Rtn

Tx_Aud_Snd

Tx_Aud_Rtn

Flat_Tx_Rtn

Opt+Bd_En

Rdy/Rea

Rx_Aud_Snd

ON

INT_EXT_Vdd

Key_Row

Key_Col

PTT

Key_Intrp

VS_INT

RST*

LED_EN

OFF_BATT_DATA_OUT

J40040 - PINS CONNECTOR

ZMY0130542-A

Contro

http

://w

ww.m

yrad

io16

8.na

me

E408

E401

E402

E405

E407

E406

E409

E403

E404

C4670.1uF

E400

0.1uFC482 0.1uF

C481

C459100pF

R48124K

C466100pF

C458100pF

1000pFC4020

C463100pF

1000pFC4021

KEYPAD_ROWKEYPAD_COL

Vddd

LCD_SEL

LEDBL

KEY_INT

INT_EXT_Vdd

VS_INT

VS_AUDSEL

VS_GAINSELMISO

VS_RAC

FLAT_RX_SNDRX_AUD_RTN

URX_SND

TX_AUD_SND

PTT

SWB+

R_W

RESET

OFF_BATT_DATA_OUT

OPT_ENA

DATA

RDY

FLAT_TX_RTNTX_AUD_RTN

VS_CSEXT_MIC

CLK

D2D1D0

D7

D4D5

D3

D6

A0

ller Interface Schematic Diagram

Page 51: Motorola Gp328 338 Service Manual

4-29

3.7

SB3

SB1

RTA2

RTA0

RED_LED

LI_ION

EMER

GREEN_LED

RTA1

RTA3

SB2

PTT

Controller Hierarchical Diagram

http

://w

ww.m

yrad

io16

8.na

me

Controller Schematics (29-42/35-50MHz)

MODINPTT

RED_LED

RE

SE

T

RSSI

RTA0

RTA1

RTA2

RTA3

SB1

SB2

SB3

SWB+ UNSWB+

VO

L

Vdda

Vdd

a

CONTROLLER

16.8MHz

4V_3

.3V

5V

BAT

T_C

OD

E

CLK

CSX

DACRx

DATA

DEMOD

EMER

GREEN_LED

LI_ION

LOCK

LVZIF_SEL

MECH_SWB+

BAT

T_C

OD

E

RE

SE

T

VO

L

16.8MHz

4V_3

.3V

DATA

DEMOD

MODIN

LVZIF_SEL

DACRx

CLK

RSSI

CSX

LOCK5V M

EC

H_S

WB

+

UN

SW

B+

SW

B+

Page 52: Motorola Gp328 338 Service Manual

4-30

MICROPIC SHIELD

PrimeNon Prime

Y

Y

N

N

N

Single Vdd

Prime

R401

R402 N

Y

Regulator Scheme

Y

N

N

ModelModel

N

N

N

Y

Model

Y

Y

Non Prime

R405

R403

R404

Model

Y

Regulator Scheme

Y

ASFIC/AUDIO PA SHIELD

N

N

MEMORY SHIELD

JUMPERS

Dual Vdd

ON/OFF SHIELD

SH403SHIELD

SH401SHIELD

SH402SHIELD

SH400SHIELD

Vdd

a

5V

AU

DIO

AU

DIO

_PA

_EN

A

BO

OT

_CT

RL

EX

T_M

IC

EX

T_S

PK

R_S

EL

FLA

T_R

X_S

ND

INT

_MIC

OP

T_S

EL1

OP

T_S

EL2

RS

SI

SC

I_R

X

SC

I_T

X

SW

B+

UN

SW

B+

5V

AUDIO PA

Vdd

a

FLA

T_R

X_S

ND

EX

T_M

IC

TA0

TA2

B1

TA3

B3

B2

FF_BATT_DATA_OUT

OL

ECH_SWB+

S_RAC

KEYPAD_COL

EYPAD_ROW

OPT_ENA

RDY

LI_ION

TA1

RS

SI

FL0830460O

Comple

http

://w

ww.m

yrad

io16

8.na

me

SEE TABLE

TO/FROM RF

NP

IF_VOL_CTRL

IF_CLK_CTRL

IF_RTA2_CTRL

SB2

SB3

SCI_RX

SCI_TX

SQ

_DE

T

SW

B+

SY

N

UN

SW

B+

VOL

VO

X

VS_CS

VS

_IN

T

VS_RAC

Vddd

XA18

OFF_BATT_DATA_OUT

OPT_ENA

OPT_SEL1

OPT_SEL2

PT

T

RAM_CS

RDY

RE

SE

T

RSSI

RTA0

RTA1

RTA2

RTA3

R_W

SB1

EE

_CS

EM

ER

F12

00

FLASH_EN

FLASH_OE

HS

IO

KEYPAD_COL

KEYPAD_ROW

KE

Y_I

NT

LCD_SEL

LI_ION

LOC

K

LSIO

LVZIF_SEL

MECH_SWB+

MIS

OA7A8A9

BAT

T_D

ATA

_IN

BOOT_CTRL

CH

AC

T

CLK

CS

X

D0D1D2D3D4D5D6D7

DAT

A

A0A1

A10A11A12A13A14A15A16A17

A2A3A4A5A6

IF_SWB+_CTRL

IF_GREEN_LED_CTRL

IF_MODIN_CTRL

IF_PTT_CTRL

IF_MECHSWB+_CTRL

IF_SB1_CTRL

IF_RTA3_CTRL

A8A9

D0D1D2D3D4D5D6D7

FLA

SH

_EN

FLA

SH

_OE

RA

M_C

S

R_W

Vdd

d

XA

18

A0A1

A10A11A12A13A14A15A16A17

A2A3A4A5A6A7

IF_LOCK_CTRL

IF_Vdda_CTRLIF_RESET_CTRL

IF_DEMOD_CTRL

UN

SW

B+

UR

X_S

ND

VO

X

VS_AUDSEL

VS_GAINSEL

Vdda

Vddd

INT_MIC

LED

BL

LSIO

ME

CH

_SW

B+

MIS

O

MO

DIN

OF

F_B

ATT

_DAT

A_O

UT

RE

D_L

ED

RE

SE

T

RX

_AU

D_R

TN

SQ

_DE

T

SW

B+

SY

N

TX

_AU

D_R

TN

TX

_AU

D_S

ND

BAT

T_C

OD

E

BAT

T_D

ATA

_IN

CH

AC

T

CLK

CS

X

DACRX

DAT

A

DEMOD

EE

_CS

EXT_MIC

EXT_SPKR_SEL

F12

00

FLAT_RX_SND

FLA

T_T

X_R

TN

GR

EE

N_L

ED

HS

IO

INT

_EX

T_V

dd

16.8

MH

z

4V_3.3V

5V

AUDIO

AUDIO_PA_ENA

IF_5V_CTRL

IF_SB2_CTRL

IF_4V_3.3V_CTRL

EMER

0

IF_16.8MHz_CTRL

SB3

SB1

R403

SWB+LVZIF_SEL

PTT

GREEN_LEDRED_LED

RTA1

CSXMODIN

IF_LI_ION_CTRL

IF_SB3_CTRL

BATT_CODELI_ION

4V_3.3V

RESET

RX_AUD_RTN

R_W

SWB+

TX_AUD_RTNTX_AUD_SND

URX_SND

VS_AUDSEL

VS_CS

VS_GAINSEL

VS_INT

VS_RAC

Vddd

D6D7

DATA

EXT_MIC

FLAT_RX_SND

FLAT_TX_RTN

INT_EXT_Vdd

KEYPAD_COLKEYPAD_ROW

KEY_INT

LCD_SEL

LEDBL

MISO

OFF_BATT_DATA_OUT

OPT_ENA

PTT

RDY

SB2

UNSWB+

A0CLK

D0D1D2D3D4D5

IF_DATA_CTRL

RSSIDEMOD

IF_BATT_CODE_CTRL

IF_RSSI_CTRL

IF_RTA0_CTRL

0.5pFC432

VOL

RTA0

RTA3

5VVdda

RESET

LOCK

IF_LVZIF_SEL_CTRL

IF_RTA1_CTRL

IF_RED_LED_CTRL

DACRx

DATA

IF_EMER_CTRL

IF_CSX_CTRL

CLK

IF_DACRX_CTRL

IF_UNSWB+_CTRL

RTA2

16.8MHz

MECH_SWB+

VddaRESET

EMER

BATT_CODELI_ION4V_3.3V

RTA2

SB3

SB1

VOL

RTA0

RTA3

5V

SWB+LVZIF_SELPTT

GREEN_LEDRED_LED

RTA1

SB2

UNSWB+

CLK

CSXDACRx

DATAMODIN

DACRX

CSX

CLK

BAT

T_C

OD

E

4V_3.3V

ASFIC

MICRO P

INTERFACE

MEMORY

16.8

MH

z

16.8MHz

DEMOD

LOCK

MECH_SWB+

RSSI

Vddd

VS_GAINSEL

VS_AUDSEL

UR

X_S

ND

UNSWB+

TX

_AU

D_S

ND

TX

_AU

D_R

TN

SWB+

RX

_AU

D_R

TN

RESET

RE

D_L

ED

OF

F_B

ATT

_DAT

A_O

UT

MO

DIN

MISO

ME

CH

_SW

B+

LED

BL

INT

_EX

T_V

dd

GR

EE

N_L

ED

FLA

T_T

X_R

TN

DEMOD

DATA

R

R

S

R

S

S

O

V

M

V

K

KE

Y_I

NT

PT

T

EM

ER

VS

_IN

T

LOC

K

Vdd

dVddd

FLAT_TX_RTN

FLA

SH

_OE

RA

M_C

S

FLA

SH

_EN LVZIF_SEL

VS_CS

LCD_SEL

R

PTT

VS_INT

LEDBL

VS_GAINSEL

DATA

OFF_BATT_DATA_OUT

MISO

VS_RACCLK

R_W

XA

18

Vdda Vddd

EXT_MIC

LCD_SELR_W

SWB+

VS_AUDSEL

VS_CS

FLAT_RX_SND

TX_AUD_SND

OPT_ENA

RX_AUD_RTN

TX_AUD_RTN

RDY

KEYPAD_ROW

URX_SND

INT_EXT_Vdd

KEYPAD_COL

KEY_INT

RESET

te Controller Schematic Diagram

Page 53: Motorola Gp328 338 Service Manual

4-31

N N

R402

R403

R404

Y

Y

Software Package

Conv./MDC Popular

5 Tone - All

U407

YR405

Y

Y

Y

Y

Y

Y

N

N

N

N

N

N

N

N

N

5102463J62 - 8k

5102463J64 - 16k

Conv./MDC Preferred 5102463J64 - 16k

JUMPERS

Dual Vdd

Regulator Scheme

Non PrimeModel

PrimeModel

Single Vdd

Regulator Scheme

Non PrimeModel

PrimeModel

R401

4

1 3

Q405

2

4A1 5A2 6A3

3 K12 K21 K3

CR412

2.7KR427

Q400

3

1

2

3

CR4401

2

C4032.2uF

R41639K

0.1uF

C402

R40675K

VdddBATT_CODE

BATT_DATA_IN

OFF_BATT_DATA_OUT

Vddd

UNSWB+

Controller ASFIC/ON_OFF Schematic Diagram

http

://w

ww.m

yrad

io16

8.na

me

800 MHz only

NP

SEE TABLE

EEPROMSEE TABLE

SEE TABLE

NP

TP406

C4280.1uF

0.1uF

C430

C4070.1uF

0.1uFC422

100pF

C427

C4140.1uF

TP410

R44924K

R407

68K

1MEGR405

R4010

100pF

.01uF

C405

C420

Q40313

2

SI5

SO 2

VC

C

8

4V

SS

WP3

U407X25128-2.7

CS1

HOLD7

6 SCK

270K

R448

C415.01uF

30KR425

R42910K

0.1uFC416

C4090.1uF

10

VDDA1

VDDCP32VDDD33

VDDDAC11

VD

DR

C45

VDDSYN27

VOX7

RX

RT

N

39R

XS

ND

12 SQCAP

SQ

DE

T17

SQIN9 SYN 28

TXRTN36TX

SN

D44

UIO

24

LSIO

18

MIC

EX

T48

MIC

INT46

MO

D40

NC 26

PLCAP8

PLCAP225

43 37G

CB

538

GNDA3

GNDD3130GNDDO

GN

DR

C47

GN

DS

YN

23

HS

IO19

LCA

P

4D

AT

A22

DISC2

F120029

GC

B0

15G

CB

114

GC

B2

13

GCB335

GC

B4

4142A

UX

TN

CH

AC

T16

CLK

21CLK16834

CS

X20

DACG6 DACR5 DACU

63A53U404

AU

DIO

C421

0.1uF

C41210uF

C406

0.1uF

0.1uF

C410

C4802.2uF

R446200K

R447

1.6MEG

0.1uFC411

0.5pFC419

.01uFC400

.022uFC451

330KR476

R4021MEG

SENSE2SHUTDOWN3

VTAP 6

ERROR5FEEDBACK7

GN

D

4

INPUT8 OUTPUT1

U400LP2951ACMM-3.3

47KR400

R4130

C4524.7uF

0.1uFC401

100pF

0.1uF

C408

24K

C479

TX_AUD_RTN

EX

T_M

IC

Vdda

R445

4V_3.3V

MECH_SWB+

INT_EXT_Vdd

SWB+

RESET

CH

AC

TS

Q_D

ET

LSIO

HS

IO

5V

R4750

Vdda

Vdda

SYNF1200

DA

TA

CLK

Vddd

MISO

EE_CS

DEMOD

VOX

MO

DIN

Vdda

AU

DIO

FLA

T_T

X_R

TN

16.8MHz

VS_AUDSELVS_GAINSEL

DACRx

EX

T_S

PK

R_S

EL

AU

DIO

_PA

_EN

AG

RE

EN

_LE

D

RED_LED

LED

BL

TX

_AU

D_S

ND

FLAT_RX_SND

INT

_MIC

URX_SND

RX_AUD_RTN

CS

X

ZMY0130812-O

Page 54: Motorola Gp328 338 Service Manual

4-32

3.3V

4.7KR460

0.1uFC435

M400

Q416

3

1

2

300

K31

R463

CR411

A14

A25

A36

K13

K22

Q417

2

47K

4.7K

47K

1K

6

4

1

3

VIN2

VOUT3

VSS

1

U410ILC7062CM-33

TP405

180R461

C4340.1uF

0K00

10KR462

CR413

A14

A25

A36

K13

K22

K31

R419510

BOOT_CTRL

LI_ION

VdddUNSWB+

_SWB+

UNSWB+ SWB+

FL0830465O

Contro

http

://w

ww.m

yrad

io16

8.na

me

NP

CSGP3CSGP4

1%

1%LOW BATT

VST

0R437

330K

R426

GND2

IN

1

OU

T

3

XTALFL401

10KR411

TP401

100pF

C423

R40910K

R418

13V

SS

40V

SS

L

87V

SS

R

XF

C93

48XIRQ

XTA

L91

1MEG

78PJ7

94RESET

12V

DD

39V

DD

L

88V

DD

R

92V

DD

SY

N

69V

RH

68V

RL

49P

I7

71PJ0_CSGP3

72PJ1_CSGP4

73PJ2

74PJ3

75PJ4

76PJ577

PJ6

38PH7_CSPROG

56P

I0

55P

I1

54P

I2

53P

I3

52P

I4

51P

I5

50P

I6

4PG7_R_W

47PH0_PW1

46PH1_PW2

45PH2_PW3

44 PH3_PW443

PH4_CSIO42

PH5_CSGP141

PH6_CSGP2

29P

FO

_AD

DR

0

6PG0_XA13

16 PG1_XA1420

PG2_XA1519

PG3_XA1617

PG4_XA1718

PG5_XA185

PG6_AS

PE7_AN760

28P

F1_

AD

DR

1

27P

F2_

AD

DR

2

26P

F3_

AD

DR

3

25P

F4_

AD

DR

4

24P

F5_

AD

DR

5

23P

F6_

AD

DR

6

22P

F7_

AD

DR

7

PD

6_LV

IN3

PE0_AN067

PE1_AN166

PE2_AN265

PE3_AN364

PE4_AN463

PE5_AN562

PE6_AN661

36PC6_DATA6

37PC7_DATA7

97P

D0_

RX

D

98P

D1_

TX

D

99P

D2_

MIS

O

100

PD

3_M

OS

I

1P

D4_

SC

K

2P

D5_

SS

7P

B7_

AD

DR

15

14P

BO

_AD

DR

8

30PC0_DATA0

31PC1_DATA1

32PC2_DATA2

33PC3_DATA334PC4_DATA4

35PC5_DATA5

PA6_

OC

2_O

C1

8586PA

7_PA

1_O

C1

10P

B1_

AD

DR

9

11P

B2_

AD

DR

10P

B3_

AD

DR

11921

PB

4_A

DD

R12

15P

B5_

AD

DR

13

8P

B6_

AD

DR

14

MODA_LIR58

57MODB_VSTBY

79PA

0_IC

3

80PA

1_IC

2

81PA

2_IC

1

82PA

3_IC

4_O

C5_

OC

1

83PA

4_O

C4_

OC

1

84PA

5_O

C3_

OC

1

U409

MC68HC11FL0

59A

VD

D

70A

VS

S

89ECLK

90E

XTA

L

96IRQLV

OU

T95

TP402

100pF

C453

100pF

51K

C456

R41591K

R432

22pFC437

C43622pF

C431

100pF

33.RT4

10KR457

100pF

10MEG

C449

R420

TP415

R414180K

L410390nH

L411390nH

.01uFC433

HS

IO

LSIO

RD

Y

KEYPAD_ROW

KEY_INT

SY

N

Vddd

D7D6D5D4D3D2D1D0

A8

A13A12A11A10

A9

FLA

SH

_OE

CH

AC

TS

Q_D

ET

A0

A7A6A5A4A3A2A1

KEYPAD_COLVOXRSSI

VS_RACVOL

EE_CSCSX

MIS

O

SCI_TX SCI_RX

F1200

OFF_BATT_DATA_OUTSB3SB2

SB1RTA3RTA2RTA1RTA0

OPT_ENAOPT_SEL1PTTEMERVS_INTLOCK

FLASH_ENRAM_CS

LCD_SEL

VS_CS

LVZIF_SEL

R_W

BATT_DATA_INXA18

A17A16A15A14

OPT_SEL2

Vddd

Mech

CLK

Vddd

DAT

A

Vddd

RESET

ller Microprocessor Schematic Diagram

Page 55: Motorola Gp328 338 Service Manual

4-33

5 To

ne

U40

6

5102

463J

59 -

128

kN

ot u

sed

U40

5

5102

463J

60 -

512

k51

0246

3J36

- 3

2k

Sof

twar

e P

acka

ge

Con

vent

iona

l/MD

C

GND 24

A12

12

A13

4

A14

5

A15

11

A16

10

A17

6

A11

A14

A17

A16

A15

A13

A12

FL0

8304

64O

Controller Interface and Memory Schematic Diagram

http

://w

ww.m

yrad

io16

8.na

me

FLASH ROMRA

M

XA

18

NP

R40

81M

EG

0.1u

FC

425

100p

FC

426

C42

90.

1uF

R41

010

0K

C42

4

R42

8

10uF

19D

8

22O

E

28 VDD 14VSS

27W

E

2.2

20C

S

11D

112

D2

13D

315

D4

16D

517

D6

18D

7

8A

27

A3

6A

45

A5

4A

63

A7

25A

824

A9

10A

09

A1

21A

1023

A11

2A

1226

A13

1A

14

EN

_WE

7

NC

9

VCC

8

SR

M2B

256

U40

5 D2

23

D3

25

D4

26

D5

27

D6

28

D7

29

EN

_CE

30

EN

_OE

32

A4

16

A5

15

A6

14

A7

13

A8

3

A9

2

D0

21

D1

22

A2

18

A3

17

AT49

BV

020

U40

6A

020

A1

19

A10

31 1

10K

R47

8

R49

20

A10A

9A

8A

7A

6A

5A

4A

3A

2A

1A

0

XA

18

A0

A1

A2

A3

A4

A5

A6

A7

A8

A9

A10

A11

A12

A13

A14

R_W

FLA

SH

_OE

FLA

SH

_EN

RA

M_C

S

D0

D1

D2

D3

D4

D5

D6

D7D0

D1

D2

D3

D4

D5

D6

D7

Vdd

d

Vdd

d

A11

Page 56: Motorola Gp328 338 Service Manual

4-34

GND

RX_DATA

TX_DATA

GND

RSSI

RX_AUDIO/TX_AUDIO

20 PIN CONNJ403

INT_SPK+

NC

BOOT_CTRL

GND

MIC

GND

GND

INT_SPK-

EXT_SPK+

EXT_SPK-

OPT_B+

EXT_MIC

OPT_SEL_2

OPT_SEL_1

C497

100pF

470KR431

C490

100pF

J403-3

C4480.1uF

J403-16

J403-4

J403-1

J403-10

R471

10.0VVR450

5.6K

R421

J403-18

2K

C4420.1uF

J403-7

68R450

0.1uF

C450 100pFC444

R4361K

R47310

100pF

C471

J403-13

J403-14

3

Q410

2

6 4

1

100pF

0.1uF

C491

100pF

C443

C445

100pFC441

J403-8R4352K

C492100pF

10.0VVR449

C447.022uF

R42436K

6.2KR472

82KR423

C4402.2uF

C4382.2uF

11

VCC2

VR44610.0V

NC5 19

18OUT1NEG

3OUT1POS

13OUT2NEG

8OUT2POS

6SELECT

5 SVR

20

VC

C1

16 IN1POS

14 IN2NEG

15 IN2POS

4 MODE

NC12

NC27

NC3 9

NC4 12

TDA8547U420

1

GN

D1

10

GN

D2

17IN1NEG

VR44810.0V

J403-15

3

NU10K

R499

Q411

2

6 4

1

M401

NU

C495

100pF100pF

VR434

C494

390nH

6.8V

J403-17

L401

J403-20

100pF

C496

1KR477

J403-12

J403-19

L400390nH

10.0VVR447

J403-9

C493

100pF

330R434

VR4335.6V

VR4325.6V

C47510uF

J403-11

100pF

C472

100pFC473

VR44510.0V

C476

10uF

J403-6

J403-2

J403-5

5V

Vdda

BOOT_CTRL

SWB+

AUDIO_PA_ENA EXT_SPKR_SEL

5V

FLAT_RX_SND

INT_MIC

OPT_SEL2

EXT_MIC

SCI_RX

SCI_TX

SWB+

RSSI

OPT_SEL1

AUDIO

UNSWB+

FL0830462O

Controller Audio Power Amplifier Schematic Diagram

http

://w

ww.m

yrad

io16

8.na

me

Page 57: Motorola Gp328 338 Service Manual

5-1

Section 5

KEYPAD BOARD INFORMATION

1.0 Theory of OperationKeypadThe LED_EN setting is set by the codeplug. When the value is set to high, the LED will not light upduring power up and vice versa.

U602 is a comparator that will compare the voltage when any one of the keypad row or keypadcolumn keys is being pressed. Therefore when a key is being pressed, it will send a message to themicroprocessor through the output (KEY_INT) telling it that a key has been pressed. Themicroprocessor will then sample the Analog to Digital voltages at the keypad row and keypad columnand map it with the table so that the key being pressed can be identified. Once the key has beenidentified, the message that corresponds to the key will show up at the display.

Figure 5-1: Keypad Block Diagram

40 pin connector

Comparator

Keypad

ButtonLED

Dis

play

18pi

nco

nnec

tor

Key_Int

Keypad Column

Keypad

Data

Row

Page 58: Motorola Gp328 338 Service Manual

5-2 Troubleshooting Chart

2.0 Troubleshooting Chart

Figure 5-2: Keypad Board Troubleshooting Chart

Display

KeypadLED

End

Disconnect andreconnect 18-pin

flex

Disconnect andreconnect 40-pin

flex

ON

OFF

OFF

ON

IF STILL OFF

Page 59: Motorola Gp328 338 Service Manual

Parts List (Keypad Basic) 5-3

3.0 Parts List (Keypad Basic)

Circuit Ref MotorolaPart No. Description

C610 2113743N50 100 pFC611 2113743N50 100 pFC612 2113743N50 100 pFC613 2113743N50 100 pFC615 2113743N50 100 pFC616 2113743N50 100 pFC618 2113743N50 100 pFC619 2113743N50 100 pFC620 2113743N50 100 pFC621 2113743N50 100 pFC622 2113743N50 100 pFC631 2113743N50 100 pFC630 2113743N43 51 pFC632 2113743N43 51 pFC633 2113743N50 100 pFC634 2113743N43 51 pFC635 2113743N50 100 pFC636 2113743N43 51 pFC637 2113743N50 100 pFC638 2113743N43 51 pFC639 2113743N50 100 pFC640 2113743N43 51 pFC641 2113743N50 100 pFC642 2113743N43 51 pFC643 2113743N50 100 pFC644 2113743N43 51 pFC645 2113743N50 100 pFC646 2113743N50 100 pFC647 2113743N43 51 pFD601 4880479U01 79U01D602 4880479U01 79U01D603 4880479U01 79U01D604 4880479U01 79U01D605 4880479U01 79U01D606 4880479U01 79U01E634 2480640Z01 Ind BeadE637 2480640Z01 Ind BeadE638 2480640Z01 Ind BeadE639 2480640Z01 Ind BeadE640 2480640Z01 Ind BeadE641 2480640Z01 Ind BeadE642 2480640Z01 Ind BeadE643 2480640Z01 Ind BeadE644 2480640Z01 Ind BeadE645 2480640Z01 Ind BeadJ601 0980521Z01 44 pin connectorJ602 0905505Y03 18 pin connectorQ601 4805128M67 MMBT3906 tran-

sistor (PNP)

Q602 4880214G02 MMBT3904 tran-sistor (NPN)

Q603 4880214G02 MMBT3904 tran-sistor (NPN)

R601 0662057V20 51KR602 0662057V20 51KR603 0662057V05 13KR604 0662057V11 22KR605 0662057V18 43KR606 0662057V30 130KR607 0662057V05 13KR608 0662057V11 22KR609 0662057V18 43KR610 0662057V30 130KR611 0662057N16 51KR612 0662057N41 560KR613 0662057N47 1MR614 0662057M01 0 ohmR617 0662057M01 0 ohmR618 0662057M74 1KR619 0662057M74 1KR620 0662057M74 1KR621 0662057M74 1KR622 0662057M74 1KR623 0662057M74 1KR626 0662057M01 0 ohmR627 0662057M01 0 ohmR631 0662057M01 0 ohmR632 0662057N23 100KR633 0662057N23 100KR646 0662057N23 100KR647 0662057M85 3KR648 0662057N23 100KR649 0662057N15 47KU602 5102463J49 LMC7211 com-

parator8480574Z05 PC Board

Circuit Ref MotorolaPart No. Description

Page 60: Motorola Gp328 338 Service Manual

5-4 Parts List (Keypad Basic)

Page 61: Motorola Gp328 338 Service Manual

Keypad Board And Schematic Diagram 5-5

4.0 Keypad Board And Schematic Diagram

D60

1

M60

4M

607

D60

4

M61

0M

613

D60

3

M61

6M

619

D60

6

M61

7

M61

8

M62

0

M62

1

D60

5

M61

1

M61

2

M61

4

M61

5

D60

2

M60

5

M60

6

M60

8

M60

9

ZMY0130489-O

R61

4

R61

5

R61

6

R61

7

R620

C61

4

R60

2

R60

3

R60

7

R60

4

R60

8

R60

5

R60

9R

610

R626

J602

18

1R

601R63

1

C621 R61

8

R64

9

C61

6

Q601Q602

Q603

R61

9

R64

8

R64

7

C60

9

C62

2

R61

1R

612

R61

3

R62

5R

630

E63

9E

641

E64

3E

645

R62

8

E63

8E

640

E64

2E

644

E63

4

R627

R629

C611 C61

5

R622 R63

3

R64

6

U60

2

C61

0

C619

C62

0

E637R623

R632

C617C618

2

C612 C613

J60140

39

R606

R62

1

ZMY0130490-O

Keypad Board Top and Bottom View (PCB No. 8480574Z05)

Top View Bottom View

http

://w

ww.m

yrad

io16

8.na

me

Page 62: Motorola Gp328 338 Service Manual

5-6 Keypad Board And Schematic Diagram

R6191K

R6201K1K

R618

79U01D601

79U01D605D604

79U01

1KR623

1KR621 R622

1K

79U01D602 D606

79U0179U01D603

47KR649

PNPQ601

R628

R_WNU

A0

LCD_SEL

R629

R6270

NU

100pFC616

R633100K

Q602NPN

100KR646 R648

100K

3KR647

Q603NPN

R625

R630

DATA

CLK

NU

NU

J602-7

J602-13

J602-15J602-16

J602-18J602-17

J602-2J602-3J602-4J602-5J602-6

J602-1

J602-14

J602-11J602-10

J602-12

J602-8J602-9

0R626

0R631

C614

Vddd

SWB+NU

RESET

100pFC622

100KR632

51pFC644

51pFC642

100pFC645

100pFC650

100pFC651

100pFC652

100pFC653

100pFC654

100pFC655

100pFC643

E645

E644

51pFC640

51pFC638

51pFC636

100pFC641

100pFC639

100pFC637

E643

E642

C634

C632

51pF

51pF

100pFC635

100pFC633

E639

E640

E641

100pFC631

E638

51pFC630

DATA

RESET

100pFC615

C613100pF

KEYPAD_COL

100pFC612

C611100pF

KEYPAD_ROW

C621100pF

C620100pF

C610100pF

E637

100pFC619

Vddd

VS_INT

VS_GAINSEL

EXT_MIC

R_WLCD_SEL

FLAT_TX_RTN

RX_AUD_RTNTX_AUD_SNDTX_AUD_RTN

OPT_ENARDY

URX_SNDON

INT_EXT_Vdd

PTTKEY_INT

OFF_BATT_DATA_OUT

MISO

VS_CSSWB+

VS_AUDSELFLAT_RX_SND

C617 100pFC618

NU

J601-29J601-28

J601-26

J601-2

J601-5J601-4J601-3

J601-40

J601-1

J601-8J601-7J601-6

J601-41J601-42

J601-37

J601-35J601-36

J601-34

J601-20

J601-32J601-31

J601-14

J601-12

J601-30

J601-11J601-10J601-9

J601-44

J601-33

J601-43

J601-27

J601-25J601-24

J601-22J601-23

J601-21

J601-38

J601-17

J601-15J601-16

J601-13

J601-19J601-18

J601-39CLK

VS_RAC

C64751pF

C646100pF

E634

A0

51KR601

13KR603

R60251K

KEYPAD_COL

Vddd

KEYPAD_ROW43KR605

130KR606

130KR610

R604

R60943K

22K

R60822K13K

R607

ROW2

COL2 COL3

ROW3 ROW4

COL5

ROW5

C609

R612560K 1MEG

R613

R61151K

4

31

2

5

U602LMC7211

Vddd

KEY_INT

Vddd

NU

KEYPAD_COL COL2

IN4

OUT11

OUT22

M619SWITCH

GND3*

M616

GND3

IN4

OUT11

OUT22

SWITCH

7

GND3

IN4

OUT11

OUT22

M613SWITCH

4

GND3

IN4

OUT11

OUT22

SWITCHM610

1

GND3

IN4

OUT11

OUT22

M607SWITCH

P1GND3

IN4

OUT11

OUT22

SWITCHM608

P2

4

OUT11

OUT22

M611SWITCH

GND3

IN

2

GND3

IN4

OUT11

OUT22

SWITCHM614

5

GND3

IN4

OUT11

OUT22

M617SWITCH

8

M620

GND3

IN4

OUT11

OUT22

SWITCH

COL3

0 OUT22

SWITCHM621

GND3

IN4OUT11

ROW5

#

M618

GND3

IN4

OUT11

OUT22

SWITCH

ROW4

9

GND3

IN4

OUT11

OUT22

M615SWITCH

ROW3

6

1

OUT22

M612

GND3

IN4

OUT1SWITCH

ROW2

3

GND3

IN4

OUT11

OUT22

M609SWITCH

KEYPAD_ROW

P3

OUT22

SWITCHM606

GND3

IN4OUT11

ROW5

+GND3

IN4

OUT11

OUT22

M605SWITCH

ROW4

0R614

0GND3

IN4

OUT11

OUT22

R617

SWITCHM604

R615

R616

OFF_BATT_DATA_OUT

ROW3

COL5

ON

-NU

NU

EXT_MICVS_CSSW_B+VdddVS_AUDSELDet_Aud_SndRx_Aud_RtnTx_Aud_SndTx_Aud_RtnFlat_Tx_RtnOpt_Bd_EnRdy/ReqRx_Aud_SndONINT_EXT_VddKey_RowKey_ColPTTKey_IntrpVS_INTRST*LED_ENOFF_BATT_DATA_OUTVS_GAINSELSrD_RtnSrD_SndR/W*CS*DB0DB1DB2DB3DB4DB5DB6DB7A0SCK_SndVS_RACGndGndGndGndGnd

40 PIN CONNECTOR

MOSISCKD0D1D2D3D4D5D6D7A0R/W*RST*CS*LED_ENGndVddSW_B+

J60218 PIN CONNECTOR

ZMY0130090-B

Keypad Board Schematic Diagram

http

://w

ww.m

yrad

io16

8.na

me

Page 63: Motorola Gp328 338 Service Manual

6A-1

Section 6A

MODEL CHART AND TEST SPECIFICATIONS (403-470MHZ)

1.0 Model Chart

GP Series, UHF, 403-470 MHzModel Description

AZH25RDC9AA2 GP328 403-470 MHz 4W 4 CH

AZH25RDC9AA3 GP328 403-470 MHz 4W

AZH25RDH9AA6 GP338 403-470 MHz 4W

Item Description

X PMUE1563_ GP328 Super Tanapa 403-470 MHz 4W 4CH

X PMUE1434_ GP328 Super Tanapa 403-470 MHz 4W

X PMUE1407_ GP338 Super Tanapa 403-470 MHz 4W

X PMUE1565_ GP328 Tanapa 403-470 MHz 4W 4CH

X PMUE1448_ GP328 Tanapa 403-470 MHz 4W

X PMUE1406_ GP338 Tanapa 403-470 MHz 4W

X PMLE4171_ GP328 B/C Kit 403-470 MHz 4W 4CH

X PMLE4130_ GP328 B/C Kit 403-470 MHz 4W

X PMLE4109_ GP338 B/C Kit 403-470 MHz 4W

X PMLN4348_ GP328 Front Housing Kit 4CH

X PMLN4216_ GP328 Front Housing Kit

X PMLN4199_ GP338 Front Housing Kit

X X X NAE6483_ UHF 16 cm Monopole (Whip) antenna (403-520 MHz)

X X X PMAE4002_ UHF 9 cm antenna (403-433 MHz)

X X X PMAE4003_ UHF 9 cm antenna (430-470 MHz)

X X 6804110J54 GP328 User Guide

X 6804110J55 GP338 User Guide

x = Indicates one of each is required.

Page 64: Motorola Gp328 338 Service Manual

6A-2 Model Chart

GP Series, UHF, 403-470 MHzModel Description

AZH25RDC9AA3 withoption AZQ203AE

GP328 403-470 MHz 4W (w/o keypad, camouflage)

AZH25RDC9AA3 withoption AZH64AH

GP328 403-470 MHz 4W (w/o keypad, yellow)

AZH25RDH9AA6 withoption AZQ203AG

GP338 403-470 MHz 4W (keypad, camouflage)

AZH25RDH9AA6 withoption AZH64AJ

GP338 403-470 MHz 4W (keypad, yellow)

Item Description

X PMUE1923_ GP328 Super Tanapa 403-470 MHz 4W

X PMUE1919_ GP328 Super Tanapa 403-470 MHz 4W

X PMUE1927_ GP338 Super Tanapa 403-470 MHz 4W

X PMUE1921_ GP338 Super Tanapa 403-470 MHz 4W

X PMUE1924_ GP328 Tanapa 403-470 MHz 4W

X PMUE1920_ GP328 Tanapa 403-470 MHz 4W

X PMUE1928_ GP338 Tanapa 403-470 MHz 4W

X PMUE1922_ GP338 Tanapa 403-470 MHz 4W

X X PMLE4130_ GP328 B/C Kit 403-470 MHz 4W

X X PMLE4109_ GP338 B/C Kit 403-470 MHz 4W

X PMLN4539_ GP328 Front Housing Kit

X PMLN4544_ GP328 Front Housing Kit

X PMLN4538_ GP338 Front Housing Kit

X PMLN4545_ GP338 Front Housing Kit

X X X X NAE6483_ UHF 16 cm Monopole (Whip) antenna (403-520 MHz)

X X X X PMAE4002_ UHF 9 cm antenna (403-433 MHz)

X X X X PMAE4003_ UHF 9 cm antenna (430-470 MHz)

X X 6804110J54 GP328 User Guide

X X 6804110J55 GP338 User Guide

x = Indicates one of each is required.

Page 65: Motorola Gp328 338 Service Manual

Specifications 6A-3

2.0 SpecificationsGeneral

Transmitter

Receiver

All specifications are subject to change without notice.

UHF

Frequency: 403-470 MHz

Channel Capacity: GP328 : 4/16 ChannelsGP338 : 128 Channels

Power Supply: 7.5 Volts ±20%

Dimensionswith Standard

High CapacityNiMH Battery:

with Ultra HighCapacity NiMH Bat-tery:

137mm x 57.5mm x37.5mm

137mm x 57.5mm x40mm

Weight:with Standard

High CapacityNiMH Battery:

with Ultra HighCapacity NiMH Bat-tery:

420 g

500 g

Average BatteryLife @ (5-5-90 DutyCycle)

Standard HighCapacity NiMH Bat-tery:

Ultra High Capac-ity NiMH Battery:

Low Pow-er

>11 hrs

>14 hrs

High Pow-er

>8 hrs

>11 hrs

Sealing: Passes rain testing perIP54

Shock: Meets MIL-STD-810-C,D & E and TIA/EIA 603

Vibration: Meets MIL-STD-810-C,D & E and TIA/EIA 603

Dust: Meets MIL-STD-810-C,D & E and IP54

Humidity: Meets MIL-STD-810-C,D & E and TIA/EIA 603

FCC ID AZ489FT4826

UHF

RF OutputNiMH @ 7.5V:

Low1W

High4W

Frequency 403-470 MHz

Channel Spacing 12.5/20/25 kHz

Freq. Stability(-30°C to +60°C)

0.00025%

Spurs/Harmonics: -36 dBm < 1 GHz-30 dBm > 1 GHz

Audio Response:(from 6 dB/oct. Pre-Emphasis, 300 to3000Hz)

+1, -3 dB

Audio Distortion:@ 1000 Hz, 60%Rated Max. Dev.

<5%

FM Noise: -40 dB

UHF12.5kHz

UHF 20/25kHz

Frequency: 403-470MHz

403-470MHz

Sensitivity12dB EIA SINAD:

0.35 µV 0.35 µV

Adjacent ChannelSelectivity ETS

-60 dB -70 dB

IntermodulationETS

-65 dB -65 dB

Freq. Stability(-30°C to +60°C):

0.00025% 0.00025%

Spur Rejection: -70 dB -70 dB

Image Rejection: -70 dB -70 dB

Audio Output@ <5% Distortion

500 mW 500 mW

Page 66: Motorola Gp328 338 Service Manual

6A-4 Transmitter

3.0 Transmitter

3.1 General(Refer to Figure 6-1)

The UHF transmitter contains five basic circuits:

1. power amplifier

2. antenna switch

3. harmonic filter

4. antenna matching network

5. power control integrated circuit (PCIC).

3.1.1 Power Amplifier

The power amplifier consists of two devices:

1. 9Z67 LDMOS driver IC (U101) and

2. PRF1507 LDMOS PA (Q110).

The 9Z67 LDMOS driver IC contains a 2 stage amplification with a supply voltage of 7.3V.

This RF power amplifier is capable of supplying an output power of 0.3W (pin 6 and 7) with an inputsignal of 2mW (3dBm) (pin16). The current drain would typically be 160mA while operating in thefrequency range of 403-470MHz.

The PRF1507 LDMOS PA is capable of supplying an output power of 7W with an input signal of0.3W. The current drain would typically be 1300mA while operating in the frequency range of 403-470MHz. The power output can be varied by changing the biasing voltage.

Figure 6-1: Transmitter Block Diagram

PCIC

Antenna

P ADriver

Vcontrol Vcontrol

From VCO

Jack

PA-FinalStage

Antenna Switch/Harmonic Filter/

Matching Network

Page 67: Motorola Gp328 338 Service Manual

Transmitter 6A-5

3.1.2 Antenna Switch

The antenna switch circuit consists of two PIN diodes (CR101 and CR102), a pi network (C107, L104and C106), and two current limiting resistors (R101, R170). In the transmit mode, B+ at PCIC (U102)pin 23 will go low and turn on Q111 where a B+ bias is applied to the antenna switch circuit to bias thediodes "on". The shunt diode (CR102) shorts out the receiver port, and the pi network, whichoperates as a quarter wave transmission line, transforms the low impedance of the shunt diode to ahigh impedance at the input of the harmonic filter. In the receive mode, the diodes are both off, andhence, there exists a low attenuation path between the antenna and receiver ports.

3.1.3 Harmonic Filter

The harmonic filter consists of C104, L102, C103, L101 and C102. The design of the harmonic filterfor UHF is that of a modified Zolotarev design. It has been optimized for efficiency of the powermodule. This type of filter has the advantage that it can give a greater attenuation in the stop-band fora given ripple level. The harmonic filter insertion loss is typically less than 1.2dB.

3.1.4 Antenna Matching Network

A matching network which is made up of L116 is used to match the antenna's impedance to theharmonic filter. This will optimize the performance of the transmitter and receiver into an antenna.

3.1.5 Power Control Integrated Circuit (PCIC)

The transmitter uses the Power Control IC (PCIC), U102 to regulate the power output of the radio.The current to the final stage of the power module is supplied through R101, which provides a voltageproportional to the current drain. This voltage is then fedback to the Automatic Level Control (ALC)within the PCIC to regulate the output power of the transmitter.

The PCIC has internal digital to analog converters (DACs) which provide the reference voltage of thecontrol loop. The reference voltage level is programmable through the SPI line of the PCIC.

There are resistors and integrators within the PCIC, and external capacitors (C133, C134 and C135)in controlling the transmitter rising and falling time. These are necessary in reducing the powersplatter into adjacent channels.

CR105 and its associated components are part of the temperature cut back circuitry. It senses theprinted circuit board temperature around the transmitter circuits and output a DC voltage to the PCIC.If the DC voltage produced exceeds the set threshold in the PCIC, the transmitter output power will bereduced so as to reduce the transmitter temperature.

Page 68: Motorola Gp328 338 Service Manual

6A-6 Receiver

4.0 Receiver

4.1 Receiver Front-End(Refer to UHF Receiver Front End Schematic Diagram on page 6A-18 and UHF TransmitterSchematic Diagram on page 6A-22)

The RF signal is received by the antenna and applied to a low-pass filter. For UHF, the filter consistsof L101, L102, C102, C103, C104. The filtered RF signal is passed through the antenna switch. Theantenna switch circuit consists of two PIN diodes(CR101 and CR102) and a pi network (C106, L104and C107).The signal is then applied to a varactor tuned bandpass filter. The UHF bandpass filtercomprises of L301, L302, C302, C303, C304, CR301 and CR302. The bandpass filter is tuned byapplying a control voltage to the varactor diodes(CR301 and CR302) in the filter.

The bandpass filter is electronically tuned by the DACRx from IC404 which is controlled by themicroprocessor. Depending on the carrier frequency, the DACRx will supply the tuned voltage to thevaractor diodes in the filter. Wideband operation of the filter is achieved by shifting the bandpass filteracross the band.

The output of the bandpass filter is coupled to the RF amplifier transistor Q301 via C307. After beingamplified by the RF amplifier, the RF signal is further filtered by a second varactor tuned bandpassfilter, consisting of L306, L307, C313, C317, CR304 and CR305.

Both the pre and post-RF amplifier varactor tuned filters have similar responses. The 3 dB bandwidthof the filter is about 50 MHz. This enables the filters to be electronically controlled by using a singlecontrol voltage which is DACRx .

Figure 6-2: UHF Receiver Block Diagram

Demodulator

Synthesizer

CrystalFilter

MixerVaractorTuned FilterRF AmpVaractor

Tuned Filter

Pin DiodeAntennaSwitchRF Jack

Antenna

AGC

Control Voltagefrom ASFIC

First LOfrom FGU

Recovered AudioSquelch

RSSI

IF IC

SPI Bus

16.8 MHzReference Clock

SecondLO VCO

U301

IF Amp

Page 69: Motorola Gp328 338 Service Manual

Receiver 6A-7

The output of the post-RF amplifier filter which is connected to the passive double balanced mixerconsists of T301, T302 and CR306. Matching of the filter to the mixer is provided by C381. Aftermixing with the first LO signal from the voltage controlled oscillator (VCO) using low side injection, theRF signal is down-converted to the 45.1 MHz IF signal.

The IF signal coming out of the mixer is transfered to the crystal filter (FL301) through a resistor padand a diplexer (C322 and L310). Matching to the input of the crystal filter is provided by C324 andL311. The crystal filter provides the necessary selectivity and intermodulation protection.

4.2 Receiver Back-End(Refer to UHF Receiver Back End Schematic Diagram on page 6A-19)

The output of crystal filter FL301 is matched to the input of IF amplifier transistor Q302 bycomponents R352 and C325. Voltage supply to the IF amplifier is taken from the receive 5 volts (R5).The IF amplifer provides a gain of about 7dB. The amplified IF signal is then coupled into U301(pin 3)via C330, C338 and L330 which provides the matching for the IF amplifier and U301.

The IF signal applied to pin 3 of U301 is amplified, down-converted, filtered, and demodulated, toproduce the recovered audio at pin 27 of U301. This IF IC is electronically programmable, and theamount of filtering (which is dependent on the radio channel spacing) is controlled by themicroprocessor. Additional filtering, once externally provided by the conventional ceramic filters, isreplaced by internal filters in the IF module (U301).

The IF IC uses a type of direct conversion process, whereby the externally generated second LOfrequency is divided by two in U301 so that it is very close to the first IF frequency. The IF IC (U301)synthesizes the second LO and phase-locks the VCO to track the first IF frequency. The second LOis designed to oscillate at twice the first IF frequency because of the divide-by-two function in the IFIC.

In the absence of an IF signal, the VCO will “search” for a frequency, or its frequency will vary close totwice the IF frequency. When an IF signal is received, the VCO will lock onto the IF signal. Thesecond LO/VCO is a Colpitts oscillator built around transistor Q320. The VCO has a varactor diode,CR310, to adjust the VCO frequency. The control signal for the varactor is derived from a loop filterconsisting of C362, C363, C364, R320 and R321.

The IF IC (U301) also performs several other functions. It provides a received signal-strengthindicator (RSSI) and a squelch output. The RSSI is a dc voltage monitored by the microprocessor,and used as a peak indicator during the bench tuning of the receiver front-end varactor filter. TheRSSI voltage is also used to control the automatic gain control (AGC) circuit at the front-end.

The demodulated signal on pin 27 of U301 is also used for squelch control. The signal is routed toU404 (ASFIC) where squelch signal shaping and detection takes place. The demodulated audiosignal is also routed to U404 for processing before going to the audio amplifier for amplification.

Page 70: Motorola Gp328 338 Service Manual

6A-8 Receiver

4.3 Automatic Gain Control Circuit(Refer to UHF Receiver Front End Schematic Diagram on page 6A-18)

The front end automatic gain control circuit is to provide automatic gain reduction of the front end RFamplifier via feedback. This action is necessary to prevent overloading of backend circuits. This isachieved by drawing some of the output power from the RF amplifier’s output. At high radiofrequencies, capacitor C331 provides the low impedance path to ground for this purpose. CR308 is aPIN diode used for switching the path on or off. A certain amount of forward biasing current is neededto turn the PIN diode on. Transistors Q315 provides this current where upon saturation, current willflow via R347, PIN diode, collector and emitter of Q315 and R319 before going to ground. Q315 is anNPN transistor used for switching here. Maximum current flowing through the PIN is mainly limited bythe resistor R319.

Radio signal strength indicator, RSSI, a voltage signal, is used to drive Q315 to saturation henceturning it on. RSSI is produced by U301 and is proportional to the gain of the RF amplifier and theinput RF signal power to the radio.

Resistor network at the input to the base of Q315 is scaled to turn on Q315, hence activating theAGC, at certain RSSI levels. In order to turn on Q315, the voltage across the transistor’s base toground must be greater or equal to the voltage across R319, plus the base-emitter voltage (Vbe)present at Q315. The resistor network with thermistor RT300 is capable of providing temperaturecompensation to the AGC circuit, as RSSI generated by U301 is lower at cold temperaturescompared to normal operation at room temperature. Resistor R300 and capacitor C397 form an R-Cnetwork used to dampen any transient instability while the AGC is turning on.

Page 71: Motorola Gp328 338 Service Manual

Frequency Generation Circuitry 6A-9

5.0 Frequency Generation Circuitry

The Frequency Generation Circuitry is composed of two main ICs, the Fractional-N synthesizer(U201), and the VCO/Buffer IC (U241). Designed in conjunction to maximize compatibility, the twoICs provide many of the functions that normally would require additional circuitry. The synthesizerblock diagram illustrates the interconnect and support circuitry used in the region. Refer to therelevant schematics for the reference designators.

The synthesizer is powered by regulated 5V and 3.3V which come from U247 and U248 respectively.The synthesizer in turn generates a superfiltered 4.5V which powers U241.

In addition to the VCO, the synthesizer must interface with the logic and ASFIC circuitry.Programming for the synthesizer is accomplished through the data , clock and chip select lines fromthe microprocessor. A 3.3V dc signal from synthesizer lock detect line indicates to the microprocessorthat the synthesizer is locked.

Transmit modulation from the ASFIC is supplied to pin10 of U201. Internally the audio is digitized bythe Fractional-N and applied to the loop divider to provide the low-port modulation. The audio runsthrough an internal attenuator for modulation balancing purposes before going out to the VCO.

Figure 6-3: Frequency Generation Unit Block Diagram

VoltageMultiplier

SynthesizerU201

DualTran-sistor

LoopFilter

VCOBICU241

LowPassFilter

MatchingNetwork

Attenuator

ToMixer

ToPA Driver

VCP

Vmult1Aux3

Aux4

MOD Out

ModulatingSignal

Vmult2

Rx VCO Circuit

Tx VCO Circuit

TRB

16.8 MHzRef. Osc.

Rx Out

Tx Out

Page 72: Motorola Gp328 338 Service Manual

6A-10 Frequency Generation Circuitry

5.1 Synthesizer(Refer to UHF Synthesizer Schematic Diagram on page 6A-20)

The Fractional-N Synthesizer uses a 16.8MHz crystal (FL201) to provide a reference for the system.The LVFractN IC (U201) further divides this to 2.1MHz, 2.225MHz, and 2.4MHz as referencefrequencies. Together with C206, C207, C208, R204 and CR203 , they build up the referenceoscillator which is capable of 2.5ppm stability over temperatures of -30 to 85°C. It also provides16.8MHz at pin 19 of U201 to be used by ASFIC and LVZIF.

The loop filter which consist of C231, C232, C233, R231, R232 and R233 provides the necessary dcsteering voltage for the VCO and determines the amount of noise and spur passing through .

In achieving fast locking for the synthesizer, an internal adapt charge pump provides higher current atpin 45 of U201 to put synthesizer within the lock range. The required frequency is then locked bynormal mode charge pump at pin 43 .

Both the normal and adapt charge pumps get their supply from the capacitive voltage multiplier whichis made up of C258, C259, C228, triple diode CR201 and level shifters U210 and U211. Two 3.3Vsquare waves ( 180 deg out of phase) are first shifted to 5V, then along with regulated 5V , putthrough arrays of diodes and capacitors to build up 13.3V at pin 47 of U201.

Figure 6-4 Synthesizer Block Diagram

DATA

CLK

CEX

MODIN

VCC, DC5V

XTAL1

XTAL2

WARP

PREIN

VCP

REFERENCEOSCILLATOR

VOLTAGEMULTIPLIER

VOLTAGECONTROLLEDOSCILLATOR

2-POLELOOPFILTER

DATA (U409 PIN 100)

CLOCK (U409 PIN 1)

CSX (U409 PIN 2)

MOD IN (U404 PIN 40)

+5V (U247 PIN 4)

7

8

9

10

13, 30

23

24

25

32

47

VMULT2 VMULT1

BIAS1

SFOUT

AUX3

AUX4

IADAPTIOUT

GND

FREFOUT

LOCK 4

19

6, 22, 23, 24

4345

3

2

28

14 15

40

FILTERED 5V

STEERINGLINE

LOCK (U409 PIN 56)

PRESCALER IN

LO RF INJECTION

TX RF INJECTION(1ST STAGE OF PA)

FREF (U201 PIN 21 & U404 PIN 34)

39BIAS2

41

DUALTRANSIS

DUALTRANSIS-

48

5VR5

5, 20, 34, 36(U248 PIN 5)

AUX1

VDD, 3.3V MODOUT

U251LOW VOLTAGEFRACTIONAL-NSYNTHESIZER

TORS

TORS

Page 73: Motorola Gp328 338 Service Manual

Frequency Generation Circuitry 6A-11

5.2 VCO - Voltage Controlled Oscillator(Refer to UHF Voltage Controlled Oscillator Schematic Diagram on page 6A-21)

Figure 6-5 VCO Block Diagram

The VCOBIC (U241) in conjunction with the Fractional-N synthesizer (U201) generates RF in boththe receive and the transmit modes of operation. The TRB line (U241 pin 19) determines whichoscillator and buffer will be enabled. A sample of the RF signal from the enabled oscillator is routedfrom U241 pin 12, through a low pass filter, to the prescaler input (U201 pin 32). After frequencycomparison in the synthesizer, a resultant CONTROL VOLTAGE is received at the VCO. This voltageis a DC voltage between 3.5V and 9.5V when the PLL is locked on frequency.

Presc

RX

TX

MatchingNetwork

Low PassFilter

Attenuator

Pin8

Pin14

Pin10

Level ShifterNetwork

5V

(U201 Pin28)

VCC Buffers

TX RF Injection

U201 Pin 32

AUX4 (U201 Pin3)

AUX3 (U201 Pin2)

Prescaler Out

Pin 12Pin 19Pin 20

TX/RX/BSSwitching Network

U241VCOBIC

RxActive Bias

TxActive Bias

Pin2

Rx-I adjust

Pin1

Tx-I adjust

Pins 9,11,17Pin18

VsensCircuit

Pin15

Pin16

RX VCOCircuit

TX VCOCircuit

RX Tank

TX Tank

Pin7

Vcc-Superfilter

Collector/RF in

Pin4

Pin5

Pin6

RX

TX

(U201 Pin28)

Rx-SW

Tx-SW

Vcc-Logic

(U201 Pin28)

Steer LineVoltage(VCTRL)

Pin13

Pin3

TRB_IN

LO RF INJECTION

VSF

VSF

VSF

Page 74: Motorola Gp328 338 Service Manual

6A-12 Frequency Generation Circuitry

The VCOBIC(U241) is operated at 4.54 V (VSF) and Fractional-N synthesizer (U201) at 3.3V. Thisdifference in operating voltage requires a level shifter consisting of Q260 and Q261 on the TRB line.

The operation logic is shown in Table 6-1.

In the receive mode, U241 pin 19 is low or grounded. This activates the receive VCO by enabling thereceive oscillator and the receive buffer of U241. The RF signal at U241 pin 8 is run through amatching network. The resulting RF signal is the LO RF INJECTION and it is applied to the mixer atT302 (refer to UHF Receiver Front End Schematic Diagram on page 6A-18).

During the transmit condition, when PTT is depressed, five volts is applied to U241 pin 19. Thisactivates the transmit VCO by enabling the transmit oscillator and the transmit buffer of U241. The RFsignal at U241 pin 10 is injected into the input of the PA module (U101 pin16). This RF signal is theTX RF INJECTION. Also in transmit mode, the audio signal to be frequency modulated onto thecarrier is received through the U201 pin 41.

When a high impedance is applied to U241 pin19, the VCO is operating in BATTERY SAVER mode.In this case, both the receive and transmit oscillators as well as the receive transmit and prescalerbuffer are turned off.

Table 6-1: Level Shifter Logic

DesiredMode AUX 4 AUX 3 TRB

Tx Low High (@3.2V) High (@4.8V)

Rx High Low Low

Battery Saver Low Low Hi-Z/Float (@2.5V)

Page 75: Motorola Gp328 338 Service Manual

Notes For All Schematics and Circuit Boards 6A-13

6.0 Notes For All Schematics and Circuit Boards* Component is frequency sensitive. Refer to the Electrical Parts List for value and usage.

1. Unless otherwise stated, resistances are in Ohms (k = 1000), and capacitances are in picofarads(pF) or microfarads (µF).

2. DC voltages are measured from point indicated to chassis ground using a Motorola DC multime-ter or equivalent. Transmitter measurements should be made with a 1.2 µH choke in series withthe voltage probe to prevent circuit loading.

3. Reference Designators are assigned in the following manner:

100 Series = Transmitter

200 Series = Frequency Generation

300 Series = Receiver

400/500 Series = Controller

600 Series = Keypad Board

4. Interconnect Tie Point Legend:

UNSWB+ = Unswitch Battery Voltage (7.5V)

SWB+ = Switch Battery Voltage (7.5V)

R5 = Receiver Five Volts

CLK = Clock

Vdda = Regulated 3.3 Volts (for analog)

Vddd = Regulated 3.3 Volts (for digital)

CSX = Chip Select Line (not for LVZIF)

SYN = Synthesizer

DACRX = Digital to Analog Voltage (For Receiver Front End Filter)

VSF = Voltage Super Filtered (5 volts)

VR = Voltage Regulator

6-LAYER CIRCUIT BOARD DETAIL VIEWINGCOPPER STEPS IN PROPER LAYER SEQUENCE

LAYER 1 (L1)

LAYER 2 (L2)LAYER 3 (L3)LAYER 4 (L4)

LAYER 5 (L5)LAYER 6 (L6)

INNER LAYERS

SIDE 1

SIDE 2

Page 76: Motorola Gp328 338 Service Manual

6A-14 Notes For All Schematics and Circuit Boards

Page 77: Motorola Gp328 338 Service Manual

Circu 6A-15

7.0

C109

C111

112

C11

3

L106

3

2

Q110C119

C171

R103

R10

4

R12

0

R173

C38

1

L310

46

C397

PB504

R300

C39

1

4

R31

6

R325

R33

4

R335

R338

RT301

VR

300

Q315R318

R31

9

RT

300

C33

1

C396

C333

CR

308

R317

R336

R34

2

C10

4

C10

3

C106

C107

CR

102

L102

L104

SH100

C10

1

C102

CR101

L101

L105

C140

C141

L116

C520

PB

505

VR443

C30

2

C301

CR

301

L301

C30

8

C30

3

C304

C30

5

CR

302L302

R301

R302

SH301

C512

C384

C385C36

4

C351

C349C350

C352C353

C35

4

L325

Q320

R355

R32

2

R34

5

R32

0

R32

4

R34

6

C362 C363

CR310

L332

R321SH321

C521

PB501

VR440

C50

5

C50

2

R50

7

VR501

Q505

R506

C513 Q502

R505

C51

1

C51

4 CR503

2

3 4

R50

2

R501

UHF (403-470MHz) Main Board Top Side PCB No. 8480450Z03

http

://w

ww.m

yrad

io16

8.na

me

it Board/Schematic Diagrams and Parts List

Circuit Board/Schematic Diagrams and Parts List

L400R

421

TP405

VR

434VR450 C

R41

3

Q41

7

34

TP406

J403

20

22

C441

C491

C492

C490

C493

C494

C495

C496

C497

R477

R45

0

21

1

C471C472

C473

L401

TP410

VR

447

VR

449

C443

40

R435

TP401

TP402 C427

C444

C428

RT400

85 4

1U

407

J400

C42

3 E407

E40

8E409

R41

8

R437

R410SH400

8 21

U405

17 22

C426 C425

C429

C424R408

R49

2

R42

9

R478

R428

116

U40

6

1732

PB503

3

FL201

B50

3

C43

2

SH201

TP201

C220

C22

9

C21

7

C22

8 L201

L203

C260

C29

4

C23

5

C29

1L2

02

U247

C203

Q210

34

R256

R255

C21

0

C211C21

2

C213

C21

4

C23

0

C292

C23

3

C238

C29

7

L232Q26

0 34

C257

CR

201

C251

C28

9

C253

Q261

34

R26

0

SH241 C247

C28

5

C248

C28

6

L282

Q241

R24

3

R248

R25

3

C273

3

L243

C37

0

C27

6

C27

1

C27

2

L273

3

L253 L271

C37

4

C38

6

L321

R33

3

R33

9

C12

2

C12

5

C16

5

C161

C12

9

C16

9 L114

L115

L113

R16

1

9 16

C11

0

C11

4

C166C

C131

L107

L108

R17

1U10181

C11

8

C121

C160

C115

C117

C116

C12

0

C127

L109

L160

R10

6

R10

7

R108

SH101

TP202

TP302

C37

5

C32

0

C31

9

L309

R348T302

346

C32

2

R30

9

R308

R310SH303

T301

3

C32

4

C32

3

L311

C325FL301

R35

1

R352SH323

B50

4

VR

444

C328

R32

6

R31

Q316

R32

7

PB502

TP415

C40

1

C40

0

CR412 Q40

0

R401

R40

2

R40

3

R405

R40

6R407

R427

R476U400

85

C402

C467

C403

CR

440

Q405

34

R41

6 R481 R44

6

4

C48

2

C48

0

Q403

R44

7

R44

8

SH401

Page 78: Motorola Gp328 338 Service Manual

6A-16 Circuit Board/Schematic Diagrams and Parts List

C372 C371

C373Q310

R330

R33

2

R24

5

R331

C25

5

C252C254

CR

251

L251

R25

1 R25

2

R25

4

U24

1

201

11

224

13

25

U201

C29

6C

258

C25

9

U21

0

3 4

U21134

264

C21

8

C29

8

C20

2

C204

C20

6

C20

7

C208263

C265

CR

203

R204

R281

C27

9

C523VR442

C43

6

C437

R42

0

R42

6

C431

C433

3

FL4

01

R46

3R

414

R415

C43

5

CR

411

Q41

6

R460

C434

R462R419

R46

1

U41

0

U40

9

76

1

C45

3

C45

6

L410

L411

R409R41

1 R457

R43

2

C458

C459

C466

E400

C44

9C

463

E40

1

E402

E40

326

E404

E405

E406

SH402

51

C40

7

C479

R475

R42

5R44

5R

449

C42

0

C41

9

C42

1

C481

R41

3

SH403 C42

2C

416 C44

7C

448

C475

R400

R423

R424

R431

R472

25

20 11

13

37

1

U404C408

C409

C41

1

C41

4

C45

1

C410

C430

C41

5

C440

C45

2

R436

R43

4

C450

C476

Q410

34 R471

U420

101

C445

VR

432

VR

433

C442

VR

445

VR

446

VR

448

R47

3

UHF (4

http

://w

ww.m

yrad

io16

8.na

me

C10

8

J101

4

3

2

J102

R10

1

2

S501

C8

C4

CR

303

L303

SH302

C30

7R

340

R32

8

C309R303

R30

4

C315

C32

1C310

C31

4 C306C31

1R

347

R30

5 C313

C318

C380

C316

C31

7

C31

2

CR304CR305

R30

6

R30

7

C39

5L340

L306 L307

L305L304Q30

1

C33

7

C34

7 C34

8

C35

6C33

9

C34

0

C34

1

C34

2

C343

C383

C390

C346

C357C358

R344

C34

5

C33

4

C359

SH322

132537

1

U30

1

C32

9

C33

6

C360

C35

5

C361

L314

C344

C38

2

L331

R34

3

R350

C32

7C

330

C32

6

C338

L330

Q30

2R

315

R31

3

R311

R312

C503

CR306

F50

1SH304

C123E101

R32

9

VR

439

C130

C138 C151

C170

C12

6

C128

C150C152

L112

R10

2

C10

5

C17

4

C133

C13

5

C13

4

CR105

R109

R130

R131 R132

25

9

17

U10

2

1

C29

5

C37

8

CR241L281L2

42

R11

0R

112

R11

1

R349

C28

110

C24

1

C246

C24

2

C243

C250

C24

4

C245

CR

242

CR

243

L241

R242R241

R24

4

SH242

C

C23

1

C232

C234

R23

1R

232

R23

3

37

1

C20

1

C223

C219

C29

3

L261

R202

R201

SH202

C

C

C27

7

C522

C27

8

L505

U24

8V

R44

1

VR

506

2 S502

3 5

4

B50

1

32

1

C13

2

C17

3

C172

H10

1

P10

0

Q111

34

R170

R13

3

R172

CR501

03-470MHz) Main Board Bottom Side PCB No. 8480450Z03

Page 79: Motorola Gp328 338 Service Manual

Circu 6A-17

100pFC503 VR506

6.8V10VVR439

L505390nH

24V

21

F501

TT_CODE

BATT –

BATT +

RADIO_CODEBATTERY_CONTACT

CONN_J

B501

2 DATA1 NEG3 POS

6.8VVR443

12SWITCHPB505

.01uFC520

47KR506

050K

GREEN_LED

1

38

UHF Controls And Switches Schematic Diagram

http

://w

ww.m

yrad

io16

8.na

me

it Board/Schematic Diagrams and Parts List

DEMOD

LVZIF_SEL

RSSI

16.8MHz

CLK

DACRx

DATA

Vdda

Vdda

RX_IN RX_INJ

R5

RECEIVER

DATA

CLK

DACRX

DEMOD

RSSI

LVZIF_SEL

16.8MHz

RX_INJ

SWB+

TX_INJ

Vdda

FGU

16.8MHz4V_3.3V

5V

CLK

CSX

DATA

LOCK

MODIN

R5CSX

4V_3.3V

SWB+

LOCK

MODIN

5V

DATA

RESETRX_IN TX_INJ

UNSWB+

TRANSMITTER

5V

CLK

CSX

5VUNSWB+

RESET

B503

B504

LI_ION

C505100pF

R5070

C5020.47uF

VR5016.8V

1

5

HIG

H

3 2

SWITCHS502

4

LOW

Vdda

VOL

MECH_SWB+

2

CR5011

BAUNSWB+

PB501

12SWITCH

.01uFC521

6.8VVR440

SB1

12

PB502SWITCH

C522.01uF

VR4416.8V

PB503

SB2

C523.01uF 6.8V

VR442

SWITCHPB504

12

12SWITCH

VR4446.8V

PTT

SB3

EMER

Q505

R51

Vdda

IMX1

51

6

24

3

SWB+

RED_LED

Q502

680R501

180R502

4

1 3CR503

2

RTA0

RTA1

RTA2

RTA3

100pFC514

100pFC513

100pFC511

100pFC512

SWITCHS501

GND GND

PCPC2C0C1

PC0PC1

4C0C1

12

7 9

Page 80: Motorola Gp328 338 Service Manual

6A-18 Circuit Board/Schematic Diagrams and Parts List

100pFC386

Q3101

3

2NU

R331 C372R330 C371NU NU NU NU

2 1

R335

RT301

R338

C3916.8KR325

R5

NU

NUNU

NU

RSSI

RX_INJ

100pFC370

0R339

R332NU

100pFC374R333

0R349

L321

C373

NU NU

NUC378NU

100pFC375

16.28nHL309

C320 C3197.5pF 1.8pF

2T302XFMR

46

31

C3819.1pF

TP3023.6KR348

R5

7.5pFC318

9.1pFC317

R3290

5

2

XFMRT301

4

6

3

1

18R309

270270R310R308

CR30634

IF

2 1

82pFC322

L310150nH

UHF R

http

://w

ww.m

yrad

io16

8.na

me

VR300

R326

Q316

13

2

R334

NU

NUNU

NU

33.0KRT300

2

1

13

2

Q315

R319150

R31818K

R32733K

C333

R336

R5

NU

NU

R31691K

C396NU

C3971uF

2.2KR300

CR30CR304

100KR307R306

100K

L30613.9nH

L30713.9nH

C3163.9pF

C31310pF

C311

27nHL305 6.8pF

C312

C306

NU

NU

R3031K

C3100.1uF

Q301

13

2

R3406.8K

2.7R328

C3140.1uF510

12K

R305

C309100pF

R304

180nHL304

100pFC321

100pFC315

R5R342100K

C380.01uF

DACRx

R3171K

23

CR308HSMP3820

1

100pFC331C395

100pF

L340390nH

R3471K

R5

C3013.6pF

RX_INCR301

13.9nHL301C302

10pF

CR302

R302100K

R301100K

3.9pFC303

100pFC308

C30520pF

L30213.9nH

C3049.1pF

CR303

2

3

1 220nHL303

C3070.1uF

SHIELDSH301

1

RXFE Top Shield

SH302

1

SHIELD

1

SH304SHIELD

RXFE Bottom Shield

RX Mixer Diod Shield

SH303SHIELD

1

Mixer Shield

eceiver Front End Schematic Diagram

Page 81: Motorola Gp328 338 Service Manual

Circu 6A-19

DEMOD

100KR350

C390100pF

100pFC383

Vdd_FILTERED

C349.022uF

C350330pF

C35120pF

.8MHz

BFQ67WQ320

3

212pFC352

1

C35343pF

0R355

R3203.9K

2.2uHL325

R34656K

47pFC354

2KR324

CR310

C38556pF 100nH

L332

1KR321 R322

200K8200pFC364C362

0.1uF

C3631uF

C38456pF10K

R345

UHF Receiver Back End Schematic Diagram

http

://w

ww.m

yrad

io16

8.na

me

it Board/Schematic Diagrams and Parts List

Vdd_FILTERED

(SOURCE)

L3312.2uH

R34310

10uFC382

C3290.1uF

0.1uFC348

0.1uFC344

Vdda

C3430.22uF

0.1uFC347 C346

0.1uF 0.1uFC345

R34412K

.022uFC334

16

CLKDATA

LVZIF_SEL

0.22uFC357

1200pFC358

C3590.1uF

VA

G

VA

G_R

EF

RO

SE

_VC

CR

OS

E_V

SS

LIM

PH

AS

E_L

OC

KD

EM

OD

_OU

T

C4M

DE

MO

D_H

F

C1M

C2M

C3M

TESTAIOUT

MLPD_CR

FREFGND

GOLD_VSS

CEXCLK

COL

DATA

BROWN_VCCBRP_OFF

PRE_AGC

GREEN_VSSMIX_BYP

MIX_INPREAMP_OUT

GREEN_VCC

C3PC4P

BLUE_VSS

C1PC2P

BLUE_VCC

TE

ST

DV

PP

PR

E_I

N

RE

D_V

CC

RE

D_V

SS

RS

SI_

FLT

RS

SI_

OU

T

EM

IT

EX

TB

S

GO

LD_V

CC

AF

C

BA

SE

U30132D83

8 931 2 54 116 107 12

1615

24

2120

14

1918

13

17

2223

48

4342

4647

41

3837

44

4039

45

32 2530 2931 262736 28333435

0.15uF

15pFC338

C361.01uF

RSSI

C3280.1uF

R3143K

R5

330R313

C355

C337100pF

.022uFC356

C326.01uF

L3142.2uH

C3360.1uF

Vdd_FILTERED

C3421uF

C3411uF

C3401uF

1uFC339

LVZIF BTM SHEILDCRYSTAL FILTER SHIELD LVZIF TOP SHEILD

SH322SHIELD

SH321SHIELD

SH323SHIELD

111

C360.022uF

680nHL330

C33010pF

C327100pF

2.4KR312 Q302R351

0

R31512K

.01uFC325

30KR311

3.3KR352

XTALFL301

TBD

OUTIN

GN

DG

ND

1G

ND

2G

ND

3

36

1 2 4 5

IF

C323150pF

L311750nH

20pFC324

Page 82: Motorola Gp328 338 Service Manual

6A-20 Circuit Board/Schematic Diagrams and Parts List

SWB+

LP2980U248

ON

_OF

F*

VIN

GND

VO

UT

NC

3 1

5

2

4

C277100pF 2.2uF

C278

4V_3.3V

C2330.1uF

C2792.2uF

.047uFC232

C2340.47uF

R231120

0.1uFC231

620R232

R233560

12uHL232

VCTRL

470pFC238

1TP202

UHF S

http

://w

ww.m

yrad

io16

8.na

me

GND3

2

NC

1 4

U210TC7SET04FU

VCC5

GND3

2

NC

1 4

VCC5

U211TC7SET04FUC296

0.1uF

C265NU 100pF

C257

A2A3

K1K2K3

A1

CR201

54

6123

C258.01uF

.01uFC259

C230100pF 1000pF

C2294.7uFC228

C2190.22uF

0.1uFC292

C2980.1uF

L2022.2uH

(SOURCE)5V

0.47uFC291

0.1uFC223

2.2uFC235

246

53

1

U247ADP3300

GN

D

INSD

NROUTERR

C2930.47uF100pF

C294

L2032.2uH

Vdda

R2554.3K

R25630

R5

1

3

Q210

2

4

5V

100pFC260

AUX3AUX4

LOCK

C213100pF

TP2011

XTAL1XTAL2

VMULT1VMULT2VMULT3VMULT4

MODOUTFREFOUT

AUX4

AUX1AUX2AUX3

2324

15141211

1941

48123

TEST2

WARP

SFOUT

TEST1

IADAPT

INDMULT

IOUT

LOCKADAPTSW

25

28

3738

45

16

43

446

VC

PV

RO

PR

E_V

DD

PD

_VD

D

DV

DD

AV

DD

47135 34 3620

VBPASSPVREF

SFIN

MODIN

BIAS1BIAS2

CEXCLK

DATA

2135

30

10

4039

98

7

REFSEL

SFBASESFCAP

NC1NC2NC3

PREIN

CCOMP

18

2726

172931

32

42

PD

_GN

DP

RE

_GN

D

DG

ND

AG

ND

44336 22

U20163A27

C204

100KR202

82KR201

100pFC211

C214100pF

DATAMODIN

2.2uF

100pFC264

39nHL261

C2630.75pF

PRESC

100pFC210

C212100pF

CSXCLK

VSF

1000pFC202C201

100pF 4.7uFC203

SH201SHIELD

1

SYNTHESIZER TOP SHIELD

SH202SHIELD

1

SYNTHESIZER BOTTOM SHIELD

R20447K

CR203

45J49FL201

GND3

IN1

OUT2

C2081.6pF

C20756pF

C206330pFNU

R281

0.1uFC224

2.2uFC217 C218

0.1uF 100pFC220

2.2uHL201

16.8MHz

ynthesizer Schematic Diagram

Page 83: Motorola Gp328 338 Service Manual

Circu 6A-21

CR251

10pFC252

0.1uFC248

100pFC251

L25133nH

CR242

L241

CR243

390nHVCTRL

100pFC241

2

CR241

1

3VSF

C2442pF

Rx_sw

1

7.5pFC242

7.5pFC243

C2507.5pF

220nHL242

243NATOR

2

3

UHF Voltage Controlled Oscillator Schematic Diagram

http

://w

ww.m

yrad

io16

8.na

me

it Board/Schematic Diagrams and Parts List

33nHL273

390nHL281

100pFC281

240R245

2.2uFC276

NUC272

0.1uFC273

C2860.1uF

L27168nH

Rx_swTx_sw

PRESC

NUC271

TX_SWITCH

VC

C_B

UF

FE

RS

VC

C_L

OG

IC

RX_OUT

RX_SWITCH

SUPER_FLTR

TRB_IN

TX_BASE

TX_EMITTER

TX_IADJTX_OUT

FLIP_IN

GN

D_B

UF

FE

RS

GN

D_F

LAG

GN

D_L

OG

IC

PRESC_OUT

RX_BASE

RX_EMITTER

RX_IADJ

COLL_RFINU24150U54

11 917

10

13

8

7

12

23

19

1615

1

4

20

56

1418

1

SHIELDSH242

1

SH241SHIELD

VCO TOP SHIELD VCO BOTTOM SHIELD

R2601K

C297.01uF

4

1

3

Q260

2AUX3

5V

AUX4

1

3

Q261

2

100pFC289

330R252 R251

18

100pFC255

R2547.5K

1

2

3

3.6pF

L253RESONATOR

C254

P1

P2

P3

C2531.5pF

C247100pF

30R248

7.5KR253

Tx_sw

L282390nH

1

3

2Q241BFQ67W

R24412K

R24310K

2.4pFC245

100pFC246

R24118

R242200

LRESO

VSF

C285100pF

TX_INJ

RX_INJ

4

Page 84: Motorola Gp328 338 Service Manual

6A-22 Circuit Board/Schematic Diagrams and Parts List

VAR1

VAR2

VAR3

VG

VL VLIM

RS

RS

ET

RXT1

TE

MP

V10

V45

V5EXT

F16

8GND1

GN

D2

INTNA

QQX

RFIN CE

X

CI

CJ

CL

CLK

CQ

CQ

XD

AT

A

AN

O

BP

OS

U102H99S

20

18

24

19

21

23

17

22

31 30 2529 262832 27

6

2

8

4

1

3

5

7

1514 169 1110 12 13

C173.022uF

10KR131

GND3

1

PO

S

2VOUT

LM50CR105

10KR130

0.1uFC126

C170100pF

5V

100pFC110

RESET

C132100pF

C105100pF

6

4

1

3

Q111

2

UNSWB+

100pFC174

100pFC122

R133

CLK

DATA

UNSWB+

CSX

NU

.022uFC131

14nH

R132470K

UNSWB+

13400pF .022uF

C135

C138100pF

51213

4

GND2GND3GND4

NC

1N

C2

NC

3N

C4

GND1

167

8 9 10 15

.022uFC128100pF

C130

UNSWB+

22uF152

R108NU

UHF Tr

http

://w

ww.m

yrad

io16

8.na

me

L1390

7.5pFC129

5.6nHL113

100pFC165

C166100pF

3.9pFC169

C33

1000pFC133

R109200K

L115390nH

RF

OU

T1

RF

OU

T2

VC

NT

RL

VD

1V

G1

VG

2

RF

IN

G2

U1009Z

1 1416 11

6 7 2 3

C1610.1uF

200R161

C1271000pF

390nHL112

100pFC160

10pFC120

C121100pF

15.0nHL160

.0C

R107C151100pF C150

.022uFNU

300R110

2KR104

R11120

300R112 C125

100pF

C295100pF

TX_INJ

4.22nHL108

11.03nHL109

C118100pF

30pFC117

10R106

C11633pF15pF

C115

2

Q110

R10343

0.1uFC172

R172200

Microstrip

C113

L106

10pF

7.66nH

19.61nHL104

C11113pF

1

3C11247pF

RX_IN

MicrostripMicrostrip

C108100pF

CR101

C109100pF

L105390nH

R101240 UNSWB+

C1046.2pF

19.61nHL101

C10310pF6.2pF

C102

19.61nHL102

100pFC101

4GND

1

2

3

J101RF_JACK

C1419.75nHL116

NU

TAB11

TAB22

TAB33

TAB44

TAB55

ANTENNA_NUTJ102

POS1

HEATSINKH101 C140

NU

P100

R170240

BEADE101

C123

0.1

10uF

R102

100pFC114

33.47nHL107

3.3pFC107C106

4.7pF

CR102A1

1

A2

2

3K

R171C171100pF

R1731MEG

100pFC119 0

R120

1

SHIELDSH100

HF SHIELD

1

SH101SHIELD

PA SHIELD

NU

ansmitter Schematic Diagram

Page 85: Motorola Gp328 338 Service Manual

Circu 6A-23

UHF

CircR

B501B503

B504

C101C102C103C104C105C106C107C108C109C110C111C112C113C114C115C116C117C118C119C120C121C122C123C125C126C127C128C129C130C131C132C133C134C135C138C150C151C152C160C161C165C166C169C170

0pF

0pF

0pFF

0pFpF0pF

0pF

0pF

0pF

pFpF

0pF0pF

pF0pF

Description

C340 2180478Z20 1uFC341 2180478Z20 1uFC342 2180478Z20 1uFC343 2113743A23 0.22uFC344 2113743M24 100000pFC345 2113743M24 100000pFC346 2113743M24 100000pFC347 2113743M24 100000pFC348 2113743M24 100000pFC349 2113743E07 0.022uFC350 2113743L05 330pFC351 2113743N33 20pFC352 2113743N28 12pFC353 2113743N41 43pFC354 2113743N42 47pFC355 2113743A24 0.33uFC356 2113743M08 22000pFC357 2113743A23 0.22uFC358 2113741A23 1200pFC359 2109720D14 0.1uFC360 2113743E07 0.022uFC361 2113741F49 10nFC362 2113743M08 22000pFC363 2311049A40 2.2uFC364 2113743L41 10000pFC370 2113743N50 100pFC374 2113743N50 100pFC375 2113743N50 100pFC380 2113743L41 10000pFC381 2113743N21 6.2pFC382 2311049A59 10uFC383 2113743N50 100pFC384 2113743N44 56pFC385 2113743N44 56pFC386 2113743N50 100pFC390 2113743N50 100pFC395 2113743N50 100pFC397 2311049A05 0.47uFC400 2113743L41 10000pFC401 2113743M24 100000pFC402 2113743M24 100000pFC403 2113743G24 2.2uFC407 2113928N01 0.1uFC408 2113743N50 100pFC409 2113743M24 100000pFC410 2113928N01 0.1uFC411 2113743M24 100000pFC414 2113743M24 100000pFC415 2185895Z01 0.01uFC416 2113928N01 0.1uFC420 2113743L41 10000pF

CircuitRef

MotorolaPart No. Description

http

://w

ww.m

yrad

io16

8.na

me

it Board/Schematic Diagrams and Parts List

Radio Parts List

uitef

MotorolaPart No. Description

0986237A02 Battery Contact Module3980502Z01 Backup Contact, B+ (not used

in GP328)3980501Z01 Backup Contact, B- (not used

in GP328)2113740F51 100pF2113740F22 6.2pF2113740F27 10pF2113740F22 6.2pF2113743N50 100pF2113740F19 4.7pF2113740F15 3.3pF2113743N50 100pF2113740F51 100pF2113743N50 100pF2113740F30 13pF2180605Z32 47pF2180605Z16 10pF2113743N50 100pF2113743N30 15pF2113743N38 33pF2113743N37 30pF2113743N50 100pF2113743N50 100pF2113743N26 10pF2113743N50 100pF2113743N50 100pF2311049A18 10uF2113743N50 100pF2113743M24 100000pF2113743L17 1000pF2113743M08 22000pF2113743N23 7.5pF2113743N50 100pF2113743M08 22000pF2113743N50 100pF2113743L17 1000pF0662057N47 1M2113743M08 22000pF2113743N50 100pF2113743M08 22000pF2113743N50 100pF2113743M08 22000pF2113743N50 100pF2113743M24 100000pF2113743N50 100pF2113743N50 100pF2113743N20 5.6pF2113743N50 100pF

C171 2113743N50 100pFC172 2113740F51 100pFC173 2113743M08 22000pFC174 2113743N50 100pFC201 2113743N50 100pFC202 2113743L17 1000pFC203 2311049A56 4.7uFC204 2104993J02 2.2uFC206 2113740F63 330pFC207 2113743N44 56pFC208 2113743N08 1.6pFC210 2113743N50 100pFC211 2113743N50 100pFC212 2113743N50 100pFC213 2113743N50 100pFC214 2113743N50 100pFC217 2104993J02 2.2uFC218 2113743M24 100000pFC219 2113743K16 0.22uFC220 2113743N50 100pFC223 2113743M24 100000pFC224 2113743M24 100000pFC228 2311049J11 4.7uFC229 2113743L17 1000pFC230 2113743N50 100pFC231 2113743M24 100000pFC232 2113743E12 0.047uFC233 2311049A01 0.1uFC234 2311049A05 0.47uFC235 2104993J02 2.2uFC238 2113741F17 470pFC241 2113743N50 100pFC242 2113743N23 7.5pFC243 2113743N23 7.5pFC244 2113740F10 2.0pFC245 2113743N11 2.4pFC246 2113743N50 100pFC247 2113743N50 100pFC248 2113743M24 100000pFC250 2113743N23 7.5pFC251 2113743N50 100pFC252 2113743N26 10pFC253 2113740F09 1.8pFC254 2113743N15 3.6pFC255 2113743N50 100pFC257 2113743N50 100pFC258 2113743L41 10000pFC259 2113743L41 10000pFC260 2113743N50 100pFC263 2113743N02 0.75pFC264 2113743N50 100pF

CircuitRef

MotorolaPart No. Description

C273 2113743M24 10000C276 2104993J02 2.2uFC277 2113743N50 100pFC278 2311049A57 10uFC279 2104993J02 2.2uFC281 2113743N50 100pFC285 2113743N50 100pFC286 2113743M24 10000C289 2113743N50 100pFC291 2311049A69 10uFC292 2113743M24 10000C293 2113743A27 0.47uC294 2113743N50 100pFC295 2113743N50 100pFC296 2113743M24 10000C297 2113743L41 10000C298 2113743M24 10000C301 2113743N15 3.6pFC302 2113743N26 10pFC303 2113740L08 3.9pFC304 2113743N26 10pFC305 2113743N33 20pFC307 2113743M24 10000C308 2113743N50 100pFC309 2113743N50 100pFC310 2113743M24 10000C312 2113743N25 9.1pFC313 2113743N26 10pFC314 2113743M24 10000C315 2113743N50 100pFC316 2113740L08 3.9pFC317 2113743N25 9.1pFC318 2113743N23 7.5pFC319 2113743N69 1.8pFC320 2113743N23 7.5pFC321 2113743N50 100pFC322 2113743N48 82pFC323 2113743N54 150pFC324 2113743N33 20pFC325 2113743L41 10000C326 2113743L41 10000C327 2113743N50 100pFC328 2113743M24 10000C329 2113743M24 10000C330 2113743N26 10pFC331 2113743N50 100pFC334 2113743M08 22000C336 2113743M24 10000C337 2113743N50 100pFC338 2113743N30 15pFC339 2180478Z20 1uF

CircuitRef

MotorolaPart No.

Page 86: Motorola Gp328 338 Service Manual

6A-24 Circuit Board/Schematic Diagrams and Parts List

C421C422C423C424C425C426C427C428C429C430C431C433C434C435C436C437C440C441C442C443C444C445C447C448C449C451C452C453C456C458C459C463C466C467C471C472C473C475C476C479C480C481C482C490C491C492C493C494C495C496C497

CircuiRef

eader

nutnnectornnector

ered Teflon resona-

ered Teflon resona-

escription

L400 2462587Q42 390nHL401 2462587Q42 390nHL410 2462587Q42 390nHL411 2462587Q42 390nHL505 2462587Q42 390nHP100 3905643V01 Ground contact fingerPB501 4080523Z01 Tactile switchPB502 4080523Z01 Tactile switchPB503 4080523Z01 Tactile switchPB504 4080523Z01 Tactile switchPB505 4080523Z01 Tactile switchQ110 4802245J55 RF Power amplifierQ111 4802245J50 Dual NPN/PNP TransistorQ210 4802245J50 Dual NPN/PNP TransistorQ241 4805218N63 RF NPN transistorQ260 4802245J50 Dual NPN/PNP TransistorQ261 4802245J50 Dual NPN/PNP TransistorQ301 4802245J44 NPN TransistorQ302 4802245J44 NPN TransistorQ315 4880214G02 NPN TransistorQ320 4805218N63 RF NPN transistorQ400 4809579E18 Mosfet P-chanQ403 4880214G02 NPN TransistorQ405 4802245J54 Dual NPN TransistorQ410 4802245J54 Dual NPN TransistorQ416 4809579E18 Mosfet P-chan (not used in

GP328)Q417 4802245J50 Dual NPN/PNP TransistorQ502 5180159R01 Dual NPN TransistorQ505 4880214G02 NPN TransistorR101 0662057A34 240R102 0680539Z01 0.1R103 0662057M41 43R104 0662057N15 47kR106 0662057M26 10R108 0662057M92 5600R109 0662057N30 200kR110 0662057M61 300R111 0662057M33 20R112 0662057M61 300R120 0662057N14 43kR130 0662057M98 10kR131 0662057N05 18kR132 0662057N33 270kR161 0662057M57 200R170 0662057A34 240R171 0662057N14 43kR172 0662057A32 200R173 0662057N29 180kR201 0662057N21 82kR202 0662057N23 100k

CircuitRef

MotorolaPart No. Description

http

://w

ww.m

yrad

io16

8.na

me

2113928N01 0.1uF2113743M24 100000pF2113743N50 100pF2311049A59 10uF2113743M24 100000pF2113743N50 100pF2113743N50 100pF2113743M24 100000pF2113743M24 100000pF2113928N01 0.1uF2113743N50 100pF2113743L41 10000pF2113928N01 0.1uF (not used in GP328)2113743M24 100000pF2113743N34 22pF (not used in GP328)2113743N34 22pF (not used in GP328)2113743G26 4.7uF2113743N50 100pF2113743E20 10uF2113928N01 0.1uF2113743N50 100pF2113743N50 100pF2113743M08 22000pF2113928N01 0.1uF2113743N50 100pF2113743M08 22000pF2113743B29 1uF2113743N50 100pF2113743N50 100pF2113743N50 100pF2113743N50 100pF2113743N50 100pF2113743N50 100pF2113928N01 0.1uF2113743N50 100pF2113743L09 470pF2113743L09 470pF2113743H14 10uF2113928D08 10uF2113928N01 0.1uF2113743G26 4.7uF2113928N01 0.1uF2113928N01 0.1uF2113743N50 100pF2113743N50 100pF2113743N50 100pF2113743N50 100pF2113743N50 100pF2113743N50 100pF2113743N50 100pF2113743N50 100pF

t MotorolaPart No. Description

C502 2311049A05 0.47uFC503 2113743N50 100pFC505 2113743N50 100pFC511 2113743N50 100pFC512 2113743N50 100pFC513 2113743N50 100pFC514 2113743N50 100pFC520 2113743L41 10000pFC521 2113743L41 10000pFC522 2113743L41 10000pFC523 2113743L41 10000pFCR101 4880973Z02 Pin diodeCR102 4802245J41 Pin diodeCR105 5185963A15 Temperature SensorCR201 4802233J09 Triple diode (SOT 25)CR203 4862824C03 VaractorCR241 4805649Q13 VaractorCR242 4862824C08 VaractorCR243 4862824C08 VaractorCR251 4802245J22 VaractorCR301 4862824C08 VaractorCR302 4862824C08 VaractorCR303 4880154K03 Dual common anode-cathode

diodeCR304 4862824C08 VaractorCR305 4862824C08 VaractorCR306 4802245J42 Ring Quad diode (SOT-143)CR308 4802245J41 Pin diodeCR310 4862824C08 VaractorCR411 4802245J47 Schottky diodeCR412 4802245J47 Schottky diodeCR413 4802245J47 Schottky diodeCR440 4813833C02 Dual common cathode diodeCR501 4880107R01 RectifierCR503 4805729G49 Red/Yellow LEDE101 2484657R01 Ferrite beadE400 2480640Z01 Ferrite beadE401 2480640Z01 Ferrite beadE402 2480640Z01 Ferrite beadE403 2480640Z01 Ferrite beadE404 2480640Z01 Ferrite beadE405 2480640Z01 Ferrite beadE406 2480640Z01 Ferrite beadE407 2480640Z01 Ferrite beadE408 2480640Z01 Ferrite beadE409 2480640Z01 Ferrite beadF501 6580542Z01 3A fuseFL201 4802245J49 16.8MHz Xtal oscillatorFL301 4802245J43 Xtal Filter 45.1MHzFL401 4870368G02 Real Time clock Osc Xtal (not

used in GP328)

CircuitRef

MotorolaPart No. Description

H101 2680499Z01 Heat sprJ101 0985613Z01 RF JackJ102 0280519Z02 AntennaJ400 0905505Y04 40-pin coJ403 0905505Y02 20-pin coL101 2479990B02 19.61nHL102 2479990B02 19.61nHL104 2479990B02 19.61nHL105 2462587N22 390nHL106 2479990A02 7.66nHL107 2479990G01 33.47nHL108 2479990A01 4.22nHL109 2479990B01 11.03nHL112 2462587N45 22nHL113 2413926H09 0.3nHL114 2462587N22 390nHL115 2462587N22 390nHL116 2479990A03 9.75nHL160 2413926H14 15nHL201 2462587Q20 2200nHL202 2462587Q20 2200nHL203 2462587Q20 2200nHL232 2462587P25 12000nHL241 2462587V41 390nHL242 2462587V38 220nHL243 2460593C01 Multi-lay

tor, RxL251 2462587V28 33nHL253 2460593C02 Multi-lay

tor, TxL261 2462587V29 39nHL271 2462587V32 68nHL273 2462587V28 33nHL281 2462587V41 390nHL282 2462587V41 390nHL301 2479990C01 13.9nHL302 2479990C01 13.9nHL303 2462587V26 22nHL304 2462587V37 180nHL305 2462587V26 22nHL306 2479990C01 13.9nHL307 2479990C01 13.9nHL309 2479990C02 16.28nHL310 2462587V36 150nHL311 2462587N65 750nHL314 2462587N72 2200nHL325 2480646Z20 2.2uHL330 2462587N64 680nHL331 2480646Z20 2.2uHL332 2462587N53 100nHL340 2462587V41 390nH

CircuitRef

MotorolaPart No. D

Page 87: Motorola Gp328 338 Service Manual

Circu 6A-25

* Motorola Depot Servicing only

R204R231R232R233R241R242R243R244R245R248R251R252R253R254R255R256R260R300R301R302R303R304R305R306R307R308R309R310R311R312R313R314R315R316R317R318R319R320R321R322R324R325R327R328R329R339R340R342R343R344R345

CircR

MISTOR_33KMISTOR_33Kency Switche/on-off switchnic Filter shieldshield

esizer top shieldesizer bottom shieldators shielduffer IC shield

ver front end shieldver front end bottom

shielddiode shield2nd LO shieldshieldl Filter shieldller Memory Shieldller on-off shieldrocessor shield

Cmp/Audio PA shieldtransformertransformerS driver IC

CN Synthesizer ICerer

uffer ICgulatorEGULATOR IN

3-5 PKGICegulator

CmpX 8 FLASH ROM8 EEPROMrocessoregulator (not used in

8)

Description

U420 5102463J44 Audio amplifierVR432 4805656W08 Zener diode-5.6VVR433 4805656W08 Zener diode-5.6VVR434 4802245J73 Zener diode-6.8VVR439 4880140L17 Zener diode-12VVR440 4802245J73 Zener diode-6.8VVR441 4802245J73 Zener diode-6.8VVR442 4802245J73 Zener diode-6.8VVR443 4802245J73 Zener diode-6.8VVR444 4802245J73 Zener diode-6.8VVR445 4802245J53 Zener diode-10VVR446 4802245J74 Zener diode-10VVR447 4802245J74 Zener diode-10VVR448 4802245J74 Zener diode-10VVR449 4802245J74 Zener diode-10VVR450 4802245J75 Zener diode-12VVR501 4813830A18 Zener diode-6.8VVR506 4802245J73 Zener diode-6.8V

1485777Z01 Insulator8480450Z03 UHF Band 1 main PC Board

CircuitRef

MotorolaPart No. Description

http

://w

ww.m

yrad

io16

8.na

me

it Board/Schematic Diagrams and Parts List

0662057N15 47k0662057M52 1200662057M69 6200662057M68 5600662057M32 180662057M57 2000662057M98 10k0662057N01 12k0662057M59 2400662057M37 300662057M32 180662057M62 3300662057M95 75000662057M95 75000662057M89 43000662057M37 300662057M74 10000662057M82 22000662057N23 100k0662057N23 100k0662057M74 10000662057N01 12k0662057M67 00662057N23 100k0662057N23 100k0662057M60 2700662057M32 180662057M60 2700662057N10 30k0662057M83 24000662057M62 3300662057M85 30000662057N01 12k0662057A96 91k0662057M74 10000662057A79 18k0662057A29 1500662057M74 10000662057M83 24000662057N30 200k0662057M81 20000662057M94 68000662057N11 33k0662057M12 2.70662057M01 00662057M01 00662057M94 68000662057N23 100k0662057M26 100662057N01 12k0662057M98 10k

uitef

MotorolaPart No. Description

R346 0662057N17 56kR347 0662057M74 1000R348 0662057M87 3600R349 0662057C01 0R350 0662057N23 100kR351 0662057C01 0R352 0662057M86 3300R355 0662057M01 0R400 0662057N15 47kR401 0662057M01 0R405 0662057M01 0R406 0662057N20 75kR407 0662057N19 68kR409 0662057M98 10kR410 0662057N23 100kR411 0662057M98 10kR413 0662057M01 0R414 0662057V34 180kR415 0662057V26 91kR416 0662057M90 4700R418 0662057M01 0R419 0662057M67 0 (not used in GP328)R420 0662057B46 10M (not used in GP328)R421 0662057M81 2000R423 0662057N39 470kR424 0662057N12 36kR425 0662057N10 30kR426 0662057N35 330k (not used in GP328)R427 0662057M84 2700R428 0662057M10 2.2R429 0662057M98 10kR431 0662057N39 470kR432 0662057N16 51kR434 0662057M62 330R435 0662057M81 2000R436 0662057M01 0R445 0662057N08 24kR446 0662057N22 91kR447 0662057N38 430kR448 0662057N06 20kR449 0662057N08 24kR450 0683962T45 68 ohms, 1WR457 0662057M98 10kR460 0662057M90 4700R461 0662057M56 180 (not used in GP328)R462 0662057M98 10k (not used in GP328)R463 0662057M61 300R471 0662057N06 20kR472 0662057N12 36kR473 0662057M26 10R475 0662057M01 0

CircuitRef

MotorolaPart No. Description

R476 0662057N35 330kR477 0662057M74 1000R478 0662057M98 10kR481 0662057N08 24kR492 0662057M01 0R501 0662057M70 680R502 0662057M56 180R505 0662057M98 10kR506 0662057N15 47kR507 0662057M01 0RT300 0680590Z01 THERRT400 0680590Z01 THERS501 4080710Z01 FrequS502 1880619Z02 VolumSH100 2680507Z01 HarmoSH101 2680510Z01 RF PASH201 2680511Z01 SynthSH202 2680511Z01 SynthSH241 2680513Z01 ResonSH242 2680514Z01 VCO BSH301 2680554Z01 ReceiSH302 2680555Z01 Recei

shieldSH303 2680509Z01 MixerSH304 2680624Z01 MixerSH321 2680508Z01 LVZIFSH322 2680514Z01 LVZIFSH323 2680553Z01 CrystaSH400 2680505Z01 ControSH401 2680506Z01 ControSH402 2680515Z01 MicropSH403 2680516Z01 Asfic_T301 2580541Z02 BalunT302 2580541Z02 BalunU101 5105109Z67 LDMOU102 5185765B28 PCICU201 5185963A27 LVFRAU210 5102463J61 InvertU211 5102463J61 InvertU241 5105750U54 VCO BU247 5105739X05 5V ReU248 5102463J58 3.3V R

SOT2U301 5109632D83 LVZIFU400 5102463J40 3.3V RU404 5185963A53 Asfic_U406 *5102463J59 128KU407 *5102463J64 16K XU409 5102226J56 MicropU410 5102463J57 3.3V R

GP32

CircuitRef

MotorolaPart No.

Page 88: Motorola Gp328 338 Service Manual

6A-26 Circuit Board/Schematic Diagrams and Parts List

8.0

C381

10

C397

04

Q315

R300

R316

318

R319R325

R334

335

338

RT300

T301

VR300

PB501

C521VR440

C362

C364

C351

C349C350

C352C353

C354

C363

C384

C385

CR310

L325

L332

Q320

R355

R322

R345

R320

R321

R324

R346

SH321

C396

C333

R317

R336C331

CR308

R342

SH301

C304

C308

C302

C301

C303

C305

CR301

CR302

L301

L302

R301

R302

C505

C502

Q505

R506

R507

VR501

C511

C512 C513

C514

C520

CR5032

3 4

Q502

R505

R502

R501

VR443

VR

3

2

Q110

1

C109

9

171

C111

C113

L106

4

R120

173

175

176

C101

C141

C102

C104C103

C106

C107

C175

CR101

CR102

L101L102

L104

L105

SH100

C140L116

PB505

ZMY0130183-B

UHF (4

http

://w

ww.m

yrad

io16

8.na

me

Circuit Board/Schematic Diagrams and Parts List

J400

1

E409

U405

17

8 21

22

C426 C425

E407R437

R410

40

C42

3

E40

8

R41

8

8

5 4

1

U407

C427 C428

U406

116

1732

C429

C424R408

R492

R429

R478

R428

C432

SH400

C404

C443

R435

TP401

TP402

FL201

1 3

46

PB502PB503

B503

TP201

SH201

B504

C325

C324C323

FL301

R351

L311

R352

SH323

C210

C211

C212C213

C214

C220

C230

C257

C260

C294

C292

C229

C203

C217

C23

5

C228

C233

C238

C297

C29

1

CR201

L201 L202

L203

L232

Q210

3

4

Q26034

R256

R255

U247

C375 C320C319

C322

L309

L3R309

R308

R310

R348

SH303

T301

3 4

6

T302

34

6

TP202

TP302

C328

C391

PB5

Q316

R326

R314

RR327

R

R

R

VR444

C441

C444

C471C472

C473

C490

C491

C492

C493

C494

C495

C496

C497

21

1

J403

20

22

L401

Q41734

R477

R450

RT400

TP410

VR447 VR449

CR413

L400

R421

TP405 TP406 TP415

VR434450

C401

C402

C40

0

C40

6

C467

C482

C403

C480

CR412

CR440

Q40

0

Q403

Q405

3

4

R401R402

R40

3

R405

R454

R45

5

R45

6

R416

R448R447

R452

R40

6

R407

R427

R476

R481

R451

R453

SH401

U400

85

4

3

L253

1

3

L243

1

C247C251

C285

C289

C370

C374

C386

C248 C273

C286

C276

C253

C271C272

L282

L273

L271

L321

Q26134

Q241

R333

R339

R243

R248

R253

R260

SH241

U101

9

8

16

1

C121

C160

L160

R108

C11

0

C11

4

C118 C11

C12

2

C12

5

C16

5

C166

C

C112

C115

C117

C116

C120

C161

C127

C131C12

9

C16

9 L114

L115

L107

L108

L109

L113

R103

R104

R106R107

R17

R171

R161

R

R

R

SH101

03-470MHz) Main Board Top Side PCB No. 8480450Z13

Page 89: Motorola Gp328 338 Service Manual

Circu 6A-27

C279

C523

441

VR442

SH202

C204

13

25

U201

C264

C29

8

C20

2

C263

C218

C206C207

C208

C265

CR203

R204

R281

C296

C258C259

U2103 4

U211

3

4

C224

C281

C372 C371

C37349

Q310

R330

R332

R245

R331

H242

U241

10

201

11

C255C252C254

CR251

L251

R251

R252

R254

M400

CR411

C431

C434

C435

C433

C436C437

3

FL401

Q416

R463

R462R419

R414

R415

R420R426

R460

R461

SH

402

51

76

U410

U409

26

1

C449

C453

C456

C458

C459

C463

C466

C524

C525

C526

C527

C528

C529

E400

E401E402

E403

E404

E405

E406

L410

L411

R409

R411 R457

R432

SH403

M401

C40

5

C408

C409

C41

1

C414

C450C451

C415

C410

C430C476

C440

C452Q410

3

4

R436

R471

R43

4

131

U404 U420

101

VR460

2537

20 11

R498

C422

C42

0

C41

9

C407

C416

C42

1

C44

7C

448

C479

C481 C475

R400

R41

3

R475

R499

R42

3

R425

R424

R431

R445

R449

R472

C445

C442

R473

VR432

VR433

VR445

VR446

VR448

UHF (403-470MHz) Main Board Bottom Side PCB No. 8480450Z13

http

://w

ww.m

yrad

io16

8.na

me

it Board/Schematic Diagrams and Parts List

S5022

3 5

4

C357C358

C359

C383

C390

C346

R344

C343

C33

9

C34

0

C34

1

C34

2

C345 C334

M301

SH322

1325

37 1

U301

C347 C348C356 C337

C329 C336

C344

C360

C355

C361

C382

L314

L331

R343

R350

C327

C330

C326

C338

L330

Q302

R315

R313

R311

R312

M101

3

2

1

B501U248C277

C522

C278

L505VR

VR506

L261

C234

37

1

C201

C223

C23

1

C219

C232

C293

R201

R202

R231

R23

2

R23

3

1

2

S501 C

8

C

4Q301

C309

C315

C321

C395

C313

C30

7

C310C314

C318

C380C306

C311

C316

C317C312

CR304 CR305

CR303 L340

L306 L307

L303

L305L304

R30

6

R30

7

R30

4

R303

R347

R305

R34

0R

328

SH302

1

J101

4

3

2

J102

P100

M100

Q111

3

4

CR160

CR103

C108

R101

R170

C132

C173

C172

CR105

H101

R133

R172

C105

C130

C138 C151

C170

C174

C126

C133

C128

C13

5

C150C152

C13

4

L112

R109

R132

R13

6

25

917

U102

1

R102

C123E101

R130

R131

VR439

CR306

R329

SH304

C503

CR501

F501

CR241

C241

C246

C295

C242C243

C250

C244

C245

C378

CR242

CR243

R3

L241

L281L242

R110

R112 R111

R242R241

R244

S

M300

ZMY0130182-B

Page 90: Motorola Gp328 338 Service Manual

6A-28 Circuit Board/Schematic Diagrams and Parts List

05

1TCH

D

L505390nH

VR5066.8V

RADIO_CODE

BATT-

BATT+DATA

1 NEG3 POS

CONN_J

B5012

BATTERY_CONTACT

0015-C

UHF C

http

://w

ww.m

yrad

io16

8.na

me

B504

if B503LI_ION

VR5016.8V

0.47uFC502

C505100pF

SWITCHS502

4

1

LOW

5

HIG

H

36

TAB1

7TAB2

2

R5070

MECH_SWB+

Vdda

VOL

P100

M100

M101

VR4416.8V

6.8VVR442

PB503SWITCH

12

.01uFC522

VR4446.8V

12SWITCHPB501

2

PB502SWITCH

1

6.8VVR440

.01uFC521

2SWITCHPB504

1

.01uFC523

EMERPTT

SB2

SB3

SB1

PB5

2SWI

C520.01uF 6.8V

VR443

Vdda

4

3

2R50647K

51

6

IMX1

Q505

10KR505

R502180680

R501

GREEN_LE

SWB+

RED_LED

Q502

31

2 4

CR503

CR5011

210VVR439

100pFC503

24VF501

21

BATT_CODEUNSWB+

TAB11 TAB22TAB3 3TAB4 4TAB5 5

RF_JACK

ANTENNA_NUTJ102

C140

9.75nHL116

1

2

3

J101RF_JACK

4GND

K2K3

A1A2A3

K1

CR160

C141

NU

NU

RTA0

RTA1

RTA2

RTA3

C514100pF100pF

C512C511 C513100pF 100pF

SWITCHS501

C1GND GND1

PC01PC12PC2 PC3C0C0

C1DUMMY

7 9

4 8

ZMY013

ontrols And Switches Schematic Diagram

Page 91: Motorola Gp328 338 Service Manual

Circu 6A-29

R

RSSI

RX_INJ

50.1uFC391

R3388.2K

2 1

R335

RT30133.0K

R5

NU

R331C371 C372R330NUNUNUNU

R332

100pFC370

R5

NU

100pFC374L321

0R339

R333

if

0R349

Q31013

2

C378100pFC386

C373NUNU

NUNU

NU

TP302

C3207.5pF

VCOBUF

C375100pF1.8pF

C319

3.6KR348 L309

16.28nH

9.1pFC381

T302XFMR

46

31 2

9.1pFC317

C3187.5pF 0

R329

1

2

XFMRT301

4

6

3

C32282pF

2

34

1

CR306

R30918

L310150nH

270R308

270R310

IF

ZMY0130016-F

UHF Receiver Front End Schematic Diagram

http

://w

ww.m

yrad

io16

8.na

me

it Board/Schematic Diagrams and Parts List

X_IN3.6pFC301

3.9pFC303

R301100K

CR301

13.9nHL30213.9nH

L301C30210pF

C3049.1pF

100pFC308

CR302

C30520pF

CR303

2

3

1

R302100K C307

0.1uF

R3406.8K

L30322nH

R5

SH304SHIELD

1

1

SHIELDSH302

1

SHIELDSH301 SH303

SHIELD

1

M300

RXFE Top Shield RXFE Bottom Shield Mixer Shield

RX Mixer Diod Shield

R305510

100pFC309

3

2

Q3011

R3031K

100pFC321

12KR304

0.1uFC310

R328

0.1uFC314

L304180nH C306

6.8pFC312

22nHL305

100pFC315

R5

NU

2.7

C31110pFC313 L306

13.9nHNU

100pFC395

R3171K390nH

L340 HSMP3820

2

31

CR308

1KR347

100pFC331

18KR318

C333

R336

13

2

Q315

3

150R319

91KR316

33KR327

C396NU

NU

NUR5

RT30033.0K

2.2KR300

C3971uF

VR300

2

Q316

1

2

R326 R334

NU

NU

NU

NU

1

6.8KR32

R307100K

100KR306

CR304 CR305

.01uFC380

13.9nHL307

100KR342

C3163.9pF

DACRx

Page 92: Motorola Gp328 338 Service Manual

6A-30 Circuit Board/Schematic Diagrams and Parts List

1

SH322SHIELD

1

SH321SHIELD

VZIF TOP SHIELD LVZIF BTM SHEILD

1KR320

56pFC385

L3252.20uH

C38456pF

CR310

10KR345

C35343pF R346

56K

100nHL332

C35447pF

C364.01uF

R322200K

C362.022uF

2KR324

R3212.4K

C3632.2uF

.022uFC349

20pFC351

C350330pF

12pFC352

BFQ67WQ320

13

2

0R355

DEMOD

DB

100KR350

100pFC390

C383100pF

Vdd_FILTERED

IF

M301

Hz

ZMY0130014-E

UHF R

http

://w

ww.m

yrad

io16

8.na

me

SH323SHIELD

1

CRYSTAL FILTER SHEILD L

12KR344

C3450.1uF0.1uF

C346

0.22uFC357

1200pFC358

0.1uFC347

0.1uFC344

0.1uFC329

10uFC382

2.20uHL331

C3480.1uF

10R343

VddaVdd_FILTERED

(SOURCE)

C3430.22uF

C3411uF

1uFC342

C3391uF

C3401uF

C337100pF

L3142.2uH

C3360.1uF

Vdd_FILTERED .022uFC356

3KR314

R5 0.33uFC355

15pFC338

C3280.1uF

R313330

C326.01uF

C360.022uF

DA

RSSI

XTALFL301

680nHL330

30KR311

C325.01uF

C33010pF

C327100pF

Q302

3.3KR352

R31512K

2.4KR312R351

0 C361.01uF

L311750nH

C323150pF

20pFC324

GN

D2

4G

ND

35

OUT 3IN6

GN

D1

GN

D1

2

.022uFC334

0.1uFC359

CLKDATA

LVZIF_SEL

16.8M

954 8

4748

31 2 10

41

4342

46

116

393837

7 12

4544

40

16

24

20

1415

13

17

21

1918

2223

30 2932 252631 28 27343536 33

U30132D83

RO

SE

_VS

S

RS

SI_

FLT

RS

SI_

OU

T

TESTA

TE

ST

D

VA

G

VA

G_R

EF

VP

P

MIX_IN

MLPD_CR

PH

AS

E_L

OC

K

PREAMP_OUTPRE_AGC

PR

E_I

N

RE

D_V

CC

RE

D_V

SS

RO

SE

_VC

C

GO

LD_V

CC

GOLD_VSS

GREEN_VCC

GREEN_VSS

IOUT

LIM

MIX_BYP

COL

DATA

DE

MO

D_H

FD

EM

OD

_OU

T

EM

IT

EX

TB

S

FREFGND

C2M

C2P

C3M

C3P

C4M

C4P

CEXCLK

AF

C

BA

SE

BLUE_VCCBLUE_VSS

BROWN_VCCBRP_OFF

C1M

C1P

eceiver Back End Schematic Diagram

Page 93: Motorola Gp328 338 Service Manual

Circu 6A-31

SWB+

pF4 C293

0.47uF

Vdda

100pFC277 C278

10uF

MODOUT

C2792.2uF

NC

4

3

ON

_OF

F*

VIN

1

VO

UT

5

U248LP2980

GND2

R2554.3K

08 SHIELDSH201

C238470pF

L23212uH

R5

C2310.1uF

560R233

R232620

VCTRL

C232.047uF0.47uF

C234TP202

1

R23112030

R256

C2330.1uF

4V_3.3V

if

SHIELDSH202

11

SYNTHESIZER TOP SHIELD SYNTHESIZER BOTTOM SHIELD

ZMY0130017-F

UHF Synthesizer Schematic Diagram

http

://w

ww.m

yrad

io16

8.na

me

it Board/Schematic Diagrams and Parts List

.01uFC258

3 GND

2

1NC

4

5VCC

TC7ST04FUU210

C259.01uF

2 K2

3 K3

CR201

A1 6A2 5A3 4

K11C2291000pF

C2284.7uF

C230100pF

0.1uFC296

2

1NC

4

5VCC

TC7ST04FUU211

3 GND

C265 C257100pFNU

6ERR

1G

ND

5IN

2NR4OUT 3

SD

ADP3300U247

C29110uF

0.1uFC298

L2022.2uH

C2190.22uF

C2920.1uF

5V(SOURCE)

C2230.1uF 2.2uF

C235

C2240.1uF

C2172.2uF 0.1uF

C218

16.8MHz

C2042.2uF

XTAL123

XTAL224

VBPASS21

VC

P47

VMULT1 15

VMULT2 1412VMULT3

VMULT4 11

VR

O13

25WARP

PVREF35

REFSEL18

SFBASE27 SFCAP26

SFIN30

SFOUT 28

TEST1 37

TEST2 38

NC117

NC229

NC331

PD

_GN

D44

PD

_VD

D5

PREIN32

PR

E_G

ND

33P

RE

_VD

D34

DV

DD

36

FREFOUT 19

IADAPT 45

INDMULT 16

IOUT 43

LOCK 4

MODIN10

MODOUT 41

AV

DD

20

BIAS140

BIAS239

42 CCOMP

CEX9 CLK8

DATA7

DG

ND

6

ADAPTSW 46

AG

ND

22

AUX1 48

AUX2 1

AUX3 2

AUX4 3LVFractN IC

U201

82KR201100pF

C211

0.75pFC263

C264100pF

100KR202

100pFC214

DATA

AUX3AUX4

39nHL261

TP2011

100pFC212C210

100pF

CSXCLK

MODIN

PRESC

VSF

C201100pF

C2034.7uF

C2021000pF

100C29

L2032.2uH

100pFC220

L2012.2uH

100pFC260 2

4

1

3

Q210

4.7K

47K

47K

10K

39pFC207

R281

GN

D1

GN

D1

4

OUT 3IN6

FL201

75Z04

16.8MHz

330pFC206

NU

100pFC213

C2CR203

47KR204

LOCK

NU

5V

Page 94: Motorola Gp328 338 Service Manual

6A-32 Circuit Board/Schematic Diagrams and Parts List

RX

TX

1

2

3

L243ONATOR

C2442pF

Rx_sw

VSF

7.5pFC250

7.5pFC242

7.5pFC243

1 2

CR241

220nHL242

CR243

390nHL241

C241100pF

CR242

VCTRL

A1 A2C247100pF

C2480.1uF

10pFC252

33nHL251

CR251C2531.5pF 100pF

C251

ZMY0130019-E

UHF V

http

://w

ww.m

yrad

io16

8.na

me

_INJ

_INJ

L281390nH

C281100pF R245

240

L27333nH

C272NU

68nHL271

0.1uFC273

C276

ifind

2.2uFC2860.1uF

VSF

SHIELDSH242

1

SHIELDSH241

1

VCO TOP SHIELD VCO BOTTOM SHIELD

C271PRESC

NU Rx_swTx_sw

10

13

12

8

7

VC

C_L

OG

IC

18

SUPER_FLTR 3

TRB_IN 19

TX_BASE 16

TX_EMITTER 15

TX_IADJ 1TX_OUT

TX_SWITCH

VC

C_B

UF

FE

RS

14

GN

D_F

LAG

917

GN

D_L

OG

IC

PRESC_OUTRX_BASE 5

RX_EMITTER 6

RX_IADJ 2RX_OUT

RX_SWITCH

U24150U54

COLL_RFIN 4

FLIP_IN 20

GN

D_B

UF

FE

RS

11

R242200

R24310K

RES

R24412K

C2452.4pF

C285100pF

100pFC246 R241

18

1

2

Q241BFQ67W

L282390nH

3

30R248

7.5KR253

7.5KR254

Tx_sw

3.6pFC254

C289100pF

AUX4

330R252

100pFC255 L253

RESONATOR

18R251

1P1

P22

P3 3

3

Q261

2

4

147K

47K

4.7K

10K

R2601K

DD

Q260

2

4

1

3

.01uFC297

AUX3

5V

10K

47K

4.7K

47K

oltage Controlled Oscillator Schematic Diagram

Page 95: Motorola Gp328 338 Service Manual

Circuit Board/Schematic Diagrams and Parts List 6A-33

1

SHIELDSH100

HF SHIELD

ANT_BIAS

100pF L105C108

390nH

TX_OUT

CR101

19.61nHL104

C1064.7pF6.2pF

C104

19.61nHL102L101

19.61nH

10pFC103

6.2pFC102

100pFC101

RF_JACK

RX_IN

http

://w

ww.m

yrad

io16

8.na

me

C1073.3pF

3

1CR102

2

240R170

240R101

20pFC175

ZMY0130486-A

UHF Harmonic Filter Schematic Diagram

Page 96: Motorola Gp328 338 Service Manual

6A-34 Circuit Board/Schematic Diagrams and Parts List

TX_BIAS

ANT_BIAS UNSWB+

DATA

SWB+

UNSWB+

CSX

CLK

RESET

5V

.022uFC128

23

0K32

1CR103

2

3

2

6

4

1

3Q111

10K

47K

4.7K

47K C132

100pF

NU

100pFC174

C122100pF

C105100pF

R133

F

C138100pF 0.1uF

C126

C170100pF

C110100pF

CR105

GND3

1P

OS

2VOUT

LM50

10KR130

.022uFC173

R13118K

VG

15

VL6 VLIM 19

T12 TE

MP

30

V10

14

V45

16

17V5EXT

20VAR1

18VAR2

24VAR3

INT422NA

Q11

QX

10

1 RFIN

RS 21

31R

SE

T

RX 23

CL7

CLK

26

CQ

12C

QX

13D

AT

A28

F16

89

GND18

GN

D2

25

U102H99S

AN

O32

BP

OS

27C

EX

29

CI3

CJ5

UHF Tr

http

://w

ww.m

yrad

io16

8.na

me

X_OUT

TX_INJ_1

UN

UNSWB+

UNSWB+

TX_INJ

C12310uF

BEADE101

R1020.075

L10733.47nH

Microstrip Microstrip

C11111pF

100pFC109

C11247pF

L1067.66nH

C11310pF

1

2

3

Q110

6.2R176

6.2R175

Microstrip

33pFC116

30pFC115

0.1uFC172

R10343

200R172

4.22nHL108

10R106

30pFC117

100pFC118

L1090

C114100pF

NU

NU

100pFC160

.022uFC152

100pFC130

R107

R1085.6K

L16015.0nH

C151100pF .022uF

C150

C121100pF 22nH

L112

C120

C1610.1uF

200R161

7R

FO

UT

21

VC

NT

RL

14V

D1

2V

G1

3V

G2

1GND3 1GND4

8N

C1

9N

C2

10N

C3

15N

C4

16R

FIN

6R

FO

UT

1

U101C65

11G

2 4GND1 5GND2

C125100pF

27R1

.022uFC131

390nHL114

C1271000pF 5.6pF

C169

100pFC165

5.6nHL113

C166100pF

7.5pFC129

PA SHIELD

POS1HEATSINK

H101

1

SHIELDSH101

NUR174

R12043K

100pFC119

300R112if

20R111

R10447K

C295100pF

R110300

43KR171

100pFC171

180KR173

R1361MEG

L115390nH

C1343300pF

200KR109

1000pFC133

.022uC135

ZMY0130018-F

ansmitter Schematic Diagram

Page 97: Motorola Gp328 338 Service Manual

Circu 6A-35

UHF

CircR

B501B503

B504

C101C102C103C104C105C106C107C108C109C110C111C112C113C114C115C116C117C118C119C120

C121C122C123C125C126C127C128C129C130C131C132C133C134C135C138C140C141C150C151C152C160C161C165

pF

F

0pF

0pF

0pFuF

0pFpF0pF

0pF

0pF

0pF

pFpF

Description

C328 2113743M24 100000pFC329 2113743M24 100000pFC330 2113743N26 10pFC331 2113743N50 100pFC333 NOT PLACEDC334 2113743M08 22000pFC336 2113743M24 100000pFC337 2113743N50 100pFC338 2113743N30 15pFC339 2180478Z20 1uFC340 2180478Z20 1uFC341 2180478Z20 1uFC342 2180478Z20 1uFC343 2113743A23 0.220uFC344 2113743M24 100000pFC345 2113743M24 100000pFC346 2113743M24 100000pFC347 2113743M24 100000pFC348 2113743M24 100000pFC349 2113743E07 0.022uFC350 2113743L05 330pFC351 2113743N33 20pFC352 2113743N28 12pFC353 2113743N41 43pFC354 2113743N42 47pFC355 2113743A24 0.330uFC356 2113743M08 22000pFC357 2113743A23 0.220uFC358 2113741A23 1200pFC359 2109720D14 0.1uFC360 2113743E07 0.022uFC361 2113741F49 10nFC362 2113743M08 22000pFC363 2311049A40 2.2uFC364 2113743L41 10000pFC370 2113743N50 100pFC371 NOT PLACEDC372 NOT PLACEDC373 NOT PLACEDC374 2113743N50 100pFC375 2113743N50 100pFC378 NOT PLACEDC380 2113743L41 10000pFC381 2113743N21 6.2pFC382 2311049A59 10uFC383 2113743N50 100pFC384 2113743N44 56pFC385 2113743N44 56pFC386 2113743N50 100pFC390 2113743N50 100pFC391 NOT PLACED

CircuitRef

MotorolaPart No. Description

http

://w

ww.m

yrad

io16

8.na

me

it Board/Schematic Diagrams and Parts List

Radio Parts List

uitef

MotorolaPart No. Description

0986237A02 Battery Contact Module3980502Z01 Backup battery B+ (not placed

in GP328)3980501Z01 Backup battery B- (not placed

in GP328)2113740F51 100pF2113740F22 6.2pF2113740F27 10pF2113740F22 6.2pF2113743N50 100pF2113740F19 4.7pF2113740F15 3.3pF2113743N50 100pF2113740F51 100pF2113743N50 100pF2113740F30 13pF2180605Z32 47pF2180605Z16 10pF2113743N50 100pF2113743N30 15pF2113743N38 33pF2113743N37 30pF2113743N50 100pF2113743N50 100pFNOT PLACED GCAM DUMMY PART NUM-

BER2113743N50 100pF2113743N50 100pF2311049A18 10uF2113743N50 100pF2113743M24 100000pF2113743L17 1000pF2113743M08 22000pF2113743N23 7.5pF2113743N50 100pF2113743M08 22000pF2113743N50 100pF2113743L17 1000pF2113743L29 3300pF2113743M08 22000pF2113743N50 100pFNOT PLACEDNOT PLACED2113743M08 22000pF2113743N50 100pF2113743M08 22000pF2113743N50 100pF2113743M24 100000pF2113743N50 100pF

C166 2113743N50 100pFC169 2113743N20 5.6 pFC170 2113743N50 100pFC171 2113743N50 100pFC172 2113740F51 100pFC173 2113743M08 22000pFC174 2113743N50 100pFC175 2113740L25 20pFC201 2113743N50 100pFC202 2113743L17 1000pFC203 2311049A56 4.7uFC204 2104993J02 2.2uFC206 2113740F63 330pFC207 2113743N40 39pFC208 NOT PLACEDC210 2113743N50 100pFC211 2113743N50 100pFC212 2113743N50 100pFC213 2113743N50 100pFC214 2113743N50 100pFC217 2104993J02 2.2uFC218 2113743M24 100000pFC219 2113743K16 0.220uFC220 2113743N50 100pFC223 2113743M24 100000pFC224 2113743M24 100000pFC228 2311049J11 4.7uFC229 2113743L17 1000pFC230 2113743N50 100pFC231 2113743M24 100000pFC232 2113743E12 0.047uFC233 2311049A01 0.1uFC234 2311049A05 0.47uFC235 2104993J02 2.2uFC238 2113741F17 470pFC241 2113743N50 100pFC242 2113743N23 7.5pFC243 2113743N23 7.5pFC244 2113740F10 2.0pFC245 2113743N11 2.4pFC246 2113743N50 100pFC247 2113743N50 100pFC248 2113743M24 100000pFC250 2113743N23 7.5pFC251 2113743N50 100pFC252 2113743N26 10pFC253 2113740F09 1.8pFC254 2113743N15 3.6pFC255 2113743N50 100pFC257 2113743N50 100pFC258 2113743L41 10000pF

CircuitRef

MotorolaPart No. Description

C259 2113743L41 10000C260 2113743N50 100pFC263 2113743N02 0.75pC264 2113743N50 100pFC265 NOT PLACEDC271 NOT PLACEDC272 NOT PLACEDC273 2113743M24 10000C276 2104993J02 2.2uFC277 2113743N50 100pFC278 2311049A57 10uFC279 2104993J02 2.2uFC281 2113743N50 100pFC285 2113743N50 100pFC286 2113743M24 10000C289 2113743N50 100pFC291 2311049A69 10uFC292 2113743M24 10000C293 2113743A27 0.470C294 2113743N50 100pFC295 2113743N50 100pFC296 2113743M24 10000C297 2113743L41 10000C298 2113743M24 10000C301 2113743N15 3.6pFC302 2113743N26 10pFC303 2113740L08 3.9pFC304 2113743N26 10pFC305 2113743N33 20pFC306 NOT PLACEDC307 2113743M24 10000C308 2113743N50 100pFC309 2113743N50 100pFC310 2113743M24 10000C311 NOT PLACEDC312 2113743N25 9.1pFC313 2113743N26 10pFC314 2113743M24 10000C315 2113743N50 100pFC316 2113740L08 3.9pFC317 2113743N25 9.1pFC318 2113743N23 7.5pFC319 2113743N69 1.8pFC320 2113743N23 7.5pFC321 2113743N50 100pFC322 2113743N48 82pFC323 2113743N54 150pFC324 2113743N33 20pFC325 2113743L41 10000C326 2113743L41 10000C327 2113743N50 100pF

CircuitRef

MotorolaPart No.

Page 98: Motorola Gp328 338 Service Manual

6A-36 Circuit Board/Schematic Diagrams and Parts List

C395C396C397C400C401C402C403C404C405C406C407C408C409C410C411C414C415C416C419C420C421C422C423C424C425C426C427C428C429C430C431C432C433C434C435C436C437C440C441C442C443C444C445C447C448C449C450C451C452C453C456

CircuiRef

mon anode-cathode

ad diode (SOT-143)

hottkyhottkyhottkymon cathode diode

/Yelloweadeadeadeadeadeadeadeadeadeadead

Xtal oscillatorr 45.1MHzillator 38.4kHz (not

GP328)eader

nutnnectornnector

escription

L203 2462587Q20 2200nHL232 2462587P25 12000nHL241 2462587V41 390nHL242 2462587V38 220nHL243 2460593C01 Multi-layered Teflon resona-

tor, RxL251 2462587V28 33nHL253 2460593C02 Multi-layered Teflon resona-

tor, TxL261 2462587V29 39nHL271 2462587V32 68nHL273 2462587V28 33nHL281 2462587V41 390nHL282 2462587V41 390nHL301 2479990C01 13.9nHL302 2479990C01 13.9nHL303 2462587V26 22nHL304 2462587V37 180nHL305 2462587V26 22nHL306 2479990C01 13.9nHL307 2479990C01 13.9nHL309 2479990C02 16.28nHL310 2462587V36 150nHL311 2462587N65 750nHL314 2462587N72 2200nHL321 NOT PLACEDL325 2480646Z20 2.2uHL330 2462587N64 680nHL331 2480646Z20 2.2uHL332 2462587N53 100nHL340 2462587V41 390nHL400 2462587Q42 390nHL401 2462587Q42 390nHL410 2462587Q42 390nHL411 2462587Q42 390nHL505 2462587Q42 390nHP100 3905643V01 Ground contact fingerPB501 4080523Z01 Tactile switch, pushbuttonPB502 4080523Z01 Tactile switch, pushbuttonPB503 4080523Z01 Tactile switch, pushbuttonPB504 4080523Z01 Tactile switch, pushbuttonPB505 4080523Z01 Tactile switch, pushbuttonQ110 4813828A09 RF PAQ111 4802245J50 Dual NPN/PNP transistorQ210 4802245J50 Dual NPN/PNP transistorQ241 4805218N63 RF NPN transistorQ260 4802245J50 Dual NPN/PNP transistorQ261 4802245J50 Dual NPN/PNP transistorQ301 4802245J44 NPN TransistorQ302 4802245J44 NPN TransistorQ310 NOT PLACED

CircuitRef

MotorolaPart No. Description

http

://w

ww.m

yrad

io16

8.na

me

2113743N50 100pFNOT PLACED2311049A05 0.47uF2113743L41 10000pF2113743M24 100000pF2113743M24 100000pF2113743G24 2.2uFNOT PLACEDNOT PLACEDNOT PLACED2113928N01 0.1uF2113743N50 100pF2113743M24 100000pF2113928N01 0.1uF2113743M24 100000pF2113743M24 100000pF2185895Z01 0.01uF2113928N01 0.1uFNOT PLACED2113743L41 10000pF2113928N01 0.1uF2113743M24 100000pF2113743N50 100pF2311049A59 10uF2113743M24 100000pF2113743N50 100pF2113743N50 100pF2113743M24 100000pF2113743M24 100000pF2113928N01 0.1uF2113743N50 100pFNOT PLACED2113743L41 10000pF2113928N01 0.1uF (not placed in GP328)2113743M24 100000pF2113743N34 22pF (not placed in GP328)2113743N34 22pF (not placed in GP328)2113743G26 4.7F2113743N50 100pF2113743E20 0.10uF2113928N01 0.1uF2113743N50 100pF2113743N50 100pF2113743M08 22000pF2113928N01 0.1uF2113743N50 100pFNOT PLACED2113743M08 22000pF2113743B29 1uF2113743N50 100pF2113743N50 100pF

t MotorolaPart No. Description

C458 2113743N50 100pFC459 2113743N50 100pFC463 2113743N50 100pFC466 2113743N50 100pFC467 2113928N01 0.1uFC471 2113743N50 100pFC472 2113743L09 470pFC473 2113743L09 470pFC475 2113743H14 10uFC476 2113928D08 10uFC479 2113928N01 0.1uFC480 2113928D08 10uFC481 2113928N01 0.1uFC482 2113928N01 0.1uFC490 2113743N50 100pFC491 2113743N50 100pFC492 2113743N50 100pFC493 2113743N50 100pFC494 2113743N50 100pFC495 2113743N50 100pFC496 2113743N50 100pFC497 2113743N50 100pFC502 2311049A05 0.47uFC503 2113743N50 100pFC505 2113743N50 100pFC511 2113743N50 100pFC512 2113743N50 100pFC513 2113743N50 100pFC514 2113743N50 100pFC520 2113743L41 10000pFC521 2113743L41 10000pFC522 2113743L41 10000pFC523 2113743L41 10000pFC524 2113743N50 100pFC525 2113743N50 100pFC526 2113743N50 100pFC527 2113743N50 100pFC528 2113743N50 100pFC529 2113743N50 100pFCR101 4880973Z02 Pin diodeCR102 4802245J41 Pin diodeCR103 4802245J41 Pin diodeCR105 5185963A15 Temperature sensorCR160 NOT PLACEDCR201 4802233J09 Triple diode (SOT 25)CR203 4862824C03 VaractorCR241 4805649Q13 VaractorCR242 4862824C08 VaractorCR243 4862824C08 VaractorCR251 4802245J22 VaractorCR301 4862824C08 Varactor

CircuitRef

MotorolaPart No. Description

CR302 4862824C08 VaractorCR303 4880154K03 Dual com

diodeCR304 4862824C08 VaractorCR305 4862824C08 VaractorCR306 4802245J42 Ring QuCR308 4802245J41 Pin diodeCR310 4862824C08 VaractorCR411 4802245J62 Diode ScCR412 4802245J62 Diode ScCR413 4802245J62 Diode ScCR440 4813833C02 Dual comCR501 4880107R01 RectifierCR503 4805729G49 LED RedE101 2484657R01 Ferrite bE400 2480640Z01 Ferrite bE401 2480640Z01 Ferrite bE402 2480640Z01 Ferrite bE403 2480640Z01 Ferrite bE404 2480640Z01 Ferrite bE405 2480640Z01 Ferrite bE406 2480640Z01 Ferrite bE407 2480640Z01 Ferrite bE408 2480640Z01 Ferrite bE409 2480640Z01 Ferrite bF501 6580542Z01 3A fuseFL201 4805875Z04 16.8MHzFL301 4802245J43 Xtal FilteFL401 4870368G02 Xtal Osc

placed inH101 2680499Z01 Heat sprJ101 0985613Z01 RF JackJ102 0280519Z02 AntennaJ400 0905505Y04 40-pin coJ403 0905505Y02 20-pin coL101 2479990B02 19.61nHL102 2479990B02 19.61nHL104 2479990B02 19.61nHL105 2462587N22 390nHL106 2479990A02 7.66nHL107 2479990G01 33.47nHL108 2479990A01 4.22nHL109 0662057C01 0L112 2462587N45 22nHL113 2413926H09 5.6nHL114 2462587N45 22nHL115 2462587N22 390nHL116 2479990A03 9.75nHL160 2413926H14 15nHL201 2462587Q20 2200nHL202 2462587Q20 2200nH

CircuitRef

MotorolaPart No. D

Page 99: Motorola Gp328 338 Service Manual

Circu 6A-37

Q31Q31Q32Q40Q40Q40Q41Q41

Q41Q50Q50R101R102R103R104R106R107R108R109R110R111R112R120R130R131R132R133R136R161R170R171R172R173R174R175R176R201R202R204R231R232R233R241R242R243R244R245R248R251R252

CircR

not placed in GP328)

not placed in GP328)

ms, 1W

ot placed in GP328)

Description

R462 0662057M98 10k (not placed in GP328)R463 0662057M61 300R471 0662057N06 20kR472 0662057N12 36kR473 0662057M26 10R475 0662057M01 0R476 0662057N35 330kR477 0662057M74 1000R478 0662057M98 10kR481 0662057N08 24kR492 0662057M01 0R498 0662057M98 10kR499 0662057M98 10k (not placed in GP328)R501 0662057M70 680R502 0662057M56 180R505 0662057M98 10kR506 0662057N15 47kR507 0662057M01 0RT300 0680590Z01 THERMISTOR_33KRT301 NOT PLACEDRT400 0680590Z01 THERMISTOR_33KS501 4080710Z01 Frequency switchS502 1880619Z02 Volume/on-off switchSH100 2680507Z01 Harmonic Filter shieldSH101 2680510Z01 RF PA shieldSH201 2680511Z01 Synthesizer top shieldSH202 2680511Z01 Synthesizer bottom shieldSH241 2680513Z01 Resonators shieldSH242 2680514Z01 VCO Buffer IC shieldSH301 2680554Z01 Receiver front end shieldSH302 2680555Z01 Receiver front end bottom

shieldSH303 2680509Z01 Mixer shieldSH304 2680624Z01 Mixer diode shieldSH321 2680508Z01 LVZIF 2nd LO shieldSH322 2680514Z01 LVZIF shieldSH323 2680553Z01 Crystal Filter shieldSH400 2680505Z01 Controller Memory ShieldSH401 2680506Z01 Controller on-off shieldSH402 2680515Z01 Microprocessor shieldSH403 2680516Z01 Asfic_Cmp/Audio PA shieldT301 2580541Z01 Balun transformerT302 2580541Z01 Balun transformerU101 5185130C65 VHF/UHF/800 MHZ LDMOS

DRIVERU102 5185765B28 PCICU201 5185963A27 LVFRACN Synthesizer ICU210 5102463J61 InverterU211 5102463J61 InverterU241 5105750U54 VCO BUFFER ICU247 5105739X05 SOT 5V Regulator

CircuitRef

MotorolaPart No. Description

http

://w

ww.m

yrad

io16

8.na

me

it Board/Schematic Diagrams and Parts List

5 4880214G02 NPN6 NOT PLACED0 4805218N63 RF NPN transistor0 4809579E18 Mosfet P - channel3 4813824A17 Bipolar Transistor, PNP5 4802245J54 Dual NPN Transistor0 4802245J54 Dual NPN Transistor6 4809579E18 Mosfet P - channel (not placed

in GP328)7 4802245J50 Dual NPN/PNP transistor2 5180159R01 DUAL TRANS NPNS5 4880214G02 NPN

0662057A34 2400680539Z01 0.10662057M41 430662057N15 47k0662057M26 10NOT PLACED0662057M92 56000662057N30 200k0662057M61 3000662057M33 200662057M61 3000662057N14 43k0662057M98 10k0662057N05 18k0662057N33 270kNOT PLACED0662057N47 1M0662057M57 2000662057A34 2400662057N14 43k0662057A32 2000662057N29 180k0662057N15 47k0662057B67 6.20662057B67 6.20662057N21 82k0662057N23 100k0662057N15 47k0662057M52 1200662057M69 6200662057M68 5600662057M32 180662057M57 2000662057M98 10k0662057N01 12k0662057M59 2400662057M37 300662057M32 180662057M62 330

uitef

MotorolaPart No. Description

R253 0662057M95 7500R254 0662057M95 7500R255 0662057M89 4300R256 0662057M37 30R260 0662057M74 1000R281 NOT PLACEDR300 0662057M82 2200R301 0662057N23 100kR302 0662057N23 100kR303 0662057M74 1000R304 0662057N01 12kR305 0662057M67 510R306 0662057N23 100kR307 0662057N23 100kR308 0662057M60 270R309 0662057M32 18R310 0662057M60 270R311 0662057N10 30kR312 0662057M83 2400R313 0662057M62 330R314 0662057M85 3000R315 0662057N01 12kR316 0662057A96 91KR317 0662057M74 1000R318 0662057A79 18R319 0662057A29 150R320 0662057M74 1000R321 0662057M83 2400R322 0662057N30 200kR324 0662057M81 2000R325 0662057M94 6800R326 NOT PLACEDR327 0662057N11 33kR328 0662057M12 2.7R329 0662057M01 0R330 NOT PLACEDR331 NOT PLACEDR332 NOT PLACEDR333 NOT PLACEDR334 NOT PLACEDR335 NOT PLACEDR336 NOT PLACEDR338 NOT PLACEDR339 0662057M01 0R340 0662057M94 6800R342 0662057N23 100kR343 0662057M26 10R344 0662057N01 12kR345 0662057M98 10kR346 0662057N17 56kR347 0662057M74 1000

CircuitRef

MotorolaPart No. Description

R348 0662057M87 3600R349 0662057C01 0R350 0662057N23 100kR351 0662057C01 0R352 0662057M86 3300R355 0662057M01 0R400 0662057N15 47kR401 0662057M01 0R402 NOT PLACEDR403 NOT PLACEDR405 0662057M01 0R406 0662057N20 75kR407 0662057N19 68kR408 NOT PLACEDR409 0662057M98 10kR410 0662057N23 100kR411 0662057M98 10kR413 0662057M01 0R414 0662057V34 180kR415 0662057V26 91kR416 0662057M98 10kR418 0662057M01 0R419 0662057M67 510R420 0662057B46 10M (R421 0662057M81 2000R423 0662057N39 470kR424 0662057N12 36kR425 0662057N10 30kR426 0662057N35 330k (R427 0662057M84 2700R428 0662057M10 2.2R429 0662057M98 10kR431 0662057N39 470kR432 0662057N16 51kR434 0662057M62 330R435 0662057M81 2000R436 0662057M01 0R445 0662057N08 24kR447 0662057N23 100kR448 0662057M98 10kR449 0662057N08 24kR450 0683962T45 68 ohR451 0662057N03 15kR452 0662057N23 100kR453 NOT PLACEDR454 NOT PLACEDR455 NOT PLACEDR456 0662057M01 0R457 0662057M98 10kR460 0662057M90 4700R461 0662057M56 180 (n

CircuitRef

MotorolaPart No.

Page 100: Motorola Gp328 338 Service Manual

6A-38 Circuit Board/Schematic Diagrams and Parts List

U248U301U400U404U405U406U407U409U410

U420VR432VR433VR434VR439VR440VR441VR442VR443VR444VR445VR446VR447VR448VR449VR450VR460VR501VR506

CircuiRef

http

://w

ww.m

yrad

io16

8.na

me

* Motorola Depot Servicing only

5102463J58 3.3V Regulator5109632D83 LVZIF IC5102463J40 3.3V Regulator5185963A53 ASFIC_CMP ICNOT PLACED*5102463J59 Flash ROM 128K x 8*5102463J64 16K x 8 EEPROM5102226J56 Microprocessor5102463J57 3.3V Regulator (not placed in

GP328)5102463J44 Audio PA4805656W08 5.6V Zener4805656W08 5.6V Zener4802245J73 ZENER DIODE-6.8V4880140L17 Zener diode-12V4802245J73 ZENER DIODE-6.8V4802245J73 ZENER DIODE-6.8V4802245J73 ZENER DIODE-6.8V4802245J73 ZENER DIODE-6.8V4802245J73 ZENER DIODE-6.8V4802245J53 ZENER_DIODE-10V4802245J74 ZENER DIODE-10V4802245J74 ZENER DIODE-10V4802245J74 ZENER DIODE-10V4802245J74 ZENER DIODE-10V4802245J75 ZENER DIODE-12V4802245J73 ZENER DIODE-6.8V4813830A18 6.8V Zener4802245J73 ZENER DIODE-6.8V

1485777Z01 INSULATOR (KAPTON)8480450Z13 UHF B1 main PC board

t MotorolaPart No. Description

Page 101: Motorola Gp328 338 Service Manual

Troubleshooting charts 6A-39

9.0 Troubleshooting charts

MCU Check

Power UpAlert Tone

OK?

SpeakerOK?

U409 EXTAL=7.3728 MHz?

U201 Pin 1916.8 MHz

5V at U247?3.3V at U248?

U409 Reset Pin94 High?

MCU is OK

Not able to pro-gram RF Board

ICs

Before replacingMCU, check SPIclock, SPI data,

and RF IC select

ReplaceSpeaker

Read RadioOK?

CheckSetup

Reprogram thecorrect data.

See FGUTroubleshooting

7.5V atPin 3/5 U247?4/3.3V at Pin 1

U248

CheckQ400

ReplaceU247/U248

Check any shortto SWB+,

Vdda or Vddd

Press PTT. RedLED does not

light up

PTT U409Pin 53low?

Press PTTQ502-2High?

CheckPB504

CheckQ502-2voltage

LEDQ502,R501

OK?

ReplaceFaulty

Component

CheckAccessories

J403OPT_SEL_1 &OPT_SEL_2

Pin 8 & 9low?

Radio couldnot PTT

externally

U409Pin 52, 6

low?

See FGUTroubleshoot-

ing chart

LED shouldlight up

CheckMCU

PTT

NO

YES

YES

No

No

NO

YES YES

NO

YES

YES

NO

NO

YES

YES

NO

NO

YES

NO

YES

NO

YES

YES

NO

NO

YES

EXTSPKR

EXTPTT

INTAUDIO

J403 Pin 9 low?Pin 8 high?

ASFIC U404Pin 14 & 15

high?

CheckAccessories

CheckU404

CheckU420 Audio PA

NO

NO

YES

YES

J403 Audioat Pin 2 &

Pin 3

Check Spk.Flex Connec-

Audio atAudioPA(U420)input

Audio from Pin 41ASFIC, U404?

CheckASFIC U404

CheckAudio PA(U420)

CheckU301LV ZIF

Audio atPin 2

U404?

NO

NO

NO

YES

YES

NO

YES

Troubleshooting Flow Chart for Controller

Page 102: Motorola Gp328 338 Service Manual

6A-40 Troubleshooting charts

Bad SINADBad 20dB Quieting

No Recovered Audio

START

Audio at pin27 of U301? Check Controller

Yes

No

Spray of inject 1st IF intoXTAL Filter

IF Freq: 45.1MHz

Audio heard?BYes

No

Check 2nd LO ControlVoltage at C363

VCO locked?BYes

16.8 MHzcheck at pin

22 U301?

Activity onU301 sel pin?

Check FGU

No

No

A

A

Yes

Check Q320 biascircuitry for faults.

Rotate Freq. Knob

Check controller.

Before replacing U301, check 2ndVCO Q320. Check VCO O/P level,

C351, C352.

Yes

No

Troubleshooting Flow Chart for Receiver (Sheet 1 of 2)

Page 103: Motorola Gp328 338 Service Manual

Troubleshooting charts 6A-41

IF Signal atL311?

No

RF Signal atT301?

RF Signal atC310?

No

RF Signal atC307?

No

RF Signal atC301?

No or

Check harmonic filters L101 & L102 andant. switches CR101, CR102, L104

Check filter betweenC301 & C307; programfilter to schematic test

freq and check varactorvoltages.

Inject RF into J101

Are varactorvoltages OK?

No

Yes

Check RF amp (Q301)Stage.

Check filter betweenC310 & T301.

Yes

Check T301, T302,CR306, R308, R309,

R310Yes

1st LO O/POK?

Locked?

Yes

Check FGU

Yes

Trace IF signalfrom L311 to

Q302. Check forbad XTAL filter.

No

Yes Q302 collec-tor OK?IF signalpresent?

Before replacingU301, check

U301 voltages;trace IF signal

path.

Yes

Check for 2.6VDC

Is R5present?

Check Q210, U201(pin 48) voltages and

U247

No

No

No

Check U404 voltage.U404 can be selected by

MCU before replacingU404.

Check varactor filter.

No

Yes

Yes

Yes

A

A

B

weak RF

Troubleshooting Flow Chart for Receiver (Sheet 2 of 2)

Page 104: Motorola Gp328 338 Service Manual

6A-42 Troubleshooting charts

START

No Power

Is There B+Bias for Ant

switch

Check Q111

Is CurrentOK?

Is Control Volt-age High or Low

Check PCIC

1. Check Pin Diodes2. Check Harmonic Filter

Inspect/Repair Tx.Output Network

Is PowerOK?

Done

Check Drive toModule

Is DriveOK? Troubleshoot

VCO

Inspect PA Network/Check Power Out ofU101 at Cap C160

Is PowerOK?

Replace U101

Is PowerOK?

Replace Q101

Done

Done

No

Yes

Yes No

No

Yes

Low

High

No

Yes

Yes

No

Yes

No

Troubleshooting Flow Chart for Transmitter

Page 105: Motorola Gp328 338 Service Manual

Troubleshooting charts 6A-43

5Vat pin 6 ofCR201

Is informationfrom µP U409

correct?

Is U201 Pin 18AT 4.54 VDC?

Is U201 Pin 47AT = 13 VDC

Is U241 Pin 19<0.7 VDC in RX &>4.3 VDC in TX?

Start

Visualcheck of theBoard OK?

CorrectProblem

Check 5VRegulator

+5V at U201Pin’s

13 & 30?

Is 16.8MHzSignal at

U201 Pin 19?

Check FL201, C206,C207, C208, CR203 &

R204

Are signalsat Pin’s 14 &15 of U201?

CheckL202 Check Q260,

Q261 & R260

U201 pin 2 at>3V in Tx and<0.7V in Rx

Replace U201

RemoveShorts

Is there a shortbetween Pin 47 and

Pins 14 & 15 ofU201?

Replace orresolder

necessarycomponents

Is RF level atU201 Pin 32>-30 dBm?

Are R231,R232,R233,C231,C232,

& C233 OK?

Replace U201

If L261, C263 & C264are OK, then see VCOtroubleshooting chart

Are Waveformsat Pins 14 & 15

triangular?

Do Pins 7,8 & 9of U201 togglewhen channel is

changed?

Check programminglines between U409

and U201 Pins 7,8 & 9

Replace U201

Check uP U409Troubleshooting

Chart

NO

YES

NO

YES

NO

YES

NO

YES

NO

NO

NO

YES

YES

NO

YES

YES

NO

YES

YES

YES

NO

NO

NO

NO

YES

NO

YES

YES

Check CR201, U210,U211, C258, C259 &

C228

3.3V at U201pins 5, 20, 34 &

36

Check U248,L201 & L202

Is16.8MHzsignal atU201 pin

23?

ReplaceU201

YES

NO

NO

YES

NO

YES

Troubleshooting Flow Chart for Synthesizer

Page 106: Motorola Gp328 338 Service Manual

6A-44 Troubleshooting charts

START

No LO?

Tx Carrier?

VCO OK

CheckR260

TRB = 5V?Pin 10>1V?

L253 O/C? ChangeL253

ChangeU241

AUX 3High?

Check U201Pin 2 for 3.2V

Pin 19=0V

AUX 4High?

ChangeQ261

V ctrl 0Vor 13V?

L243 OpenCircuit?

ChangeU241

ChangeL243

ChangeU201

Check for faulty parts or dryjoints of L271, L273, C370,

C386, R339 & L320

A

A

No

No

Yes

Yes

Yes

No

No

Yes

Yes

Yes

No

Yes

No

No

Yes

Yes

No

No

Check R245 for dryjoint or faulty

No

Troubleshooting Flow Chart for VCO

Page 107: Motorola Gp328 338 Service Manual

6B-1

Section 6B

MODEL CHART AND TEST SPECIFICATIONS (136-174MHZ)

1.0 Model Chart

GP Series, VHF, 136-174 MHzModel Description

AZH25KDC9AA2 GP328 136-174 MHz 5W 4CH

AZH25KDC9AA3 GP328 136-174 MHz 5W

AZH25KDH9AA6 GP338 136-174 MHz 5W

Item Description

X PMUD1573_ GP328 Super Tanapa 136-174 MHz 5W 4CH

X PMUD1480_ GP328 Super Tanapa 136-174 MHz 5W

X PMUD1481_ GP338 Super Tanapa 136-174 MHz 5W

X PMUD1574_ GP328 Tanapa 136-174 MHz 5W 4CH

X PMUD1495_ GP328 Tanapa 136-174 MHz 5W

X PMUD1496_ GP338 Tanapa 136-174 MHz 5W

X PMLD4159_ GP328 B/C Kit 136-174 MHz 5W 4CH

X PMLD4109_ GP328 B/C Kit 136-174 MHz 5W

X PMLD4110_ GP338 B/C Kit 136-174 MHz 5W

X PMLN4348_ GP328 Front Housing Kit 4CH

X PMLN4216_ GP328 Front Housing Kit

X PMLN4199_ GP338 Front Housing Kit

X X X PMAD4012_ Antenna, 136-155 MHz Stubby

X X X PMAD4013_ Antenna, 155-174 MHz Stubby

X X X PMAD4014_ Antenna, 136-155 MHz 14 cm

X X X PMAD4015_ Antenna, 155-174 MHz 14 cm

X X X PMAD4023_ Antenna, 150-164 MHz 14 cm

X X X PMAD4025_ Antenna, 150-161 MHz Stubby

X X X NAD6579_ Antenna, 148-161 MHz 19 cm

X X 6804110J54 GP328 User Guide

X 6804110J55 GP338 User Guide

x = Indicates one of each is required.

Page 108: Motorola Gp328 338 Service Manual

6B-2 Model Chart

GP Series, VHF, 136-174 MHzModel Description

AZH25KDC9AA3 withoption AZQ203AD

GP328 136-174 MHz 5W (w/o keypad, camouflage)

AZH25KDC9AA3 withoption AZH64AG

GP328 136-174 MHz 5W (w/o keypad, yellow)

AZH25KDH9AA6 withoption AZQ203AF

GP338 136-174 MHz 5W (keypad, camouflage)

AZH25KDH9AA6 withoption AZH64AI

GP338 136-174 MHz 5W (keypad, yellow)

Item Description

X PMUD1804_ GP328 Super Tanapa 136-174 MHz 5W

X PMUD1800_ GP328 Super Tanapa 136-174 MHz 5W

X PMUD1806_ GP338 Super Tanapa 136-174 MHz 5W

X PMUD1802_ GP338 Super Tanapa 136-174 MHz 5W

X PMUD1805_ GP328 Tanapa 136-174 MHz 5W

X PMUD1801_ GP328 Tanapa 136-174 MHz 5W

X PMUD1807_ GP338 Tanapa 136-174 MHz 5W

X PMUD1803_ GP338 Tanapa 136-174 MHz 5W

X X PMLD4109_ GP328 B/C Kit 136-174 MHz 5W

X X PMLD4110_ GP338 B/C Kit 136-174 MHz 5W

X PMLN4539_ GP328 Front Housing Kit

X PMLN4544_ GP328 Front Housing Kit

X PMLN4538_ GP338 Front Housing Kit

X PMLN4545_ GP338 Front Housing Kit

X X X X PMAD4012_ Antenna, 136-155 MHz Stubby

X X X X PMAD4013_ Antenna, 155-174 MHz Stubby

X X X X PMAD4014_ Antenna, 136-155 MHz 14 cm

X X X X PMAD4015_ Antenna, 155-174 MHz 14 cm

X X X X PMAD4023_ Antenna, 150-164 MHz 14 cm

X X X X PMAD4025_ Antenna, 150-161 MHz Stubby

X X X X NAD6579_ Antenna, 148-161 MHz 19 cm

X X 6804110J54 GP328 User Guide

X X 6804110J55 GP338 User Guide

x = Indicates one of each is required.

Page 109: Motorola Gp328 338 Service Manual

Specifications 6B-3

2.0 SpecificationsGeneral

Transmitter

Receiver

All specifications are subject to change without notice.

VHF

Frequency: 136-174 MHz

Channel Capacity: GP328 : 4/16 ChannelsGP338 : 128 Channels

Power Supply: 7.5 Volts ±20%

Dimensionswith Standard

High CapacityNiMH Battery:

with Ultra HighCapacity NiMH Bat-tery:

137mm x 57.5mm x37.5mm

137mm x 57.5mm x40mm

Weight:with Standard

High CapacityNiMH Battery:

with Ultra HighCapacity NiMH Bat-tery:

420 g

500 g

Average BatteryLife @ (5-5-90 DutyCycle)

Standard HighCapacity NiMH Bat-tery:

Ultra High Capac-ity NiMH Battery:

Low Pow-er

>11 hrs

>14 hrs

High Pow-er

>8 hrs

>11 hrs

Sealing: Passes rain testing perIP54

Shock: Meets MIL-STD-810-C,D & E and TIA/EIA 603

Vibration: Meets MIL-STD-810-C,D & E and TIA/EIA 603

Dust: Meets MIL-STD-810-C,D & E and IP54

Humidity: Meets MIL-STD-810-C,D & E and TIA/EIA 603

FCC ID AZ489FT3794

VHF

RF OutputNiMH @ 7.5V:

Low1W

High5W

Frequency 136-174 MHz

Channel Spacing 12.5/20/25 kHz

Freq. Stability(-30°C to +60°C)

0.00025%

Spurs/Harmonics: -36 dBm < 1 GHz-30 dBm > 1 GHz

Audio Response:(from 6 dB/oct. Pre-Emphasis, 300 to3000Hz)

+1, -3 dB

Audio Distortion:@ 1000 Hz, 60%Rated Max. Dev.

<5%

FM Noise: -40 dB

VHF12.5kHz

VHF 20/25kHz

Frequency: 136-174MHz

136-174MHz

Sensitivity12dB EIA SINAD:

0.35 µV 0.35 µV

Adjacent ChannelSelectivity ETS

-60 dB -70 dB

IntermodulationETS

-65 dB -65 dB

Freq. Stability(-30°C to +60°C):

0.00025% 0.00025%

Spur Rejection: -70 dB -70 dB

Image Rejection: -70 dB -70 dB

Audio Output@ <5% Distortion

500 mW 500 mW

Page 110: Motorola Gp328 338 Service Manual

6B-4 Transmitter

3.0 Transmitter

3.1 General(Refer to Figure 6-1)

The VHF transmitter contains five basic circuits:

1. power amplifier

2. antenna switch

3. harmonic filter

4. antenna matching network

5. power control integrated circuit (PCIC).

3.1.1 Power Amplifier

The power amplifier consists of two devices:

1. 9Z67 LDMOS driver IC (U3501) and

2. PRF1507 LDMOS PA (Q3501).

The 9Z67 LDMOS driver IC contains a 2 stage amplification with a supply voltage of 7.3V.

This RF power amplifier is capable of supplying an output power of 0.3W (pin 6 and 7) with an inputsignal of 2mW (3dBm) (pin16). The current drain would typically be 130mA while operating in thefrequency range of 136-174MHz.

The PRF1507 LDMOS PA is capable of supplying an output power of 7W with an input signal of 0.3W.The current drain would typically be 1800mA while operating in the frequency range of 136-174MHz.The power output can be varied by changing the biasing voltage.

Figure 6-1: Transmitter Block Diagram

PCIC

Antenna

P ADriver

Vcontrol Vcontrol

From VCO

Jack

PA-FinalStage

Antenna Switch/Harmonic Filter/

Matching Network

Page 111: Motorola Gp328 338 Service Manual

Transmitter 6B-5

3.1.2 Antenna Switch

The antenna switch circuit consists of two PIN diodes (D3521 and D3551), a pi network (C3531,L3551 and C3550), and three current limiting resistors (R3571, R3572, R3573 ). In the transmitmode, B+ at PCIC (U3502) pin 23 will go low and turn on Q3561 where a B+ bias is applied to theantenna switch circuit to bias the diodes "on". The shunt diode (D3551) shorts out the receiver port,and the pi network, which operates as a quarter wave transmission line, transforms the lowimpedance of the shunt diode to a high impedance at the input of the harmonic filter. In the receivemode, the diodes are both off, and hence, there exists a low attenuation path between the antennaand receiver ports.

3.1.3 Harmonic Filter

The harmonic filter consists of C3532 to C3536, L3531 and L3532. This network forms a low-passfilter to attenuate harmonic energy of the transmitter to specifications level. The harmonic filterinsertion loss should be less than 1.2dB.

3.1.4 Antenna Matching Network

A matching network which is made up of L3538 and C3537 is used to match the antenna'simpedance to the harmonic filter. This will optimize the performance of the transmitter and receiverinto an antenna.

3.1.5 Power Control Integrated Circuit (PCIC)

The transmitter uses the Power Control IC (PCIC), U3502 to control the power output of the radio bymaintaining the radio current drain. The current to the final stage of the power module is suppliedthrough R3519 (0.1ohms), which provides a voltage proportional to the current drain. This voltage isthen fedback to the Automatic Level Control (ALC) within the PCIC to keep the whole loop stable.

The PCIC has internal digital to analog converters (DACs) which provide the reference voltage of thecontrol loop. The voltage level is controlled by the microprocessor through the data line of the PCIC.

There are resistors and integrators within the PCIC, and external capacitors (C3562, C3563 andC3565) in controlling the transmitter rising and falling time. These are necessary in reducing thepower splatter into adjacent channels.

U3503 and its associated circuitry acts as a temperature cut back circuitry. This circuitry provides thenecessary voltage to the PCIC to cut the transmitter power when the radio temperature gets too high.

Page 112: Motorola Gp328 338 Service Manual

6B-6 Receiver

4.0 Receiver

4.1 Receiver Front-End(Refer toVHF Receiver Front End Schematic Diagram on page 6B-20, VHF Receiver Back EndSchematic Diagram on page 6B-21, and VHF Transmitter Schematic Diagram on page 6B-24)

The RF signal is received by the antenna and applied to a low-pass filter. For VHF, the filter consistsof L3531, L3532, C3532 to C3563. The filtered RF signal is passed through the antenna switch. Theantenna switch circuit consists of two PIN diodes(D3521 and D3551) and a pi network (C3531, L3551and C3550).The signal is then applied to a varactor tuned bandpass filter. The VHF bandpass filtercomprises of L3301, L3303, C3301 to C3304 and D3301. The bandpass filter is tuned by applying acontrol voltage to the varactor diode (D3301) in the filter.

The bandpass filter is electronically tuned by the DACRx from IC404 which is controlled by themicroprocessor. Depending on the carrier frequency, the DACRx will supply the tuned voltage to thevaractor diodes in the filter. Wideband operation of the filter is achieved by shifting the bandpass filteracross the band.

The output of the bandpass filter is coupled to the RF amplifier transistor Q3302 via C3306. Afterbeing amplified by the RF amplifier, the RF signal is further filtered by a second varactor tunedbandpass filter, consisting of L3305, L3306, C3311 to C3314 and D3302.

Both the pre and post-RF amplifier varactor tuned filters have similar responses. The 3 dB bandwidthof the filter is about 12 MHz. This enables the filters to be electronically controlled by using a singlecontrol voltage which is DACRx .

Figure 6-2: VHF Receiver Block Diagram

Demodulator

Synthesizer

CrystalFilter

MixerVaractorTuned FilterRF AmpVaractor

Tuned Filter

Pin DiodeAntennaSwitchRF Jack

Antenna

AGC

Control Voltagefrom ASFIC

First LOfrom FGU

Recovered AudioSquelch

RSSI

IF IC

SPI Bus

16.8 MHzReference Clock

SecondLO VCO

IF Amp

U3220

Page 113: Motorola Gp328 338 Service Manual

Receiver 6B-7

The output of the post-RF amplifier filter is connected to the passive double balanced mixer whichconsists of T3301, T3302 and CR3301. Matching of the filter to the mixer is provided by C3317,C3318 and L3308. After mixing with the first LO signal from the voltage controlled oscillator (VCO)using high side injection, the RF signal is down-converted to the 45.1 MHz IF signal.

The IF signal coming out of the mixer is transfered to the crystal filter (Y3200) through a resistor pad(R3321 - R3323) and a diplexer (C3320 and L3309). Matching to the input of the crystal filter isprovided by C3200 and L3200. The crystal filter provides the necessary selectivity andintermodulation protection.

4.2 Receiver Back-End(Refer to VHF Receiver Back End Schematic Diagram on page 6B-21)

The output of crystal filter Y3200 is matched to the input of IF amplifier transistor Q3200 by capacitorC3203. Voltage supply to the IF amplifier is taken from the receive 5 volts (R5). The gain controlled IFamplifer provides a maximum gain of about 10dB. The amplified IF signal is then coupled intoU3220(pin 3) via L3202, C3207, and C3230 which provides the matching for the IF amplifier andU3220.

The IF signal applied to pin 3 of U3220 is amplified, down-converted, filtered, and demodulated, toproduce the recovered audio at pin 27 of U3220. This IF IC is electronically programmable, and theamount of filtering (which is dependent on the radio channel spacing) is controlled by themicroprocessor. Additional filtering, once externally provided by the conventional ceramic filters, isreplaced by internal filters in the IF module (U3220).

The IF IC uses a type of direct conversion process, whereby the externally generated second LOfrequency is divided by two in U3220 so that it is very close to the first IF frequency. The IF IC (U3220)synthesizes the second LO and phase-locks the VCO to track the first IF frequency. The second LOis designed to oscillate at twice the first IF frequency because of the divide-by-two function in the IFIC.

In the absence of an IF signal, the VCO will “search” for a frequency, or its frequency will vary close totwice the IF frequency. When an IF signal is received, the VCO will lock onto the IF signal. Thesecond LO/VCO is a Colpitts oscillator built around transistor Q3270. The VCO has a varactor diode,D3270, to adjust the VCO frequency. The control signal for the varactor is derived from a loop filterconsisting of C3278 to C3280, R3274 and R3275.

The IF IC (U3220) also performs several other functions. It provides a received signal-strengthindicator (RSSI) and a squelch output. The RSSI is a dc voltage monitored by the microprocessor,and used as a peak indicator during the bench tuning of the receiver front-end varactor filter. TheRSSI voltage is also used to control the automatic gain control (AGC) circuit at the front-end.

The demodulated signal on pin 27 of U3220 is also used for squelch control. The signal is routed toU404 (ASFIC) where squelch signal shaping and detection takes place. The demodulated audiosignal is also routed to U404 for processing before going to the audio amplifier for amplification.

Page 114: Motorola Gp328 338 Service Manual

6B-8 Receiver

4.3 Automatic Gain Control Circuit(Refer to VHF Receiver Front End Schematic Diagram on page 6B-20 and VHF Receiver Back EndSchematic Diagram on page 6B-21)

The front end automatic gain control circuit provides automatic reduction of gain, of the front end RFamplifier via feedback. This action is necessary to prevent overloading of backend circuits. This isachieved by drawing some of the output power from the RF amplifier output. At high radiofrequencies, capacitor C3327 provides the low impedance path to ground for this purpose. CR3302 isa PIN diode used for switching the path on or off. A certain amount of forward biasing current isneeded to turn the PIN diode on. Transistor Q3301 provides this current.

Radio signal strength indicator, RSSI, a voltage signal, is used to drive Q3301 to saturation i.e.turned on. RSSI is produced by U3220 and is proportional to the gain of the RF amplifier and the inputpower to the radio.

Resistors R3304 and R3305 are voltage dividers designed to turn on Q3301 at certain RSSI levels. Inorder to turn on Q3301 the voltage across R3305 must be greater or equal to the voltage acrossR3324, plus the base-emitter voltage (Vbe) present at Q3301. Capacitor C3209 is used to dampenany instability while the AGC is turning on. The current flowing into the collector of Q3301, a highcurrent gain NPN transistor, will be drawn through the PIN diode to turn it on. Maximum currentflowing through the PIN is limited by the resistors R3316, R3313, R3306 and R3324. C3326 is afeedback capacitor used to provide some stability to this high gain stage.

An additional gain control circuit is formed by Q3201 and its associated circuitry. Resistors R3206 andR3207 are voltage dividers designed to turn on Q3201 at a significantly higher RSSI level than thelevel required to turn on PIN diode control transistor Q3301. In order to turn on Q3201 the voltageacross R3207 must be greater or equal to the voltage across R3208, plus the base-emitter voltage(Vbe) present at Q3201. As current starts flowing into the collector of Q3201, it reduces the biasvoltage at the base of IF amplifier transistor Q3200 and in turn, the gain of the IF amplifier. The gaincan be controlled in a range of -30dB up to +10dB.

Page 115: Motorola Gp328 338 Service Manual

Frequency Generation Circuitry 6B-9

5.0 Frequency Generation Circuitry

The Frequency Generation Circuitry is composed of two main ICs, the Fractional-N synthesizer(U3701), and the VCO/Buffer IC (U3801). Designed in conjunction to maximize compatibility, the twoICs provide many of the functions that normally would require additional circuitry. The synthesizerblock diagram illustrates the interconnect and support circuitry used in the region. Refer to therelevant schematics for the reference designators.

The synthesizer is powered by regulated 5V and 3.3V which come from U3711 and U3201respectively. The synthesizer in turn generates a superfiltered 4.5V which powers U3801.

In addition to the VCO, the synthesizer must interface with the logic and ASFIC circuitry.Programming for the synthesizer is accomplished through the data , clock and chip select lines fromthe microprocessor. A 3.3V dc signal from synthesizer lock detect line indicates to the microprocessorthat the synthesizer is locked.

Transmit modulation from the ASFIC is supplied to pin10 of U3701. Internally the audio is digitized bythe Fractional-N and applied to the loop divider to provide the low-port modulation. The audio runsthrough an internal attenuator for modulation balancing purposes before going out to the VCO.

Figure 6-3: Frequency Generation Unit Block Diagram

VoltageMultiplier

SynthesizerU3701 Loop

Filter

VCOBICU3801

ToMixer

ToPA Driver

VCP

Vmult1Aux3

MOD OutModulatingSignal

Vmult2

Rx VCO Circuit

Tx VCO

TRB

16.8 MHzRef. Osc.

Rx Out

Tx Out

Circuit

Page 116: Motorola Gp328 338 Service Manual

6B-10 Frequency Generation Circuitry

5.1 Synthesizer(Refer toVHF Synthesizer Schematic Diagram on page 6B-22)

The Fractional-N Synthesizer uses a 16.8MHz crystal (Y3761) to provide a reference for the system.The LVFractN IC (U3701) further divides this to 2.1MHz, 2.225MHz, and 2.4MHz as referencefrequencies. Together with C3761, C3762, C3763, R3761 and D3761 , they build up the referenceoscillator which is capable of 2.5ppm stability over temperatures of -30 to 85°C. It also provides16.8MHz at pin 19 of U3701 to be used by ASFIC and LVZIF.

The loop filter which consist of C3721, C3722, R3721, R3722 and R3723 provides the necessary dcsteering voltage for the VCO and determines the amount of noise and spur passing through .

In achieving fast locking for the synthesizer, an internal adapt charge pump provides higher current atpin 45 of U3701 to put synthesizer within the lock range. The required frequency is then locked bynormal mode charge pump at pin 43 .

Both the normal and adapt charge pumps get their supply from the capacitive voltage multiplier whichis made up of C3701 to C3704 and triple diodes D3701, D3702. Two 3.3V square waves ( 180 degout of phase) are first multiplied by four and then shifted, along with regulated 5V, to build up 13.5V atpin 47 of U3701.

Figure 6-4 Synthesizer Block Diagram

DATA

CLK

CEX

MODIN

VCC, DC5V

XTAL1

XTAL2

WARP

PREIN

VCP

REFERENCEOSCILLATOR

VOLTAGEMULTIPLIER

VOLTAGECONTROLLEDOSCILLATOR

2-POLELOOPFILTER

DATA (U409 PIN 100)

CLOCK (U409 PIN 1)

CSX (U409 PIN 2)

MOD IN (U404 PIN 40)

+5V (U3711 PIN 4)

7

8

9

10

13, 30

23

24

25

32

47

VMULT2 VMULT1

BIAS1

SFOUT

AUX3

AUX4

IADAPTIOUT

GND

FREFOUT

LOCK 4

19

6, 22, 23, 24

4345

3

2

28

14 15

40

FILTERED 5V

STEERINGLINE

LOCK (U409 PIN 56)

PRESCALER IN

LO RF INJECTION

TX RF INJECTION(1ST STAGE OF PA)

FREF (U3220 PIN 21 & U404 PIN 34)

39BIAS2

41

DUALTSTRS

48

5VR5

5, 20, 34, 36(U3201 PIN 5)

AUX1

VDD, 3.3V MODOUT

U3701LOW VOLTAGEFRACTIONAL-NSYNTHESIZER

Page 117: Motorola Gp328 338 Service Manual

Frequency Generation Circuitry 6B-11

5.2 VCO - Voltage Controlled Oscillator(Refer toVHF Voltage Controlled Oscillator Schematic Diagram on page 6B-23)

The VCOBIC (U3801) in conjunction with the Fractional-N synthesizer (U3701) generates RF in boththe receive and the transmit modes of operation. The TRB line (U3801 pin 19) determines whichoscillator and buffer will be enabled. A sample of the RF signal from the enabled oscillator is routedfrom U3801 pin 12, through a low pass filter, to the prescaler input (U3701 pin 32). After frequencycomparison in the synthesizer, a resultant CONTROL VOLTAGE is received at the VCO. This voltageis a DC voltage typically between 3.5V and 9.5V when the PLL is locked on frequency.

Figure 6-5: VCO Block Diagram

Presc

RX

TX

MatchingNetwork

Low PassFilter

Attenuator

Pin8

Pin14

Pin10

(3701 Pin28)

VCC Buffers

TX RF Injection

U3701 Pin 32

AUX3 (U3701 Pin2)

Prescaler Out

Pin 12Pin 19Pin 20

TX/RX/BSSwitching Network

U3801VCOBIC

RxActive Bias

TxActive Bias

Pin2

Rx-I adjust

Pin1

Tx-I adjust

Pins 9,11,17Pin18

VsensCircuit

Pin15

Pin16

RX VCOCircuit

TX VCOCircuit

RX Tank

TX Tank

Pin7

Vcc-Superfilter

Collector/RF in

Pin4

Pin5

Pin6

RX

TX

(U3701 Pin28)

Rx-SW

Tx-SW

Vcc-Logic

(U3701 Pin28)

Steer LineVoltage(VCTRL)

Pin13

Pin3

TRB_IN

LO RF INJECTION

VSF

VSF

VSF

Page 118: Motorola Gp328 338 Service Manual

6B-12 Frequency Generation Circuitry

The RF section of the VCOBIC(U3801) is operated at 4.54 V (VSF), while the control section of theVCOBIC and Fractional-N synthesizer (U3701) is operated at 3.3V. The operation logic is shown inTable 6-1.

In the receive mode, U3801 pin 19 is low or grounded. This activates the receive VCO by enabling thereceive oscillator and the receive buffer of U3801. The RF signal at U3801 pin 8 is run through amatching network. The resulting RF signal is the LO RF INJECTION and it is applied to the mixer atT3302.

During the transmit condition, when PTT is depressed, 3.2 volts is applied to U3801 pin 19. Thisactivates the transmit VCO by enabling the transmit oscillator and the transmit buffer of U3801. TheRF signal at U3801 pin 10 is injected into the input of the PA module (U3501 pin16). This RF signal isthe TX RF INJECTION. Also in transmit mode, the audio signal to be frequency modulated onto thecarrier is received through U3701 pin 41.

When a high impedance is applied to U3801 pin19, the VCO is operating in BATTERY SAVER mode.In this case, both the receive and transmit oscillators as well as the receive transmit and prescalerbuffer are turned off.

Table 6-1: VCO Control Logic

DesiredMode AUX 4 AUX 3 TRB

Tx n.u. High (@3.2V) High (@3.2V)

Rx n.u. Low Low

Battery Saver n.u. Hi-Z/Float(@1.6V)

Hi-Z/Float (@1.6V)

Page 119: Motorola Gp328 338 Service Manual

Notes For All Schematics and Circuit Boards 6B-13

6.0 Notes For All Schematics and Circuit Boards* Component is frequency sensitive. Refer to the Electrical Parts List for value and usage.

1. Unless otherwise stated, resistances are in Ohms (k = 1000), and capacitances are in picofarads(pF) or microfarads (µF).

2. DC voltages are measured from point indicated to chassis ground using a Motorola DC multime-ter or equivalent. Transmitter measurements should be made with a 1.2 µH choke in series withthe voltage probe to prevent circuit loading.

3. Reference Designators are assigned in the following manner:

400/500 Series = Controller

600 Series = Keypad Board

3200 Series = IF Circuitry

3300 Series = Receiver

3500 Series = Transmitter

3700 and3800 Series = Frequency Generation

4. Interconnect Tie Point Legend:

UNSWB+ = Unswitch Battery Voltage (7.5V)

SWB+ = Switch Battery Voltage (7.5V)

R5 = Receiver Five Volts

CLK = Clock

Vdda = Regulated 3.3 Volts (for analog)

Vddd = Regulated 3.3 Volts (for digital)

CSX = Chip Select Line (not for LVZIF)

SYN = Synthesizer

DACRX = Digital to Analog Voltage (For Receiver Front End Filter)

VSF = Voltage Super Filtered (5 volts)

VR = Voltage Regulator

6-LAYER CIRCUIT BOARD DETAIL VIEWINGCOPPER STEPS IN PROPER LAYER SEQUENCE

LAYER 1 (L1)

LAYER 2 (L2)LAYER 3 (L3)LAYER 4 (L4)

LAYER 5 (L5)LAYER 6 (L6)

INNER LAYERS

SIDE 1

SIDE 2

Page 120: Motorola Gp328 338 Service Manual

6B-14 Notes For All Schematics and Circuit Boards

Page 121: Motorola Gp328 338 Service Manual

Circu 6B-15

7.0

C50

2

C505C521

C3212 C3213

PB501

R32

14

R32

15

C32

09

R3217

VR440

C511

C512 C513

C514

7

R3218

Q32

02

C3225

C3270 C3271

C32

72

C32

73

C32

75

C32

76

C3277C 3278

C3279

C3280

19

C35

21

C35

23

C3524

C3525

C3527

C3528

C3531

C3532

C3534

C3535

C3536

C3537

C3539

C3550

C3551

C3552

CR503

CR

3303

D3270

D3521

D3551

L327

0

L327

1

L3521

L3522

L3531

L3532

L3538

L3551

L3552

PB505

Q502

Q505

Q3270

R502

R506

09

R32

70

R32

71

R3272

R32

73

R3274R3275

R3276

R3513

R3551

U32

01

VR501

C520

C3214

C33

06

C3307

C33

08

C33

09

C33

10C33

11

C33

13

C33

14

C3327

C3330C3331

C33

32

C33

38

D3302L3304

L3305L3306

L3518

Q3302

R501

R505

R3225

R3213

R33

09

R3310

R3311

R3313

R3316

17

SH3501

4

SH3303

C3274

C3312

C3533

R3226

R3308 R3312

SH3201

C33

19

C3215

43

21

6 4

3

1

VHF (136-174MHz) Main Board Top Side PCB No. 8486062B09

http

://w

ww.m

yrad

io16

8.na

me

it Board/Schematic Diagrams and Parts List

Circuit Board/Schematic Diagrams and Parts List

C400

C401

C402

C423

C424

C425C426

C427C428

C429

C432

C441

C443 C444

C467

C471C472C473

C480C482

C490

C491

C492

C493C494C495C496C497

CR412

CR

413

E407E408

E40940

J400

J403

L400

Q400

Q403

Q405

Q41

7

R401

R402

R403

R405

R406

R407

R408

R410

R41

8

R421

R427

R428R429

R435

R437

R450

R476

R477

R478

R481

R492

RT400

SH400

TP401

TP402

TP405TP406

TP410

TP415

U405U406

VR434

VR447

VR449

VR450

C403

C3706

C3712

C3713

C3714

C3741

C3742

C3743

C3744

C3746

C37

52

C37

54

C3822

C3824C3825

C3828C3829

C3830

C3832

C3834

C3835

C3836

C3842CR440

D3831

D3832

L401

L3821

L3822

L3823

L3824

L3825

L3831

L3832 L3833

L383

4

R416

R447 R448

R3701

R3741

R37

51

R3821

R3828

R3833

R3835R3836

SH3801

U400U

3711

B503 B504

C522

C3200C3201

C3205

C3320

C3334

C3335

C3710

C37

11

C 3722C3724

C3745

C37

53

L3200

L3309

L3312

PB502PB503 PB504

Q3721

R3200

R3318

R3321

R3322

R3323

R3721

R3722

R3723

R3752

SH3701

T33

02

TP3701

VR444

Y3200

Y3761

C3202

C3203

C3206

C320

C3208

C3503

C3512

C3513

C3514

C3517

C35

C3541C3542

C3543C3544

L3201 L3202

L 3501

L350

2

L350

3

L3504

L3511L3512

L3513L3515

Q3200

Q32

01

R3202

R3203

R3205

R3206R3207

R3208

R32

R3211

R3541

R3542R3543

SH3203

U3501

C3318

C3329

C3501C3504

C3505C3518

C3546

C3547

C3721

C3826C3833

D3821 Q3501

R3201

R3204

R33

R3501

R3502R3503

R3512

R3544R3545

R3546

R3547R3548

R3822R3823

R3834

SH3502

T33

01

C320

C3502

R3212

R3505

SH3302

C523

TP3301

TP3702

R446

SH401

U407

C3210R3210

22

20

1

21

43

4 3

2 3

43

6436

4 3

4

5

22

218

7

32 17

161

1

45

8

16

8

9

3

1

8

6

3 4

3

46

21

5

2

Page 122: Motorola Gp328 338 Service Manual

6B-16 Circuit Board/Schematic Diagrams and Parts List

C431

C433

C434

C436C437

C453

C3701

C3702

C3703

C37

04

C3705

C37

07C

3709

C3725

C37

33

C3734

C3751

CR

411D3701

D37

02

FL4

01

L373

1

Q41

6

R414

R415

R419

R420R426

R432

R460

R462

R463

R3702

3

4

R3705

R3726

U41

0

VR442

C407

C408

C414C415

C416

C41

9

C42

0

C42

1

C42

2

C430

C435

C440

C442

C445

C447

C44

8

C449

C451

C45

2

C456

C458C459

C463

C466

C475

C476

C479

C3708

C3815

C38163818

C3827

E400

E401

E402

E403

E404

E405

L410

L411

L3813

L3816

Q410

R409R411

R41

3

R423

R424

R425R431

R445

R449

R457R461

R472

R473

12

R3816

R3817

R3829

R3830

R3831

R3832

SH402

SH403

U404

U409

U420

VR

432

VR

433

VR 445

VR 446

VR 448

C410

C481

R434

R436

R471

R475

01

E406

R400

C409

C411 C450

C3763

R3761R3760

D3761

11

20

3

2

48

3637

2524

1213

1

11

1

20

10

4

1

1213

3

75

5025

1

1

5

100

ZWG0130073-A

VHF (1

http

://w

ww.m

yrad

io16

8.na

me

B501

C535

C32

11

C3219

C32

20

C3221

C3223

C3224

C3226

C3227

C3228

C3229

C3230

C32

31

C32

32

C32

33

C32

34

C3235

C3236

C32

38

C3239

C3240C3241

C32

42

C3243

C3244

C3301

C3304

C3305

C3315C3316C3317

C3321

C3322 C3323C3324

C3325

C3326

C3337C3339

C3726

C37

27

C37

31

C37

32

C3735

C37

55

C37

61

C 3

762

CR3301

CR3302D3301

F501

J3501

J3502

L505

L3221

L3301 L3303

L330

8

L370

1

Q33

01

R3220 R32

21

R3222

R3223

R3224

R3304R3305

R3307

R3314R3315

R3319R3320

R3324

R370

R370

R37

27

R37

62

R3763

S501

SH3702

U3701

VR

439

VR441

VR

506

Y3762

C503

C3303

C3336

C3506C3507 C3509

C3515

C3516

C3526

C3560

C3561

C3562

C3563

C3564

C3565

C3568

C3569

C3802

C38

04

C3805

C3806C38

08

C3809

C3811C3812

C38

13

C

C38

21

C3823

CR501

H3501

L3519

L3523

L380

1L3

809 L3

811

L3812

L3826

Q38

01

R3303

R3306

R3519

R3561

R3562

R3563

R3564

R3571

R3572R3573

R3801

R38

02

R3805

R3806

R3807

R3811

R38

R3818

R38

25

R3826

SH3202

SH3301

TP3502

U3502

U35

03

C3237

C3302

C3508C3803

C3810

Q35

61

R3569

R3570

R3803

R3804

R38

24

S502

U3220

C3801

R38

08

SH3802

U38

R3222

R3219

C32

18

C3566

179

25

1

10

2

3

4

4

C

8

C

2

2

3 5

4

148

3637

2524

1213 1

2

3

3

4

483637

2524

1

36-174MHz) Main Board Bottom Side PCB No. 8486062B09

Page 123: Motorola Gp328 338 Service Manual

Circu 6B-17

C50

2

C505C521

C3212 C3213

PB501

R32

14

R32

15

C32

09

R3217

VR440

C511

C512 C513

C514

R3218

Q32

02

C3225

C3270 C3271

C32

72

C32

73

C32

75

C32

76

C3277C 3278

C3279

C3280

C35

21

C35

23

C3524

C3525

C3527

C3528

C3531

C3532

C3534

C3535

C3536

C3537

C3539

C3550

C3551

C3552

CR503

CR

3303

D3270

D3521

D3551

L327

0

L327

1

L3521

L3522

L3531

L3532

L3538

L3551

L3552

PB505

Q502

Q505

Q3270

R502

R506

R32

70

R32

71

R3272

R32

73

R3274R3275

R3276

R3513

R3551

U32

01

VR501

C520

C3214

C33

06

C3307

C3308C3309C

3310C33

11

C33

13

C33

14

C3327

C3330C3331

C33

32

C33

38

D3302L3304

L3305L3306

3518

Q3302

R501

R505

R3225

R3213

R33

09

R3310

R3311

R3313

R3316

SH3501

4

SH3303

C3274

C3312

C3533

R3226

R3308 R3312

SH3201

C3215

43

21

6 4

3

1

1

HF (136-174MHz) Main Board Top Side PCB No. 8486062B12

http

://w

ww.m

yrad

io16

8.na

me

it Board/Schematic Diagrams and Parts List

C400

C401

C402

C423

C424

C425C426

C427C428

C429

C432

C441

C443C444

C467

C471C472

C473

C480C482

C490

C491

C492

C493C494C495C496C497

CR412

CR

413

E407E408

E40940

J400

J403

L400

Q400

Q403

Q405

Q41

7 R401

R402

R403

R405

R406

R407

R408

R410

R41

8

R421

R427

R428R429

R435

R437

R450

R476

R477

R478

R481

R492

RT400

SH400

TP401

TP402

TP405TP406

TP410

TP415

U405U406

VR434

VR447

VR449

VR450

C403

C3706

C3712

C3713

C3714

C3741

C3742

C3743

C3744

C3746

C37

52

C37

54

C3822

C3824C3825

C3828C3829

C3830

C3832

C3834

C3835

C3836

C3842CR440

D3831

D3832

L401

L3821

L3822L3823

L3824

L3825

L3831

L3832 L3833

L3834

R416

R447 R448

R3701

R3741

R37

51

R3821

R3828

R3833

R3835R3836

SH3801

U400

U3711

B503 B504

C522

C3200C3201

C3205

C3320

C3334

C3335

C3710

C37

11

C 3722C3724

C3745

C37

53

L3200

L3309

L3312

PB502PB503 PB504

Q3721

R3200

R3318

R3321

R3322

R3323

R3721

R3722

R3723

R3752

SH3701

T33

02

TP3701

VR444

Y3200

Y3761

C3202

C3203

C3206

C3207

C3208

C3503

C3512

C3513

C3514

C3517

C3519

C3541C3542

C3543C3544

L3201 L3202

L 3501

L350

2

L350

3

L3504

L3511L3512

L3513L3515

Q3200

Q32

01

R3202

R3203

R3205

R3206R3207

R3208

R3209

R3211

R3541

R3542R3543

SH3203

U3501

C3318

C3329

C3501C3504

C3505C3518

C3546

C3547

C3721

C3826C3833

D3821

L

Q3501

R3201

R3204

R3317

R3501

R3502R3503

R3512

R3544R3545

R3546

R3547R3548

R3822R3823

R3834

SH3502

T33

01

C32

C3502

R3212

R3505

SH3302

C523

TP3301

TP3702

C33

19

R446

SH401

U407

C3210R3210

2220

1

21

43

4 3

2 3

43

6

436

4 3

4

5

22

218

7

32 17

161

1

45

8

16

8

9

3

1

8

6

3 4

3

46

21

5

2

5

51

1

1

51

1

1

1

20

1

1

V

0

Page 124: Motorola Gp328 338 Service Manual

6B-18 Circuit Board/Schematic Diagrams and Parts List

C431

C433

C434

C436C437

C453

C3701

C3702

C3703

C37

04

C3705

C37

07C

3709

C3725

C37

31

C37

33

C3734

C3751

CR

411D3701

D37

02

FL4

01

L373

1

Q41

6

R414

R415

R419

R420R426

R432

R460

R462

R463

R3702

R3703

R3704

R3705

R3726

U41

0

701

VR442

Y3762

C407

C408

C414C415

C416

C41

9

C42

0

C42

1

C42

2

C430

C435

C440

C442

C445

C484C447

C44

8

C449

C451

C45

2

C456

C458C459

C463

C466

C475

C476

C479

C3708

6

812

C38

13

C3815

C3816C3818

C3827

E400

E401

E402

E403

E404

E405

L410

L411

L3813

L3816

Q410

R409R411

R41

3

R423

R424

R425R431

R445

R449

R457R461

C483R472

R473R3812

R3816

R3817R3818

6R3829

R3830

R3831

R3832

SH402

SH403

U404

U409

U420

VR

432

VR

433

VR448

C410

C481

R434

R436

R471

R475

U3801

E406

R400

C409

C446 C450

C3763

R3761R3760

D3761

C447

C477

C478

C411

11

1 20

10

3

2

48

3637

2524

1213

1

11

1

20

10

4

148

1213

3

75

5025

1

1

5

100

VHF (1

http

://w

ww.m

yrad

io16

8.na

me

24

B501

C535

C32

11

C3219

C32

20

C3221

C3223

C3224

C3226

C3227

C3228

C3229

C3230

C32

31

C32

32

C32

33

C32

34

C3235

C3236

C32

38

C3239

C3240C3241

C32

42

C3243

C3244

C3301

C3304

C3305C3315C3316

C3317

C3321

C3322 C3323C3324

C3325

C3326

C3337C3339

C3726

C37

27

C37

32

C3735

C37

55

C37

61

C 3

762

CR3301

CR3302D3301

F501

J3501

J3502

L505

L3221

L3301 L3303

L330

8

L370

1

Q33

01

R3220 R32

21

R3222

R3223

R3224

R3304

R3305

R3307

R3314R3315

R3319R3320

R3324 R37

27

R37

62

R3763

S501

SH3702

U3

VR

439

VR441

VR

506

C503

C3303

C3336

C3506C3507 C3509

C3515

C3516

C3526

C3560

C3561

C3562

C3563

C3564

R3565

C3568

C3569

C3802

C38

04

C3805

C380C38

08

C3809

C3811C3

C38

21

C3823

CR501

H3501

L3519

L3523

L380

1L3

809 L3

811

L3812

L3826

Q38

01

R3303

R3306

R3519

R3561

R3562

R3563

R3564

R3571

R3572R3573

R3801

R38

02

R3805

R3806

R3807

R3811

R38

25

R382

SH3202

SH3301

TP3502

U3502

U35

03

C3237

C3302

C3508C3803

C3810

Q35

61

R3569

R3570

R3803

R3804

R38

24

S502

U3220

C3801

R38

08

SH3802

R3222

R3219

C32

18

C3566

RT3301R3301

R3566

R3567

C3565

C3571

179

25

2

3

4

4

C

8

C

2

2

3 5

4

148

3637

2524

1213 1

2

3

3

4

3637

2524

1

816

32

36-174MHz) Main Board Bottom Side PCB No. 8486062B12

Page 125: Motorola Gp328 338 Service Manual

Circu 6B-19

16.8MHz

DACRx_1_SW

5V_2_SW

RESET_2_SW

CLK_4_SW

DATA

CLK

RSSI

DEMOD

SQ_OUT

CLK_5_SW

DATA_5_SWDATA_4_SW

5V_5_SW

16_8MHz_1_SW

LVZIF_SEL

CSX

RESET

DACRx

LVZIF_SEL_2_SW

DACRX_2_SW

DATA_3_SW

CLK_2_SW CLK_3_SW

LVZIF_SEL_1_SW

16_8MHz_2_SW

CSX_1_SW

DATA_2_SW

CSX_2_SW

5V_1_SW5V

RESET_1_SW

5V_3_SW

SQ_OUT_1_SW

CLK_1_SW

DEMOD_1_SW

DATA_1_SW

RSSI_2_SW

DEMOD_2_SW

SQ_OUT_2_SW

5V_4_SW

RSSI_1_SW

ZWG0130024-A

VHF Controls And Switches Schematic Diagram

http

://w

ww.m

yrad

io16

8.na

me

it Board/Schematic Diagrams and Parts List

UNSWB+

MECH_SWB+SWB+_1_SW MECHSWB+_1_SW

RED_LED

SWB+

Vdda

RTA3_1_SW

GREEN_LED_1_SW

PTT

VOL

RTA0

EMER

SB2

SB3

RTA1

RTA3

RTA2_1_SW

RTA0_1_SW

SB1

RTA1_1_SW

SB1_1_SW

UNSWB+_2_SW

RED_LED_1_SW

SB2_1_SW

Vdda_2_SW

LI_ION_1_SW

SWB+_2_SW

RTA2

BATT_CODE

RTA0

RTA1

RTA2

RTA3

SB1

SB2

SB3

SWB+

UNSWB+

VOL

Vdda

BATT_CODE

EMER

GREEN_LED

LI_ION

MECH_SWB+

PTT

RED_LED

PTT_1_SW

SWB+_3_SW

GREEN_LED

Vdda_3_SW

VOL_1_SW

UNSW+_1_SW

BATT_CODE_1_SW

LI_ION

Vdda_1_SW

EMER_1_SW

SB3_1_SW

Page 126: Motorola Gp328 338 Service Manual

6B-20 Circuit Board/Schematic Diagrams and Parts List

NU1K

R3320

.022uF

C3318

1KR3319

NU

22pFC3335

150nH

L3309

R3321150

39pFC3317

4C333910pF

82pF

C3320

SH3303SHIELDSHIELD

SH3302SHIELDSHIELD

SH3301SHIELDSHIELD

L3308

C3315

10nH

.022uF

33nHL3312

CR3301

2

34

1

C3319

NU2.7pF

C333420pF

IF

VHF_RX

0102726

R3322

R3323220

18

C3316

NU100pF

2

IF_1_FE

XFMR

T3302

4

6

3

1

mgc_comps

T3301

XFMR4

6

3

1

2

mgc_comps

TP3301

470R3318

ZWG013

VHF R

http

://w

ww.m

yrad

io16

8.na

me

CR3303

R3306

R3324

2.2K

1K

R3311NU2.2pF

10

C3305

C3321

C3311

330pFC3324

150pF

33pF

Q3301

470nHL3304

15pF

C3303

100K

R3317

10

R3314

R3316470

100K

R3303

C3308330pF

C3338

RX_IN_1_FE

470pF

C3307100pF

12nHL3303

150pFC3313

RX_IN

R5

C3332

RX_INJ_1_FE

L3301

39pF

C331

12nH6.8pFNU

33KR3307

D3302

0.1uFC3309

100pFC3323

22

R3313 C3312

16pF

L330612nH

.022uFC3337

R3309

C3304

5.6K

C3331

150pF

C3330100pF100pF

0.1uF

C3326

NU

1000pFC3325

330pFC3327

0.1uF

C3306

330R3315

L330512nH

DACRx

C3322100pF

33R3312

R5_2_FE R5_3_FE

R330547K

RSSI_1_FE

DACRx_1_FE

C3329330pF

C3301

RX_INJ

RSSI

5.6pF

C3310

NU1pF

100K

R3304

D3301

1.5KR3308

C3302

150pF

SMBV1032CR3302

Q3302

10K

R3310

UNSWB_PLUS_1_RX

UNSWB+

C333610uF

UNSWB_PLUS_2_RX

2.7V

eceiver Front End Schematic Diagram

Page 127: Motorola Gp328 338 Service Manual

Circu 6B-21

C32411200pF

CLK

VAG 32

VAG_REF 25

ROSE_VCC 30ROSE_VSS 29

GR

EE

N_V

CC

41

GR

EE

N_V

SS

43

31LIM

?XM

IX_B

YP

MLP

D_C

R24

PHASE_LOCK 26

DA

TA

DEMOD_HF 28DEMOD_OUT 27

?XF

RE

F

GN

D20

39

C3M 35

C3P

38

C4M 36C4P

37

19C

EX

18C

LK

BLU

E_V

CC

BLU

E_V

SS

44

BR

OW

N_V

CC

22 ?XB

RP

_OF

F

C1M 33

C1P

40

C2M 34

C2P

c_comps

322032D83

1uFC3234

1uFC3231

C32350.22uF

16_8MHz_3_ZIF

0102726B13

SQ_OUT

1uFC3232

16.8

MH

z

SH3203SHIELDSHIELD

C3237100pF

R3223

C3233

1K

1uF

22uF3239

SQ_OUT_1_ZIF

DATA_3_ZIF

CLK_3_ZIF

0.1uFC3225

10

R3224

0.22uFC3240

LVZIF_SEL_1_ZIF

DEMOD_1_ZIF

.01uFC3236

.01uF

LVZ

IF_S

EL

C3227

DEMOD

SHIELDSH3202SHIELD

C3242 0.1uF

C32230.1uF

0.1uFC3224

Vdd_FILTERED

Vdd_FILTERED

ERED

VHF_ZIF

NU

NU

NU

VHF Receiver Back End Schematic Diagram

http

://w

ww.m

yrad

io16

8.na

me

it Board/Schematic Diagrams and Parts List

R32051K

NU1µHL3201

L3200

Vdda

1µH

330pFC3271

DA

TA

1KR3209

RSSI_OUT4

TE

ST

A16

TESTD8VPP9

PR

EA

MP

_OU

T47

PR

E_A

GC

48

PRE_IN3

RED_VCC1RED_VSS2

RSSI_FLT5

15IO

UT

46M

IX_I

N

EMIT11

EXTBS6

GOLD_VCC10

GO

LD_V

SS

14C

OL

13 17

12

45

mg

U

AFC7

BASE

4.7uFC3211

0.15uF

C3238

1uH

L3221

L32021uH

100pFC3203

R3220

4.7K

R32124.7K

0.1uFC3222

IF

.01uFC3244

1KR3274

56pFC3275

39KR3207

5V_3_ZIF

RSSI

Q3201

R5_3_ZIF

12pFNU

C3202

C32780.1uF

R320422

R3276

10

NU

200K

R3217

82pF

C3277

GN

D

1

GN

D1

2

GN

D2

3

GN

D3

4

OUT 3IN6

TBDXTALY3200

2.2pFC3207

C32808200pF

D3270

C32791uF

100K

R3206

.01uFC3206

C32260.1uF

5V

C327433pF

4.7uFC3213

C32121uF

R3215

100

Q3200MMBR941

MMBR941

R3203

R3221

10K

100

.0C

R3200

R5

150

47

SWB+

R3271

R32012.2K

C3204 C3205.01uF 0.1uF

C32080.1uF

NU

100R3208

C3201

NU1.5pF

2.2K

1uF

R3213

C3209

C3221.01uF

0.1uF

100

C3219

R3219

R3226

10

RSSI_1_ZIF

L32712.2uH

4.7KR3202

R32753.9K

C3229100pF

100KR3222

NU

C3243.022uF

C3228.01uF

1KR3270

C3273

10pF

47pFC3276

C3200

4.7uF

16pF

?XON_OFF

VIN?XVOUT

C3218

LP29801U3201

?X

GND?X

100R3214

Vdda_3_ZIF

R3218

SWB_PLUS_3_ZIF

2.2K

10

R3211

4.7pFC3272

IF_1_ZIF

R327247K

R327347K

Q3270 1

3

2

SHIELDSH3201

?X

BFQ67W

SHIELD

C3230

10pF

C3220

100pF

RSSI_2_ZIF

.022uFC3270

L3270

Vdd_FILTERED5V

RSSI

100nH

Vdd_FILT

RSSI

Vdd_FILTERED Vdd_FILTERED

5V

Vdd_FILTERED

C3210

1000pF

10pFC3215

Q3202

VSF_3_ZIFVSF

5V

1K

R3225

0.1uFC3214

2.9V

1.5V

1.9V @ -47dBm

1.5V

0.8V

3.3V

1.5V

Page 128: Motorola Gp328 338 Service Manual

6B-22 Circuit Board/Schematic Diagrams and Parts List

.01uFC3732C3731

.01uF

L3731

2.2uH

0.1uFC3712

2.2uFC3713

2.2uFC3755

2.2uFC3733

C3745220pF

C3744220pF 220pF

C3743

R3752330K

R3751200K

C37534.7uF 1000pF

C37520.1uF

C3754

100pF

C3727

7617K

SWB+

0102726B

C3734.01uF

C37631.6pF

C3742220pF

CSX

CLK

DATA

MODIN

Vdda

8.2pFC3726

PRESC

VSF

PRESC_1_FN

SWB_PLUS_1_FN

VSF_1_FN

Vdda_1_FN

DATA_1_FN

CLK_1_FN

C37510.1uF

NU

FA

DJ

3

OU

T

1VDD 5V

NUOSC_16.8MHZY3762

OSC_16.8MHZ

2

TP37021

100KR3727

MODIN_1_FN

CSX_1_FN

VHF_FR

21

32

35

18

2726

30

10

172931

8

7

4039

42

9

R3760

NU0

7.5V

2.5V - 3.5V

4.55V

3.3V

VHF S

http

://w

ww.m

yrad

io16

8.na

me

1K

R3723100

0.1uF

C3704

(SOURCE)

R3722

.01uF

C3701.01uF

A1 6A2 5A3 4

K11 K22 K33

D3702

UMC5N

2

4

1

3

Q3721

UMC5N

C3762

C3761

330pF

56pF

C3703.01uF

C3702 K2

3 K3

.01uFD3701

A1 6A2 5

4A3

1 K1

2

C37210.1uF

C37241uF

2.2uFC3711

L3701

C3746

390nH

220pF

R3721

470

R34

D3761

C37064,7uF

C37220.1uF

C3705

150R3703

0 NU

R3702

R3701

0.1uFC3708

100

5V

R3762

NU2.2K

VCTRL

LOCK

5V

R5

16.8MHz 100

R3741

22pF

C3707

0.1uFC3709

150R3704

33KR3705

C3741

GND

3

IN1

OUT 2

NU56pF

VCO_MOD

16.8MHzY3761

TRB

VMULT2VMULT3VMULT4

VR

O

WARP

XTAL1XTAL2

SFCAP

SFIN

SFOUT

TEST1TEST2

VBPASS

VC

P

VMULT1

PD

_GN

D

PD

_VD

D

PREIN

PR

E_G

ND

PR

E_V

DD

PVREF

REFSEL

SFBASE

INDMULT

IOUT

LOCK

MODINMODOUT

NC1NC2NC3

CCOMP

CEX

CLK

DATA

DG

ND

DV

DD

FREFOUT

IADAPT

AG

ND

AUX1AUX2AUX3AUX4

AV

DD

BIAS1BIAS2

U370109Z8809Z88

ADAPTSW

SH3701SHIELD

T5

R5_1_FN

SHIELD

VCTRL_1_FN

R5_2_FN

T5_1_FN

VCO_MOD_1_FN

BIAS_ADJ_1_FN

TRB_1_FN

LOCK_1_FN

5V_1_FN

2.2uFC3710

R3763

NU100

C3735

4GND

.01uFNU

1TP3701

SHIELDSH3702SHIELD

NU

C37250.1uF

16_8MHz_1_FN

R3726

BIAS_ADJ

47KNU

ADP3300

6ERR

1

GN

D

5IN

2 NR4 OUT

3SD

U3711ADP3300

11

13

25

2324

28

3738

151412

33

34

4

41

44

56

36

19

45

16

43

123

20

46

22

48

47

C37144,7uF

5V

400mV RMS

120mV RMS

3.5 - 9.5V@135-174MHz

R: 5VT: 0V

R: 0VT: 5V

[email protected]

13.2V

RF mV RMS measured with high impedance probe.

ynthesizer Schematic Diagram

Page 129: Motorola Gp328 338 Service Manual

Circu 6B-23

NU100K

R3812

15pF

C3836

L38341uH

6.8pF

C3835

C3826

4.7pF

OD_1_VCO

L3824

1uH

L3825100nH

C38421000pF

38246pF

L382156nH

VCTRL_1_VCO

L38261uH

L382247nH

BIAS_ADJ

C382515pF

L383156nH

D3831

BIAS_ADJ_1_VCO

56nHL3833

0.1uFC3827

F

VCTRL

C3828

34

.01uF

100

R3828

VCO_MOD

.01uFC3829

D3821

33KR3823

0102726B14

L383268nH

C383068pF

L382347nH

VCO

ZWG0130020-

50mV RMS R: 1V RMS

R, T: 3.5V-9.5V@ 135MHz-174MHz

R:1.7VT: 0V

T: 1V RMS

VHF Voltage Controlled Oscillator Schematic Diagram

http

://w

ww.m

yrad

io16

8.na

me

it Board/Schematic Diagrams and Parts List

4.7pFC3833

C38221000pFC3813

.01uF

1000pFC3832

VSF_1_VCO

VCO_M

18

R3826

1

SHIELDSH3802SHIELD

1

SHIELDSH3801SHIELD

TX_INJ_1_VCO

R3835

47K

12K

10K

R3832

1K

R3831

R3816

10R3808

1000pF

T5

C3815

C5

L3812100nH

L3811100nH

C38031000pF

0.1uF

VSF

RX_INJ_1_VCO

C3804

R380524K

NU0

R3830

C3806

100pF

Vdda

VSF

TRB

18

VC

C_L

OG

IC

Q3801

3SUPER_FLTR

TRB_IN19

16TX_BASE

15TX_EMITTER

1TX_IADJ10

TX_OUT

13TX_SWITCH

14

VC

C_B

UF

FE

RS

9

GN

D_F

LAG

GN

D_L

OG

IC

17

12PRESC_OUT

5RX_BASE6RX_EMITTER

2RX_IADJ8RX_OUT

7RX_SWITCH

4COLL_RFIN

20FLIP_IN

11

GN

D_B

UF

FE

RS

PRESC_1_VCO

U380150U54

47

10K

R3834

220

R3836

R3821

R3825

33

47

R3822

27nHL3809

220

R3833

C3801

4.7pF

C380815pF

T5_1_VCO

R380622

D3832

R3801220

100R3802

R3803220

C380222pF

NU

0.1uFC3812C3810

10pFNU

L3816

100nH

R3811

100

C3823.01uF

C38110.1uF

56pC38

C3809

PRESC

27pF

R38180NU

10KR3804

6.8pFC3816

R3807

NU

C3821.01uF

R5_1_VCO

C3818

.022uF

R38170

L38131uH

R3824

TRB_1_VCO

22K

Vdda_3_VCO

TX_INJ

R3829

R5

0

100nH

RX_INJ

L3801

VSF

NU

1K

C38054.7pF

R:4.6VT: 0V

R:4VT: 2.8V

3.3V 4.55V

R: 2

T: 250mV RMS

R:0VT: 3.1V

3.1V

500mVRMS

R:0.9VT: 0V

800mVRMS

RF mV RMS measured with high impedance probe.

Page 130: Motorola Gp328 338 Service Manual

6B-24 Circuit Board/Schematic Diagrams and Parts List

C353527pF 15pF

C35364

TAB3

4TAB4

J3502ANTENNA_NUT

1 TAB1

2TAB2

3

RX_IN

2

UNSWB+

LD02LD

Q3561NU

RX_IN_1_PA

D3551C35507.5pF

C35344.7pF

C35337.5pF

C3532

68pF

1uHL3523

525

pF

R3571

R3572

120

120

R3573120

7.66nH

56pF

L3552

C3551

C3552

39

68pF

R3551

L355143.67nH

L3532

43.67nH43.67nH

L3531

5.6pFC3539

30.54nHL3538

C3531

18pFC3537

20pF

3

RF_JACKJ3501

GND4

1

2

D3521

528pF

ZWG0130021-A

VHF Tr

http

://w

ww.m

yrad

io16

8.na

me

5185963A15

1

Microstrip

LM50C

120pFC3523

18pFC352

3300pFC3568

1 2 3

SHIELDSH3501SHIELD

1

5V

1

TP3502

SHIESH35SHIE

D

G

S

DATA

Q3501

330K

220pFC3564

R3564

0.1R3519

R354712K

CSX

RESET

C3546330pF

330pFC3509

C3506.022uF

68nH

7.66nH

L3504

L3513

47pF

C3512

VHF PA

100R3544

UNSW_LPLUS_3_PA

0102726B11

UNSWB_LPLUS_2_PA

RESET_1_PA

33pF

330pF

C3503

C3501

300R3503R3501

18

300

R350216

RFIN

11 G2

6RFOUT1RFOUT2 7

1VCNTRL

NC

310

NC

415

GN

D1

4

GN

D2

5

GN

D3

12

GN

D4

13

2VG13VG2

U3501

NC

18

NC

29

5V_2_PA

UNSWB+

09Z67

16V45

15VG

6V

L19

VLI

M

17V

SH

DATA_2_PA

23R

X

32 T1

2T

2

30 TEMP

V1

20

14V10

V2

18

V3

24

GN

D1

8

GND225

4IN

T

OVI3111

QQX

10

1R

F

21R

SC

I3 5

CJ

7C

L

26 CLK

12CQCQX

1328 DATA

9F168

09Z46

U3502

22A

NO

BPOS27

29 CEX

BEADL3519BEAD

CLK_2_PA

CSX_2_PA

CLK

UNSWB+

UNSWB+

R356233K

100

11.03nH

R3545

L3512

R354633K

330pF

R3512

C3518

120

.022uFC3504

C3526

C3

.022uF

L3503

10

68nH

12KR3561

.022uFC3565

3300pF3300pFC3562

C3563

R3563270K

C3561.022uF

C35271.5pF

L3521

7.66nH

C3514

470pF

C3515

220pF

3300pF

C3521

C3569.022uF

7.5KNU

R3569

R3570

100pF

10KNU

C35161uF

C3517

23.75nH

L3522

C3505

330pF

R3505

470

1uF

C3519

22pF

C3560

L3518

39nH

L351513.85nH

18nHL3511

C3544 R3542330pF 5.6K

C3547.022uF

R3541

NU6.8K

R3543

100

HEATSINK

1

H3501

.022uFC3543

330pFC3541 C3542

30pF

.022uF

C3513

C3502

33pF

TX_INJ

5.6nH

L3501

GND3

POS

VOUT

2

U3503

TX_INJ_1_PA

C39.1

10kR3548

330pFC3507

C3506.022uF

68nHL3502

VD114

NU

NU

NU

C3566100pF

R3565330KNU

100

R3513

ansmitter Schematic Diagram

Page 131: Motorola Gp328 338 Service Manual

Circu 6B-25

VHF

CircR

B501B503

B504

C320C320C320C320C320C320C320C321C321C321C321C321C321C321C321C322C322C322C322C322C322C322C322C322C322C323C323C323C323C323C323C323C323C324C324C324C324C324C327C327C327C327C327C327

pF

pF

pF

pF

pFFF

uF

FpF

pFpFpFpF

F, 10%

0pF0pF

0pF

Description

C3721 2113743E20 0.10uF, 10%C3722 2113743E20 0.10uF, 10%C3724 2311049A08 1uFC3726 2113743N24 8.2pFC3727 2113743N50 100pFC3731 2113743L41 10000pFC3732 2113743L41 10000pFC3733 2104993J02 2.2uFC3734 2113743L41 10000pFC3742 2113743L01 220pFC3743 2113743L01 220pFC3744 2113743L01 220pFC3745 2113743L01 220pFC3746 2113743L01 220pFC3752 2113743L17 1000pFC3753 2311049A56 4.7uF, 20%, 10VC3754 2113743M24 100000pFC3755 2104993J02 2.2uFC3761 2113743N44 56pFC3762 2113740F63 330pFC3763 2113743N08 1.6pFC3801 2113743N18 4.7pFC3803 2113743L17 1000pFC3804 2113743E20 0.10uF, 10%C3805 2113743N18 4.7pFC3806 2113743N50 100pFC3808 2113743N30 15pFC3809 2113743N36 27pFC3811 2113743M24 100000pFC3812 2113743M24 100000pFC3813 2113743L41 10000pFC3815 2113743L17 1000pFC3816 2113743N22 6.8pFC3818 2113743E07 0.022uFC3821 2113743L41 10000pFC3822 2113743L17 1000pFC3823 2113743L41 10000pFC3824 2113743N44 56pFC3825 2113743N30 15pFC3826 2113743N18 4.7pFC3827 2113743E07 0.022uFC3828 2185895Z01 0.01uFC3829 2185895Z01 0.01uFC3830 2113743N46 68pFC3832 2113743L17 1000pFC3833 2113743N18 4.7pFC3834 2113743N44 56pFC3835 2113743N22 6.8pFC3836 2113743N30 15pFC3842 2113743L17 1000pFC400 2113743L41 10000pF

CircuitRef

MotorolaPart No. Description

http

://w

ww.m

yrad

io16

8.na

me

it Board/Schematic Diagrams and Parts List

Radio Parts List

uitef

MotorolaPart No. Description

0986237A02 Connector, Contact Battery3980502Z01 Backup Contact, B+ (not used

in GP328)3980501Z01 Backup Contact, B- (not used

in GP328)0 2113743N31 16pF3 2113743N50 100pF4 2113743L41 10000pF5 2113928N01 0.1uF6 2113743L41 10000pF7 2113743N10 2.2pF9 2311049A07 1uF0 2113743L17 1000pF1 2311049A56 4.7uF, 20%, 10V2 2311049A57 10uF3 2311049A56 4.7uF, 20%, 10V4 2113928N01 0.1uF5 2113743N26 10pF8 2311049A56 4.7uF, 20%, 10V9 2113928N01 0.1uF0 2113743N26 10pF1 2113743L41 10000pF2 2113928N01 0.1uF3 2113928N01 0.1uF4 2113928N01 0.1uF5 2113928N01 0.1uF6 2113928N01 0.1uF7 2113743L41 10000pF8 2113743L41 10000pF9 2113743N50 100pF0 2113740F51 100pF1 2180478Z20 1uF2 2180478Z20 1uF3 2180478Z20 1uF4 2180478Z20 1uF5 2113743A23 0.22uF8 2113743A24 0.33uF9 2113743E07 0.022uF0 2113743A23 0.22uF1 2113743L19 1200pF2 2109720D14 0.1uF3 2113743E07 0.022uF4 2113743L41 10000pF0 2113743E07 0.022uF1 2113743L05 330pF2 2113743N18 4.7pF3 2113743N26 10pF4 2113743N38 33pF5 2113743N44 56pF

C3276 2113743N42 47pFC3277 2113743N48 82pFC3278 2113743E07 0.022uFC3279 2311049A40 2.2uFC3280 2113743L41 10000pFC3301 2113743N20 5.6pFC3302 2113743N54 150pFC3303 2113743N30 15pFC3304 2113743N54 150pFC3306 2113928N01 0.1uFC3307 2113743N50 100pFC3308 2113743L05 330pFC3309 2113928N01 0.1uFC3311 2113743N54 150pFC3312 2113743N31 16pFC3313 2113743N54 150pFC3315 2113743N26 10pFC3316 2113743N14 3.3pFC3317 2113743N40 39pFC3318 2113743M08 22000pFC3320 2113743N48 82pFC3321 2113743L05 330pFC3322 2113743N50 100pFC3323 2113743N50 100pFC3324 2113743N38 33pFC3325 2113743L17 1000pFC3327 2113743L05 330pFC3329 2113743L05 330pFC3330 2113743N50 100pFC3331 2113743N50 100pFC3332 2113743N40 39pFC3334 2113743N33 20pFC3335 2113743N34 22pFC3336 2311049A18 10uFC3337 2113743M08 22000pFC3338 2113743L09 470pFC3339 2113743N26 10pFC3501 2113743L05 330pFC3502 2113743N38 33pFC3503 2113743N38 33pFC3504 2113743M08 22000pFC3505 2113743N38 33pFC3508 2113743M08 22000pFC3509 2113743L05 330pFC3512 2113740F43 47pFC3513 2113740F38 30pFC3514 2113740F67 470pFC3515 2113743L29 3300pFC3516 2311049A08 1uFC3517 2113740F51 100pFC3518 2113740F63 330pF

CircuitRef

MotorolaPart No. Description

C3519 2113740F35 22pFC3521 2111078B51 220pFC3523 2111078B44 120pFC3524 2113740F33 18pFC3525 2113740F27 10pFC3526 2113743M08 22000C3528 2113740F26 9.1pFC3531 2113740F34 20pFC3532 2113740F47 68pFC3533 2113740F24 7.5pFC3534 2113740F19 4.7pFC3535 2113740F37 27pFC3536 2113740F31 15pFC3537 2113740F33 18pFC3539 2113740F29 12pFC3541 2113743M08 22000C3542 2113743L05 330pFC3543 2113743M08 22000C3544 2113743L05 330pFC3546 2113743L05 330pFC3547 2113743M08 22000C3550 2113743N23 7.5pFC3551 2113743N46 68pFC3552 2113743N44 56pFC3560 2311049A07 1uFC3561 2113743M08 22000C3562 2113743L29 3300pC3563 2113743L29 3300pC3564 2113743L01 220pFC3565 2113743E07 0.022C3566 2113743N50 100pFC3567 2113743L05 330pFC3568 2113743L29 3300pC3569 2113743M08 22000C3570 2113743L05 330pFC3571 2113743L09 470pFC3701 2113743L41 10000C3702 2113743L41 10000C3703 2113743L41 10000C3704 2113743L41 10000C3705 2113743E20 0.10uC3706 2311049J11 4.7uFC3707 2113743N34 22pFC3708 2113743M24 10000C3709 2113743M24 10000C3710 2104993J02 2.2uFC3711 2311049A69 10uFC3712 2113743M24 10000C3713 2311049A09 2.2uFC3714 2311049J11 4.7uFC3715 2113743L09 470pF

CircuitRef

MotorolaPart No.

Page 132: Motorola Gp328 338 Service Manual

6B-26 Circuit Board/Schematic Diagrams and Parts List

C401C402C403C407C408C409C410C411C414C415C416C419C420C421C422C423C424C425C426C427C428C429C430C431C433C434C435C436C437C440C441C442C443C444C445C446C447C448C449C451C452C453C456C458C459C463C466C467C471C472C473

CircuiRef

eadeadeadeadeadeadeadeadeadead

e clock oscillator Xtalin GP328)

eader

nutnnectornnector

ead

escription

L3731 2462587Q20 2200nHL3801 2462587V34 100nHL3809 2462587V27 27nHL3811 2462587V34 100nHL3812 2462587V34 100nHL3813 2462587Q47 1000nHL3816 2462587V34 100nHL3821 2462587N50 56nHL3822 2462587N49 47nHL3823 2462587N49 47nHL3824 2462587N68 1000nHL3825 2462587V34 100nHL3826 2462587N68 1000nHL3831 2462587N50 56nHL3832 2462587N51 68nHL3833 2462587N50 56nHL3834 2462587N68 1000nHL400 2462587Q42 390nHL401 2462587Q42 390nHL410 2462587Q42 390nHL411 2462587Q42 390nHL505 2462587Q42 390nHPB501 4080523Z01 Tactile, PushbuttonPB502 4080523Z01 Tactile, PushbuttonPB503 4080523Z01 Tactile, PushbuttonPB504 4080523Z01 Tactile, PushbuttonPB505 4080523Z01 Tactile, PushbuttonQ3200 4813827A07 NPN TransistorQ3201 4880214G02 NPN TransistorQ3202 4880214G02 NPN TransistorQ3270 4805218N63 RF TransistorQ3301 4880214G02 NPN TransistorQ3302 4813827A07 NPN TransistorQ3501 4802245J55 RF Power AmplifierQ3561 4813824A17 PNP TransistorQ3721 4802245J50 Dual NPN/PNP TransistorQ3801 4813827A07 NPN TransistorQ400 4809579E18 Mosfet P-chanQ403 4880214G02 NPN TransistorQ405 4802245J54 Dual NPN TransistorQ410 4802245J54 Dual NPN TransistorQ416 4809579E18 Mosfet P-chan (not used in

GP328)Q417 4802245J50 Dual NPN/PNP TransistorQ502 5180159R01 Dual NPN TransistorQ505 4880214G02 NPN TransistorR3200 0662057M54 150R3201 0662057M82 2200R3202 0662057M90 4700R3203 0662057M98 10kR3204 0662057M26 10

CircuitRef

MotorolaPart No. Description

http

://w

ww.m

yrad

io16

8.na

me

2113743M24 100000pF2113743M24 100000pF2113743G24 2.2uF2113928N01 0.1uF2113743N50 100pF2113743M24 100000pF2113928N01 0.1uF2113743M24 100000pF2113743M24 100000pF2185895Z01 0.01uF2113928N01 0.1uF2113743L41 10000pF2113743L41 10000pF2113928N01 0.1uF2113743M24 100000pF2113743N50 100pF2311049A59 10uF2113743M24 100000pF2113743N50 100pF2113743N50 100pF2113743M24 100000pF2113743M24 100000pF2113928N01 0.1uF2113743N50 100pF2113743L41 10000pF2113928N01 0.1uF (not used in GP328)2113743M24 100000pF2113743N34 22pF (not used in GP328)2113743N34 22pF (not used in GP328)2113743G26 4.7uF2113743L09 470pF2113743E20 0.10uF, 10%2113928N01 0.1uF2113743N50 100pF2113743L09 470pF2113743L09 470pF2113928N01 0.1uF2113928N01 0.1uF2113743N50 100pF2113743M08 22000pF2113743B29 1uF2113743N50 100pF2113743N50 100pF2113743N50 100pF2113743N50 100pF2113743N50 100pF2113743N50 100pF2113928N01 0.1uF2113743L09 470pF2113743L09 470pF2113743L09 470pF

t MotorolaPart No. Description

C474 2113743L41 10000pFC475 2113743H14 10uFC476 2113928D08 10uFC477 2113743L17 1000pFC478 2113743L17 1000pFC479 2113928N01 0.1uFC480 2113743G26 4.7uFC481 2113928N01 0.1uFC482 2113928N01 0.1uFC483 2113743L09 470pFC484 2113743L09 470pFC490 2113743L09 470pFC491 2113743L09 470pFC492 2113743L09 470pFC493 2113743N50 100pFC494 2113743N50 100pFC495 2113743L09 470pFC496 2113743L09 470pFC497 2113743L09 470pFC502 2311049A05 0.47uFC503 2113743N50 100pFC505 2113743N50 100pFC511 2113743N50 100pFC512 2113743N50 100pFC513 2113743N50 100pFC514 2113743N50 100pFC520 2113743L41 10000pFC521 2113743L41 10000pFC522 2113743L41 10000pFC523 2113743L41 10000pFC535 2113743L17 1000pFCR3301 4802245J42 Ring Quad diodeCR3302 4805129M96 Dual Bonds Pin Diode, RH

ReeledCR3303 4880154K03 Dual common anode-cathode

diodeCR411 4802245J47 Schottky diodeCR412 4802245J47 Schottky diodeCR413 4802245J47 Schottky diodeCR440 4813833C02 Dual Diode Common CathodeCR501 4880107R01 RectifierCR503 4805729G49 Red/Yellow LEDD3270 4862824C01 VaractorD3301 4802081B58 Dual DiodeD3302 4802081B58 Dual DiodeD3521 4880973Z02 Pin diodeD3551 4880973Z02 Pin diodeD3701 4802233J09 Triple diodeD3702 4802233J09 Triple diodeD3761 4862824C03 VaractorD3821 4805649Q13 Varactor

CircuitRef

MotorolaPart No. Description

D3831 4805649Q13 VaractorD3832 4862824C01 VaractorE400 2480640Z01 Ferrite bE401 2480640Z01 Ferrite bE402 2480640Z01 Ferrite bE403 2480640Z01 Ferrite bE404 2480640Z01 Ferrite bE405 2480640Z01 Ferrite bE406 2480640Z01 Ferrite bE407 2480640Z01 Ferrite bE408 2480640Z01 Ferrite bE409 2480640Z01 Ferrite bF501 6580542Z01 3A FuseFL401 4870368G02 Real Tim

(not usedH3501 2680499Z01 Heat sprJ3501 0985613Z01 RF JackJ3502 0280519Z02 AntennaJ400 0905505Y04 40-pin coJ403 0905505Y02 20-pin coL3200 2462587N68 1000nHL3202 2462587N68 1000nHL3221 2462587N68 1000nHL3270 2462587T15 100nHL3271 2462587Q20 2200nHL3301 2462587T35 12nHL3303 2462587T35 12nHL3304 2462587T23 470nHL3305 2462587T35 12nHL3306 2462587T35 12nHL3308 2462587T34 10nHL3309 2462587N55 150nHL3312 2462587V28 33nHL3501 2413926H09 5.6nHL3503 2462587V32 68nHL3504 2462587N51 68nHL3511 2462587N44 18nHL3512 2479990B01 11.03nHL3513 2479990A02 7.66nHL3515 2479990C03 13.85nHL3518 2462587N48 39nHL3519 2484657R01 Ferrite bL3521 2479990A02 7.66nHL3522 2479990E01 23.75nHL3523 2462587N68 1000nHL3531 2479990N01 43.67nHL3532 2479990N01 43.67nHL3538 2479990M01 30.54nHL3551 2479990N01 43.67nHL3552 2479990A02 7.66nHL3701 2462587Q42 390nH

CircuitRef

MotorolaPart No. D

Page 133: Motorola Gp328 338 Service Manual

Circu 6B-27

R320R320R320R320R320R321R321R321R321R321R321R322R322R322R322R322R327R327R327R327R327R327R327R330R330R330R330R330R330R330R331R331R331R331R331R331R331R331R331R332R332R332R332R350R350R350R350R351R351R351R354

CircR

used in GP328)not used in GP328)

not used in GP328)

ms, 1W

ot used in GP 328)ot used in GP328)

Description

R506 0662057N15 47kRT400 0680590Z01 THERMISTOR_33KS501 4080710Z01 Frequency SwitchS502 1880619Z02 Volume SwitchSH3201 2602023X08 Rx Backend Top ShieldSH3202 2686081B02 LVZIF shieldsSH3203 2686081B03 45.1MHz Xtal Filter ShieldSH3301 2686081B01 Rx Frontend Bottom ShieldSH3302 2686081B05 Mixer ShieldSH3303 2686081B06 Rx Frontend ShieldSH3501 2686081B03 Harmonic Filter ShieldSH3502 2686081B04 PA driver ShieldSH3701 2680511Z01 Synthesizer top shieldSH3702 2680511Z01 Synthesizer bottom shieldSH3801 2680513Z01 VCO Top ShieldSH3802 2680514Z01 VCO Bottom ShieldSH400 2680505Z01 Controller Memory ShieldSH401 2680506Z01 Controller on-off shieldSH402 2680515Z01 Controller Microprocessor

shieldSH403 2680516Z01 Controller Asfic_Cmp/Audio

PA shieldT3301 2580541Z02 Balun transformerT3302 2580541Z02 Balun transformerU3201 5102463J58 3.3V RegulatorU3220 5109632D83 LVZIF ICU3501 5105109Z67 LDMOS Driver ICU3502 5185765B28 PCICU3503 5185963A15 Temperature sensorU3701 5185963A27 LVFRACN Synthesizer ICU3711 5105739X05 5V RegulatorU3801 5105750U54 VCO BUFFER ICU400 5102463J40 3.3V RegulatorU404 5185963A53 ASFIC_CMPU406 *5102463J59 128K X 8 FLASH ROMU407 *5102463J64 16K X 8 EEPROMU409 5102226J56 Microprocessor ICU410 5102463J57 3.3V Regulator (not used in

GP328)U420 5102463J44 Audio PAVR432 4805656W08 5.6V Zener diodeVR433 4805656W08 5.6V Zener diodeVR434 4802245J73 ZENER DIODE - 6.8VVR439 4880140L17 ZENER DIODE - 12VVR447 4802245J74 ZENER DIODE - 10VVR448 4802245J74 ZENER DIODE - 10VVR449 4802245J74 ZENER DIODE - 10VVR450 4802245J75 ZENER DIODE - 12VVR501 4813830A18 ZENER DIODE - 6.8VVR506 4802245J73 ZENER DIODE - 6.8VY3200 9186153B01 Crystal Filter

CircuitRef

MotorolaPart No. Description

http

://w

ww.m

yrad

io16

8.na

me

it Board/Schematic Diagrams and Parts List

5 0662057M74 10006 0662057N23 100k7 0662057N13 39k8 0662057M50 1009 0662057M74 10000 0662057M82 22001 0662057M82 22002 0662057M90 47003 0662057M82 22004 0662057M34 229 0662057M50 1000 0662057M90 47001 0662057M50 1004 0662057M26 105 0662057M74 10006 0662057M26 100 0662057M74 10001 0662057M42 472 0662057N15 47k3 0662057N15 47k4 0662057M83 24005 0662057M74 10006 0662057N30 200k3 0662057N23 100k4 0662057N23 100k5 0662057N19 68k6 0662057M82 22007 0662057N11 33k8 0662057M78 15009 0662057M92 56000 0662057M98 10k1 0662057M26 102 0662057M38 333 0662057M34 224 0662057M26 105 0662057M62 3306 0662057M66 4707 0662057N23 100k8 0662057M66 4701 0662057M54 1502 0662057M58 2203 0662057M32 184 0662057M58 2201 0662057M61 3002 0662057M32 183 0662057M61 3005 0662057M62 3302 0662057A27 1203 0662057A25 1009 0680539Z01 0.12 0662057M92 5600

uitef

MotorolaPart No. Description

R3543 0662057M50 100R3544 0662057A25 100R3545 0662057A25 100R3546 0662057N11 33kR3547 0662057N01 12kR3548 0662057M95 7500R3551 0662057M40 39R3561 0662057N01 12kR3562 0662057N11 33kR3563 0662057N33 270kR3564 0662057N35 330kR3569 0662057M92 5600R3570 0662057M98 10kR3571 0662057A27 120R3572 0662057A27 120R3573 0662057A27 120R3701 0662057M50 100R3703 0662057M54 150R3704 0662057M54 150R3705 0662057N11 33kR3721 0662057M66 470R3722 0662057M74 1000R3723 0662057M50 100R3727 0662057N23 100kR3741 0662057M50 100R3751 0662057N30 200kR3752 0662057N35 330kR3761 0662057N15 47kR3802 0662057M50 100R3803 0662057M58 220R3804 0662057M98 10kR3805 0662057N08 24kR3806 0662057M34 22R3808 0662057M26 10R3811 0662057M50 100R3816 0662057M74 1000R3817 0662057M01 0R3821 0662057M58 220R3822 0662057M42 47R3823 0662057N11 33kR3824 0662057N07 22kR3825 0662057M38 33R3826 0662057M32 18R3828 0662057M50 100R3829 0662057M01 0R3831 0662057M98 10kR3832 0662057N01 12kR3833 0662057M58 220R3834 0662057M42 47R3835 0662057N15 47kR3836 0662057M98 10k

CircuitRef

MotorolaPart No. Description

R400 0662057N15 47kR401 0662057M01 0R405 0662057M01 0R406 0662057N20 75kR407 0662057N19 68kR409 0662057M98 10kR410 0662057N23 100kR411 0662057M98 10kR413 0662057M01 0R414 0662057V34 180kR415 0662057V26 91kR416 0662057M90 4700R418 0662057M01 0R419 0662057M67 0 (notR420 0662057B46 10M (R421 0662057M81 2000R423 0662057N21 82kR424 0662057N12 36kR425 0662057N10 30kR426 0662057N35 330k (R427 0662057M84 2700R428 0662057M10 2.2R429 0662057M98 10kR431 0662057N39 470kR432 0662057N16 51kR434 0662057M62 330R435 0662057M81 2000R436 0662057M01 0R445 0662057N08 24kR446 0662057N22 91kR447 0662057N38 430kR448 0662057N06 20kR449 0662057N08 24kR450 0683962T45 68 ohR457 0662057M98 10kR460 0662057M90 4700R461 0662057M56 180 (nR462 0662057M98 10k (nR463 0662057M61 300R471 0662057N06 20kR472 0662057M93 6200R473 0662057M26 10R475 0662057M01 0R476 0662057N35 330kR477 0662057M74 1000R478 0662057M98 10kR481 0662057N08 24kR492 0662057M01 0R501 0662057M70 680R502 0662057M56 180R505 0662057M98 10k

CircuitRef

MotorolaPart No.

Page 134: Motorola Gp328 338 Service Manual

6B-28 Circuit Board/Schematic Diagrams and Parts List

Y3761

CircuiRef

http

://w

ww.m

yrad

io16

8.na

me

* Motorola Depot Servicing only

4802245J49 16.8MHz Xtal Oscillator

5480678Z01 PCB Barcode label8486062B12 VHF Main PC Board

t MotorolaPart No. Description

Page 135: Motorola Gp328 338 Service Manual

Circu 6B-29

8.0

C3204

C3208

10

C3207

02

6

202

2

3209

1

3318

29

C33

19

R33

17

C3330C3331C3332

D3302

C3312 C3311C3313C3314

L3305L3306

C3306 C3309

C3307

C3338 C3308

C3327

C3310

CR3303

L3304Q3302R3310

R3309

R3311

R3313

R3308 R3312

R3316

SH3303

PB504

C3214C3209

C3212

C3215

Q3202

R3215

R3218

R3225

R3213

R3214

U3201

C3213

C32

80

C3225

C32

73

C3270

C3278

C3271

C32

72

C3274

C32

75

C32

76

C3277

C3279

D3270L3270

L3271

Q3270

R3272

R32

73

R3226

R32

70

R3275

R32

71

R3274

R32

76

SH3201

C521PB501

VR440

C505

C512 C513

C502

Q502

Q505

R506

R505

VR501

C520

C511 C514 CR5032

3 4

R502

R501

C3539L3538

PB505

C3537

C3552

C3524

C3525

C3528

C35

31

C3532

C3533

C3534

C3535

C3536

C3550C3551

D3521

D3551

L3552

L3531

L3532

L3551

R3551

SH

3501

515

2

C3518

3

3501

1

C3519

C3521 C3523

C3527

L3521

L3518

L3522R3513

VHF (136-174MHz) Main Board Top Side PCB No. 8486062B16

http

://w

ww.m

yrad

io16

8.na

me

it Board/Schematic Diagrams and Parts List

Circuit Board/Schematic Diagrams and Parts List

40

J400

1

U405

17

8 21

22

C425C426

C428C427

C443

L401

R435

TP401TP402

TP410

C444 RT400SH400

C424

U406

116

1732

8

5 4

1

U407

C423 E407

E408

E409R410

R418

R437

R492

R429C429

R408

R478

R428

C473

VR447

VR449

C471C472

21

1

J403

20

22

R450

Q41734

C493

C494

C441

C490

C491

C492

C495

C496

C497

R477

CR413

L400

R421

TP405 TP406

VR434VR450

C467Q405

3

R416 R481

4

C480

C482

Q403

R452

CR440

R453R454

R455 R456R448R447

R451

8

C400

C401

C403

CR412Q400

R401R402

R403

R405

R406

R407

R427

R476U400

5

4

C402

SH401TP415

C3832

C3842

C3833

C3835

D3832

D3821D3831

L3824L3834

L3831

R3835R3836

R3834R3833

C3828C3829

R3828

C3822

C3826

R3822R3823 R3821

C3834C3836

L3832L3825

L3833 L3823

SH3801

C3824C3825C3830

L3821

L3822

C3712C3741

C3742

C3713R3701R3741

C3743

C3744

C3745

C3746C3714Q3721

U3711

C3754

C3721

C3722

C3752

C3753

C3724

C3710

34

R3752

R3722

R3723

R3751 R3721

SH3701

C3706

Y3761

1 3

46

B503

C522

C523

PB502PB503

C432 TP3702

C3715 C3711

B504

L3200TP3701

C3200C3201C3202

R3211

C3203

L3201

R3203

Y3200

C3206

C32

L32

Q3201

Q3200

R320

R3

R321

R3204

R3205

R

R320

R3210

R3207

R3208

SH3203

C3205 R3200

C3335

C3320

C3334

L3309

L3312

R3318

SH3302

T3302

34

6

TP3301 C

C33

R3321

R3322

R3323

T3301

3 4

6

VR444

C3517

C3512

C3513

C3514L3504

L3511 L3512

L3513R3506

R3507

L3

U3501

9

8

16

1

C35

41

C35

43

C35

42C

3544

R35

43

R35

41

C3502C3503L3501

R3505

R3542

R351R3544

R3545

C3504C3501

C3505

R3501

R3503R3502

C35

47

C35

46L3503

R35

46

R35

47

R3548

SH3502

2

Q

Page 136: Motorola Gp328 338 Service Manual

6B-30 Circuit Board/Schematic Diagrams and Parts List

4

2

3762

C3751

C3763D3761

R3761R3760

VR442

C433

C431

FL401

R414

R415

R463

C436C437

R420R426

3

SH

402

51

1

U409

76

26

CR411

C434

C435Q416

R462R419

R460

R461

U410

C453

C456

L410

L411

R409R411R457

R432

C458C459

C466

E400

E404

E406

C463

E401

E402

E403

C449

C4020C4021

M400

E405

13

1

C3701

C3703

D3701

C3702

3703

3704

C3705

R3702C3708

C3725

R3726

D3702

1

C3734

C3733 L3731

R3705

C3704

C3709

C37

07

02

U3801

20

11

R3812

C3818R3817818

C3816

L3816

R3831

R3816

R3832

L3813

C3815

R3829

R3830C3827

C41

9

C42

0

C42

1

C481

R400R41

3

C40

7C

479

R475

R42

5

R44

5

R449

C409

C410

C408

13

2537

1

U404

C474

C42

2

C416 C44

7C

448

C475

C477R498R49

9

R42

3

R424

R431

R472

U420

10

20

1

11

C440

C41

1C44

6

R436

R43

4

C450

C476C452

C478

Q41034

R471

C451

C414C430

C415 VR460

SH403

M401

C442

C445

C483

C484

R473

VR448

VR432

VR433

VHF (1

http

://w

ww.m

yrad

io16

8.na

me

2

S502

3 5

4

M301

1325

37 1

U3220

C3240

C3236

C3224C3237

C3242R3224

R3223

C3235

C3231C3232C3233 C3234

C3241 C3223

SH3202

C3227

C3244

C3219

C3211

C3230

C3243

R3222

R3219

C3221

C3222

C3228

C3218C3220

L3221

R3220

R3221C3238

C3226

C3229C3239

SH3301

4

8

S501

2

C3322

C33

23

C3305

C33

21C

3324

C3304C3303

D3301

L3303

R3303

R3307

C3301C3302

L3301

C3339

C33

15

C33

16

R3305R3304

R3301 RT3301

C3326

C3325

CR3302

Q3301

R33

15

R33

14

R3306 R3324

C3337

C3317

CR3301

L3308

R3319R3320

C3509

L3519

R3562C3515

C3516

C3564

R3519

VR3501C3566

C3508

Q3561U3503

C3567

R3561R3563

C3560

25

9 17

U3502

1

C3571

C3568

C3561

C3565

C3562

C3563

R3564

R3565

R3570

R3569H3501

C3570

M100

C3526 C3569

L3523

R3566

R3571R3572R3573TP35021

J3501

4

3

2

J3502

1

2

3

B501

M101

C535

3

Y

C3735

CR501

L505

R3763

VR441

VR506

VR439

SH3702

25

U3701

37

R

RC373

C3732

C3761

C3762

L3701

R3762

C3727

C3755

C3726

R3727

C503F501

C3336

SH38

C3813C3823

C3803C3801 C3805

Q3801

R3804

R3808R3807

R3825

R3801R3803

R3826

L3801

10

1

C3821C3804

C3802

C3808

L3826

R3802

C3812R3

M300

C38

11

C38

10

C38

09

L3811

L3812L3809

R3805

R38

11

R38

06

R38

2436-174MHz) Main Board Bottom Side PCB No. 8486062B16

Page 137: Motorola Gp328 338 Service Manual

Circu 6B-31

ME

SB1

EMER

B501

A

.01uFC520

.01uFC521

12

SWITCHPB505

VR440

NU6.8V

PB501

12

SWITCH

PB504

12

SWITCH

NU6.8VVR444

PTT

PB502

12

SWITCH

VR441

NU6.8V C522

.01uF

SB2

PB503

12

SWITCH

NU6.8VVR442

C523.01uF

SB3

M100

M101

VHF Controls And Switches Schematic Diagram

http

://w

ww.m

yrad

io16

8.na

me

it Board/Schematic Diagrams and Parts List

VOL

CH_SWB+

Vdda

6.8VVR501

HIG

HTAB1

6

TAB27

2

mgc_comps

4

1

LOW

5

3

S502

C5020.47uF

C505100pF

UNSWB+

1000pF1000pFC535

100pFC503

CR501VR43910V

21

24VF501

BATT_CODE

LI_ION

VR5066.8V

L505390nH

DAT

NEG

POS

B503

B504

SWB+Vdda

4

347K

R506

R50510K

Q505

5

1

6

2

Q502

switch

RED_LED

R501680680

CR503

2 4

1 3

R502180180

RTA2

RTA0RTA1

RTA3

S501SWITCH

GN

D1

PC0

PC1

PC2 PC3

C0

C1

GN

D

1

2

4 8

C0

C1

97

100pFC511 C512

100pFC513100pF 100pF

C514

o

switch

GREEN_LED

Page 138: Motorola Gp328 338 Service Manual

6B-32 Circuit Board/Schematic Diagrams and Parts List

pF315

16pF

ripline

C33192.7pFNU

C3318.022uF

C333910pF10pF

L330810nH

39pFC3317

4

6

3

1

2

T3301

82pFC3320

18R3323

IF_1_FE

150nH

150

L3309

R3321 R3322220

IF

R33191KNU

1

CR3301

2

34

R33201KNU

RF BALUN

XFMR

IF BALUN

4

6 T3302

XFMR

20pFC3334

22pFC3335

33nHL3312

470R3318

TP3301

1

SHIELDSH3303SH3302

SHIELDSH3301

SHIELD

111

3

1

2

ZMY0130481-A

VHF R

http

://w

ww.m

yrad

io16

8.na

me

UNSWB_PLUS_1_RX

UNSWB+

10uFC3336

UNSWB_PLUS_2_RX

R5

C3337.022uF

C33090.1uF

R5_2_FE

470R3316

R5_3_FE

RX_INRX_IN_1_FE

L330112nH

C3302150pF

C33015.6pF

L330312nH

C330315pF

D3301

150pFC3304

R330733K

C33052.2pFNU

CR3303

R33081.5K

22R3313

330pFC3308

10KR3310

L3304470nH

C3307100pF

0.1uFC3306

R3315330

Q3302

C3338470pF

R33123310

R3311

R33095.6K

SMBV1032CR3302

12nHL3305

150pFC3311

C33101pFNU

10R3314

6.8pFNU

C3314

D3302

150pFC3313

10

12nH

C3

L3306

C331216pF

C333.3

St

C3329330pF

C3331100pF

C3330100pF

C333239pF

100KR3317

DACRx_1_FE

M301

M300

RX_INJ_1_FE

DACRx

RX_INJ

C3321330pF 100pF

C3322 C3323100pF 33pF

C3324

R3303100K

Stripline

NU33KR3301

RT3301

NU33.0K

R330568K

C33260.1uFNU

R3304100K

Q3301

220R3324

R33062.2K

C33251000pF 330pF

C3327

Stripline

RSSI

DUMMY

eceiver Front End Schematic Diagram

Page 139: Motorola Gp328 338 Service Manual

Circu 6B-33

48 43 424647 41 38 3744 40 3945T

ES

TA

VAG_REF

PR

E_A

GC

CS

ROSE_VCCROSE_VSS

TUT

GR

EE

N_V

SS

IOU

T

MIX

_BY

P

MIX

_IN

MLP

D_C

R

PHASE_LOCK

PR

EA

MP

_OU

T

DEMOD_OUT

FR

EF

GN

D

CC

GO

LD_V

SS

GR

EE

N_V

CC

C3P

CE

XC

LK

CO

L

DA

TA

DEMOD_HF

BLU

E_V

SS

BR

OW

N_V

CC

BR

P_O

FF

C1P

C2P

BLU

E_V

CC

U3220mgc_comps

C32341uF

32VAG

25

3029

LIM31

2627

36C4M

C4P

28

33C1M

34C2M

35C3M

1615 24212014 191817 22 23

C32400.22uF

Vdd_FILTERED

0.1uFC3225

0pF3229

0

20

1

C3239.022uF

DEMOD

SQ_OUT

Vdd_FILTEREDC32240.1uF0.22uF

C3235

C3237

1K

100pF

NUR3223

R322410 C3236

.01uF

C32331uF

C32321uF

C32311uF

DEMOD_1_ZIF

0.1uFC3223

C32420.1uF

1200pFC3241

C3227.01uF

CLK_3_ZIF

DATA_3_ZIF

16_8MHz_3_ZIF

LVZIF_SEL_1_ZIF

Vdd_FILTERED

SH3202SHIELD

1

SHIELD

1 2 3

SH3203

CLK

LVZ

IF_S

EL

DA

TA

16.8

MH

z

327822uF

ZMY0130481-B

VHF Receiver Back End Schematic Diagram

http

://w

ww.m

yrad

io16

8.na

me

it Board/Schematic Diagrams and Parts List

R32091K

C32080.1uF

NU

R3207

Q3201

39K

100KR3206

R3208100

RSSI

XTALY3200

0.1uF.01uFC3205C3204

2.2KR3201

R5

150R3200

R5_

3_Z

IF

1uHL3200

IF_1_ZIF

C320016pF

C32011.5pFNU

1G

ND

GN

D1

2 4G

ND

25

GN

D3

3OUT6 IN

L32011uHNU

C3202

NU12pF 10K

R32032.2KR3211

100pFC3203

4.7KR3202

2.2KR3210

MMBR941Q3200

10R3204

L32021uH

R32124.7K

C32101000pF

1KR3205C3206

.01uFC32072.2pF

100pFC3230

4.7uFC3218

.01uFC3221

R3219100

0.1uFC3222C3219

0.1uF

5V Vdd_FILTERED

.022uFC3243

C3244.01uF

R3222100K

C32380.33uF

TESTD

PRE_IN

RED_VCRED_VS

RSSI_FLRSSI_O

EMIT

EXTBS

GOLD_V

BASE

89

VPP

3

12

54

11

6

10

7AFC

12

13

Vdd_FILTERED

10C

C32210pF

4.7KR32

L3221uHC3228

.01uF

0.1uFC3226

R3221100

RSSI_1_ZIFRSSI

1uFC3209

RSSI_2_ZIF 2.2KR3213

RSSI

5V

VSF

5V_3_ZIF

VSF_3_ZIF

0.1uFC3214

R32251K

Q3202

5V

5V

IF

Vdd_FILTERED

10R3226

Vdd_FILTERED

(SOURCE)

SWB+SWB_PLUS_3_ZIF R3214

22

4V_3.3V_ZIF 0

NU

R3215

10pFC321510uF

C3212

31

2

54VOUT

LP2980

GN

D NCON_OFF*VIN

U3201

10

NU

R3218

4.7uFC3211

VddaVdda_3_ZIF

C32134.7uF

.022uFC3270 C3271

330pF

BFQ67W1

3

2

Q3270

C327433pF

C32724.7pF

10pFC3273

R32701K

C327556pF

47R3271

L3270100nH 200K

R327647KR3273

R327247K

13pfC3276

D3270

C327782pF

2.2uHL3271

C3280.01uF

2.2uFC3279

C.0

R32751K

2.4KR3274

SH3201SHIELD

1

Page 140: Motorola Gp328 338 Service Manual

6B-34 Circuit Board/Schematic Diagrams and Parts List

2.2uFC3713

53

SWB_PLUS_1_FN

C37120.1uF

SWB+

100KR3727

C37268.2pF

100pFC3727

PRESC_1_FN

2.2uFC3755

MODIN_1_FN

DATA_1_FN

CSX_1_FN

R3752330K

C37534.7uF

200KR3751

DATA

MODIN

C37521000pF

CSX

CLK_1_FN

220pFC3744 C3742

220pFC3745220pF

C3743220pF

CLK

5V

.01uFC3732.01uF

C3731R376000NU

1.6pFC3763

C37510.1uF

NU

4VCC

1V

CN

TL

GND

3O

UT

NU

OSC_16.8MHZ16.8MHz

VSFVSF_1_FN

PRESC

0.1uFC3754

VddaVdda_1_FN

L37312.2uH

C3734.01uF

C37332.2uF

47KR3761

1

1TP3702

18

2726

172931

32

4039

42

2135

30

10

98

7

FSEL

ASEFCAP

NC1NC2NC3

REIN

OMP

PASSVREF

SFIN

ODIN

IAS1IAS2

CEXCLK

ATA

ZMY0130483-A

VHF S

http

://w

ww.m

yrad

io16

8.na

me

TRB

SH3702SHIELD

SHIELD

1

SH3701SHIELD

SHIELD

1

VCO_MOD

R5

T5

VCTRL

VCO_MOD_1_FN

VCTRL_1_FN

T5_1_FN

R5_1_FN R5_2_FN

5V

4

1

3

Q3721

2

UMC5N

47K

47K

10K

47K

4.7uFC3714

4.7uFC3706C3705

0.1uF

5V5V_1_FN 5V_2_FN

(SOURCE)

R37221K

0.1uFC3721

470R3721

100R3723

C37220.1uF

C3724

TP37011

1uF

C3704.01uF

.01uFC3702

C3701.01uF

.01uFC3703

4

1 K1

2 K2

3 K3

D3701

A1 6A2 5A3

K22

K33

D3702

A16

A25

A34

K11

R37020

NU

C37090.1uFR3704

150

C370722pF

33KR3705

0.1uFC3708

R3703150

BIAS_ADJ

100R3701

470pFC3715 C3711

10uFL3701390nH

BIAS_ADJ_1_FN

2.2uFC3710

6ERR

1G

ND IN

2NR

4OUT

SD

U3711mgc_comps

C3746220pF

C37250.1uFNU

LOCK_1_FN

R372647KNU

LOCK

16_8MHz_1_FN100

R3741

C3741NU

56pF

16.8MHz

.01uFNU

C3735

100R3763

NU

R3762

NU2.2K

56pFC3761

330pFC3762

2

D376

GN

D1

GN

D1

4

OUT3

IN6

16.8MHz

44 33 622

24

38

15141211

28

37

4119

4543

4

3

46

4812

2516

TRB_1_FN

23

47 13 34 536 20

mgc_compsU3701

WARP

TEST2

RE

SFBS

SFOUT

TEST1

PD

_GN

D

P

PR

E_G

ND

DG

ND

IADAPT

INDMULT

IOUT

LOCK CCADAPTSW

AG

ND

VMULT1VMULT2VMULT3VMULT4

MODOUTFREFOUT

AUX4

AUX1AUX2AUX3

VBP

M

BB

D

VR

O

XTAL1XTAL2

VC

P

PR

E_V

DD

PD

_VD

D

DV

DD

AV

DD

ynthesizer Schematic Diagram

Page 141: Motorola Gp328 338 Service Manual

Circu 6B-35

L382156nH

C38264.7pF

C382515pF

3826uH

R382333K

C3827.022uF

_1_VCO

VCO_MOD

L383156nH

C383615pF

C38356.8pF

L383268nH

L383356nH

100KR3812

BIAS_ADJ_1_VCOBIAS_ADJ

NU

L38241uH

L382247nH

D3821

L3825100nH

68pFC3830

47nHL3823

C38290.1uF

0.1uFC3828

R3828100

VCTRL_1_VCOVCTRL

1uHL3834 C3842

1000pFD3831

VHF Voltage Controlled Oscillator Schematic Diagram

http

://w

ww.m

yrad

io16

8.na

me

it Board/Schematic Diagrams and Parts List

R5

R3802100

R5_1_VCO

0.1uFC3804

1KR3807

NU1K

L3801100nH

RX_INJ

Q3801

RX_INJ_1_VCO

C380222pF

NU220NU

R3801

C38014.7pF

0.1uFC3812L3811

100nH

100R3811

C381010pF

NU0.1uFC3811L3812

100nH

Vdda VSF

VSF_1_VCOVdda_3_VCO

R381700

L38131uH

0NU0R3818

C3818.022uF

TX_OUT

TX_SWITCH

RX_OUT

RX_SWITCH

PRESC_OUT VC

C_B

UF

FE

RS

VC

C_L

OG

IC

1418

U3801

10

13

8

7

12

23

19

1615

1

4

20

56

RX_IADJSUPER_FLTR

TRB_IN

TX_BASETX_EMITTER

TX_IADJ

COLL_RFIN

FLIP_IN

RX_BASERX_EMITTER

GN

D_B

UF

FE

RS

GN

D_F

LAG

GN

D_L

OG

IC

11 917

1010R3808 24K

R3805R380410K

R3803220

C38031000pF

R380622

C38054.7pF

100pFC3806

27nHL3809

15pFC3808

27pFC3809

TX_INJ_1_VCO

C38221000pFC3813

.01uF

47R3822R3821

220C382456pF

L1

R382533

R383110K

18R3826

.01uFC3821

.01uFC3823

R382422K

PRESC_1_VCO

1K100nHR3816L3816

C3816

PRESC

6.8pF

VSF

TX_INJ

T5 TRB

C38321000pF

R3833220

1000pFC3815

R3830

T5_1_VCO

0R3829 TRB_1_VCO

0

R383212K

47R3834

VCO_MOD47K

R3835VSF

R383610K

D3832

4.7pFC3833

56pFC3834

SHIELD

1

SHIELD

1

SH3802SH3801

Page 142: Motorola Gp328 338 Service Manual

6B-36 Circuit Board/Schematic Diagrams and Parts List

TX_ 18pFC3524

22uF

C35289.1pF

C352510pF

3526

0KNU

570

9 NUQ3561

UNSWB+

R3571

NU120

120R3572

120R3573

356922uF

L35231uH

D3521

43.67nHL3551

C353615pF

7.5pFC3533

C353268pF

43.67nHL3531

43.67nHL3532

C353527pF

C35344.7pF

20pFC3531 4

1

2

3

J3501RF_JACK

GND

18pFC3537

TAB55

1TAB1

2TAB2

3TAB3

4TAB4

ANTENNA_NUTJ3502

5.6pFC3539

30.54nHL3538

39R3551

56pFC3552

RX_IN_1_PA

RX_IN

C355168pF

D3551

7.66nHL3552

7.5pFC3550

HIELDH3502

2

VHF Tr

http

://w

ww.m

yrad

io16

8.na

me

DATA CLKCSXUNSWB+

CSX_2_PA

UNSWB_LPLUS_2_PA

UNSW_LPLUS_3_PA

CLK_2_PA

DATA_2_PA

C3566100pF

2

U3503

GND3

POS

VO

UT

12KR3561

R356233K

C3561.022uF

LM50C5185963A15

330pFC3501

300R3501 R3503

300

TX_INJ_1_PA 18R3502

INJ

C3504.022uF

33pFC35025.6nH

L3501

470R3505

330pFC3505

C350333pF

68nHL3503

.022uFC3508

330pFC3509

68nHL3504

330pFC3567

330KNU

R3565

220pFC3564

3300pFC3562

3300pFC3563

330KR3564

.022uFC3565

270KR3563

RFOUT21 VCNTRL14 VD1

2VG1

3VG2

12

GN

D4

13

8 NC19 NC2

10 NC315 NC4

16 RFIN RFOUT1 67

EP

17

11 G2

GN

D1

4

GN

D2

5

GN

D3

C65U3501

330pFC3544

100R3543

C3543.022uF

330pFC3542

5.6KR3542

.022uFC3541 R3541

NU6.8K

L351118nH

L351211.03nH

47pFC3512

30pFC3513

0R3507

R35060

L35137.66nH 470pF

C3514

100pFC3517

C35161uF

22pFC3519

100R3513

R3512

3300pFC3515

330pFC3518

L351839nH

120

D

G

S Q3501

HEATSINKH3501

C35271.5pF

NU

120pFC3523

L35217.66nH

220pFC3521

.0

23.75nHL3522

13.85nHL3515 VR3501

10V

C

Microstrio

100R3545

7.5KR3548

100R3544

BIAS_TUNING

330pFC3546 R3546

33K

12KR3547

.022uFC3547

TP3502

1

3300pFC3568

0R3566

R35190.1

BEADL3519

C3570

470pFC3571

RESET

RESET_1_PA 5V_2_PA

5V

BIAS_TUNING

330pF

UNSWB+UNSWB+

1R3

R356

NU5.6K

C.0

19 1720 1824 22 2123

14

1615

1110

1213

9

3031

26

28

25

32

27

29

621 7 843 5

TEMPRSET

CLK

DATA

GND2

ANO

BPOS

CEX

VL

T1

INT

RF

IN

CL

GN

D1

CI

CJ

VGV10

V45

QQX

CQCQX

F168

VLI

M

V5E

XT

VA

R1

VA

R2

VA

R3

NA

RS

RX

H99S-4U3502

C35601uF

1

SSSH3501

SHIELD

11 2 3

ansmitter Schematic Diagram

Page 143: Motorola Gp328 338 Service Manual

Circu 6B-37

VHF

CircR

B501B503

B504

C320C320C320C320C320C320C320C321C321C321C321C321C321C321C321C322C322C322C322C322C322C322C322C322C322C323C323C323C323C323C323C323C323C324C324C324C324C324C327C327C327C327C327C327

pF, +80/-20%

pF, +80/-20%

pF, +80/-20%

pF, +80/-20%

pF, +80/-20%FF

uF

FpF, +80/-20%

, 10%pF, 10%pF, 10%pF, 10%pF, 10%

F, 10%

10%10%

10%

, 10%F, 10%F, 10%

Description

C3724 2311049A08 1uFC3726 2113743N24 8.2pFC3727 2113743N50 100pFC3731 2113743L41 10000pF, 10%C3732 2113743L41 10000pF, 10%C3733 2104993J02 2.2uFC3734 2113743L41 10000pF, 10%C3742 2113743L01 220pFC3743 2113743L01 220pFC3744 2113743L01 220pFC3745 2113743L01 220pFC3746 2113743L01 220pFC3752 2113743L17 1000pF, 10%C3753 2311049A56 4.7uF, 20%, 10VC3754 2113928N01 0.1uF, 10%C3755 2104993J02 2.2uFC3761 2113743N44 56pFC3762 2113740F63 330pFC3763 2113743N08 1.6pFC3801 2113743N18 4.7pFC3803 2113743L17 1000pF, 10%C3804 2113743E20 0.10uF, 10%C3805 2113743N18 4.7pFC3806 2113743N50 100pFC3808 2113743N30 15pFC3809 2113743N36 27pFC3811 2113928N01 0.1uF, 10%C3812 2113928N01 0.1uF, 10%C3813 2113743L41 10000pF, 10%C3815 2113743L17 1000pF, 10%C3816 2113743N22 6.8pFC3818 2113743E07 0.022uFC3821 2113743L41 10000pF, 10%C3822 2113743L17 1000pF, 10%C3823 2113743L41 10000pF, 10%C3824 2113743N44 56pFC3825 2113743N30 15pFC3826 2113743N18 4.7pFC3827 2113743E07 0.022uFC3828 2185895Z01 0.01uF, 10%C3829 2185895Z01 0.01uF, 10%C3830 2113743N46 68pFC3832 2113743L17 1000pF, 10%C3833 2113743N18 4.7pFC3834 2113743N44 56pFC3835 2113743N22 6.8pFC3836 2113743N30 15pFC3842 2113743L17 1000pF, 10%C400 2113743L41 10000pF, 10%C401 2113928N01 0.1uF, 10%C402 2113928N01 0.1uF, 10%

CircuitRef

MotorolaPart No. Description

http

://w

ww.m

yrad

io16

8.na

me

it Board/Schematic Diagrams and Parts List

Radio Parts List

uitef

MotorolaPart No. Description

0986237A02 Connector, Contact Battery3980502Z01 Backup battery B+ (not placed

in GP328)3980501Z01 Backup battery B- (not placed

in GP328)0 2113743N31 16pF3 2113743N50 100pF4 2113743L41 10000pF, 10%5 2113928N01 0.1uF, 10%6 2113743L41 10000pF, 10%7 2113743N10 2.2pF9 2311049A07 1uF0 2113743L17 1000pF, 10%1 2311049A56 4.7uF, 20%, 10V2 2311049A57 10uF3 2311049A56 4.7uF, 20%, 10V4 2113928N01 0.1uF, 10%5 2113743N26 10pF8 2311049A56 4.7uF, 20%, 10V9 2113928N01 0.1uF, 10%0 2113743N26 10pF1 2113743L41 10000pF, 10%2 2113928N01 0.1uF, 10%3 2113928N01 0.1uF, 10%4 2113928N01 0.1uF, 10%5 2113928N01 0.1uF, 10%6 2113928N01 0.1uF, 10%7 2113743L41 10000pF, 10%8 2113743L41 10000pF, 10%9 2113743N50 100pF0 2113740F51 100pF1 2180478Z20 1uF2 2180478Z20 1uF3 2180478Z20 1uF4 2180478Z20 1uF5 2113743A23 0.220uF8 2113743A24 0.330uF9 2113743E07 0.022uF0 2113743A23 0.220uF1 2113743L19 1200pF2 2109720D14 0.1uF3 2113743E07 0.022uF4 2113743L41 10000pF, 10%0 2113743E07 0.022uF1 2113743L05 330pF2 2113743N18 4.7pF3 2113743N26 10pF4 2113743N38 33pF5 2113743N44 56pF

C3276 2113743N42 47pFC3277 2113743N48 82pFC3278 2113743E07 0.022uFC3279 2311049A40 2.2uF, 10%, 16VC3280 2113743L41 10000pF, 10%C3301 2113743N20 5.6pFC3302 2113743N54 150pFC3303 2113743N30 15pFC3304 2113743N54 150pFC3306 2113928N01 0.1uF, 10%C3307 2113743N50 100pFC3308 2113743L05 330pFC3309 2113928N01 0.1uF, 10%C3311 2113743N54 150pFC3312 2113743N31 16pFC3313 2113743N54 150pFC3315 2113743N26 10pFC3316 2113743N14 3.3pFC3317 2113743N40 39pFC3318 2113743M08 22000pF, +80/-20%C3320 2113743N48 82pFC3321 2113743L05 330pFC3322 2113743N50 100pFC3323 2113743N50 100pFC3324 2113743N38 33pFC3325 2113743L17 1000pF, 10%C3327 2113743L05 330pFC3329 2113743L05 330pFC3330 2113743N50 100pFC3331 2113743N50 100pFC3332 2113743N40 39pFC3334 2113743N33 20pFC3335 2113743N34 22pFC3336 2311049A18 10uFC3337 2113743M08 22000pF, +80/-20%C3338 2113743L09 470pF, 10%C3339 2113743N26 10pFC3501 2113743L05 330pFC3502 2113743N38 33pFC3503 2113743N38 33pFC3504 2113743M08 22000pF, +80/-20%C3505 2113743N38 33pFC3508 2113743M08 22000pF, +80/-20%C3509 2113743L05 330pFC3512 2113740F43 47pFC3513 2113740F38 30pFC3514 2113740F47 68pFC3515 2113743L29 3300pFC3516 2311049A08 1uFC3517 2113740F47 68pFC3521 2111078B51 220pF

CircuitRef

MotorolaPart No. Description

C3523 2111078B44 120pFC3524 2113740F33 18pFC3525 2113740F27 10pFC3526 2113743M08 22000C3528 2113740F27 10pFC3531 2113740F34 20pFC3532 2113740F47 68pFC3533 2113740F24 7.5pFC3534 2113740F19 4.7pFC3535 2113740F37 27pFC3536 2113740F31 15pFC3537 2113740F33 18pFC3539 2113740F29 12pFC3541 2113743M08 22000C3542 2113743L05 330pFC3543 2113743M08 22000C3544 2113743L05 330pFC3546 2113743L05 330pFC3547 2113743M08 22000C3550 2113743N23 7.5pFC3551 2113743N46 68pFC3552 2113743N44 56pFC3560 2311049A07 1uFC3561 2113743M08 22000C3562 2113743L29 3300pC3563 2113743L29 3300pC3564 2113743L01 220pFC3565 2113743E07 0.022C3566 2113743N50 100pFC3567 2113743L05 330pFC3568 2113743L29 3300pC3569 2113743M08 22000C3570 2113743L05 330pFC3571 2113743L09 470pFC3701 2113743L41 10000C3702 2113743L41 10000C3703 2113743L41 10000C3704 2113743L41 10000C3705 2113743E20 0.10uC3706 2311049J11 4.7uFC3707 2113743N34 22pFC3708 2113928N01 0.1uF,C3709 2113928N01 0.1uF,C3710 2104993J02 2.2uFC3711 2311049A69 10uFC3712 2113928N01 0.1uF,C3713 2311049A09 2.2uFC3714 2311049J11 4.7uFC3715 2113743L09 470pFC3721 2113743E20 0.10uC3722 2113743E20 0.10u

CircuitRef

MotorolaPart No.

Page 144: Motorola Gp328 338 Service Manual

6B-38 Circuit Board/Schematic Diagrams and Parts List

C4020C4021C403C407C408C409C410C411C414C415C416C419C420C421C422C423C424C425C426C427C428C429C430C431C433C434

C435C436C437C440C441C442C443C444C445C446C447C448C449C451C452C453C456C458C459C463C466C467C471C472

CircuiRef

eadeadeadeadeadeadeadeadeadead

e Clock Oscialltort placed in GP328)

eader

_Nutnnectornnector

10%

ead10%

10%0%

escription

L3731 2462587Q20 2.2uFL3801 2462587V34 100nHL3809 2462587V27 27nHL3811 2462587V34 100nHL3812 2462587V34 100nHL3813 2462587Q47 1000nH, 10%, QF45L3816 2462587V34 100nHL3821 2462587N50 56nHL3822 2462587N49 47nHL3823 2462587N49 47nHL3824 2462587N68 1uHL3825 2462587V34 100nHL3826 2462587N68 1uHL3831 2462587N50 56nHL3832 2462587N51 68nHL3833 2462587N50 56nHL3834 2462587N68 1uHL400 2462587Q42 390nH, 10%L401 2462587Q42 390nH, 10%L410 2462587Q42 390nH, 10%L411 2462587Q42 390nH, 10%L505 2462587Q42 390nH, 10%PB501 4080523Z01 Tactile, PushbuttonPB502 4080523Z01 Tactile, PushbuttonPB503 4080523Z01 Tactile, PushbuttonPB504 4080523Z01 Tactile, PushbuttonPB505 4080523Z01 Tactile, PushbuttonQ3200 4813827A07 NPN TransistorQ3201 4880214G02 NPN TransistorQ3202 4880214G02 NPN TransistorQ3270 4805218N63 RF TransistorQ3301 4880214G02 NPN TransistorQ3302 4813827A07 NPN TransistorQ3501 4813828A08 FETQ3561 4813824A17 PNP TransistorQ3721 4802245J50 Dual NPN/PNP TransistorQ3801 4813827A07 NPN TransistorQ400 4809579E18 Mosfet P - channelQ403 4813824A17 PNP TransistorQ405 4802245J54 Dual NPN TransistorQ410 4802245J54 Dual NPN TransistorQ416 4809579E18 Mosfet P - channel (not placed

in GP328)Q417 4802245J50 Dual NPN/PNP TransistorQ502 5180159R01 Dual NPN TransistorQ505 4880214G02 NPN TransistorR3200 0662057M54 150R3201 0662057M82 2200R3202 0662057M90 4700R3203 0662057M98 10kR3204 0662057M26 10

CircuitRef

MotorolaPart No. Description

http

://w

ww.m

yrad

io16

8.na

me

2113743L17 1000pF, 10%2113743L17 1000pF, 10%2113743G24 2.2uF, +/-80%/-20%2113928N01 0.1uF, 10%2113743N50 100pF2113928N01 0.1uF, 10%2113928N01 0.1uF, 10%2113928N01 0.1uF, 10%2113928N01 0.1uF, 10%2185895Z01 0.01uF, 10%2113928N01 0.1uF, 10%2113743L41 10000pF, 10%2113743L41 10000pF, 10%2113928N01 0.1uF, 10%2113928N01 0.1uF, 10%2113743N50 100pF2311049A59 10uF, 10%, 6V2113928N01 0.1uF, 10%2113743N50 100pF2113743N50 100pF2113928N01 0.1uF, 10%2113928N01 0.1uF, 10%2113928N01 0.1uF, 10%2113743N50 100pF2113743L41 10000pF, 10%2113928N01 0.1uF, 10% (not placed in

GP328)2113928N01 0.1uF, 10%2113743N34 22pF (not placed in GP328)2113743N34 22pF (not placed in GP328)2113743G26 4.7F, + 80/-20%2113743L09 470pF, 10%2113743E20 0.10uF, 10%2113928N01 0.1uF, 10%2113743N50 100pF2113743L09 470pF, 10%2113743L09 470pF, 10%2113928N01 0.1uF, 10%2113928N01 0.1uF, 10%2113743N50 100pF2113743M08 22000pF, +80/-20%2113743B29 1uF2113743N50 100pF2113743N50 100pF2113743N50 100pF2113743N50 100pF2113743N50 100pF2113743N50 100pF2113928N01 0.1uF, 10%2113743L09 470pF, 10%2113743L09 470pF, 10%

t MotorolaPart No. Description

C473 2113743L09 470pF, 10%C474 2113743L41 10000pF, 10%C475 2113743H14 10uF, +80/-20%C476 2113928D08 10uF, +/-80%/-20%C477 2113743L17 1000pF, 10%C478 2113743L17 1000pF, 10%C479 2113928N01 0.1uF, 10%C480 2113928D08 10uF, +/-80%/-20%C481 2113928N01 0.1uF, 10%C482 2113928N01 0.1uF, 10%C483 2113743L09 470pF, 10%C484 2113743L09 470pF, 10%C490 2113743L09 470pF, 10%C491 2113743L09 470pF, 10%C492 2113743L09 470pF, 10%C493 2113743N50 100pFC494 2113743N50 100pFC495 2113743L09 470pF, 10%C496 2113743L09 470pF, 10%C497 2113743L09 470pF, 10%C502 2311049A05 0.47uF, 10%, 25VC503 2113743N50 100pFC505 2113743N50 100pFC511 2113743N50 100pFC512 2113743N50 100pFC513 2113743N50 100pFC514 2113743N50 100pFC520 2113743L41 10000pF, 10%C521 2113743L41 10000pF, 10%C522 2113743L41 10000pF, 10%C523 2113743L41 10000pF, 10%C535 2113743L17 1000pF, 10%CR3301 4802245J42 Ring Quad diodeCR3302 4805129M96 Dual Bonds Pin Diode, RH

ReeledCR3303 4880154K03 Dual common anode-cathode

diodeCR411 4802245J62 Schottky diodeCR412 4802245J62 Schottky diodeCR413 4802245J62 Schottky diodeCR440 4813833C02 Dual Diode Common CathodeCR501 4880107R01 RectifierCR503 4805729G49 LED Red/YellowD3270 4862824C01 VaractorD3301 4802081B58 Dual DiodeD3302 4802081B58 Dual DiodeD3521 4880973Z02 Pin diodeD3551 4880973Z02 Pin diodeD3701 4802233J09 Triple diodeD3702 4802233J09 Triple diodeD3761 4862824C03 Varactor

CircuitRef

MotorolaPart No. Description

D3821 4805649Q13 VaractorD3831 4805649Q13 VaractorD3832 4862824C01 VaractorE400 2480640Z01 Ferrite bE401 2480640Z01 Ferrite bE402 2480640Z01 Ferrite bE403 2480640Z01 Ferrite bE404 2480640Z01 Ferrite bE405 2480640Z01 Ferrite bE406 2480640Z01 Ferrite bE407 2480640Z01 Ferrite bE408 2480640Z01 Ferrite bE409 2480640Z01 Ferrite bF501 6580542Z01 3A FuseFL401 4870368G02 Real Tim

XTAL (noH3501 2680499Z01 Heat sprJ3501 0985613Z01 RF JackJ3502 0280519Z02 AntennaJ400 0905505Y04 40-pin coJ403 0905505Y02 20-pin coL3200 2462587N68 1uHL3202 2462587N68 1uHL3221 2462587N68 1uHL3270 2462587T15 100nHL3271 2462587Q20 2.2uFL3301 2462587T35 12nHL3303 2462587T35 12nHL3304 2462587T23 470nHL3305 2462587T35 12nHL3306 2462587T35 12nHL3308 2462587T34 10nHL3309 2462587N55 150nHL3312 2462587V28 33nHL3501 2413926H09 5.6nHL3503 2462587V32 68nHL3504 2462587N51 68nHL3511 2462587N44 18nHL3512 2479990B01 11.03nHL3513 2479990A02 7.66nH,L3515 2479990C03 13.85nHL3519 2484657R01 Ferrite bL3521 2479990A02 7.66nH,L3522 2479990E01 23.75nHL3523 2462587N68 1uHL3531 2479990N01 43.67nHL3532 2479990N01 43.67nHL3538 2479990M01 30.54nHL3551 2479990N01 43.67nHL3552 2479990A02 7.66nH,L3701 2462587Q42 390nH, 1

CircuitRef

MotorolaPart No. D

Page 145: Motorola Gp328 338 Service Manual

Circu 6B-39

R320R320R320R320R320R321R321R321R321R321R321R322R322R322R322R322R327R327R327R327R327R327R327R330R330R330R330R330R330R330R331R331R331R331R331R331R331R331R331R332R332R332R332R350R350R350R350R350R350R351R354

CircR

ot placed in GP328)not placed in GP328)

(not placed in GP328)

ms, 1W

ot placed in GP328)ot placed in GP328)

Description

R498 0662057M98 10kR499 0662057M98 10kR501 0662057M70 680R502 0662057M56 180R505 0662057M98 10kR506 0662057N15 47KRT400 0680590Z01 THERMISTOR 33KS501 4080710Z02 Frequency SwitchS502 1880619Z02 Volume SwitchSH3201 2602023X08 Rx Backend Top ShieldSH3202 2686081B02 LVZIF shieldsSH3203 2686081B03 45.1MHz Xtal Filter ShieldSH3301 2686081B01 Rx Frontend Bottom ShieldSH3302 2686081B05 Mixer ShieldSH3303 2686081B06 Rx Frontend Top ShieldSH3501 2686081B03 Harmonic Filter ShieldSH3502 2686081B04 PA driver ShieldSH3701 2680511Z01 Synthesizer top shieldSH3702 2680511Z01 Synthesizer bottom shieldSH3801 2680513Z01 VCO Top ShieldSH3802 2680514Z01 VCO Bottom ShieldSH400 2680505Z01 Controller Memory ShieldSH401 2680506Z01 Controller on-off shieldSH402 2680515Z01 Controller Microprocessor

shieldSH403 2680516Z01 Controller Asfic_Cmp/Audio

PA shieldT3301 2580541Z01 Balun transformerT3302 2580541Z01 Balun transformerU3201 5102463J58 3.3V RegulatorU3220 5109632D83 LVZIF ICU3501 5185130C65 VHF/UHF/800 MHZ LDMOS

DriverU3502 5185765B28 PCICU3503 5185963A15 Temperature SenseU3701 5185963A27 LVFRACN Synthesizer ICU3711 5105739X05 5V RegulatorU3801 5105750U54 VCO BUFFER ICU400 5102463J40 3.3V RegulatorU404 5185963A53 ASFIC_CMPU405 NOT PLACEDU406 *5102463J59 128K x 8 Flash MemoryU407 *5102463J64 16K x 8 EEPROMU409 5102226J56 Microprocessor ICU410 5102463J57 3.3V Regulator (not placed in

GP328)U420 5102463J44 Audio PAVR3501 4880140L17 Zener diode-12VVR432 4805656W08 5.6V Zener diodeVR433 4805656W08 5.6V Zener diodeVR434 4802245J73 ZENER DIODE-6.8V

CircuitRef

MotorolaPart No. Description

http

://w

ww.m

yrad

io16

8.na

me

it Board/Schematic Diagrams and Parts List

5 0662057M74 10006 0662057N23 100K7 0662057N13 39K8 0662057M50 1009 0662057M74 10000 0662057M82 22001 0662057M82 22002 0662057M90 47003 0662057M82 22004 0662057M34 229 0662057M50 1000 0662057M90 47001 0662057M50 1004 0662057M26 105 0662057M74 10006 0662057M26 100 0662057M74 10001 0662057M42 472 0662057N15 47K3 0662057N15 47K4 0662057M83 24005 0662057M74 10006 0662057N30 200K3 0662057N23 100K4 0662057N23 100K5 0662057N19 68K6 0662057M82 22007 0662057N11 33K8 0662057M78 15009 0662057M92 56000 0662057M98 10k1 0662057M26 102 0662057M38 333 0662057M34 224 0662057M26 105 0662057M62 3306 0662057M66 4707 0662057N23 100K8 0662057M66 4701 0662057M54 1502 0662057M58 2203 0662057M32 184 0662057M58 2201 0662057M61 3002 0662057M32 183 0662057M61 3005 0662057M62 3306 0662057B62 3.97 0662057B62 3.99 0680539Z01 0.11 0662057N13 39K

uitef

MotorolaPart No. Description

R3542 0662057M92 5600R3543 0662057M50 100R3544 0662057A25 100R3545 0662057A25 100R3546 0662057N01 12KR3547 0662057N11 33KR3548 0662057N07 22KR3551 0662057M40 39R3561 0662057N01 12KR3562 0662057N11 33KR3563 0662057N33 270KR3564 0662057N35 330KR3569 0662057M92 5600R3570 0662057M98 10kR3571 0662057A27 120R3572 0662057A27 120R3573 0662057A27 120R3701 0662057M50 100R3703 0662057M54 150R3704 0662057M54 150R3705 0662057N11 33KR3721 0662057M66 470R3722 0662057M74 1000R3723 0662057M50 100R3727 0662057N23 100KR3741 0662057M50 100R3751 0662057N30 200KR3752 0662057N35 330KR3761 0662057N15 47KR3802 0662057M50 100R3803 0662057M58 220R3804 0662057M98 10kR3805 0662057N08 24KR3806 0662057M34 22R3808 0662057M26 10R3811 0662057M50 100R3816 0662057M74 1000R3817 0662057M01 0R3821 0662057M58 220R3822 0662057M42 47R3823 0662057N11 33KR3824 0662057N07 22KR3825 0662057M38 33R3826 0662057M32 18R3828 0662057M50 100R3829 0662057M01 0R3831 0662057M98 10kR3832 0662057N01 12KR3833 0662057M58 220R3834 0662057M42 47R3835 0662057N15 47K

CircuitRef

MotorolaPart No. Description

R3836 0662057M98 10kR400 0662057N15 47KR401 0662057M01 0R405 0662057M01 0R406 0662057N20 75KR407 0662057N19 68KR409 0662057M98 10kR410 0662057N23 100KR411 0662057M98 10kR413 0662057M01 0R414 0662057V34 180KR415 0662057V26 91KR416 0662057M98 10kR418 0662057M01 0R419 0662057M67 510 (nR420 0662057B46 10M (R421 0662057M81 2000R423 0662057N21 82KR424 0662057N12 36KR425 0662057N10 30KR426 0662057N35 330KR427 0662057M84 2700R428 0662057M10 2.2R429 0662057M98 10kR431 0662057N39 470KR432 0662057N16 51KR434 0662057M62 330R435 0662057M81 2000R436 0662057M01 0R445 0662057N08 24KR447 0662057N51 1.5MR448 0662057M98 10kR449 0662057N08 24KR450 0683962T45 68 ohR451 0662057N03 15KR452 0662057N23 100KR456 0662057M01 0R457 0662057M98 10kR460 0662057M90 4700R461 0662057M56 180 (nR462 0662057M98 10k (nR463 0662057M61 300R471 0662057M92 5600R472 0662057M93 6200R473 0662057M26 10R475 0662057M01 0R476 0662057N35 330KR477 0662057M74 1000R478 0662057M98 10kR481 0662057N08 24KR492 0662057M01 0

CircuitRef

MotorolaPart No.

Page 146: Motorola Gp328 338 Service Manual

6B-40 Circuit Board/Schematic Diagrams and Parts List

VR439VR447VR448VR449VR450VR460VR501VR506Y3200Y3761

CircuiRef

http

://w

ww.m

yrad

io16

8.na

me

* Motorola Depot Servicing only

4880140L17 Zener diode-12V4802245J74 ZENER DIODE-10V4802245J74 ZENER DIODE-10V4802245J74 ZENER DIODE-10V4802245J74 ZENER DIODE-10V4802245J73 ZENER DIODE-6.8V4802245J73 ZENER DIODE-6.8V4802245J73 ZENER DIODE-6.8V9186153B01 Crystal Filter4805875Z04 16.8MHz Xtal oscillator (SMD)

5480678Z01 PCB Bar Code Label8486062B16 VHF main PC Board

t MotorolaPart No. Description

Page 147: Motorola Gp328 338 Service Manual

Troubleshooting charts 6B-41

9.0 Troubleshooting chartsMCU Check

Power UpAlert Tone

OK?

SpeakerOK?

U409 EXTAL=7.3728 MHz?

U3701 Pin 1916.8 MHz

5V at U3711?3.3V at U3201?

U409 Reset Pin94 High?

MCU is OK

Not able to pro-gram RF Board

ICs

Before replacingMCU, check SPIclock, SPI data,

and RF IC select

ReplaceSpeaker

Read RadioOK?

CheckSetup

Reprogram thecorrect data.

See FGUTroubleshooting

7.5V atPin 3/5 U3711?

7.5V at Pin 1U3201

CheckQ400

ReplaceU3711/U3201

Check any shortto SWB+,

Vdda or Vddd

Press PTT. RedLED does not

light up

PTT U409Pin 53low?

Press PTTQ502-2High?

CheckPB504

CheckQ502-2voltage

LEDQ502,R501

OK?

ReplaceFaulty

Component

CheckAccessories

J403OPT_SEL_1 &OPT_SEL_2

Pin 8 & 9low?

Radio couldnot PTT

externally

U409Pin 52, 6

low?

See FGUTroubleshoot-

ing chart

LED shouldlight up

CheckMCU

PTT

NO

YES

YES

No

No

NO

YES YES

NO

YES

YES

NO

NO

YES

YES

NO

NO

YES

NO

YES

NO

YES

YES

NO

NO

YES

EXTSPKR

EXTPTT

INTAUDIO

J403 Pin 9 low?Pin 8 high?

ASFIC U404Pin 14 & 15

high?

CheckAccessories

CheckU404

CheckU420 Audio PA

NO

NO

YES

YES

J403 Audioat Pin 2 &

Pin 3

Check Spk.Flex Connec-

Audio atAudioPA(U420)input

Audio from Pin 41ASFIC, U404?

CheckASFIC U404

CheckAudio PA(U420)

CheckU3220LV ZIF

Audio atPin 2

U404?

NO

NO

NO

YES

YES

NO

YES

Troubleshooting Flow Chart for Controller

Page 148: Motorola Gp328 338 Service Manual

6B-42 Troubleshooting charts

Bad SINADBad 20dB Quieting

No Recovered Audio

START

Audio at pin27 of U3220? Check Controller

Yes

No

Spray of inject 1st IF intoXTAL Filter

IF Freq: 45.1MHz

Audio heard?BYes

No

Check 2nd LO ControlVoltage at C3279

VCO locked?BYes

16.8 MHzcheck at pin21 U3220?

Activity onU3220 sel

pin?

Check FGU

No

No

A

A

Yes

Check Q3270 biascircuitry for faults.

Rotate Freq. Knob

Check controller.

Before replacing U3220, check 2ndVCO Q3270. Check VCO O/P level,

C3272, C3273.

Yes

No

Troubleshooting Flow Chart for Receiver (Sheet 1 of 2)

Page 149: Motorola Gp328 338 Service Manual

Troubleshooting charts 6B-43

IF Signal atC3200?

No

RF Signal atT3301?

RF Signal atR3313?

No

RF Signal atC3306?

No

RF Signal atC3302?

No or

Check harmonic filter L3531 & L3532,C3532 and ant. switches D3521, D3551,

L3551, R3551, C3551, C3552, L3552

Check filter betweenC3302 & C3306; pro-

gram filter to schematictest freq and checkvaractor voltages.

Inject RF into J3501

Are varactorvoltages OK?

No

Yes

Check RF amp (Q3302)Stage.

Check filter betweenC3313 & T3301.

Yes

Check T3301, T3302,CR3301, R3321, R3322,

R3323Yes

1st LO O/POK?

Locked?

Yes

Check FGU

Yes

Trace IF signalfrom C3200 to

Q3200. Check forbad XTAL filter.

No

Yes Q3200 collec-tor OK?IF signalpresent?

Before replacingU3220, checkU3220 volt-

ages; trace IFsignal path.

Yes

Check for 2.9VDC

Is R5present?

Check Q3721,U3701 (pin 48) volt-

ages and U247

No

No

No

Check U404 voltage and ifU404 can be selected by

MCU before replacingU404.

Check varactor filter.

No

Yes

Yes

Yes

A

A

B

weak RF

Troubleshooting Flow Chart for Receiver (Sheet 2 of 2)

Page 150: Motorola Gp328 338 Service Manual

6B-44 Troubleshooting charts

START

No Power

Is There B+Bias for Ant

switch

CheckQ3561

Is CurrentOK?

Is Control Volt-age High or Low

Check PCIC

1. Check Pin Diodes2. Check Harmonic Filter

Inspect/Repair Tx.Output Network

Is PowerOK?

Done

Check Drive toModule

Is DriveOK? Troubleshoot

VCO

Inspect PA Network/Check Power Out ofU3501 at Cap C3512

Is PowerOK?

Replace U3501

Is PowerOK?

Replace Q3501

Done

Done

No

Yes

Yes No

No

Yes

Low

High

No

Yes

Yes

No

Yes

No

Troubleshooting Flow Chart for Transmitter

Page 151: Motorola Gp328 338 Service Manual

Troubleshooting charts 6B-45

5Vat pin 6 of

D3701

Is informationfrom µP U409

correct?

Is U3 701Pin 18 AT4.54 VDC?

Is U3701 Pin 47AT = 13 VDC

Is U3701 Pin 19<0.7 VDC in RX &>4.3 VDC in TX?

Start

Visualcheck of theBoard OK?

CorrectProblem

Check 5VRegulator

+5V at U3701Pin’s

13 & 30?

Is 16.8MHzSignal at

U3701 Pin 19?

Check Y3761, C3761,C3762, C3763, D3761

& R3761

Are signalsat Pin’s 14 &15 of U3701?

CheckL3701,R3701

Check Q260,Q261 & R260

U3701 pin 2 at>3V in Tx and<0.7V in Rx

RemoveShorts

Is there a shortbetween Pin 47 and

Pins 14 & 15 ofU3701?

Replace orresolder

necessarycomponents

Is RF level atU3701 Pin 32

>-30 dBm?

Are C3721,C3722,C3723,R3721, R3722,

R3723 OK?

Replace U3701

If R3727, C3726 & C3727are OK, then see VCOtroubleshooting chart

Are Waveformsat Pins 14 & 15

triangular?

Do Pins 7,8 & 9of U3701 togglewhen channel is

changed?

Check programminglines between U409

and U3701 Pins 7,8 & 9

Replace U3701

Check uP U409Troubleshooting

Chart

NO

YES

NO

YES

NO

YES

NO

YES

NO

NO

NO

YES

YES

NO

YES

YES

NO

YES

YES

YES

NO

NO

NO

NO

YES

NO

YES

YES

Check D3701, D3702,U3701, C3701 -

C3707

3.3V at U3701pins 5, 20, 34 &

36

Check U3201,L3731

Is16.8MHzsignal at

U3701 pin23?

ReplaceU3701

YES

NO

NO

YES

NO

YES

Troubleshooting Flow Chart for Synthesizer

Replace U3701

Page 152: Motorola Gp328 338 Service Manual

6B-46 Troubleshooting charts

START

No LO?

Tx Carrier?

VCO OK

CheckR3829

TRB = 3.2V?Pin 10>1V?

L3831,L3832,

L3833 O/C?

ChangeL3831, L3832

ChangeU3801

AUX 3High?

Check U3701Pin 2 for 3.2V

Pin 19=0V

AUX 3Low?

ChangeU3801

V ctrl 0Vor 13V? L3821,

L3822,L3823 Open

Circuit?

ChangeU3801

ChangeL3821,L3822,

L3823,L243

ChangeU3701

Check for faulty parts or dryjoints of L3812 C3806,R3806, R3802 & L3801

A

A

No

No

Yes

Yes

Yes

No

No

Yes

Yes

Yes

No

Yes

No

No

Yes

Yes

No

No

Check R3811,L3811 for dry joint

or faulty

No

Troubleshooting Flow Chart for VCO

Yes

Page 153: Motorola Gp328 338 Service Manual

6C-1

Section 6C

MODEL CHART AND TEST SPECIFICATIONS (450-527MHZ)

1.0 Model Chart

GP Series, UHF Band 2, 450-527 MHzModel Description

AZH25SDC9AA2 GP328 450-527 MHz 4W 4CH

AZH25SDC9AA3 GP328 450-527 MHz 4W

AZH25SDH9AA6 GP338 450-527 MHz 4W

Item Description

X PMUE1564_ GP328 Super Tanapa 450-527 MHz 4W 4CH

X PMUE1477_ GP328 Super Tanapa 450-527 MHz 4W

X PMUE1478_ GP338 Super Tanapa 450-527 MHz 4W

X PMUE1566_ GP328 Tanapa 450-527 MHz 4W 4CH

X PMUE1489_ GP328 Tanapa 450-527 MHz 4W

X PMUE1490_ GP338 Tanapa 450-527 MHz 4W

X PMLE4172_ GP328 B/C Kit 450-527 MHz 4W 4CH

X PMLE4118_ GP328 B/C Kit 450-527 MHz 4W

X PMLE4119_ GP338 B/C Kit 450-527 MHz 4W

X PMLN4348_ GP328 Front Housing Kit 4CH

X PMLN4216_ GP328 Front Housing Kit

X PMLN4199_ GP338 Front Housing Kit

X X X NAE6483_ UHF 16 cm Monopole (Whip) antenna (403-520 MHz)

X X X PMAE4008_ UHF 13 cm Monopole (Whip) antenna (470-530 MHz)

X X X PMAE4006_ UHF 9 cm antenna (465-495 MHz)

X X X PMAE4007_ UHF 9 cm antenna (490-527 MHz)

X X 6804110J54 GP328 User Manual

X 6804110J55 GP338 User Manual

x = Indicates one of each is required.

Page 154: Motorola Gp328 338 Service Manual

6C-2 Specifications

2.0 SpecificationsGeneral

Transmitter

Receiver

All specifications are subject to change without notice.

UHF

Frequency: 450-527 MHz

Channel Capacity: GP328 : 4/16 ChannelsGP338 : 128 Channels

Power Supply: 7.5 Volts ±20%

Dimensionswith Standard

High CapacityNiMH Battery:

with Ultra HighCapacity NiMH Bat-tery:

137mm x 57.5mm x37.5mm

137mm x 57.5mm x40mm

Weight:with Standard

High CapacityNiMH Battery:

with Ultra HighCapacity NiMH Bat-tery:

420 g

500 g

Average BatteryLife @ (5-5-90 DutyCycle)

Standard HighCapacity NiMH Bat-tery:

Ultra High Capac-ity NiMH Battery:

Low Pow-er

>11 hrs

>14 hrs

High Pow-er

>8 hrs

>11 hrs

Sealing: Passes rain testing perIP54

Shock: Meets MIL-STD-810-C,D & E and TIA/EIA 603

Vibration: Meets MIL-STD-810-C,D & E and TIA/EIA 603

Dust: Meets MIL-STD-810-C,D & E and IP54

Humidity: Meets MIL-STD-810-C,D & E and TIA/EIA 603

FCC ID AZ489FT4834

UHF

RF OutputNiMH @ 7.5V:

Low1W

High4W

Frequency 450-527 MHz

Channel Spacing 12.5/20/25 kHz

Freq. Stability(-30°C to +60°C)

0.00025%

Spurs/Harmonics: -36 dBm < 1 GHz-30 dBm > 1 GHz

Audio Response:(from 6 dB/oct. Pre-Emphasis, 300 to3000Hz)

+1, -3 dB

Audio Distortion:@ 1000 Hz, 60%Rated Max. Dev.

<5%

FM Noise: -40 dB

UHF12.5kHz

UHF 20/25kHz

Frequency: 450-527MHz

450-527MHz

Sensitivity12dB EIA SINAD:

0.35 µV 0.35 µV

Adjacent ChannelSelectivity ETS

-60 dB -70 dB

IntermodulationETS

-65 dB -65 dB

Freq. Stability(-30°C to +60°C):

0.00025% 0.00025%

Spur Rejection: -70 dB -70 dB

Image Rejection: -70 dB -70 dB

Audio Output@ <5% Distortion

500 mW 500 mW

Page 155: Motorola Gp328 338 Service Manual

Transmitter 6C-3

3.0 Transmitter

3.1 General(Refer to Figure 6-1)

The UHF transmitter contains five basic circuits:

1. power amplifier

2. antenna switch

3. harmonic filter

4. antenna matching network

5. power control integrated circuit (PCIC).

3.1.1 Power Amplifier

The power amplifier consists of two devices:

1. 9Z67 LDMOS driver IC (U101) and

2. PRF1507 LDMOS PA (Q110).

The 9Z67 LDMOS driver IC contains a 2 stage amplification with a supply voltage of 7.3V.

This RF power amplifier is capable of supplying an output power of 0.3W (pin 6 and 7) with an inputsignal of 2mW (3dBm) (pin16). The current drain would typically be 160mA while operating in thefrequency range of 450-527MHz.

The PRF1507 LDMOS PA is capable of supplying an output power of 7W with an input signal of0.3W. The current drain would typically be 1300mA while operating in the frequency range of 450-527MHz. The power output can be varied by changing the biasing voltage.

Figure 6-1: Transmitter Block Diagram

PCIC

Antenna

P ADriver

Vcontrol Vcontrol

From VCO

Jack

PA-FinalStage

Antenna Switch/Harmonic Filter/

Matching Network

Page 156: Motorola Gp328 338 Service Manual

6C-4 Transmitter

3.1.2 Antenna Switch

The antenna switch circuit consists of two PIN diodes (CR101 and CR102), a pi network (C107, L104and C106), and two current limiting resistors (R101, R170). In the transmit mode, B+ at PCIC (U102)pin 23 will go low and turn on Q111 where a B+ bias is applied to the antenna switch circuit to bias thediodes "on". The shunt diode (CR102) shorts out the receiver port, and the pi network, whichoperates as a quarter wave transmission line, transforms the low impedance of the shunt diode to ahigh impedance at the input of the harmonic filter. In the receive mode, the diodes are both off, andhence, there exists a low attenuation path between the antenna and receiver ports.

3.1.3 Harmonic Filter

The harmonic filter consists of C104, L102, C103, L101 and C102. The design of the harmonic filterfor UHF is that of a modified Zolotarev design. It has been optimized for efficiency of the powermodule. This type of filter has the advantage that it can give a greater attenuation in the stop-band fora given ripple level. The harmonic filter insertion loss is typically less than 1.2dB.

3.1.4 Antenna Matching Network

A matching network which is made up of L116 is used to match the antenna's impedance to theharmonic filter. This will optimize the performance of the transmitter and receiver into an antenna.

3.1.5 Power Control Integrated Circuit (PCIC)

The transmitter uses the Power Control IC (PCIC), U102 to regulate the power output of the radio.The current to the final stage of the power module is supplied through R101, which provides a voltageproportional to the current drain. This voltage is then fedback to the Automatic Level Control (ALC)within the PCIC to regulate the output power of the transmitter.

The PCIC has internal digital to analog converters (DACs) which provide the reference voltage of thecontrol loop. The reference voltage level is programmable through the SPI line of the PCIC.

There are resistors and integrators within the PCIC, and external capacitors (C133, C134 and C135)in controlling the transmitter rising and falling time. These are necessary in reducing the powersplatter into adjacent channels.

CR105 and its associated components are part of the temperature cut back circuitry. It senses theprinted circuit board temperature around the transmitter circuits and output a DC voltage to the PCIC.If the DC voltage produced exceeds the set threshold in the PCIC, the transmitter output power will bereduced so as to reduce the transmitter temperature.

Page 157: Motorola Gp328 338 Service Manual

Receiver 6C-5

4.0 Receiver

4.1 Receiver Front-End(Refer to UHF Band 2 Receiver Front End Schematic Diagram on page 6C-16 and UHF Band 2Transmitter Schematic Diagram on page 6C-20)

The RF signal is received by the antenna and applied to a low-pass filter. For UHF, the filter consistsof L101, L102, C102, C103, C104. The filtered RF signal is passed through the antenna switch. Theantenna switch circuit consists of two PIN diodes(CR101 and CR102) and a pi network (C106, L104and C107).The signal is then applied to a varactor tuned bandpass filter. The UHF bandpass filtercomprises of L301, L302, C302, C303, C304, CR301 and CR302. The bandpass filter is tuned byapplying a control voltage to the varactor diodes(CR301 and CR302) in the filter.

The bandpass filter is electronically tuned by the DACRx from IC404 which is controlled by themicroprocessor. Depending on the carrier frequency, the DACRx will supply the tuned voltage to thevaractor diodes in the filter. Wideband operation of the filter is achieved by shifting the bandpass filteracross the band.

The output of the bandpass filter is coupled to the RF amplifier transistor Q301 via C307. After beingamplified by the RF amplifier, the RF signal is further filtered by a second varactor tuned bandpassfilter, consisting of L306, L307, C313, C317, CR304 and CR305.

Both the pre and post-RF amplifier varactor tuned filters have similar responses. The 3 dB bandwidthof the filter is about 50 MHz. This enables the filters to be electronically controlled by using a singlecontrol voltage which is DACRx .

Figure 6-2: UHF Receiver Block Diagram

Demodulator

Synthesizer

CrystalFilter

MixerVaractorTuned FilterRF AmpVaractor

Tuned Filter

Pin DiodeAntennaSwitchRF Jack

Antenna

AGC

Control Voltagefrom ASFIC

First LOfrom FGU

Recovered AudioSquelch

RSSI

IF IC

SPI Bus

16.8 MHzReference Clock

SecondLO VCO

U301

IF Amp

Page 158: Motorola Gp328 338 Service Manual

6C-6 Receiver

The output of the post-RF amplifier filter which is connected to the passive double balanced mixerconsists of T301, T302 and CR306. Matching of the filter to the mixer is provided by C381. Aftermixing with the first LO signal from the voltage controlled oscillator (VCO) using low side injection, theRF signal is down-converted to the 45.1 MHz IF signal.

The IF signal coming out of the mixer is transfered to the crystal filter (FL301) through a resistor padand a diplexer (C322 and L310). Matching to the input of the crystal filter is provided by C324 andL311. The crystal filter provides the necessary selectivity and intermodulation protection.

4.2 Receiver Back-End(Refer to UHF Band 2 Receiver Back End Schematic Diagram on page 6C-17)

The output of crystal filter FL301 is matched to the input of IF amplifier transistor Q302 bycomponents R352 and C325. Voltage supply to the IF amplifier is taken from the receive 5 volts (R5).The IF amplifer provides a gain of about 7dB. The amplified IF signal is then coupled into U301(pin 3)via C330, C338 and L330 which provides the matching for the IF amplifier and U301.

The IF signal applied to pin 3 of U301 is amplified, down-converted, filtered, and demodulated, toproduce the recovered audio at pin 27 of U301. This IF IC is electronically programmable, and theamount of filtering (which is dependent on the radio channel spacing) is controlled by themicroprocessor. Additional filtering, once externally provided by the conventional ceramic filters, isreplaced by internal filters in the IF module (U301).

The IF IC uses a type of direct conversion process, whereby the externally generated second LOfrequency is divided by two in U301 so that it is very close to the first IF frequency. The IF IC (U301)synthesizes the second LO and phase-locks the VCO to track the first IF frequency. The second LOis designed to oscillate at twice the first IF frequency because of the divide-by-two function in the IFIC.

In the absence of an IF signal, the VCO will “search” for a frequency, or its frequency will vary close totwice the IF frequency. When an IF signal is received, the VCO will lock onto the IF signal. Thesecond LO/VCO is a Colpitts oscillator built around transistor Q320. The VCO has a varactor diode,CR310, to adjust the VCO frequency. The control signal for the varactor is derived from a loop filterconsisting of C362, C363, C364, R320 and R321.

The IF IC (U301) also performs several other functions. It provides a received signal-strengthindicator (RSSI) and a squelch output. The RSSI is a dc voltage monitored by the microprocessor,and used as a peak indicator during the bench tuning of the receiver front-end varactor filter. TheRSSI voltage is also used to control the automatic gain control (AGC) circuit at the front-end.

The demodulated signal on pin 27 of U301 is also used for squelch control. The signal is routed toU404 (ASFIC) where squelch signal shaping and detection takes place. The demodulated audiosignal is also routed to U404 for processing before going to the audio amplifier for amplification.

Page 159: Motorola Gp328 338 Service Manual

Receiver 6C-7

4.3 Automatic Gain Control Circuit(Refer to UHF Band 2 Receiver Front End Schematic Diagram on page 6C-16)

The front end automatic gain control circuit is to provide automatic gain reduction of the front end RFamplifier via feedback. This action is necessary to prevent overloading of backend circuits. This isachieved by drawing some of the output power from the RF amplifier’s output. At high radiofrequencies, capacitor C331 provides the low impedance path to ground for this purpose. CR308 is aPIN diode used for switching the path on or off. A certain amount of forward biasing current is neededto turn the PIN diode on. Transistors Q315 provides this current where upon saturation, current willflow via R347, PIN diode, collector and emitter of Q315 and R319 before going to ground. Q315 is anNPN transistor used for switching here. Maximum current flowing through the PIN is mainly limited bythe resistor R319.

Radio signal strength indicator, RSSI, a voltage signal, is used to drive Q315 to saturation henceturning it on. RSSI is produced by U301 and is proportional to the gain of the RF amplifier and theinput RF signal power to the radio.

Resistor network at the input to the base of Q315 is scaled to turn on Q315, hence activating theAGC, at certain RSSI levels. In order to turn on Q315, the voltage across the transistor’s base toground must be greater or equal to the voltage across R319, plus the base-emitter voltage (Vbe)present at Q315. The resistor network with thermistor RT300 is capable of providing temperaturecompensation to the AGC circuit, as RSSI generated by U301 is lower at cold temperaturescompared to normal operation at room temperature. Resistor R300 and capacitor C397 form an R-Cnetwork used to dampen any transient instability while the AGC is turning on.

Page 160: Motorola Gp328 338 Service Manual

6C-8 Frequency Generation Circuitry

5.0 Frequency Generation Circuitry

The Frequency Generation Circuitry is composed of two main ICs, the Fractional-N synthesizer(U201), and the VCO/Buffer IC (U241). Designed in conjunction to maximize compatibility, the twoICs provide many of the functions that normally would require additional circuitry. The synthesizerblock diagram illustrates the interconnect and support circuitry used in the region. Refer to therelevant schematics for the reference designators.

The synthesizer is powered by regulated 5V and 3.3V which come from U247 and U248 respectively.The synthesizer in turn generates a superfiltered 4.5V which powers U241.

In addition to the VCO, the synthesizer must interface with the logic and ASFIC circuitry.Programming for the synthesizer is accomplished through the data , clock and chip select lines fromthe microprocessor. A 3.3V dc signal from synthesizer lock detect line indicates to the microprocessorthat the synthesizer is locked.

Transmit modulation from the ASFIC is supplied to pin10 of U201. Internally the audio is digitized bythe Fractional-N and applied to the loop divider to provide the low-port modulation. The audio runsthrough an internal attenuator for modulation balancing purposes before going out to the VCO.

Figure 6-3: Frequency Generation Unit Block Diagram

VoltageMultiplier

SynthesizerU201

DualTran-sistor

LoopFilter

VCOBICU241

LowPassFilter

MatchingNetwork

Attenuator

ToMixer

ToPA Driver

VCP

Vmult1Aux3

Aux4

MOD Out

ModulatingSignal

Vmult2

Rx VCO Circuit

Tx VCO Circuit

TRB

16.8 MHzRef. Osc.

Rx Out

Tx Out

Page 161: Motorola Gp328 338 Service Manual

Frequency Generation Circuitry 6C-9

5.1 Synthesizer(Refer to UHF Band 2 Synthesizer Schematic Diagram on page 6C-18)

The Fractional-N Synthesizer uses a 16.8MHz crystal (FL201) to provide a reference for the system.The LVFractN IC (U201) further divides this to 2.1MHz, 2.225MHz, and 2.4MHz as referencefrequencies. Together with C206, C207, C208, R204 and CR203 , they build up the referenceoscillator which is capable of 2.5ppm stability over temperatures of -30 to 85°C. It also provides16.8MHz at pin 19 of U201 to be used by ASFIC and LVZIF.

The loop filter which consist of C231, C232, C233, R231, R232 and R233 provides the necessary dcsteering voltage for the VCO and determines the amount of noise and spur passing through .

In achieving fast locking for the synthesizer, an internal adapt charge pump provides higher current atpin 45 of U201 to put synthesizer within the lock range. The required frequency is then locked bynormal mode charge pump at pin 43 .

Both the normal and adapt charge pumps get their supply from the capacitive voltage multiplier whichis made up of C258, C259, C228, triple diode CR201 and level shifters U210 and U211. Two 3.3Vsquare waves ( 180 deg out of phase) are first shifted to 5V, then along with regulated 5V , putthrough arrays of diodes and capacitors to build up 13.3V at pin 47 of U201.

Figure 6-4 Synthesizer Block Diagram

DATA

CLK

CEX

MODIN

VCC, DC5V

XTAL1

XTAL2

WARP

PREIN

VCP

REFERENCEOSCILLATOR

VOLTAGEMULTIPLIER

VOLTAGECONTROLLEDOSCILLATOR

2-POLELOOPFILTER

DATA (U409 PIN 100)

CLOCK (U409 PIN 1)

CSX (U409 PIN 2)

MOD IN (U404 PIN 40)

+5V (U247 PIN 4)

7

8

9

10

13, 30

23

24

25

32

47

VMULT2 VMULT1

BIAS1

SFOUT

AUX3

AUX4

IADAPTIOUT

GND

FREFOUT

LOCK 4

19

6, 22, 23, 24

4345

3

2

28

14 15

40

FILTERED 5V

STEERINGLINE

LOCK (U409 PIN 56)

PRESCALER IN

LO RF INJECTION

TX RF INJECTION(1ST STAGE OF PA)

FREF (U201 PIN 21 & U404 PIN 34)

39BIAS2

41

DUALTRANSIS

DUALTRANSIS-

48

5VR5

5, 20, 34, 36(U248 PIN 5)

AUX1

VDD, 3.3V MODOUT

U251LOW VOLTAGEFRACTIONAL-NSYNTHESIZER

TORS

TORS

Page 162: Motorola Gp328 338 Service Manual

6C-10 Frequency Generation Circuitry

5.2 VCO - Voltage Controlled Oscillator(Refer to UHF Band 2 Voltage Controlled Oscillator Schematic Diagram on page 6C-19)

Figure 6-5 VCO Block Diagram

The VCOBIC (U241) in conjunction with the Fractional-N synthesizer (U201) generates RF in boththe receive and the transmit modes of operation. The TRB line (U241 pin 19) determines whichoscillator and buffer will be enabled. A sample of the RF signal from the enabled oscillator is routedfrom U241 pin 12, through a low pass filter, to the prescaler input (U201 pin 32). After frequencycomparison in the synthesizer, a resultant CONTROL VOLTAGE is received at the VCO. Thisvoltage is a DC voltage between 3.5V and 9.5V when the PLL is locked on frequency.

Presc

RX

TX

MatchingNetwork

Low PassFilter

Attenuator

Pin8

Pin14

Pin10

Level ShifterNetwork

5V

(U201 Pin28)

VCC Buffers

TX RF Injection

U201 Pin 32

AUX4 (U201 Pin3)

AUX3 (U201 Pin2)

Prescaler Out

Pin 12Pin 19Pin 20

TX/RX/BSSwitching Network

U241VCOBIC

RxActive Bias

TxActive Bias

Pin2

Rx-I adjust

Pin1

Tx-I adjust

Pins 9,11,17Pin18

VsensCircuit

Pin15

Pin16

RX VCOCircuit

TX VCOCircuit

RX Tank

TX Tank

Pin7

Vcc-Superfilter

Collector/RF in

Pin4

Pin5

Pin6

RX

TX

(U201 Pin28)

Rx-SW

Tx-SW

Vcc-Logic

(U201 Pin28)

Steer LineVoltage(VCTRL)

Pin13

Pin3

TRB_IN

LO RF INJECTION

VSF

VSF

VSF

Page 163: Motorola Gp328 338 Service Manual

Frequency Generation Circuitry 6C-11

The VCOBIC(U241) is operated at 4.54 V (VSF) and Fractional-N synthesizer (U201) at 3.3V. Thisdifference in operating voltage requires a level shifter consisting of Q260 and Q261 on the TRB line.

The operation logic is shown in Table 6-1.

In the receive mode, U241 pin 19 is low or grounded. This activates the receive VCO by enabling thereceive oscillator and the receive buffer of U241. The RF signal at U241 pin 8 is run through amatching network. The resulting RF signal is the LO RF INJECTION and it is applied to the mixer atT302 (refer to UHF Band 2 Receiver Front End Schematic Diagram on page 6C-16).

During the transmit condition, when PTT is depressed, five volts is applied to U241 pin 19. Thisactivates the transmit VCO by enabling the transmit oscillator and the transmit buffer of U241. The RFsignal at U241 pin 10 is injected into the input of the PA module (U101 pin16). This RF signal is theTX RF INJECTION. Also in transmit mode, the audio signal to be frequency modulated onto thecarrier is received through the U201 pin 41.

When a high impedance is applied to U241 pin19, the VCO is operating in BATTERY SAVER mode.In this case, both the receive and transmit oscillators as well as the receive transmit and prescalerbuffer are turned off.

Table 6-1: Level Shifter Logic

DesiredMode AUX 4 AUX 3 TRB

Tx Low High (@3.2V) High (@4.8V)

Rx High Low Low

Battery Saver Low Low Hi-Z/Float (@2.5V)

Page 164: Motorola Gp328 338 Service Manual

6C-12 Notes For All Schematics and Circuit Boards

6.0 Notes For All Schematics and Circuit Boards* Component is frequency sensitive. Refer to the Electrical Parts List for value and usage.

1. Unless otherwise stated, resistances are in Ohms (k = 1000), and capacitances are in picofarads(pF) or microfarads (µF).

2. DC voltages are measured from point indicated to chassis ground using a Motorola DC multime-ter or equivalent. Transmitter measurements should be made with a 1.2 µH choke in series withthe voltage probe to prevent circuit loading.

3. Reference Designators are assigned in the following manner:

100 Series = Transmitter

200 Series = Frequency Generation

300 Series = Receiver

400/500 Series = Controller

600 Series = Keypad Board

4. Interconnect Tie Point Legend:

UNSWB+ = Unswitch Battery Voltage (7.5V)

SWB+ = Switch Battery Voltage (7.5V)

R5 = Receiver Five Volts

CLK = Clock

Vdda = Regulated 3.3 Volts (for analog)

Vddd = Regulated 3.3 Volts (for digital)

CSX = Chip Select Line (not for LVZIF)

SYN = Synthesizer

DACRX = Digital to Analog Voltage (For Receiver Front End Filter)

VSF = Voltage Super Filtered (5 volts)

VR = Voltage Regulator

6-LAYER CIRCUIT BOARD DETAIL VIEWINGCOPPER STEPS IN PROPER LAYER SEQUENCE

LAYER 1 (L1)

LAYER 2 (L2)LAYER 3 (L3)LAYER 4 (L4)

LAYER 5 (L5)LAYER 6 (L6)

INNER LAYERS

SIDE 1

SIDE 2

Page 165: Motorola Gp328 338 Service Manual

Circu 6C-13

7.0

ZMY0130185-A

C109

C111

1

2

3

Q110

5

00

R31

6

C33

1

C333C396

CR

308

317

336

R34

2

C10

1

C102

C10

3

C10

4

C106

C107 C188

CR

101

CR102

L101

L102L104

L105

SH100

C301

C30

2C

303

C304

C30

5

C30

8

CR301

CR302

L301

L302

R301R302

SH301

C349

C350

C351C352

C353

C35

4

C362 C363

C36

4

C384C385

CR

310

L325 L332

Q320

R32

0

R321

R32

2

R32

4

R34

5

R34

6

R355

SH321

C521

PB501

VR440

C140

C141

C520

L116

PB

505

VR443

C51

1

C512 C513

C51

4

43

2CR503

Q502

Q505

R501

R50

2

R505

C50

2

C50

5

R506

R50

7

VR501

HF Band 2 (450-527MHz) Main Board Top Side PCB No. 8485641Z02

http

://w

ww.m

yrad

io16

8.na

me

it Board/Schematic Diagrams and Parts List

Circuit Board/Schematic Diagrams and Parts List

1

40

J400

C443 C444

C471C472C473

L401

R435

RT400

TP401

TP402

TP410

VR

447

VR

449

C441

C490

C491

C492

C493C494C495C496

C497

D40

322

20

121

J403

L400

4 3

Q41

7

R42

1

R45

0

R477

TP405

TP406 TP415VR

434VR450

C40

0

C40

1

C402

C403

C467

C48

0

C48

2

CR

440

D401 Q40

0

Q403

43

Q405

R401

R40

2

R40

3

R405

R40

6R407

R41

6

R427

R44

6R

447

R44

8

R476

R481

SH401

4

5 8U400

C42

3

C424

C425C426

C427C428

C429

E407

E40

8

E409

R408

R410

R41

8

R428

R42

9

R437

R478

R49

2

SH400

22

218

71

U405

32 17

161

U406

145

8

U40

7

B50

3

B50

4

C21

6C

432

6 431

FL2

01

PB502PB503

TP201

C203

C21

0

C211

C21

2

C213

C21

4

C21

7

C220

C22

8

C22

9

C23

0

C23

3

C23

5

C238C257

C260

C28

2 C28

3

C29

1

C292

C29

4

C29

7

CR

201

L201

L202

L203

L232

43

Q210

4 3

Q26

0

R206

R255

R256

SH201

TP202

TP302

U247

C247 C248C251

C253

C27

1

C27

2

C273

C27

6

C28

5 C28

6C28

9

C37

0

C37

4

C38

63

L243

3

L253 L271

L273

L282

L321

Q241

4 3

Q26

1

R24

3

R248

R25

3R26

0

R33

3

R33

9

SH241

C11

0 C112

C11

3

C11

4

C115

C116

C117

C11

8 C119

C12

0

C121

C12

2C

125

C127

C12

9

C131

C160

C161 C16

5

C166

C16

9

C171

C18

0

C18

1

L106

L107

L108

L109

L113 L114

L115

L117L160

R10

4

R10

6

R10

7

R108

R120

R16

1

R17

1

R173

R174

SH101

1

16

8

9

U101

C31

9

C32

0

C32

2

C37

5

C38

1

L309

L310

R308R30

9 R310

R348

SH303

643

T30

164 3

T30

2C

323

C32

4

C325FL3

01

L311

R35

1

R352

SH323

C328

C39

1

C397

PB504

Q31

Q316

R3

R314

R318

R31

9

R325

R32

6R

327

R33

4

R335R338

RT

300

RT301

VR

300

VR

444

R

R

U

Page 166: Motorola Gp328 338 Service Manual

6C-14 Circuit Board/Schematic Diagrams and Parts List

2

Y201

C523

C204

C206C207

C208

C218

C258

259

C265

C296

CR203

R204

R281

25

13

43

U210

43

U211

C252C254

C25

5

371

73

CR

251

L251

R251

R25

2

R254

330

R332

C431C433

C435

C43

6

C437

D40

2

3

FL4

01Q

416

R414

R415

R419

R42

0R

426

R460

R462

R46

3

C453

C45

6

L411

R409R411

R432

R457

R46

1

SH402

176

51 26

U409

C434

U41

0

C44

9

C458C459

C46

3

C466

E400

E40

1

E402

E40

3

E404E405

E406

L410

C407

C408

C409C410

C41

1

C414

C41

5

C41

6C41

9

C42

0C

421

C42

2

C430C440

C44

7

C448

C450C451

C45

2

C475

C476

C479

C481

43

Q410

R400R413

R423

R424

R425

R431

R434

R436

R445

R449

R471

R472

R475

1

37 25

13

U404

11

1

20

10

U420

SH403

C442

C445

R473

VR

432

VR

433

VR445

VR446

VR448

ZMY0130184-B

UHF B

http

://w

ww.m

yrad

io16

8.na

me

4

53

2S502

2

C

8

C

4

S501

C329

C33

4

C33

6

C337

C344

C345

C347

C348

C35

5

C356

C360

C361

C38

2

L314

L331

R343

R350

137

25 13

U301

C33

9

C34

0

C34

1

C34

2

C343

C346

C357C358

C359

C383C390 R344

SH322

SH302

2

3

4

1

J101 J102C108

P100

43

Q111

R101R170

C132 C172

C173

CR105

H101

R133

R172

R102

R130R131

C105

C123

C126

C128

C130

C133

C135

C138

C150C151C152

C170

C17

4

E101

L112

R109

R132

R329

1

17 9

25

U102

VR

439

C13

4

C307

R328

R340

C306

C309C310 C311

C312

C313

C314C315

C316

C317C318

C321

C380

C395

CR

303

CR304 CR305

L303

L304

L305

L306 L307

L340

Q30

1R303

R304R305

R30

6

R30

7

R347

1

2

3

B501

C503

F501

C326

C327

C330

C338

L330

Q30

2

R311R312

R31

3

R315

CR306

SH304

3

4

C215

C277

C278

C27

9

C522

L505

R205U248

VR441

VR442

VR506

CR501

C201

C20

2

C219C223

C224

C231

C232

C234C

C263

C264C293

C29

8

L261

R201

R202

R23

1R

232

R233

SH202

1

37

U201

C24

1

C242C243

C244

C245C246C250

C28

1

C295

CC372

C3C378

CR241

CR242

CR243

L241

L242

L281

Q310R110

R111R112

R241 R242

R244

R24

5

RR331

R349

SH242

11

120

10

U241

and 2 (450-527MHz) Main Board Bottom Side PCB No. 8485641Z02

Page 167: Motorola Gp328 338 Service Manual

Circu 6C-15

100pFC503 VR506

6.8V10VVR439

L505390nH

24V

21

F501

TT_CODE

BATT –

BATT +

RADIO_CODEBATTERY_CONTACT

CONN_J

B501

2 DATA1 NEG3 POS

6.8VVR443

12SWITCHPB505

.01uFC520

47KR506

050K

GREEN_LED

1

38

UHF Band 2 Controls And Switches Schematic Diagram

http

://w

ww.m

yrad

io16

8.na

me

it Board/Schematic Diagrams and Parts List

DEMOD

LVZIF_SEL

RSSI

16.8MHz

CLK

DACRx

DATA

Vdda

Vdda

RX_IN RX_INJ

R5

RECEIVER

DATA

CLK

DACRX

DEMOD

RSSI

LVZIF_SEL

16.8MHz

RX_INJ

SWB+

TX_INJ

Vdda

FGU

16.8MHz4V_3.3V

5V

CLK

CSX

DATA

LOCK

MODIN

R5CSX

4V_3.3V

SWB+

LOCK

MODIN

5V

DATA

RESETRX_IN TX_INJ

UNSWB+

TRANSMITTER

5V

CLK

CSX

5VUNSWB+

RESET

B503

B504

LI_ION

C505100pF

R5070

C5020.47uF

VR5016.8V

1

5

HIG

H

3 2

SWITCHS502

4

LOW

Vdda

VOL

MECH_SWB+

2

CR5011

BAUNSWB+

PB501

12SWITCH

.01uFC521

6.8VVR440

SB1

12

PB502SWITCH

C522.01uF

VR4416.8V

PB503

SB2

C523.01uF 6.8V

VR442

SWITCHPB504

12

12SWITCH

VR4446.8V

PTT

SB3

EMER

Q505

R51

Vdda

IMX1

51

6

24

3

SWB+

RED_LED

Q502

680R501

180R502

4

1 3CR503

2

RTA0

RTA1

RTA2

RTA3

100pFC514

100pFC513

100pFC511

100pFC512

SWITCHS501

GND GND

PCPC2C0C1

PC0PC1

4C0C1

12

7 9

Page 168: Motorola Gp328 338 Service Manual

6C-16 Circuit Board/Schematic Diagrams and Parts List

RX_I

4.7pFC381

R3290

C318

11pFC317

7.5pF

T301

4

6

3

1

2

XFMR

TP302

T302XFMR

46

31 2

C320 C3197.5pF 3.6pF

16.28nHL309R348

3.6K

R338R335

RT301

2 1

C391

NUNU

NUNU

R5

C370100pF

R330RSSI

RX_INJ

NUR331 C372

Q3101

3

2

C371

100pFC386

NU

NUNUNU

0R349

100pFC374

C378C373NU NU

C375

VCOBUF

100pF

R332

L321

0R339

R5

NU

NU

R333NU

R30918

82pFC322

L310150nH

270R308

270R310

2

34

1

CR306

IF50.125MHz26.925MHz

[email protected]

[email protected]@481.825MHz

-50dBm

UHF B

http

://w

ww.m

yrad

io16

8.na

me

L340390nH

HSMP38201

23

CR308

R3171K

100pFC395 C331

100pF

1KR347

R5

C311

100KR307R306

100K

CR304

C306

CR305

C3127.5pF

12nHL305

C31311pF

L30611.03nH11.03nHL307

4.3pFC316

NU

NU

R305470

R30412K

C321100pF

C309100pF

R3031.5K

Q301

13

2

C3070.1uF

0.1uFC314

180nHL304

C315100pF

C3100.1uF

R3282.7

L30322nH

R3408.2K

11.03nHL302

C308100pF

100KR301

12pFC302

C3058.2pF

CR301 CR302

4.3pFC303

11pFC304

R302

L301

100K

11.03nH 1

CR303

2

3

C3018.2pF

N

1

SH304SHIELD

1

SHIELDSH302

1

SHIELDSH301 SH303

SHIELD

1

RXFE Top Shield RXFE Bottom Shield Mixer Shield

RX Mixer Diode Shield

.01uFC380

100KR342

R5

DACRx

R336

C333R5

NU

NU

33KR327

R31691K

Q315

13

218KR318

R319150

C396NU

R3002.2K

0.47pFC397

1

33.0KRT300

2

R334

Q316

13

2VR300

R326

NU

NU

NU

NU

R3256.8K

[email protected]@526.925MHz

[email protected]@5

1.850V@

0.508V

4.398V

[email protected]@526.925MHz

Rx1 = [email protected] rf signalRx2 = [email protected] rf signalprobed using high impedence probe

and 2 Receiver Front End Schematic Diagram

Page 169: Motorola Gp328 338 Service Manual

Circu 6C-17

DB

C383100pF

Hz

Vdd_FILTERED

C350330pF

C349.022uF

2KR324

C35120pF

BFQ67WQ320

1

3

212pFC352

0R355

43pFC353

C362.022uF

56pF 100nHL332C385

.01uFC364

CR310R3201K

R3212.4K

C3632.2uF

2.20uHL325

R34656K

200KR322

C35447pF

100pFC390

100KR350

uF45

DEMOD

SH322SHIELD

1

SH321SHIELD

1

LVZIF TOP SHIELD LVZIF BTM SHIELD

C38456pF

10KR345

3.185V 2.628V

2.095V

UHF Band 2 Receiver Back End Schematic Diagram

http

://w

ww.m

yrad

io16

8.na

me

it Board/Schematic Diagrams and Parts List

TE

ST

D

VA

G

VA

G_R

EF

VP

P

RE

D_V

CC

RE

D_V

SS

RO

SE

_VC

CR

OS

E_V

SS

RS

SI_

FLT

RS

SI_

OU

T

TESTAIOUT

LIM

MIX_BYP

MIX_IN

MLPD_CR

PH

AS

E_L

OC

K

PREAMP_OUTPRE_AGC

PR

E_I

N

EM

IT

EX

TB

S

FREFGND

GO

LD_V

CC GOLD_VSS

GREEN_VCC

GREEN_VSS

C4M

C4P

CEXCLK

COL

DATA

DE

MO

D_H

FD

EM

OD

_OU

T

BROWN_VCCBRP_OFF

C1M

C1P

C2M

C2P

C3M

C3P

AF

C

BA

SE

BLUE_VCCBLUE_VSS

U30132D83

1615

24

2120

14

1918

13

17

2223

32 2530 2931 2636 28 27333435

42

464748

41

43

37

403938

4544

8 931 2 54 116 107 12

0.1uFC336

C356.022uF

L3142.2uH

C3411uF

C3391uF

C337100pF

C3401uF

1uFC342

Vdd_FILTERED

R5C3550.33uF

100pFC327

C3280.1uF

2.4KR312

C338

C330

15pF

10pF

R314

330

3K

R313

30KR311

C326.01uF

Q302R351

0

3.3KR352

12KR315

680nHL330

.01uFC325C323

150pF

20pFC324

750nHL311

GN

D2

4

GN

D3

5

OUT3

IN6

TBDXTALFL301

GN

D1

GN

D1

2

IF

10uFC382

C3480.1uF

0.1uFC329

2.20uHL331 R343

10

0.1uFC344

Vdd_FILTERED

(SOURCE)

C3430.22uF

0.1uFC347

0.1uFC346

Vdda

.022uFC334

0.1uFC359

1200pFC358

R34412K

0.22uFC357

16.8M

CLKDATA

LVZIF_SEL

0.1C3

DA

C36110nF

C360.022uF

RSSI

SH323SHIELD

1

CRYSTAL FILTER SHIELD

[email protected]

[email protected]

0.706V

2.683V

Page 170: Motorola Gp328 338 Service Manual

6C-18 Circuit Board/Schematic Diagrams and Parts List

_16.8MHZY201

NU

NUR206

SYNTHESIZER TOP SHIELD SYNTHESIZER BOTTOM SHIELD

SHIELDSH201

SHIELDSH202

L23212uH

47KR204

CR203

C238470pF

1.6pFC208

T3

4.3KR255

30R256

R5

120

R232620

R231

0.1uFC233

560R233

C2310.1uF

C2340.47uF

C232.047uF

TP2021

MODOUT

100pFC277

2.2uFC278

4V_3.3V

C2792.2uFpF

20

GND2

NC

4

3

ON

_OF

F*

VIN

1

VO

UT

5

U248LP2980

940pF 0.47uF

C293

Vdda

SWB+

VCTRL

7.5V

3.3V

[email protected]@527MHz

UHF B

http

://w

ww.m

yrad

io16

8.na

me

VMULT3VMULT4

WARP

XTAL1XTAL2

SFOUT

TEST1TEST2

VMULT1VMULT2

INDMULT

IOUT

LOCK

MODOUTFREFOUT

IADAPT

AUX1AUX2AUX3AUX4

ADAPTSW

PD

_GN

DP

RE

_GN

D

DG

ND

AG

ND

SFCAP

SFIN

VBPASS

PREIN

PVREF

REFSEL

SFBASE

MODIN

NC1NC2NC3

CCOMP

CEXCLK

DATA

BIAS1BIAS2

VR

OV

CP

PD

_VD

DP

RE

_VD

D

DV

DD

AV

DD

141211

25

2324

28

3738

15

16

43

4

4119

45

48123

46

13 475 34 3620

26

30

21

32

35

18

27

10

172931

98

7

4039

42

44336 22

63A27U201

C2042.2uF

C264100pF

C2630.75pF

C214100pF 100pF

C211R201

R202100K

82K

DATA

100pFC212C210

100pF

L26139nH

MODIN

CLKCSX

PRESC

C2021000pF100pF

C201

VSF

TP2011

330pFC206R281

4.7uFC203

C20756pF

NU

NU

NU

R205

C215

FADJ 2

GN

D4

OUT3

VD

D

1

5V

C216

OSC

NU

1GND GND1

4

OUIN6

FL201

75Z04

100pFC260

100pFC213

5V

LOCK

AUX4

AUX3

Q210

2

4

1

3

16.8MHz

10K

47K

4.7K47K

100C2

C210

2.2uFC235C223

0.1uF

C2240.1uF

L2012.2uH

L2032.2uH

0.47uFC291

C2180.1uF

C2172.2uF

4OUT 3

SD

ADP3300U247

6ERR

1

GN

D

5IN

2NR

0.22uFC219

L2022.2uH

0.1uFC298

C2920.1uF

5V(SOURCE)

C282C283

3 K3

CR201

A1 6A2 5A3 4

K112 K2

NUNU

C2291000pF100pF

C230

.01uFC258

C2284.7uF

C259.01uF

TC7ST04FUU210

3GND

2

1NC

4

5VCC

0.1uFC296

5VCC

TC7ST04FUU211

3GND

2

1

NC

4

C257100pFC265

NU

1.65V

Low (mV)

High (3.3V) High (3.3V)

1.5V

2.3V

3.3V

Rx3.7V1.6V

Tx1.6V3.7V

39 Bias240 Bias1

and 2 Synthesizer Schematic Diagram

Page 171: Motorola Gp328 338 Service Manual

Circu 6C-19

.7pF45

L243

RESONATOR

1

2

3

4.3pFC250

4.3pFC242

4.3pFC243

1 2

CR243

A1 A2

CR241

C241100pF

22nHL242

390nHL241

CR242

24310K

C2443.6pF

Rx_sw

C2470.1uFC248

100pF

C2531.5pF

100pFC251CR251

20pFC252

390nHL251

VSF

VCTRL

RX_I

TX_I

[email protected]@527MHz

UHF Band 2 Voltage Controlled Oscillator Schematic Diagram

http

://w

ww.m

yrad

io16

8.na

me

it Board/Schematic Diagrams and Parts List

TX_IADJ1

TX_OUT10

TX_SWITCH13

VC

C_B

UF

FE

RS

14

VC

C_L

OG

IC

18

RX_EMITTER6

RX_IADJ2

RX_OUT8

RX_SWITCH7

SUPER_FLTR3

TRB_IN19

TX_BASE16

TX_EMITTER15

COLL_RFIN4

FLIP_IN20

GN

D_B

UF

FE

RS

11G

ND

_FLA

G917

GN

D_L

OG

IC

PRESC_OUT12

RX_BASE5

50U54

U241

Rx_sw

Tx_sw

C2730.1uF1.1pF

C272

L27318nH

27nH

1pF

L271

C271

R245240

C2762.2uF

100pFC281

390nHL281

0.1uFC286

100pFC246

2C2

120R242

100pFC285

R24118

15KR244

R

1

3

2 Q241BFQ67W

30R248

L282390nH

R2537.5K

Tx_sw

C2543.3pF

R25133

L253

RESONATOR

1

2

3

100pFC289

100pFC255

R252270

R2548.2K

1KR260

4

1

3

Q261

2

10K

47K

47K

4.7K

2

4

1

3

Q260

C297.01uF

10K

4.7K

47K

47K

1

SHIELDSH242

1

SHIELDSH241

VCO TOP SHIELD VCO BOTTOM SHIELD

AUX 4

AUX 3

5V

VSF

PRESC

NJ

NJ

4.6V

2V

4.6V

Page 172: Motorola Gp328 338 Service Manual

6C-20 Circuit Board/Schematic Diagrams and Parts List

VL6 VLIM 19

TE

MP

30

V10

14

V45

16

17V5EXT

20VAR1

18VAR2

24VAR3

VG

15

22NA

Q11

QX

10

1 RFIN

RS 21

31R

SE

T

RX 23T12

CLK

26

CQ

12

CQ

X13

DA

TA

28

F16

89

GND18

GN

D2

25

INT4U102H99S

AN

O32

BP

OS

27

CE

X29

CI3

CJ5

CL7

C138100pF

CR105

GND

3

1

PO

S

2VOUT

R131

LM50

10KR130

18K

100pFC170

C110100pF

0.1uFC126

.022uFC173

5V

TX_BIAS

RESET

UNSWB+

DATA

CLK

CSX

100pFC122

C105100pF

4

1

3

100pFC132

Q111

2

6

100pFC174

R133

UNSWB+

NU

10K

4.7K47K

47K

C1343300pF

C135.022uF

6pF

.022uFC131

390nHL114

100KR132

UNSWB+

RF

IN6

RF

OU

T1

7R

FO

UT

21

VC

NT

RL

14V

D1

2V

G1

3V

G2

GND1 5GND2 12GND3 13GND4

8N

C1

9N

C2

10N

C3

15N

C4

16

U10109Z67

11G

2 4

100pFC130

C128.022uF

390nHL112

R1085.6K

.022uFC152

UNSWB+

7.01V Tx

7.08V Tx

0.269V Tx

UHF B

http

://w

ww.m

yrad

io16

8.na

me

1000pFC127

L115 C133390nH 1000pF

C16100

L113

C129

5.6nH

6.8pF

100pFC165

200KR109

2pFC169

9.1pFC120

100pFC121

C150.022uFC151

100pF

C1610.1uF

200R161

L16015.0nH

56pFC160

11pFC116 C117

10pF

11.03nHL109

4.22nHL108

10R106

100pF

C115

C118

27pF

C125100pF

100pFC295

300R112R110300

20R111

R107

C180

TX_INJ_1

TX_INJ

NU

NU

Microstrip Microstrip1

2

3C11113.0pF

C11236pF

L10733.47nH

0.1R102

L11722.0nH

C11315pF

BEADE101

C114100pF

C12310uF

200R172

0.1uFC172

C181

Q110 Microstrip

NU

L105C108100pF

390nH

240R170

240R101

C109100pF 7.66nH

L106

UNSWB+

3.3pF

1

A1

2

A2

K 3

C107

CR102

L10412.39nH

4.7pFC106

RX_IN

CR101

L10212.39nH12.39nH

L101

6.2pFC104C103

13pFC1026.2pF

C101100pF

4GND

1

2

3

J101RF_JACK

C141

TAB5 5

C140

TAB11TAB22

TAB3 3TAB4 4

ANTENNA_NUTJ102

9.75nHL116

HEATSINKH101

POS1

NU

NU

43KR120

100pFC119

100pFC171 R173

180K 43KR171

R174NU

SH100SHIELD

1

SHIELDSH101

1

HF SHIELD PA SHIELD

R10447K

C18836pF

3dBM@450MHz Tx3dBM@527MHz Tx

and 2 Transmitter Schematic Diagram

Page 173: Motorola Gp328 338 Service Manual

Circu 6C-21

UHF

CircR

B501B503B504C101C102C103C104C105C106C107C108C109C110C111C112C113C114C115C116C117C118C119C120C121C122C123C125C126C127C128C129C130C131C132C133C134C135C138C140C141C150C151C152C160C161C165C166C169C170

.250.25+80%/-20%

10%; 20V

+80%/-20%

F, 10%+80%/-20%

F, 10%

+80%/-20%10%+80%/-20%0.25

0.10.5

+80%/-20%

+80%/-20%

0.5

+80%/-20%

0.10.50.50.50.5

10%10%

+80%/-20%+80%/-20%

Description

C333 Not PlacedC334 2113743M08 .022uF, +80%/-20%C336 2113743M24 0.1uF, +80%/-20%C337 2113743N50 100pFC338 2113743N30 15pFC339 2180478Z20 1.0uF, 10%C340 2180478Z20 1.0uF, 10%C341 2180478Z20 1.0uF, 10%C342 2180478Z20 1.0uF, 10%C343 2113743A23 0.22uF, 10%C344 2113743M24 0.1uF, +80%/-20%C345 2113743M24 0.1uF, +80%/-20%C346 2113743M24 0.1uF, +80%/-20%C347 2113743M24 0.1uF, +80%/-20%C348 2113743M24 0.1uF, +80%/-20%C349 2113743E07 .022uF, 10%C350 2113743L05 330pF, 10%C351 2113743N33 20pFC352 2113743N28 12pFC353 2113743N41 43pFC354 2113743N42 47pFC355 2113743A24 0.33uF, 10%C356 2113743M08 .022uF, +80%/-20%C357 2113743A23 0.22uF, 10%C358 2113741A23 1200pFC359 2109720D14 0.1uFC360 2113743E07 .022uF, 10%C361 2113741F49 0.1uF, 10%C362 2113743M08 0.022uFC363 2311049A40 2.2uF, 10%; 16VC364 2113743L41 0.01uFC370 2113743N50 100pFC371 Not PlacedC372 Not PlacedC373 Not PlacedC374 2113743N50 100pFC375 2113743N50 100pFC378 Not PlacedC380 2113743L41 .01uF, 10%C381 2113743N18 4.7pF, 0.5C382 2311049A59 10uF, 10%; 6VC383 2113743N50 100pFC384 2113743N44 56pFC385 2113743N44 56pFC386 2113743N50 100pFC390 2113743N50 100pFC391 Not PlacedC395 2113743N50 100pFC396 Not PlacedC397 2311049A07 1uF, 10%; 16VC400 2113743L41 .01uF, 10%

CircuitRef

MotorolaPart No. Description

http

://w

ww.m

yrad

io16

8.na

me

it Board/Schematic Diagrams and Parts List

Band 2 Radio Parts List

uitef

MotorolaPart No. Description

0986237A01 Battery Contact Module3980502Z01 Backup Batt Contact+3980501Z01 Backup Batt Contact-2113740F51 100pF2113740F22 6.2pF, 0.12113740F30 13pF2113740F22 6.2pF, 0.12113743N50 100pF2113740F19 4.7pF, 0.12113740F15 3.3pF, 0.12113743N50 100pF2113740F51 100pF2113743N50 100pF2103689A23 13pF, ±0.052180605Z29 36pF2180605Z20 15pF2113743N50 100pF2113743N36 27pF2113743N27 11pF2113743N26 10pF2113743N50 100pF2113743N50 100pF2113743N25 9.1pF2113743N50 100pF2113743N50 100pF2311049A18 10uF, 10%; 16V2113743N50 100pF2113743M24 0.1uF, +80%/-20%2113743L17 1000pF, 10%2113743M08 .022uF, +80%/-20%2113743N22 6.8pF, 0.52113743N50 100pF2113743M08 .022uF, +80%/-20%2113743N50 100pF2113743L17 1000pF, 10%2113743L29 3300pF, 10%2113743M08 .022uF, +80%/-20%2113743N50 100pFNot PlacedNot Placed2113743M08 .022uF, +80%/-20%2113743N50 100pF2113743M08 .022uF, +80%/-20%2113743N44 56pF2113743M24 0.1uF, +80%/-20%2113743N50 100pF2113743N50 100pF2113743N09 2pF, 0.252113743N50 100pF

C171 2113743N50 100pFC172 2113743E20 0.1uF, 10%C173 2113743M08 .022uF, +80%/-20%C174 2113743N50 100pFC201 2113743N50 100pFC202 2113743L17 1000pF, 10%C203 2311049A56 4.7uF, 20%; 10VC204 2104993J02 2.2uFC206 2113740F63 330pFC207 2113743N44 56pFC208 2113743N08 1.6pFC210 2113743N50 100pFC211 2113743N50 100pFC212 2113743N50 100pFC213 2113743N50 100pFC214 2113743N50 100pFC217 2104993J02 2.2uFC218 2113743M24 0.1uF, +80%/-20%C219 2113743K16 0.22uF, +80%/-20%C220 2113743N50 100pFC223 2113743M24 0.1uF, +80%/-20%C224 2113743M24 0.1uF, +80%/-20%C228 2311049J11 4.7uF, 10%; 16VC229 2113743L17 1000pF, 10%C230 2113743N50 100pFC231 2113743M24 0.1uF, +80%/-20%C232 2113743E12 .047uF, 10%C233 2311049A01 0.1uF, 10%; 35VC234 2311049A05 0.47uF, 10%; 25VC235 2104993J02 2.2uFC238 2113741F17 470pFC241 2113743N50 100pFC242 2113743N18 4.7pF, 0.5C243 2113743N18 4.7pF, 0.5C244 2113740F14 3pF, 0.25C245 2113743N12 2.7pF, 0.25C246 2113743N50 100pFC247 2113743N50 100pFC248 2113743M24 0.1uF, +80%/-20%C250 2113743N18 4.7pF, 0.5C251 2113743N50 100pFC252 2113743N33 20pFC253 2113740F07 1.5pF, 0.25C254 2113743N14 3.3pF, 0.25C255 2113743N50 100pFC257 2113743N50 100pFC258 2113743L41 .01uF, 10%C259 2113743L41 .01uF, 10%C260 2113743N50 100pFC263 2113743N02 0.75pF, 0.25C264 2113743N50 100pF

CircuitRef

MotorolaPart No. Description

C265 Not PlacedC271 2113743N03 1pF, 0C272 2113743N04 1.1pF,C273 2113743M24 0.1uF,C276 2104993J02 2.2uFC277 2113743N50 100pFC278 2311049A57 10uF,C279 2104993J02 2.2uFC281 2113743N50 100pFC285 2113743N50 100pFC286 2113743M24 0.1uF,C289 2113743N50 100pFC291 2113743A27 0.47uC292 2113743M24 0.1uF,C293 2113743A27 0.47uC294 2113743N50 100pFC295 2113743N50 100pFC296 2113743M24 0.1uF,C297 2113743L41 .01uF,C298 2113743M24 0.1uF,C301 2113743N24 8.2pF,C302 2113743N28 12pFC303 2113740L09 4.3pF,C304 2113743N27 11pF,C305 2113743N24 8.2pFC306 Not PlacedC307 2113743M24 0.1uF,C308 2113743N50 100pFC309 2113743N50 100pFC310 2113743M24 0.1uF,C311 Not PlacedC312 2113743N23 7.5pF,C313 2113743N27 11pFC314 2113743M24 0.1uF,C315 2113743N50 100pFC316 2113740L09 4.3pF,C317 2113743N27 11pF,C318 2113743N23 7.5pF,C319 2113743N15 3.6pF,C320 2113743N23 7.5pF,C321 2113743N50 100pFC322 2113743N48 82pFC323 2113743N54 150pFC324 2113743N33 20pFC325 2113743L41 .01uF,C326 2113743L41 .01uF,C327 2113743N50 100pFC328 2113743M24 0.1uF,C329 2113743M24 0.1uF,C330 2113743N26 10pFC331 2113743N50 100pF

CircuitRef

MotorolaPart No.

Page 174: Motorola Gp328 338 Service Manual

6C-22 Circuit Board/Schematic Diagrams and Parts List

C401C402C403C407C408C409C410C411C414C415C416C419C420C421C422C423C424C425C426C427C428C429C430C431C432C433C434

C435C436

C437

C440C441C442C443C444C445C447C448C449C450C451C452C453C456C458C459C463C466

CircuiRef

/Yelhottky, RB731Uhottky, RB731Uhottky, RB731Ueadeadeadeadeadeadeadeadeadeadead

Xtal (SMD)r 45.1MHz38.4kHzin GP328eaderAssemblyNutonnectoronnector

, 10%, 10%, 10%0%

10%, 10%10%, 10%0%

%0%0%

10%5%0%0%0%

0%

esonator%

esonator

escription

L273 2462587V25 18nH, 5%L281 2462587V41 390nH, 10%L282 2462587V41 390nH, 10%L301 2460591B04 11.03nH, 10%L302 2460591B04 11.03nH, 10%L303 2462587V26 22nH, 5%L304 2462587V37 180nH, 5%L305 2462587V23 12nH, 5%L306 2460591B04 11.03nH, 10%L307 2460591B04 11.03nH, 10%L309 2460591C16 16.28nH, 10%L310 2462587V36 150nH,5%L311 2462587N65 750nH,5%L314 2462587N72 2.2uH, 5%L321 Not PlacedL325 2480646Z20 2.2uHL330 2462587N64 680nH, 5%L331 2480646Z20 2.2uHL332 2462587N53 100nH, 5%L340 2462587V41 390nH, 10%L400 2462587Q42 390nH, 10%L401 2462587Q42 390nH, 10%L410 2462587Q42 390nH, 10%L411 2462587Q42 390nH, 10%L505 2462587Q42 390nH, 10%P100 3905643V01 Gnd Contact FingerPB501 4080523Z01 Tactile, PushbuttonPB502 4080523Z01 Tactile, PushbuttonPB503 4080523Z01 Tactile, PushbuttonPB504 4080523Z01 Tactile, PushbuttonPB505 4080523Z01 Tactile, PushbuttonQ110 4802245J55 RF Power FETQ111 4802245J50 Dual NPN/PNPQ210 4802245J50 Dual NPN/PNPQ241 4805218N63 NPNQ260 4802245J50 Dual NPN/PNPQ261 4802245J50 Dual NPN/PNPQ301 4802245J44 NPNQ302 4802245J44 NPNQ310 Not PlacedQ315 4880214G02 NPNQ316 Not PlacedQ320 4805218N63 NPNQ400 4809579E18 MOSFET P-ChanQ403 4880214G02 NPNQ405 4802245J54 Dual NPNQ410 4802245J54 Dual NPNQ416 4809579E18 MOSFET P-Chan

not used in GP328Q417 4802245J50 Dual NPN/PNPQ502 5180159R01 Dual NPN

CircuitRef

MotorolaPart No. Description

http

://w

ww.m

yrad

io16

8.na

me

2113743M24 0.1uF, +80%/-20%2113743M24 0.1uF, +80%/-20%2113743G24 2.2uF, +80%/-20%2113928N01 0.1uF, 10%2113743N50 100pF2113743M24 0.1uF, +80%/-20%2113928N01 0.1uF, 10%2113743M24 0.1uF, +80%/-20%2113743M24 0.1uF, +80%/-20%2109720D01 .01uF, 10%2113928N01 0.1uF, 10%Not Placed2113743L41 .01uF, 10%2113928N01 0.1uF, 10%2113743M24 0.1uF, +80%/-20%2113743N50 100pF2311049A59 10uF, 10%; 6V2113743M24 0.1uF, +80%/-20%2113743N50 100pF2113743N50 100pF2113743M24 0.1uF, +80%/-20%2113743M24 0.1uF, +80%/-20%2113928N01 0.1uF, 10%2113743N50 100pFNot Placed2113743L41 .01uF, 10%2113743M24 0.1uF, +80%/-20%

not used in GP3282113743M24 0.1uF, +80%/-20%2113743N34 22pF

not used in GP3282113743N34 22pF

not used in GP3282113743G26 4.7uF, +80%/-20%2113743N50 100pF2113743E20 0.1uF, 10%2113928N01 0.1uF, 10%2113743N50 100pF2113743N50 100pF2113743M08 0.22uF, 10%2113928N01 0.1uF, 10%2113743N50 100pF2113743M24 0.1uF, +80%/-20%2113743M08 .022uF, +80%/-20%2113743G26 4.7uF, +80%/-20%2113743N50 100pF2113743N50 100pF2113743N50 100pF2113743N50 100pF2113743N50 100pF2113743N50 100pF

t MotorolaPart No. Description

C467 2113928N01 0.1uF, 10%C471 2113743LN50 100pFC472 2113743L09 470pFC473 2113743L09 470pFC475 2113743H14 10uF, +80%/-20%C476 2113928D08 10uF, +80%/-20%C479 2113928N01 0.1uF, 10%C480 2113928D08 10uF, +80%/-20%C481 2113928N01 0.1uF, 10%C482 2113928N01 0.1uF, 10%C490 2113743N50 100pFC491 2113743N50 100pFC492 2113743N50 100pFC493 2113743N50 100pFC494 2113743N50 100pFC495 2113743N50 100pFC496 2113743N50 100pFC497 2113743N50 100pFC502 2311049A05 0.47uF, 10%; 25VC503 2113743N50 100pFC505 2113743N50 100pFC511 2113743N50 100pFC512 2113743N50 100pFC513 2113743N50 100pFC514 2113743N50 100pFC520 2113743L41 .01uF, 10%C521 2113743L41 .01uF, 10%C522 2113743L41 .01uF, 10%C523 2113743L41 .01uF, 10%CR101 4880973Z02 Pin DiodeCR102 4802245J41 Pin DiodeCR105 5185963A15 Temperature SenseCR201 4802233J09 Triple DiodeCR203 4862824C03 VaractorCR241 4805649Q13 Dual VaractorCR242 4862824C01 VaractorCR243 4862824C01 VaractorCR251 4862824C01 VaractorCR301 4862824C01 VaractorCR302 4862824C01 VaractorCR303 4880154K03 Dual Common Anode-Cath-

odeCR304 4862824C01 VaractorCR305 4862824C01 VaractorCR306 4802245J42 Ring Quad DiodeCR308 4802245J41 Pin DiodeCR310 4862824C01 VaractorCR411 4802245J47 Schottky DiodeCR412 4802245J47 Schottky DiodeCR413 4802245J47 Schottky DiodeCR440 4813833C02 Dual Diode Common Cathode

CircuitRef

MotorolaPart No. Description

CR501 4880107R01 RectifierCR503 4805729G49 LED RedD401 4802245J62 Diode ScD402 4802245J62 Diode ScD403 4802245J62 Diode ScE101 2484657R01 Ferrite BE400 2480640Z01 Ferrite BE401 2480640Z01 Ferrite BE402 2480640Z01 Ferrite BE403 2480640Z01 Ferrite BE404 2480640Z01 Ferrite BE405 2480640Z01 Ferrite BE406 2480640Z01 Ferrite BE407 2480640Z01 Ferrite BE408 2480640Z01 Ferrite BE409 2480640Z01 Ferrite BF501 6580542Z01 Fuse 3AFL201 4805875Z04 16.8MHzFL301 4802245J43 Xtal FilteFL401 4870368G02 Osc Xtal

not usedH101 2680499Z01 Heat SprJ101 0180117S05 RF JackJ102 0280519Z02 AntennaJ400 0905505Y04 40-pins CJ403 0905505Y02 20-pins CL101 2460591B24 12.39nHL102 2460591B24 12.39nHL104 2460591B24 12.39nHL105 2462587N22 390nH, 1L106 2460591A11 7.66nH,L107 2460591G24 33.47nHL108 2460591A01 4.22nH,L109 2460591B04 11.03nHL112 2462587N22 390nH, 1L113 2413926H09 5.6nH, 5L114 2462587N22 390nH, 1L115 2462587N22 390nH, 1L116 2460591A50 9.75nH,L160 2413926H14 15.0nH,L201 2462587Q20 2.2uH, 2L202 2462587Q20 2.2uH, 2L203 2462587Q20 2.2uH, 2L232 2462587P25 12uH, 5%L241 2462587V41 390nH, 1L242 2462587V26 22nH, 5%L243 2460593C03 Teflon RL251 2462587V41 390nH, 5L253 2460593C03 Teflon RL261 2462587V29 39nH, 5%L271 2462587V27 27nH, 5%

CircuitRef

MotorolaPart No. D

Page 175: Motorola Gp328 338 Service Manual

Circu 6C-23

Q50R101R102R103R104R106R107R108R109R110R111R112R120R130R131R132R133R161R170R171R172R173R201R202R204R231R232R233R241R242R243R244R245R248R251R252R253R254R255R256R260R281R300R301R302R303R304R305R306R307R308

CircR

1%%

ed in GP328Ged in GP328

ed in GP328

ed in GP328

ed in GP328

Description

R506 0662057N15 47KR507 0662057M01 0RT300 0680590Z01 Thermistor 33KRT301 Not PlacedRT400 0680590Z01 Thermistor 33KS501 *4080710Z01 Channel SwitchS502 1880619Z01 Volume SwitchSH100 2680507Z01 Harmonic Filter ShieldSH101 2680510Z01 PA ShieldSH201 2680511Z01 Synthersizer Top ShieldSH202 2680511Z01 Synthersizer Bottom ShieldSH241 2680513Z01 VCO Top ShieldSH242 2680514Z01 VCO Bottom ShieldSH301 2680554Z01 Rx Pre-filter shield\SH302 2680555Z01 Rx Post-filter/RF Amp ShieldSH303 2680509Z01 Mixer ShieldSH304 2680624Z01 Mixer Diode ShieldSH321 2680508Z01 Zif 2nd LO ShieldSH322 2680514Z01 ZIF ShieldSH323 2680553Z01 Xtal Filter ShieldSH400 2680505Z01 Controller Memory ShieldSH401 2680506Z01 Controller On/Off ShieldSH402 2680515Z01 Controller Microprocessor

ShieldSH403 2680516Z01 Controller AsficCmp/Audi PA

ShieldT301 2580541Z01 XFMR CoilT302 2580541Z01 XFMR CoilU101 5105109Z67 LDMOS DriverU102 5185765B01 Power Control ICU201 5185963A27 LVFRACNU210 5102463J61 InverterU211 5102463J61 InverterU241 5105750U54 VCO BufferU247 5105739X05 Regulator LinearU248 5102463J58 3.3V RegU301 5109632D83 LVZIFU400 5102463J40 3.3V RegU404 5185963A53 AsficCmpU405 Not PlacedU406 *5102463J59 Flash ROM 128K x 8U407 *5102463J64 EEPROM 16K x 8U409 5102226J56 up HC11FL0U410 5102463J57 3.3V Reg

not used in GP328U420 5102463J44 Audio PAVR300 Not PlacedVR432 4805656W08 5.6V ZenerVR433 4805656W08 5.6V ZenerVR434 4802245J51 6.8V ZenerVR439 4880140L15 10V Zener

CircuitRef

MotorolaPart No. Description

http

://w

ww.m

yrad

io16

8.na

me

it Board/Schematic Diagrams and Parts List

5 4880214G02 NPN0662057A34 2400680539Z01 0.1, 1%Not Placed0662057N15 47K0662057M26 10Not Placed0662057M92 5.6K0662057N30 200K0662057M61 3000662057M33 200662057M61 3000662057N14 43K0662057M98 10K0662057N05 18K0662057N23 100KNot Placed0662057M57 2000662057A34 2400662057N14 43K0662057A32 2000662057N29 180K0662057N21 82K0662057N23 100K0662057N15 47K0662057M52 1200662057M69 6200662057M68 5600662057M32 180662057M52 1200662057M98 10K0662057N03 15K0662057M59 2400662057M37 300662057M38 330662057M60 2700662057M95 7.5K0662057M96 8.2K0662057M89 4.3K0662057M37 300662057M74 1KNot Placed -0662057M82 2.2K0662057N23 100K0662057N23 100K0662057M78 1.5K0662057N01 12K0662057M66 4700662057N23 100K0662057N23 100K0662057M60 270

uitef

MotorolaPart No. Description

R309 0662057M32 18R310 0662057M60 270R311 0662057N10 30KR312 0662057M83 2.4KR313 0662057M62 330R314 0662057M85 3KR315 0662057N01 12KR316 0662057A96 36KR317 0662057M74 1KR318 0662057A79 18KR319 0662057A29 150R320 0662057M74 1KR321 0662057M83 2.4KR322 0662057N30 200KR324 0662057M81 2KR325 0662057M94 6.8KR326 Not PlacedR327 0662057N11 33KR328 0662057M12 2.7R329 0662057M01 0R330 Not PlacedR331 Not PlacedR332 Not PlacedR333 Not PlacedR334 Not PlacedR335 Not PlacedR336 Not PlacedR338 Not PlacedR339 0662057M01 0R340 0662057M96 8.2KR342 0662057N23 100KR343 0662057M26 10R344 0662057N01 12KR345 0662057M98 10KR346 0662057N17 56KR347 0662057M74 1KR348 0662057M87 3.6KR349 0662057C01 0R350 0662057N23 100KR351 0662057C01 0R352 0662057M86 3.3KR355 0662057M01 0R400 0662057N15 47KR401 0662057M01 0R402 Not PlacedR403 Not PlacedR405 0662057M01 0R406 0662057N20 75KR407 0662057N19 68KR408 Not PlacedR409 0662057M98 10K

CircuitRef

MotorolaPart No. Description

R410 0662057N23 100KR411 0662057M98 10KR413 0662057M01 0R414 0662057V34 180K,R415 0662057V26 91K, 1R416 0662057N13 39KR418 0662057M01 0R419 0662057M67 510

not usR420 0662057B46 10ME

not usR421 0662057M81 2KR423 0662057N39 470KR424 0662057N12 36KR425 0662057N10 30KR426 0662057N35 330K

not usR427 0662057M84 2.7KR428 0662057M10 2.2R429 0662057M98 10KR431 0662057N39 470KR432 0662057N16 51KR434 0662057M62 330KR435 0662057M81 2KR436 0662057M01 0R437 Not PlacedR445 0662057N08 24KR446 0662057N31 220KR447 0662057N51 1.5MR448 0662057N33 270KR449 0662057N08 24KR450 0683962T45 68, 1WR457 0662057M98 10KR460 0662057M90 4.7KR461 0662057M56 180

not usR462 0662057M98 10K

not usR463 0662057M61 300R471 0662057M92 5.6KR472 0662057N12 36KR473 0662057M26 10R475 0662057M01 0R476 0662057N35 330KR477 0662057M74 1KR478 0662057M98 10KR481 0662057N08 24KR492 0662057M01 0R501 0662057M70 680R502 0662057M56 180R505 0662057M98 10K

CircuitRef

MotorolaPart No.

Page 176: Motorola Gp328 338 Service Manual

6C-24 Circuit Board/Schematic Diagrams and Parts List

VR440VR441VR442VR443VR444VR445VR446VR447VR448VR449VR450VR501VR506

CircuiRef

http

://w

ww.m

yrad

io16

8.na

me

* Motorola Depot Servicing only

4802245J51 6.8V Zener4802245J51 6.8V Zener4802245J51 6.8V Zener4802245J51 6.8V Zener4802245J51 6.8V Zener4802245J53 10V Zener4802245J53 10V Zener4802245J53 10V Zener4802245J53 10V Zener4802245J53 10V Zener4802245J53 10V Zener4813830A18 6.8V Zener4802245J51 6.8V Zener

t MotorolaPart No. Description

Page 177: Motorola Gp328 338 Service Manual

Circu 6C-25

8.0

PB505

C505

C502

C521

PB501

VR440

C511

C512 C513

C514

C520

CR503

2

3 4

Q505

Q502

R506

R507

R505

R502

R501VR443

VR501

C140

C141

L116

C101

C102

C104C103

C106

C107

C188

CR101

CR102

L101L102

L104

L105

SH100

SH301

C308

C304

C301

C305

C302

C303

CR301

CR302

L301

L302

R301

R302

C331

C396C333

CR308

R342

R317R336

C362

C384

C385C351

C364

C352

C349 C350

C353

C35

4

C363CR310

L325

L332

Q320R355

R322

R34

5

R320

R321

R32

4

R34

6

SH321

4

C397

Q315

338

R300

R316

18

R319

325

R334

335

T300

301

VR300

C381

0

3

2

Q110

1

C109

C111L106

119

171

174

120R173

75

76

C113 C181

ZMY0130258-A

HF Band 2 (450-527MHz) Main Board Top Side PCB No. 8485641Z06

http

://w

ww.m

yrad

io16

8.na

me

it Board/Schematic Diagrams and Parts List

Circuit Board/Schematic Diagrams and Parts List

40

J400

1R418

U406

116

1732

C423 E407

E408

E409 R437

R410

U405

17

8 21

22

C426 C425

8

5 4

1

U407

C427 C428

C429

C424R408

R492

R429

R478

R428

SH400

C404

C444C443R435

RT400

TP401

TP402

C471C472

C473

L401TP410

VR447

VR449

21

1

J403

20

22

C441

C490

C491

C492

C493

C494

C495

C496

C497

CR413L400

Q41734

R477

R421

R450

TP405 TP406

VR434VR450 SH401

TP415

C401

C402

C400

C406

C467

C482

C403

C480

CR412

CR440

Q400

Q403

Q405

34

R401R402

R403

R405

R454

R455R456

R416

R448R447

R452

R451

R406R407

R427

R476

R481

R453

U400

85

4

B503 B504

C216C432

FL201

1 3

46

PB502PB503

TP201

C210C211

C212C213

C214

C220

C230

C257

C260

C294

C292

C229

C282

C283

C203

C217

C235

C228

C233

C238

C297

C291

CR201

L201 L202

L203

L232

Q210

34

Q26034

R206

R256

R255

SH201

U247

TP202

TP302

C247C251

C285

C289

C370

C374

C386

C248 C273

C286

C276

C253

C271C272

L282

L243

3

L253

3

L271

L273

L321

Q26134

Q241

R333R339

R243

R248

R253

R260

SH241

PB50

C324

C325

C323

FL301

L311

R351

R352

SH323

C328

C391

Q316

R326R

R314

R3

R

R327

R

R

RT

VR444

C375 C320C319

C322

L309

L31R309

R308

R310

R348

SH303

T301

3 4

6

T302

34

6

C112

L114

L115

L107

L108

U101

9

8

16

1

C110C114

C166

C131

C122C125C165

C161

C129C169

L113

R161

SH101

C118C

C121

C

C115

C116

C117

C120

C127

C160

C180

L117L160

R104R106R107

RR108

R

R171

R1

R1

R191

U

Page 178: Motorola Gp328 338 Service Manual

6C-26 Circuit Board/Schematic Diagrams and Parts List

C108

CR103

CR160

M100

P100

Q111

34

R101

R170

C309

C315

C321

C307

C310C314

306

C311

CR303

L340L303

L304L305

Q301

R340

R347R303

R304

R305 R328

SH302

C383

C390

C345

C346

C347

C334

356

C339C340C341C342

C343

C357C358

C359

1

R344

SH322

25

37

301

2

35

4

4

C

8

C S501

2

1

J101

4

3

2

J102

S502

ZMY0130259 -A

UHF B

http

://w

ww.m

yrad

io16

8.na

me

M400

E404

E406

C449

C453

C456

C458

C459

C463

C466

C524

C525

C526

C527

C528C529

E400

E401

E402

E403

E405

L410

L411

R409 R411R457

R432

R461

U409

26 51

761

C431

C434

C435

C433

C436C437

CR411

3

FL401

Q416

R463

R462

R414

R415

R419

R420R426

R460

U410

SH402

C40

5

C408C445

C409

C41

1

C414

C422

C450 C451

C415

C442 C41

9

C42

0

C40

7

C410

C416

C42

1

C430

C447

C448C479

C481

C476

C440

C452

C475

M401

Q410

34

R400

R473

R41

3

R436

R475

R471

R498

R499

R423

R42

5

R43

4

R424

R431

R445

R449

R472

SH403

13

25 37

1

U404U420

10

20

1

11

VR432

VR433VR460

VR445

VR446

VR448

C277

C215

C279

C522C523

C278

L505

R205U248

VR441VR442

VR506

Y201

4

3

2

C201

C264

C218

C223

C224

C231

C296

C29

8

C20

2

C265

C204

C206 C207

C208

C219

C232

C234

C258C259

C263C293CR203 L261

R204

R281

R202

R201

R231

R232R233

SH202

13

25 37

1

U201U210

3

4

U211

34

C241

C246

C25

5

C281C295

C372C371

C373C378

C242

C243

C250

C244

C245C252 C254

CR241

CR242

CR243

CR251

L241L251

L281 L242

M300

Q310

R330

R332R110

R112R111

R349

R242R241

R244

R245

R251

R25

2

R254

R331

SH242

U241

10

20 1

11

B501

3

2

1

C503

CR501

F501

M101

C327

C330

C326

C338

L330

Q302

R315

R311

R312

R313

CR306

SH304

C123 E101

R329VR439

C105

C130

C138C151

C170

C174

C126

C133

C128

C135

C150C152

C134

L112R102

R109

R130

R131R132

R136

25

9 17

U102

1

C132

C173

C172

CR105

H101

R133

R172

C395

C313

C317CC380

C316

C312C318

CR304CR305

L306L307

R306R307

C337

C329C336

C344

C348 C

C360

C355

C361

C382

L314

L331

M30

R343

R350 13

1

U

and 2 (450-527MHz) Main Board Bottom Side PCB No. 8485641Z06

Page 179: Motorola Gp328 338 Service Manual

Circu 6C-27

100pFC503 VR506

6.8V10VVR439

L505390nH

24V

21

F501

TT_CODE

BATT –

BATT +

RADIO_CODEBATTERY_CONTACT

CONN_J

B501

2 DATA1 NEG3 POS

6.8VVR443

12SWITCHPB505

.01uFC520

47KR506

050K

GREEN_LED

1

38

UHF Band 2 Controls And Switches Schematic Diagram

http

://w

ww.m

yrad

io16

8.na

me

it Board/Schematic Diagrams and Parts List

DEMOD

LVZIF_SEL

RSSI

16.8MHz

CLK

DACRx

DATA

Vdda

Vdda

RX_IN RX_INJ

R5

RECEIVER

DATA

CLK

DACRX

DEMOD

RSSI

LVZIF_SEL

16.8MHz

RX_INJ

SWB+

TX_INJ

Vdda

FGU

16.8MHz4V_3.3V

5V

CLK

CSX

DATA

LOCK

MODIN

R5CSX

4V_3.3V

SWB+

LOCK

MODIN

5V

DATA

RESETRX_IN TX_INJ

UNSWB+

TRANSMITTER

5V

CLK

CSX

5VUNSWB+

RESET

B503

B504

LI_ION

C505100pF

R5070

C5020.47uF

VR5016.8V

1

5

HIG

H

3 2

SWITCHS502

4

LOW

Vdda

VOL

MECH_SWB+

2

CR5011

BAUNSWB+

PB501

12SWITCH

.01uFC521

6.8VVR440

SB1

12

PB502SWITCH

C522.01uF

VR4416.8V

PB503

SB2

C523.01uF 6.8V

VR442

SWITCHPB504

12

12SWITCH

VR4446.8V

PTT

SB3

EMER

Q505

R51

Vdda

IMX1

51

6

24

3

SWB+

RED_LED

Q502

680R501

180R502

4

1 3CR503

2

RTA0

RTA1

RTA2

RTA3

100pFC514

100pFC513

100pFC511

100pFC512

SWITCHS501

GND GND

PCPC2C0C1

PC0PC1

4C0C1

12

7 9

Page 180: Motorola Gp328 338 Service Manual

6C-28 Circuit Board/Schematic Diagrams and Parts List

RX_I

4.7pFC381

R3290

C318

11pFC317

7.5pF

T301

4

6

3

1

2

XFMR

TP302

T302XFMR

46

31 2

C320 C3197.5pF 3.6pF

16.28nHL309R348

3.6K

R338R335

RT301

2 1

C391

NUNU

NUNU

R5

C370100pF

R330RSSI

RX_INJ

NUR331 C372

Q3101

3

2

C371

100pFC386

NU

NUNUNU

0R349

100pFC374

C378C373NU NU

C375

VCOBUF

100pF

R332

L321

0R339

R5

NU

NU

R333NU

R30918

82pFC322

L310150nH

270R308

270R310

2

34

1

CR306

IF50.125MHz26.925MHz

[email protected]

[email protected]@481.825MHz

-50dBm

UHF B

http

://w

ww.m

yrad

io16

8.na

me

L340390nH

HSMP38201

23

CR308

R3171K

100pFC395 C331

100pF

1KR347

R5

C311

100KR307R306

100K

CR304

C306

CR305

C3127.5pF

12nHL305

C31311pF

L30611.03nH11.03nHL307

4.3pFC316

NU

NU

R305470

R30412K

C321100pF

C309100pF

R3031.5K

Q301

13

2

C3070.1uF

0.1uFC314

180nHL304

C315100pF

C3100.1uF

R3282.7

L30322nH

R3408.2K

11.03nHL302

C308100pF

100KR301

12pFC302

C3058.2pF

CR301 CR302

4.3pFC303

11pFC304

R302

L301

100K

11.03nH 1

CR303

2

3

C3018.2pF

N

1

SH304SHIELD

1

SHIELDSH302

1

SHIELDSH301 SH303

SHIELD

1

RXFE Top Shield RXFE Bottom Shield Mixer Shield

RX Mixer Diode Shield

.01uFC380

100KR342

R5

DACRx

R336

C333R5

NU

NU

33KR327

R31691K

Q315

13

218KR318

R319150

C396NU

R3002.2K

0.47pFC397

1

33.0KRT300

2

R334

Q316

13

2VR300

R326

NU

NU

NU

NU

R3256.8K

[email protected]@526.925MHz

[email protected]@5

1.850V@

0.508V

4.398V

[email protected]@526.925MHz

Rx1 = [email protected] rf signalRx2 = [email protected] rf signalprobed using high impedence probe

and 2 Receiver Front End Schematic Diagram

Page 181: Motorola Gp328 338 Service Manual

Circu 6C-29

DB

C383100pF

Hz

Vdd_FILTERED

C350330pF

C349.022uF

2KR324

C35120pF

BFQ67WQ320

1

3

212pFC352

0R355

43pFC353

C362.022uF

56pF 100nHL332C385

.01uFC364

CR310R3201K

R3212.4K

C3632.2uF

2.20uHL325

R34656K

200KR322

C35447pF

100pFC390

100KR350

uF45

DEMOD

SH322SHIELD

1

SH321SHIELD

1

LVZIF TOP SHIELD LVZIF BTM SHIELD

C38456pF

10KR345

3.185V 2.628V

2.095V

UHF Band 2 Receiver Back End Schematic Diagram

http

://w

ww.m

yrad

io16

8.na

me

it Board/Schematic Diagrams and Parts List

TE

ST

D

VA

G

VA

G_R

EF

VP

P

RE

D_V

CC

RE

D_V

SS

RO

SE

_VC

CR

OS

E_V

SS

RS

SI_

FLT

RS

SI_

OU

T

TESTAIOUT

LIM

MIX_BYP

MIX_IN

MLPD_CR

PH

AS

E_L

OC

K

PREAMP_OUTPRE_AGC

PR

E_I

N

EM

IT

EX

TB

S

FREFGND

GO

LD_V

CC GOLD_VSS

GREEN_VCC

GREEN_VSS

C4M

C4P

CEXCLK

COL

DATA

DE

MO

D_H

FD

EM

OD

_OU

T

BROWN_VCCBRP_OFF

C1M

C1P

C2M

C2P

C3M

C3P

AF

C

BA

SE

BLUE_VCCBLUE_VSS

U30132D83

1615

24

2120

14

1918

13

17

2223

32 2530 2931 2636 28 27333435

42

464748

41

43

37

403938

4544

8 931 2 54 116 107 12

0.1uFC336

C356.022uF

L3142.2uH

C3411uF

C3391uF

C337100pF

C3401uF

1uFC342

Vdd_FILTERED

R5C3550.33uF

100pFC327

C3280.1uF

2.4KR312

C338

C330

15pF

10pF

R314

330

3K

R313

30KR311

C326.01uF

Q302R351

0

3.3KR352

12KR315

680nHL330

.01uFC325C323

150pF

20pFC324

750nHL311

GN

D2

4

GN

D3

5

OUT3

IN6

TBDXTALFL301

GN

D1

GN

D1

2

IF

10uFC382

C3480.1uF

0.1uFC329

2.20uHL331 R343

10

0.1uFC344

Vdd_FILTERED

(SOURCE)

C3430.22uF

0.1uFC347

0.1uFC346

Vdda

.022uFC334

0.1uFC359

1200pFC358

R34412K

0.22uFC357

16.8M

CLKDATA

LVZIF_SEL

0.1C3

DA

C36110nF

C360.022uF

RSSI

SH323SHIELD

1

CRYSTAL FILTER SHIELD

[email protected]

[email protected]

0.706V

2.683V

Page 182: Motorola Gp328 338 Service Manual

6C-30 Circuit Board/Schematic Diagrams and Parts List

VIN

1

VO

UT

5

0

D

NC

4

3

ON

_OF

F*

B+

2.2uFC279

100pFC277 C278

10uF

MODOUT

4V_3.3V

TP202

1

0.47uFC2346 C232

.047uF120R231

0.1uFC233

L23212uH

0.1uFC231 R232

620

560R233

VCTRL

C238470pF

if

SHIELDSH202

1

C208

HIELDH201

1

203

ER TOP SHIELD

SYNTHESIZER BOTTOM SHIELD

NU

ZMY0130186-C

UHF B

http

://w

ww.m

yrad

io16

8.na

me

C259.01uF

C258.01uF

TC7ST04FUU210

3GND

2

1NC

4

5VCC

TC7ST04FUU211

3GND

2

1NC

4

5VCC

0.1uFC296 C265 C257

100pFNU

NU NUC283 C282

C2980.1uF

4.7uFC228C229

1000pFC230100pF

A25

A34

K112 K2

3K3

CR201

A16

0.1uFC292

C2230.1uF

L2022.2uH

0.22uFC219

C2910.47uF

5V(SOURCE)

100pFC220

0.1uF2.2uFC218C217

0.1uFC224

L2012.2uH

2.2uHL203

C2352.2uF

IN

2NR

4OUT 3SD

ADP3300U247

6ERR

1G

ND

5

0.47uFC293

U248LP298

GN2

100pFC294

Vdda

SW

R255

30R25

4.3K

2

4

1

3

Q210

100pFC260

5V

R510K

47K

47K

4.7K

47KR204

C213100pF

LOCK

TP2011

AUX4

AUX3

C206330pF

39pFC207

R205

C215

NU(100 ohm)

NU(0.01uF)

FADJ 2

GN

D4

OUT3

VD

D1

FL201

75Z04

1GND GND1

4

OUT 3IN6

SS

CR

R206NU

SYNTHESIZ

C216

OSC_16.8MHZY201

NU(0.1uF)

(NU)

100pF 100pFC214

100pFC212C210

MODIN

CLK

DATA

CSX

100pFC211

R202100K

82KR201

39nHL261

0.75pFC263

C264100pF

PRESC

2.2uFC204

VMULT411

VR

O13

25WARP

XTAL123

XTAL224

SFOUT28

TEST137

TEST238

VBPASS21

VC

P47

VMULT115

VMULT21412

VMULT3

PREIN32

PR

E_G

ND

33

PR

E_V

DD

34

PVREF35

REFSEL18

SFBASE27

SFCAP26

SFIN30

LOCK4

MODIN10

MODOUT41

NC117

NC229

NC331

PD

_GN

D44

PD

_VD

D5

CLK8

DATA7

DG

ND

6

DV

DD

36

FREFOUT19

IADAPT45

INDMULT16

IOUT43

AUX21

AUX32

AUX43

AV

DD

20

BIAS140

BIAS239

42CCOMP

CEX9

ADAPTSW46

AG

ND

22

AUX148

LVFractN ICU201

C2034.7uF

C2021000pF100pF

C201

VSF

R281NU

16.8MHz

5V

and 2 Synthesizer Schematic Diagram

Page 183: Motorola Gp328 338 Service Manual

Circu 6C-31

.7pF45

L243

RESONATOR

1

2

3

4.3pFC250

4.3pFC242

4.3pFC243

1 2

CR243

A1 A2

CR241

C241100pF

22nHL242

390nHL241

CR242

24310K

C2443.6pF

Rx_sw

C2470.1uFC248

100pF

C2531.5pF

100pFC251CR251

20pFC252

390nHL251

VSF

VCTRL

RX_I

TX_I

[email protected]@527MHz

UHF Band 2 Voltage Controlled Oscillator Schematic Diagram

http

://w

ww.m

yrad

io16

8.na

me

it Board/Schematic Diagrams and Parts List

TX_IADJ1

TX_OUT10

TX_SWITCH13

VC

C_B

UF

FE

RS

14

VC

C_L

OG

IC

18

RX_EMITTER6

RX_IADJ2

RX_OUT8

RX_SWITCH7

SUPER_FLTR3

TRB_IN19

TX_BASE16

TX_EMITTER15

COLL_RFIN4

FLIP_IN20

GN

D_B

UF

FE

RS

11G

ND

_FLA

G917

GN

D_L

OG

IC

PRESC_OUT12

RX_BASE5

50U54

U241

Rx_sw

Tx_sw

C2730.1uF1.1pF

C272

L27318nH

27nH

1pF

L271

C271

R245240

C2762.2uF

100pFC281

390nHL281

0.1uFC286

100pFC246

2C2

120R242

100pFC285

R24118

15KR244

R

1

3

2 Q241BFQ67W

30R248

L282390nH

R2537.5K

Tx_sw

C2543.3pF

R25133

L253

RESONATOR

1

2

3

100pFC289

100pFC255

R252270

R2548.2K

1KR260

4

1

3

Q261

2

10K

47K

47K

4.7K

2

4

1

3

Q260

C297.01uF

10K

4.7K

47K

47K

1

SHIELDSH242

1

SHIELDSH241

VCO TOP SHIELD VCO BOTTOM SHIELD

AUX 4

AUX 3

5V

VSF

PRESC

NJ

NJ

4.6V

2V

4.6V

Page 184: Motorola Gp328 338 Service Manual

6C-32 Circuit Board/Schematic Diagrams and Parts List

TX

UNSWB+

CR103

2

31

Q111

47K

47K4.7K

10K

1

3

100pFC132

2

TX_BIAS

C110100pF

00pF170

RESET

5V

.022uFC173LM50

R105

2

18KR131

10KR130

HF SHIELD

SH100SHIELD

1

RF_JACK

C1073.3pF

L10412.39nH

L10212.39nH12.39nH

L101

C1064.7pF

C1046.2pF

C10313pF6.2pF

C102C101100pF

C108100pF

L105390nH

TX_OUT

CR101

36pFC188

R101240

R170240

2

3

1CR102

RX_IN

ANT_BIAS

UHF B

http

://w

ww.m

yrad

io16

8.na

me

_OUTMicrostrio

NU

Microstrio

Q1101

3C11315pF

BEAD

C11113.0pF

7.66nHL106

C11236pF

100pFC109

C181

C12310uF

L10733.47nH

0.1UNSWB+

2

1HEATSINKH101

POS

3.0

R1753.0

R176

0.1uFC172

Microstrio

NU

R172200

11pFC116

27pFC115C180L117

22.0nH

C114100pF

E101 R102

10pFC117

4.22nHL108

10R106

C118100pF

C121100pF

R1910

16pFC120

47KR104

R11120

TX_INJ_1

100pFC295

R112300 100pF

C125300R110

TX_INJ

NU

56pFC160

L160

390nHL112

UNSWB+

.022uFC128

100pFC130

.022uFC152

R1085.6K

NUR107

.022uF100pFC150C151

200R161

C1610.1uF

15N

C4

16R

FIN

6R

FO

UT

17

RF

OU

T2

1V

CN

TR

L14

VD

12

VG

13

VG

211

G2 4

GND1 5GND2 12GND3 13GND4

8N

C1

9N

C2

10N

C3

U10130C65

17EP

C1296.8pF

100pFC165

5.6nHL113

2pFC169C127

1000pF390nHL114

C166100pF

.022uFC131 R132

100K

UNSWB+100pFC174

CSX

NU

C122100pF

R133

C105100pF

UNSWB+

DATA

CLK

4

6

NU

(Use 82K with new PA)

PA SHIELD

43KR120

SHIELDSH101

1

R174

R173 R171

C119100pF

100pFC171

180K 43K

1000pFC133

390nHL115

C1343300pF1MEG

R136

C135.022uF

200KR109

VG

15

VL6 VLIM 19

T12 TE

MP

30

V10

14

V45

16

17V5EXT

20VAR1

18VAR2

24VAR3

INT422NA

Q11

QX

10

1 RFIN

RS 21

31R

SE

T

RX 23

CL7

CLK

26

CQ

12C

QX

13D

AT

A28

F16

89

GND18

GN

D2

25

U102H99S-4

AN

O32

BP

OS

27

CE

X29

CI3

CJ5

1C

0.1uFC126C138

100pFC

GND3

1P

OS

VOUT

ZMY0130225-A

and 2 Transmitter Schematic Diagram

Page 185: Motorola Gp328 338 Service Manual

Circu 6C-33

UHF

CircR

B501B503

B504

C101C102C103C104C105C106C107C108C109C110C111C112C113C114C115C116C117C118C119C120C121C122C123C125C126C127C128C129C130C131C132C133C134C135C138C140C141C150C151C152C160C161C165C166

pF, 10%pF, 10%

F, 0.25

0.250.250pF, +80%/-20%

10%, 20V

0pF, +80%/-20%

20%, 6.3V0pF, +80%/-20%

uF, 10%

0pF, +80%/-20%pF, 10%0pF, +80%/-20%0.5

0.1

0.5

0pF, +80%/-20%

0pF, +80%/-20%

0.5

0pF, +80%/-20%

0.1

0.50.250.5

Description

C323 2113743N54 150pFC324 2113743N33 20pFC325 2113743L41 10000pF, 10%C326 2113743L41 10000pF, 10%C327 2113743N50 100pFC328 2113743M24 100000pF, +80%/-20%C329 2113743M24 100000pF, +80%/-20%C330 2113743N26 10pFC331 2113743N50 100pFC333 NOT PLACEDC334 2113743M08 22000pF, +80%/-20%C336 2113743M24 100000pF, +80%/-20%C337 2113743N50 100pFC338 2113743N30 15pFC339 2180478Z20 1uFC340 2180478Z20 1uFC341 2180478Z20 1uFC342 2180478Z20 1uFC343 2113743A23 0.220uF, 10%C344 2113743M24 100000pF, +80%/-20%C345 2113743M24 100000pF, +80%/-20%C346 2113743M24 100000pF, +80%/-20%C347 2113743M24 100000pF, +80%/-20%C348 2113743M24 100000pF, +80%/-20%C349 2113743E07 0.022uFC350 2113743L05 330pF, 10%C351 2113743N33 20pFC352 2113743N28 12pFC353 2113743N41 43pFC354 2113743N42 47pFC355 2113743A24 0.330uF, 10%C356 2113743M08 22000pF, +80%/-20%C357 2113743A23 0.220uF, 10%C358 2113741A23 1200pFC359 2109720D14 0.1uF, low distortionC360 2113743E07 0.022uFC361 2113741F49 10nFC362 2113743M08 22000pF, +80%/-20%C363 2311049A40 2.2uF, 10%, 10VC364 2113743L41 10000pF, 10%C370 2113743N50 100pFC371 NOT PLACEDC372 NOT PLACEDC373 NOT PLACEDC374 2113743N50 100pFC375 2113743N50 100pFC378 NOT PLACEDC380 2113743L41 10000pF, 10%C381 2113743N18 4.7pF, 0.25C382 2311049A59 10uF, 10%, 6VC383 2113743N50 100pF

CircuitRef

MotorolaPart No. Description

http

://w

ww.m

yrad

io16

8.na

me

it Board/Schematic Diagrams and Parts List

Band 2 Radio Parts List

uitef

MotorolaPart No. Description

0986237A02 Battery Contact Module3980502Z01 Backup battery B+

(not used in GP328)3980501Z01 Backup battery B-

(not used in GP328)2113740F51 100pF2113740F22 6.2pF2113740F28 11pF2113740F22 6.2pF2113743N50 100pF2113740F19 4.7pF2113740F15 3.3pF2113743N50 100pF2113740F51 100pF2113743N50 100pF2103689A22 11pF2180605Z28 33pF2180605Z22 18pF2113743N50 100pF2113743N36 27pF2113743N27 11pFNOT PLACED2113743N50 100pF2113743N50 100pF2113743N23 7.5pF, 0.52113743N50 100pF2113743N50 100pF2311049A18 10uF, 10%, 16V2113743N50 100pF2113743M24 100000pF, +80%/-20%2113743L17 1000pF, 10%2113743M08 22000pF, +80%/-20%2113743N22 6.8pF, 0.52113743N50 100pF2113743M08 22000pF, +80%/-20%2113743N50 100pF2113743L17 1000pF, 10%2113743L29 3300pF, 10%2113743M08 22000pF, +80%/-20%2113743N50 100pFNOT PLACED2113740F25 8.2pF2113743M08 22000pF, +80%/-20%2113743N50 100pF2113743M08 22000pF, +80%/-20%2113743N44 56pF2113743M24 100000pF, +80%/-20%2113743N50 100pF2113743N50 100pF

C169 2113743N09 2.0pF, 0.25C170 2113743N50 100pFC171 2113743N50 100pFC172 2113743E20 0.10uF, 10%C173 2113743M08 22000pF, +80%/-20%C174 2113743N50 100pFC180 NOT PLACEDC181 NOT PLACEDC188 2113743N39 36pFC201 2113743N50 100pFC202 2113743L17 1000pF, 10%C203 2311049A56 4.7uF, 20%, 10VC204 2104993J02 2.2uFC206 2113740F63 330pFC207 2113743N40 39pFC208 NOT PLACEDC210 2113743N50 100pFC211 2113743N50 100pFC212 2113743N50 100pFC213 2113743N50 100pFC214 2113743N50 100pFC215 NOT PLACEDC216 NOT PLACEDC217 2104993J02 2.2uFC218 2113743M24 100000pF, +80%/-20%C219 2113743K16 0.220uF, +80%/-20%C220 2113743N50 100pFC223 2113743M24 100000pF, +80%/-20%C224 2113743M24 100000pF, +80%/-20%C228 2311049J11 4.7uF, 10%, 16VC229 2113743L17 1000pF, 10%C230 2113743N50 100pFC231 2113743M24 100000pF, +80%/-20%C232 2113743E12 0.047uF, 10%C233 2311049A01 0.1uF, 10%, 35VC234 2311049A05 0.47uF, 10%, 25VC235 2104993J02 2.2uFC238 2113741F17 470pFC241 2113743N50 100pFC242 2113743N17 4.3pF, 0.25C243 2113743N17 4.3pF, 0.25C244 2113740F14 3.0pFC245 2113743N12 2.7pF, 0.25C246 2113743N50 100pFC247 2113743N50 100pFC248 2113743M24 100000pF, +80%/-20%C250 2113743N17 4.3pF, 0.25C251 2113743N50 100pFC252 2113743N33 20pFC253 2113740F07 1.5pFC254 2113743N14 3.3pF, 0.25

CircuitRef

MotorolaPart No. Description

C255 2113743N50 100pFC257 2113743N50 100pFC258 2113743L41 10000C259 2113743L41 10000C260 2113743N50 100pFC263 2113743N02 0.75pC264 2113743N50 100pFC265 NOT PLACEDC271 2113743N03 1.0pF,C272 2113743N04 1.1pF,C273 2113743M24 10000C276 2104993J02 2.2uFC277 2113743N50 100pFC278 2311049A57 10uF,C279 2104993J02 2.2uFC281 2113743N50 100pFC282 NOT PLACEDC283 NOT PLACEDC285 2113743N50 100pFC286 2113743M24 10000C289 2113743N50 100pFC291 2311049A69 10uF,C292 2113743M24 10000C293 2113743A27 0.470C294 2113743N50 100pFC295 2113743N50 100pFC296 2113743M24 10000C297 2113743L41 10000C298 2113743M24 10000C301 2113743N24 8.2pF,C302 2113743N28 12pFC303 2113740L09 4.3pF,C304 2113743N27 11pFC305 2113743N24 8.2pF,C306 NOT PLACEDC307 2113743M24 10000C308 2113743N50 100pFC309 2113743N50 100pFC310 2113743M24 10000C311 NOT PLACEDC312 2113743N23 7.5pF,C313 2113743N27 11pFC314 2113743M24 10000C315 2113743N50 100pFC316 2113740L09 4.3pF,C317 2113743N27 11pFC318 2113743N23 7.5pF,C319 2113743N15 3.6pF,C320 2113743N23 7.5pF,C321 2113743N50 100pFC322 2113743N48 82pF

CircuitRef

MotorolaPart No.

Page 186: Motorola Gp328 338 Service Manual

6C-34 Circuit Board/Schematic Diagrams and Parts List

C384C385C386C390C391C395C396C397C400C401C402C403C404

C405C406C407C408C409C410C411C414C415C416C419C420C421C422C423C424C425C426C427C428C429C430C431C432C433C434

C435C436C437C440C441C442C443C444C445C447

CircuiRef

de (SOT 25)

mon anode-cathode

ad diode (SOT-143)

hottkyhottkyhottkymon cathode diode

/Yelloweadeadeadeadeadeadeadeadeadeadead

Xtal oscillator (noticeable)r 45.1MHzillator 38.4kHz (not

P328)eader

nutnnector

.3

escription

L114 2462587N42 12nH, 5%L115 2462587N22 390nHL116 2479990C02 16.28nHL117 2409154M17 22nHL160 2413926H14 15nH, 5%L201 2462587Q20 2200nH, 20%L202 2462587Q20 2200nH, 20%L203 2462587Q20 2200nH, 20%L232 2462587P25 12000nH, 5%L241 2462587V41 390nHL242 2462587V26 22nH, 5%L243 2460593C03 Multi-layered Teflon resona-

tor, RxL251 2462587V41 390nHL253 2460593C03 Multi-layered Teflon resona-

tor, TxL261 2462587V29 39nH, 5%L271 2462587V27 27nH, 5%L273 2462587V25 18nH, 5%L281 2462587V41 390nHL282 2462587V41 390nHL301 2479990B01 11.03nHL302 2479990B01 11.03nHL303 2462587V26 22nH, 5%L304 2462587V37 180nH, 5%L305 2462587V23 12nH, 5%L306 2479990B01 11.03nHL307 2479990B01 11.03nHL309 2479990C02 16.28nHL310 2462587V36 150nH, 5%L311 2462587N65 750nH, 5%L314 2462587N72 2200nH, 5%L321 NOT PLACEDL325 2480646Z20 2.2uHL330 2462587N64 680nH, 5%L331 2480646Z20 2.2uHL332 2462587N53 100nH, 5%L340 2462587V41 390nHL400 2462587Q42 390nHL401 2462587Q42 390nHL410 2462587Q42 390nHL411 2462587Q42 390nHL505 2462587Q42 390nHP100 3905643V01 Ground contact fingerPB501 4080523Z01 Tactile switch, pushbuttonPB502 4080523Z01 Tactile switch, pushbuttonPB503 4080523Z01 Tactile switch, pushbuttonPB504 4080523Z01 Tactile switch, pushbuttonPB505 4080523Z01 Tactile switch, pushbuttonQ110 4813828A09 RF Power AmplifierQ111 4802245J50 Dual NPN/PNP transistor

CircuitRef

MotorolaPart No. Description

http

://w

ww.m

yrad

io16

8.na

me

2113743N44 56pF2113743N44 56pF2113743N50 100pF2113743N50 100pFNOT PLACED2113743N50 100pFNOT PLACED2311049A07 1uF, 10%, 16V2113743L41 10000pF, 10%2113743M24 100000pF, +80%/-20%2113743M24 100000pF, +80%/-20%2113743G24 2.2uF, +/-80%/-20%NOT PLACED GCAM DUMMY PART NUM-

BERNOT PLACEDNOT PLACED2113928N01 0.1uF , 10%2113743N50 100pF2113743M24 100000pF, +80%/-20%2113928N01 0.1uF , 10%2113743M24 100000pF, +80%/-20%2113743M24 100000pF, +80%/-20%2185895Z01 0.01uF, low distortion2113928N01 0.1uF , 10%NOT PLACED2113743L41 10000pF, 10%2113928N01 0.1uF , 10%2113743M24 100000pF, +80%/-20%2113743N50 100pF2311049A59 10uF, 10%, 6V2113743M24 100000pF, +80%/-20%2113743N50 100pF2113743N50 100pF2113743M24 100000pF, +80%/-20%2113743M24 100000pF, +80%/-20%2113928N01 0.1uF , 10%2113743N50 100pFNOT PLACED2113743L41 10000pF, 10%2113928N01 0.1uF, 10%(not used in

GP328)2113743M24 100000pF, +80%/-20%2113743N34 22pF (not used in GP328)2113743N34 22pF (not used in GP328)2113743G26 4.7uF, +80%/-20%2113743N50 100pF2113743E20 0.10uF, 10%2113928N01 0.1uF , 10%2113743N50 100pF2113743N50 100pF2113743M08 22000pF, +80%/-20%

t MotorolaPart No. Description

C448 2113928N01 0.1uF , 10%C449 2113743N50 100pFC450 NOT PLACEDC451 2113743M08 22000pF, +80%/-20%C452 2113743B29 1uF, 10%C453 2113743N50 100pFC456 2113743N50 100pFC458 2113743N50 100pFC459 2113743N50 100pFC463 2113743N50 100pFC466 2113743N50 100pFC467 2113928N01 0.1uF , 10%C471 2113743N50 100pFC472 2113743L09 470pF, 10%C473 2113743L09 470pF, 10%C475 2113743H14 10uF, +80%/-20%C476 2113928D08 10uF, +/-80%/-20%C479 2113928N01 0.1uF , 10%C480 2113928D08 10uF, +/-80%/-20%C481 2113928N01 0.1uF , 10%C482 2113928N01 0.1uF , 10%C490 2113743N50 100pFC491 2113743N50 100pFC492 2113743N50 100pFC493 2113743N50 100pFC494 2113743N50 100pFC495 2113743N50 100pFC496 2113743N50 100pFC497 2113743N50 100pFC502 2311049A05 0.47uF, 10%, 25VC503 2113743N50 100pFC505 2113743N50 100pFC511 2113743N50 100pFC512 2113743N50 100pFC513 2113743N50 100pFC514 2113743N50 100pFC520 2113743L41 10000pF, 10%C521 2113743L41 10000pF, 10%C522 2113743L41 10000pF, 10%C523 2113743L41 10000pF, 10%C524 2113743N50 100pFC525 2113743N50 100pFC526 2113743N50 100pFC527 2113743N50 100pFC528 2113743N50 100pFC529 NOT PLACEDCR101 4880973Z02 Pin diodeCR102 4802245J41 Pin diodeCR103 4802245J41 Pin diodeCR105 5185963A15 Temperature sensorCR160 NOT PLACED

CircuitRef

MotorolaPart No. Description

CR201 4802233J09 Triple dioCR203 4862824C03 VaractorCR241 4805649Q13 VaractorCR242 4862824C01 VaractorCR243 4862824C01 VaractorCR251 4862824C01 VaractorCR301 4862824C01 VaractorCR302 4862824C01 VaractorCR303 4880154K03 Dual com

diodeCR304 4862824C01 VaractorCR305 4862824C01 VaractorCR306 4802245J42 Ring QuCR308 4802245J41 Pin diodeCR310 4862824C01 VaractorCR411 4802245J62 Diode ScCR412 4802245J62 Diode ScCR413 4802245J62 Diode ScCR440 4813833C02 Dual comCR501 4880107R01 RectifierCR503 4805729G49 LED RedE101 2484657R01 Ferrite bE400 2480640Z01 Ferrite bE401 2480640Z01 Ferrite bE402 2480640Z01 Ferrite bE403 2480640Z01 Ferrite bE404 2480640Z01 Ferrite bE405 2480640Z01 Ferrite bE406 2480640Z01 Ferrite bE407 2480640Z01 Ferrite bE408 2480640Z01 Ferrite bE409 2480640Z01 Ferrite bF501 6580542Z01 3A fuseFL201 4805875Z04 16.8MHz

field servFL301 4802245J43 Xtal FilteFL401 4870368G02 Xtal Osc

used in GH101 2680499Z01 Heat sprJ101 0985613Z01 RF JackJ102 0280519Z02 AntennaJ403 0905505Y02 20-pin coL101 2460591B28 13.37nHL102 2460591B28 13.37nHL104 2460591B48 15.22nHL105 2462587N22 390nHL106 2460591A19 8.71nHL107 2479990G01 33.47nHL108 2479990A01 4.22nHL112 2462587N42 12nH, 5%L113 2413926H09 5.6nH, 0

CircuitRef

MotorolaPart No. D

Page 187: Motorola Gp328 338 Service Manual

Circu 6C-35

Q21Q24Q26Q26Q30Q30Q31Q31Q31Q32Q40Q40Q40Q41Q41

Q41Q50Q50R101R102R104R106R107R108R109R110R111R112R120R130R131R132R133R136R161R170R171R172R173R174R175R176R191R201R202R204R205R206R231R232

CircR

1%%

not used in GP328)

(not used in GP328)

Description

R450 0683962T45 68 ohms, 1WR451 0662057N03 15KR452 0662057N23 100KR453 NOT PLACEDR454 NOT PLACEDR455 NOT PLACEDR456 0662057M01 0R457 0662057M98 10KR460 0662057M90 4700R461 0662057M56 180 (not used in GP328)R462 0662057M98 10K (not used in GP328)R463 0662057M61 300R471 0662057N06 20KR472 0662057N12 36KR473 0662057M26 10R475 0662057M01 0R476 0662057N35 330KR477 0662057M74 1000R478 0662057M98 10KR481 0662057N08 24KR492 0662057M01 0R501 0662057M70 680R502 0662057M56 180R505 0662057M98 10KR506 0662057N15 47KR507 0662057M01 0RT300 0680590Z01 THERMISTOR_33KRT301 NOT PLACEDRT400 0680590Z01 THERMISTOR_33KS501 4080710Z01 Frequency switchS502 1880619Z02 Volume/on-off switchSH100 2680507Z01 Harmonic Filter shieldSH101 2680510Z01 RF PA shieldSH201 2680511Z01 Synthesizer top shieldSH202 2680511Z01 Synthesizer bottom shieldSH241 2680513Z01 Resonators shieldSH242 2680514Z01 VCO Buffer IC shieldSH301 2680554Z01 Receiver front end shieldSH302 2680555Z01 Receiver front end bottom

shieldSH303 2680509Z01 Mixer shieldSH304 2680624Z01 Mixer diode shieldSH321 2680508Z01 LVZIF 2nd LO shieldSH322 2680514Z01 LVZIF shieldSH323 2680553Z01 Crystal Filter shieldSH400 2680505Z01 Controller Memory ShieldSH401 2680506Z01 Controller on-off shieldSH402 2680515Z01 Microprocessor shieldSH403 2680516Z01 Asfic_Cmp/Audio PA shieldT301 2580541Z02 Balun transformerT302 2580541Z02 Balun transformer

CircuitRef

MotorolaPart No. Description

http

://w

ww.m

yrad

io16

8.na

me

it Board/Schematic Diagrams and Parts List

0 4802245J50 Dual NPN/PNP transistor1 4805218N63 RF NPN transistor0 4802245J50 Dual NPN/PNP transistor1 4802245J50 Dual NPN/PNP transistor1 4802245J44 NPN Transistor2 4802245J44 NPN Transistor0 NOT PLACED5 4880214G02 NPN Transistor6 NOT PLACED0 4805218N63 RF NPN transistor0 4809579E18 Mosfet P - channel3 4813824A17 Bipolar Transistor, PNP5 4802245J54 Dual NPN Transistor0 4802245J54 Dual NPN Transistor6 4809579E18 Mosfet P - channel (not used

in GP328)7 4802245J50 Dual NPN/PNP transistor2 5180159R01 Dual NPN Transistor5 4880214G02 NPN Transistor

0662057A34 2400680539Z01 0.10662057N15 47K0662057M26 10NOT PLACED0662057M92 56000662057N30 200K0662057M61 3000662057M33 200662057M61 3000662057N14 43K0662057M98 10K0662057N05 18K0662057N33 270KNOT PLACED0662057N47 1M0662057M57 2000662057A34 2400662057N14 43K0662057A32 2000662057N29 180K0662057N15 47K0662057B59 30662057B59 30662057C01 00662057N21 82K0662057N23 100K0662057N15 47KNOT PLACEDNOT PLACED0662057M52 1200662057M69 620

uitef

MotorolaPart No. Description

R233 0662057M68 560R241 0662057M32 18R242 0662057M52 120R243 0662057M98 10KR244 0662057N03 15KR245 0662057M59 240R248 0662057M37 30R251 0662057M38 33R252 0662057M60 270R253 0662057M95 7500R254 0662057M96 8200R255 0662057M89 4300R256 0662057M37 30R260 0662057M74 1000R281 NOT PLACEDR300 0662057M82 2200R301 0662057N23 100KR302 0662057N23 100KR303 0662057M78 1500R304 0662057N01 12KR305 0662057M66 470R306 0662057N23 100KR307 0662057N23 100KR308 0662057M60 270R309 0662057M32 18R310 0662057M60 270R311 0662057N10 30KR312 0662057M83 2400R313 0662057M62 330R314 0662057M85 3000R315 0662057N01 12KR316 0662057A96 91KR317 0662057M74 1000R318 0662057A79 18KR319 0662057A29 150R320 0662057M74 1000R321 0662057M83 2400R322 0662057N30 200KR324 0662057M81 2000R325 0662057M94 6800R326 NOT PLACEDR327 0662057N11 33KR328 0662057M12 2.7R329 0662057M01 0R330 NOT PLACEDR331 NOT PLACEDR332 NOT PLACEDR333 NOT PLACEDR334 NOT PLACEDR335 NOT PLACEDR336 NOT PLACED

CircuitRef

MotorolaPart No. Description

R338 NOT PLACEDR339 0662057M01 0R340 0662057M96 8200R342 0662057N23 100KR343 0662057M26 10R344 0662057N01 12KR345 0662057M98 10KR346 0662057N17 56KR347 0662057M74 1000R348 0662057M87 3600R349 0662057C01 0R350 0662057N23 100KR351 0662057C01 0R352 0662057M86 3300R355 0662057M01 0R400 0662057N15 47KR401 0662057M01 0R402 NOT PLACEDR403 NOT PLACEDR405 0662057M01 0R406 0662057N20 75KR407 0662057N19 68KR408 NOT PLACEDR409 0662057M98 10KR410 0662057N23 100KR411 0662057M98 10KR413 0662057M01 0R414 0662057V34 180K,R415 0662057V26 91K, 1R416 0662057M98 10KR418 0662057M01 0R419 0662057M67 510R420 0662057B46 10M (R421 0662057M81 2000R423 0662057N39 470KR424 0662057N12 36KR425 0662057N10 30KR426 0662057N35 330KR427 0662057M84 2700R428 0662057M10 2.2R429 0662057M98 10KR431 0662057N39 470KR432 0662057N16 51KR434 0662057M62 330R435 0662057M81 2000R436 0662057M01 0R437 NOT PLACEDR445 0662057N08 24KR447 0662057N23 100KR448 0662057M98 10KR449 0662057N08 24K

CircuitRef

MotorolaPart No.

Page 188: Motorola Gp328 338 Service Manual

6C-36 Circuit Board/Schematic Diagrams and Parts List

U101

U102U201U210U211U241U247U248U301U400U404U405U406U407U409U410

U420VR300VR432VR433VR434VR439VR440VR441VR442VR443VR444VR445VR446VR447VR448VR449VR450VR460VR501VR506Y201

CircuiRef

http

://w

ww.m

yrad

io16

8.na

me

* Motorola Depot Servicing only

Note: ToleranceCapacitor - 5% unless specified otherwiseInductor - 10% unless specified otherwiseResistor - 5% unless specified otherwise

5185130C65 IC VHF/UHF/800 MHZLDMOS DRIVER

5185765B28 PCIC5185963A27 LVFRACN Synthesizer IC5102463J61 Inverter5102463J61 Inverter5105750U54 VCO BUFFER IC5105739X05 SOT 5V Regulator5102463J58 3.3V Regulator5109632D83 LVZIF IC5102463J40 3.3V Regulator5185963A53 ASFIC_CMP ICNOT PLACED*5102463J59 128K x 8 Flash Memory*5102463J64 16K x 8 EEPROM5102226J56 Microprocessor5102463J57 3.3V Regulator (not used in

GP328)5102463J44 Audio PANOT PLACED4805656W08 5.6V Zener4805656W08 5.6V Zener4802245J73 ZENER DIODE-6.8V4880140L17 Zener diode-12V4802245J73 ZENER DIODE-6.8V4802245J73 ZENER DIODE-6.8V4802245J73 ZENER DIODE-6.8V4802245J73 ZENER DIODE-6.8V4802245J73 ZENER DIODE-6.8V4802245J53 ZENER DIODE-10V4802245J74 ZENER DIODE-10V4802245J74 ZENER DIODE-10V4802245J74 ZENER DIODE-10V4802245J74 ZENER DIODE-10V4802245J75 ZENER DIODE-12V4802245J73 ZENER DIODE-6.8V4813830A18 6.8V Zener4802245J73 ZENER DIODE-6.8VNOT PLACED8485641Z06 UHF B2 main PC board

t MotorolaPart No. Description

Page 189: Motorola Gp328 338 Service Manual

Troubleshooting charts 6C-37

9.0 Troubleshooting charts

MCU Check

Power UpAlert Tone

OK?

SpeakerOK?

U409 EXTAL=7.3728 MHz?

U201 Pin 1916.8 MHz

5V at U247?3.3V at U248?

U409 Reset Pin94 High?

MCU is OK

Not able to pro-gram RF Board

ICs

Before replacingMCU, check SPIclock, SPI data,

and RF IC select

ReplaceSpeaker

Read RadioOK?

CheckSetup

Reprogram thecorrect data.

See FGUTroubleshooting

7.5V atPin 3/5 U247?4/3.3V at Pin 1

U248

CheckQ400

ReplaceU247/U248

Check any shortto SWB+,

Vdda or Vddd

Press PTT. RedLED does not

light up

PTT U409Pin 53low?

Press PTTQ502-2High?

CheckPB504

CheckQ502-2voltage

LEDQ502,R501

OK?

ReplaceFaulty

Component

CheckAccessories

J403OPT_SEL_1 &OPT_SEL_2

Pin 8 & 9low?

Radio couldnot PTT

externally

U409Pin 52, 6

low?

See FGUTroubleshoot-

ing chart

LED shouldlight up

CheckMCU

PTT

NO

YES

YES

No

No

NO

YES YES

NO

YES

YES

NO

NO

YES

YES

NO

NO

YES

NO

YES

NO

YES

YES

NO

NO

YES

EXTSPKR

EXTPTT

INTAUDIO

J403 Pin 9 low?Pin 8 high?

ASFIC U404Pin 14 & 15

high?

CheckAccessories

CheckU404

CheckU420 Audio PA

NO

NO

YES

YES

J403 Audioat Pin 2 &

Pin 3

Check Spk.Flex Connec-

Audio atAudioPA(U420)input

Audio from Pin 41ASFIC, U404?

CheckASFIC U404

CheckAudio PA(U420)

CheckU301LV ZIF

Audio atPin 2

U404?

NO

NO

NO

YES

YES

NO

YES

Troubleshooting Flow Chart for Controller

Page 190: Motorola Gp328 338 Service Manual

6C-38 Troubleshooting charts

Bad SINADBad 20dB Quieting

No Recovered Audio

START

Audio at pin27 of U301? Check Controller

Yes

No

Spray of inject 1st IF intoXTAL Filter

IF Freq: 45.1MHz

Audio heard?BYes

No

Check 2nd LO ControlVoltage at C363

VCO locked?BYes

16.8 MHzcheck at pin

22 U301?

Activity onU301 sel pin?

Check FGU

No

No

A

A

Yes

Check Q320 biascircuitry for faults.

Rotate Freq. Knob

Check controller.

Before replacing U301, check 2ndVCO Q320. Check VCO O/P level,

C351, C352.

Yes

No

Troubleshooting Flow Chart for Receiver (Sheet 1 of 2)

Page 191: Motorola Gp328 338 Service Manual

Troubleshooting charts 6C-39

IF Signal atL311?

No

RF Signal atT301?

RF Signal atC310?

No

RF Signal atC307?

No

RF Signal atC301?

No or

Check harmonic filters L101 & L102 andant. switches CR101, CR102, L104

Check filter betweenC301 & C307; programfilter to schematic test

freq and check varactorvoltages.

Inject RF into J101

Are varactorvoltages OK?

No

Yes

Check RF amp (Q301)Stage.

Check filter betweenC310 & T301.

Yes

Check T301, T302,CR306, R308, R309,

R310Yes

1st LO O/POK?

Locked?

Yes

Check FGU

Yes

Trace IF signalfrom L311 to

Q302. Check forbad XTAL filter.

No

Yes Q302 collec-tor OK?IF signalpresent?

Before replacingU301, check

U301 voltages;trace IF signal

path.

Yes

Check for 2.6VDC

Is R5present?

Check Q210, U201(pin 48) voltages and

U247

No

No

No

Check U404 voltage.U404 can be selected by

MCU before replacingU404.

Check varactor filter.

No

Yes

Yes

Yes

A

A

B

weak RF

Troubleshooting Flow Chart for Receiver (Sheet 2 of 2)

Page 192: Motorola Gp328 338 Service Manual

6C-40 Troubleshooting charts

START

No Power

Is There B+Bias for Ant

switch

Check Q111

Is CurrentOK?

Is Control Volt-age High or Low

Check PCIC

1. Check Pin Diodes2. Check Harmonic Filter

Inspect/Repair Tx.Output Network

Is PowerOK?

Done

Check Drive toModule

Is DriveOK? Troubleshoot

VCO

Inspect PA Network/Check Power Out ofU101 at Cap C160

Is PowerOK?

Replace U101

Is PowerOK?

Replace Q101

Done

Done

No

Yes

Yes No

No

Yes

Low

High

No

Yes

Yes

No

Yes

No

Troubleshooting Flow Chart for Transmitter

Page 193: Motorola Gp328 338 Service Manual

Troubleshooting charts 6C-41

5Vat pin 6 ofCR201

Is informationfrom µP U409

correct?

Is U201 Pin 18AT 4.54 VDC?

Is U201 Pin 47AT = 13 VDC

Is U241 Pin 19<0.7 VDC in RX &>4.3 VDC in TX?

Start

Visualcheck of theBoard OK?

CorrectProblem

Check 5VRegulator

+5V at U201Pin’s

13 & 30?

Is 16.8MHzSignal at

U201 Pin 19?

Check FL201, C206,C207, C208, CR203 &

R204

Are signalsat Pin’s 14 &15 of U201?

CheckL202 Check Q260,

Q261 & R260

U201 pin 2 at>3V in Tx and<0.7V in Rx

Replace U201

RemoveShorts

Is there a shortbetween Pin 47 and

Pins 14 & 15 ofU201?

Replace orresolder

necessarycomponents

Is RF level atU201 Pin 32>-30 dBm?

Are R231,R232,R233,C231,C232,

& C233 OK?

Replace U201

If L261, C263 & C264are OK, then see VCOtroubleshooting chart

Are Waveformsat Pins 14 & 15

triangular?

Do Pins 7,8 & 9of U201 togglewhen channel is

changed?

Check programminglines between U409

and U201 Pins 7,8 & 9

Replace U201

Check uP U409Troubleshooting

Chart

NO

YES

NO

YES

NO

YES

NO

YES

NO

NO

NO

YES

YES

NO

YES

YES

NO

YES

YES

YES

NO

NO

NO

NO

YES

NO

YES

YES

Check CR201, U210,U211, C258, C259 &

C228

3.3V at U201pins 5, 20, 34 &

36

Check U248,L201 & L202

Is16.8MHzsignal atU201 pin

23?

ReplaceU201

YES

NO

NO

YES

NO

YES

Troubleshooting Flow Chart for Synthesizer

Page 194: Motorola Gp328 338 Service Manual

6C-42 Troubleshooting charts

START

No LO?

Tx Carrier?

VCO OK

CheckR260

TRB = 5V?Pin 10>1V?

L253 O/C?Change

L253

ChangeU241

AUX 3High?

Check U201Pin 2 for 3.2V

Pin 19=0V

AUX 4High?

ChangeQ261

V ctrl 0Vor 13V?

L243 OpenCircuit?

ChangeU241

ChangeL243

ChangeU201

Check for faulty parts or dryjoints of L271, L273, C370,

C386, R339 & L320

A

A

No

No

Yes

Yes

Yes

No

No

Yes

Yes

Yes

No

Yes

No

No

Yes

Yes

No

No

Check R245 for dryjoint or faulty

No

Troubleshooting Flow Chart for VCO

Page 195: Motorola Gp328 338 Service Manual

6D-1

Section 6D

MODEL CHART AND TEST SPECIFICATIONS (330-400MHZ)

1.0 Model Chart

GP Series, 330-400 MHzModel Description

AZH25PDC9AA3 GP328 330-400 MHz 4W 16 CH

AZH25PDH9AA6 GP338 330-400 MHz 4W 128 CH

Item Description

X PMUD1536 GP328 Super Tanapa 330-400 MHz 4W

X PMUD1537 GP338 Super Tanapa 330-400 MHz 4W

X PMUD1541 GP328 Tanapa 330-400 MHz 4W

X PMUD1542 GP338 Tanapa 330-400 MHz 4W

X PMLD4136 GP328 B/C Kit 330-400 MHz 4W

X PMLD4137 GP338 B/C Kit 330-400 MHz 4W

X PMLN4216 GP328 Front Housing Kit

X PMLN4199 GP338 Front Housing Kit

X X PMAD4009 VHF 9 cm antenna (336-368 MHz)

X X PMAD4020 VHF 9 cm antenna (370-400 MHz)

X 6804110J54 GP328 User Guide

X 6804110J55 GP338 User Guide

x = Indicates one of each is required.

Page 196: Motorola Gp328 338 Service Manual

6D-2 Specifications

2.0 SpecificationsGeneral

Transmitter

Receiver

All specifications are subject to change without notice.

330-400MHz

Frequency: 330-400 MHz

Channel Capacity: GP328 : 16 ChannelsGP338 : 128 Channels

Power Supply: 7.5 Volts ±20%

Dimensionswith Standard

High CapacityNiMH Battery:

with Ultra HighCapacity NiMH Bat-tery:

137mm x 57.5mm x37.5mm

137mm x 57.5mm x40mm

Weight:with Standard

High CapacityNiMH Battery:

with Ultra HighCapacity NiMH Bat-tery:

420 g

500 g

Average BatteryLife @ (5-5-90 DutyCycle)

Standard HighCapacity NiMH Bat-tery:

Ultra High Capac-ity NiMH Battery:

Low Pow-er

>11 hrs

>14 hrs

High Pow-er

>8 hrs

>11 hrs

Sealing: Passes rain testing perIP54

Shock: Meets MIL-STD-810-C,D & E and TIA/EIA 603

Vibration: Meets MIL-STD-810-C,D & E and TIA/EIA 603

Dust: Meets MIL-STD-810-C,D & E and IP54

Humidity: Meets MIL-STD-810-C,D & E and TIA/EIA 603

330-400MHz

RF OutputNiMH @ 7.5V:

Low1W

High4W

Frequency 330-400 MHz

Channel Spacing 12.5/20/25 kHz

Freq. Stability(-30°C to +60°C)

0.00025%

Spurs/Harmonics: -36 dBm < 1 GHz-30 dBm > 1 GHz

Audio Response:(from 6 dB/oct. Pre-Emphasis, 300 to3000Hz)

+1, -3 dB

Audio Distortion:@ 1000 Hz, 60%Rated Max. Dev.

<5%

FM Noise: -40 dB

12.5kHz 20/25kHz

Frequency: 330-400MHz

330-400MHz

Sensitivity12dB EIA SINAD:

0.35 µV 0.35 µV

Adjacent ChannelSelectivity ETS

-60 dB -70 dB

IntermodulationETS

-65 dB -65 dB

Freq. Stability(-30°C to +60°C):

0.00025% 0.00025%

Spur Rejection: -70 dB -70 dB

Image Rejection: -70 dB -70 dB

Audio Output@ <5% Distortion

500 mW 500 mW

Page 197: Motorola Gp328 338 Service Manual

Transmitter 6D-3

3.0 Transmitter

3.1 General(Refer to Figure 6-1)

The VHF transmitter contains five basic circuits:

1. power amplifier

2. antenna switch

3. harmonic filter

4. antenna matching network

5. power control integrated circuit (PCIC).

3.1.1 Power Amplifier

The power amplifier consists of two devices:

1. 9Z67 LDMOS driver IC (U101) and

2. PRF1507 LDMOS PA (Q110).

The 9Z67 LDMOS driver IC contains a 2 stage amplification with a supply voltage of 7.3V.

This RF power amplifier is capable of supplying an output power of 0.3W (pin 6 and 7) with an inputsignal of 2mW (3dBm) (pin16). The current drain would typically be 160mA while operating in thefrequency range of 330-400MHz.

The PRF1507 LDMOS PA is capable of supplying an output power of 7W with an input signal of0.3W. The current drain would typically be 1300mA while operating in the frequency range of 330-400MHz. The power output can be varied by changing the biasing voltage.

Figure 6-1: Transmitter Block Diagram

PCIC

Antenna

P ADriver

Vcontrol Vcontrol

From VCO

Jack

PA-FinalStage

Antenna Switch/Harmonic Filter/

Matching Network

Page 198: Motorola Gp328 338 Service Manual

6D-4 Transmitter

3.1.2 Antenna Switch

The antenna switch circuit consists of two PIN diodes (CR101 and CR102), a pi network (C107, L104and C106), and two current limiting resistors (R101, R170). In the transmit mode, B+ at PCIC (U102)pin 23 will go low and turn on Q111 where a B+ bias is applied to the antenna switch circuit to bias thediodes "on". The shunt diode (CR102) shorts out the receiver port, and the pi network, whichoperates as a quarter wave transmission line, transforms the low impedance of the shunt diode to ahigh impedance at the input of the harmonic filter. In the receive mode, the diodes are both off, andhence, there exists a low attenuation path between the antenna and receiver ports.

3.1.3 Harmonic Filter

The harmonic filter consists of C104, L102, C103, L101 and C102. The design of the harmonic filterfor VHF is that of a modified Zolotarev design. It has been optimized for efficiency of the powermodule. This type of filter has the advantage that it can give a greater attenuation in the stop-band fora given ripple level. The harmonic filter insertion loss is typically less than 1.2dB.

3.1.4 Antenna Matching Network

A matching network which is made up of L116 is used to match the antenna's impedance to theharmonic filter. This will optimize the performance of the transmitter and receiver into an antenna.

3.1.5 Power Control Integrated Circuit (PCIC)

The transmitter uses the Power Control IC (PCIC), U102 to regulate the power output of the radio.The current to the final stage of the power module is supplied through R101, which provides a voltageproportional to the current drain. This voltage is then fedback to the Automatic Level Control (ALC)within the PCIC to regulate the output power of the transmitter.

The PCIC has internal digital to analog converters (DACs) which provide the reference voltage of thecontrol loop. The reference voltage level is programmable through the SPI line of the PCIC.

There are resistors and integrators within the PCIC, and external capacitors (C133, C134 and C135)in controlling the transmitter rising and falling time. These are necessary in reducing the powersplatter into adjacent channels.

CR105 and its associated components are part of the temperature cut back circuitry. It senses theprinted circuit board temperature around the transmitter circuits and output a DC voltage to the PCIC.If the DC voltage produced exceeds the set threshold in the PCIC, the transmitter output power will bereduced so as to reduce the transmitter temperature.

Page 199: Motorola Gp328 338 Service Manual

Receiver 6D-5

4.0 Receiver

4.1 Receiver Front-End(Refer to 330-400MHz Receiver Front End Schematic Diagram on page 6D-16 and 330-400MHzTransmitter Schematic Diagram on page 6D-20)

The RF signal is received by the antenna and applied to a low-pass filter. For VHF, the filter consistsof L101, L102, C102, C103, C104. The filtered RF signal is passed through the antenna switch. Theantenna switch circuit consists of two PIN diodes(CR101 and CR102) and a pi network (C106, L104and C107).The signal is then applied to a varactor tuned bandpass filter. The VHF bandpass filtercomprises of L301, L302, C302, C303, C304, CR301 and CR302. The bandpass filter is tuned byapplying a control voltage to the varactor diodes(CR301 and CR302) in the filter.

The bandpass filter is electronically tuned by the DACRx from U404 which is controlled by themicroprocessor. Depending on the carrier frequency, the DACRx will supply the tuned voltage to thevaractor diodes in the filter. Wideband operation of the filter is achieved by shifting the bandpass filteracross the band.

The output of the bandpass filter is coupled to the RF amplifier transistor Q301 via C307. After beingamplified by the RF amplifier, the RF signal is further filtered by a second varactor tuned bandpassfilter, consisting of L306, L307, C313, C317, CR304 and CR305.

Both the pre and post-RF amplifier varactor tuned filters have similar responses. The 3 dB bandwidthof the filter is about 50 MHz. This enables the filters to be electronically controlled by using a singlecontrol voltage which is DACRx .

Figure 6-2: VHF Receiver Block Diagram

Demodulator

Synthesizer

CrystalFilter

MixerVaractorTuned FilterRF AmpVaractor

Tuned Filter

Pin DiodeAntennaSwitchRF Jack

Antenna

AGC

Control Voltagefrom ASFIC

First LOfrom FGU

Recovered AudioSquelch

RSSI

IF IC

SPI Bus

16.8 MHzReference Clock

SecondLO VCO

U301

IF Amp

Page 200: Motorola Gp328 338 Service Manual

6D-6 Receiver

The output of the post-RF amplifier filter which is connected to the passive double balanced mixerconsists of T301, T302 and CR306. Matching of the filter to the mixer is provided by C381. Aftermixing with the first LO signal from the voltage controlled oscillator (VCO) using low side injection, theRF signal is down-converted to the 45.1 MHz IF signal.

The IF signal coming out of the mixer is transfered to the crystal filter (FL301) through a resistor padand a diplexer (C322 and L310). Matching to the input of the crystal filter is provided by C324 andL311. The crystal filter provides the necessary selectivity and intermodulation protection.

4.2 Receiver Back-End(Refer to 330-400MHz Receiver Back End Schematic Diagram on page 6D-17)

The output of crystal filter FL301 is matched to the input of IF amplifier transistor Q302 bycomponents R352 and C325. Voltage supply to the IF amplifier is taken from the receive 5 volts (R5).The IF amplifer provides a gain of about 7dB. The amplified IF signal is then coupled into U301(pin 3)via C330, C338 and L330 which provides the matching for the IF amplifier and U301.

The IF signal applied to pin 3 of U301 is amplified, down-converted, filtered, and demodulated, toproduce the recovered audio at pin 27 of U301. This IF IC is electronically programmable, and theamount of filtering (which is dependent on the radio channel spacing) is controlled by themicroprocessor. Additional filtering, once externally provided by the conventional ceramic filters, isreplaced by internal filters in the IF module (U301).

The IF IC uses a type of direct conversion process, whereby the externally generated second LOfrequency is divided by two in U301 so that it is very close to the first IF frequency. The IF IC (U301)synthesizes the second LO and phase-locks the VCO to track the first IF frequency. The second LOis designed to oscillate at twice the first IF frequency because of the divide-by-two function in the IFIC.

In the absence of an IF signal, the VCO will “search” for a frequency, or its frequency will vary close totwice the IF frequency. When an IF signal is received, the VCO will lock onto the IF signal. Thesecond LO/VCO is a Colpitts oscillator built around transistor Q320. The VCO has a varactor diode,CR310, to adjust the VCO frequency. The control signal for the varactor is derived from a loop filterconsisting of C362, C363, C364, R320 and R321.

The IF IC (U301) also performs several other functions. It provides a received signal-strengthindicator (RSSI) and a squelch output. The RSSI is a dc voltage monitored by the microprocessor,and used as a peak indicator during the bench tuning of the receiver front-end varactor filter. TheRSSI voltage is also used to control the automatic gain control (AGC) circuit at the front-end.

The demodulated signal on pin 27 of U301 is also used for squelch control. The signal is routed toU404 (ASFIC) where squelch signal shaping and detection takes place. The demodulated audiosignal is also routed to U404 for processing before going to the audio amplifier for amplification.

Page 201: Motorola Gp328 338 Service Manual

Receiver 6D-7

4.3 Automatic Gain Control Circuit(Refer to 330-400MHz Receiver Front End Schematic Diagram on page 6D-16)

The front end automatic gain control circuit is to provide automatic gain reduction of the front end RFamplifier via feedback. This action is necessary to prevent overloading of backend circuits. This isachieved by drawing some of the output power from the RF amplifier’s output. At high radiofrequencies, capacitor C331 provides the low impedance path to ground for this purpose. CR308 is aPIN diode used for switching the path on or off. A certain amount of forward biasing current is neededto turn the PIN diode on. Transistors Q315 provides this current where upon saturation, current willflow via R347, PIN diode, collector and emitter of Q315 and R319 before going to ground. Q315 is anNPN transistor used for switching here. Maximum current flowing through the PIN is mainly limited bythe resistor R319.

Radio signal strength indicator, RSSI, a voltage signal, is used to drive Q315 to saturation henceturning it on. RSSI is produced by U301 and is proportional to the gain of the RF amplifier and theinput RF signal power to the radio.

Resistor network at the input to the base of Q315 is scaled to turn on Q315, hence activating theAGC, at certain RSSI levels. In order to turn on Q315, the voltage across the transistor’s base toground must be greater or equal to the voltage across R319, plus the base-emitter voltage (Vbe)present at Q315. The resistor network with thermistor RT300 is capable of providing temperaturecompensation to the AGC circuit, as RSSI generated by U301 is lower at cold temperaturescompared to normal operation at room temperature. Resistor R300 and capacitor C397 form an R-Cnetwork used to dampen any transient instability while the AGC is turning on.

Page 202: Motorola Gp328 338 Service Manual

6D-8 Frequency Generation Circuitry

5.0 Frequency Generation Circuitry

The Frequency Generation Circuitry is composed of two main ICs, the Fractional-N synthesizer(U201), and the VCO/Buffer IC (U241). Designed in conjunction to maximize compatibility, the twoICs provide many of the functions that normally would require additional circuitry. The synthesizerblock diagram illustrates the interconnect and support circuitry used in the region. Refer to therelevant schematics for the reference designators.

The synthesizer is powered by regulated 5V and 3.3V which come from U247 and U248 respectively.The synthesizer in turn generates a superfiltered 4.5V which powers U241.

In addition to the VCO, the synthesizer must interface with the logic and ASFIC circuitry.Programming for the synthesizer is accomplished through the data , clock and chip select lines fromthe microprocessor. A 3.3V dc signal from synthesizer lock detect line indicates to the microprocessorthat the synthesizer is locked.

Transmit modulation from the ASFIC is supplied to pin10 of U201. Internally the audio is digitized bythe Fractional-N and applied to the loop divider to provide the low-port modulation. The audio runsthrough an internal attenuator for modulation balancing purposes before going out to the VCO.

Figure 6-3: Frequency Generation Unit Block Diagram

VoltageMultiplier

SynthesizerU201

DualTran-sistor

LoopFilter

VCOBICU241

LowPassFilter

MatchingNetwork

Attenuator

ToMixer

ToPA Driver

VCP

Vmult1Aux3

Aux4

MOD Out

ModulatingSignal

Vmult2

Rx VCO Circuit

Tx VCO Circuit

TRB

16.8 MHzRef. Osc.

Rx Out

Tx Out

Page 203: Motorola Gp328 338 Service Manual

Frequency Generation Circuitry 6D-9

5.1 Synthesizer(Refer to 330-400MHz Synthesizer Schematic Diagram on page 6D-18)

The Fractional-N Synthesizer uses a 16.8MHz crystal (FL201) to provide a reference for the system.The LVFractN IC (U201) further divides this to 2.1MHz, 2.225MHz, and 2.4MHz as referencefrequencies. Together with C206, C207, C208, R204 and CR203 , they build up the referenceoscillator which is capable of 2.5ppm stability over temperatures of -30 to 85°C. It also provides16.8MHz at pin 19 of U201 to be used by ASFIC and LVZIF.

The loop filter which consist of C231, C232, C233, R231, R232 and R233 provides the necessary dcsteering voltage for the VCO and determines the amount of noise and spur passing through .

In achieving fast locking for the synthesizer, an internal adapt charge pump provides higher current atpin 45 of U201 to put synthesizer within the lock range. The required frequency is then locked bynormal mode charge pump at pin 43 .

Both the normal and adapt charge pumps get their supply from the capacitive voltage multiplier whichis made up of C258, C259, C228, triple diode CR201 and level shifters U210 and U211. Two 3.3Vsquare waves ( 180 deg out of phase) are first shifted to 5V, then along with regulated 5V , putthrough arrays of diodes and capacitors to build up 13.3V at pin 47 of U201.

Figure 6-4 Synthesizer Block Diagram

DATA

CLK

CEX

MODIN

VCC, DC5V

XTAL1

XTAL2

WARP

PREIN

VCP

REFERENCEOSCILLATOR

VOLTAGEMULTIPLIER

VOLTAGECONTROLLEDOSCILLATOR

2-POLELOOPFILTER

DATA (U409 PIN 100)

CLOCK (U409 PIN 1)

CSX (U409 PIN 2)

MOD IN (U404 PIN 40)

+5V (U247 PIN 4)

7

8

9

10

13, 30

23

24

25

32

47

VMULT2 VMULT1

BIAS1

SFOUT

AUX3

AUX4

IADAPTIOUT

GND

FREFOUT

LOCK 4

19

6, 22, 23, 24

4345

3

2

28

14 15

40

FILTERED 5V

STEERINGLINE

LOCK (U409 PIN 56)

PRESCALER IN

LO RF INJECTION

TX RF INJECTION(1ST STAGE OF PA)

FREF (U201 PIN 21 & U404 PIN 34)

39BIAS2

41

DUALTRANSIS

DUALTRANSIS-

48

5VR5

5, 20, 34, 36(U248 PIN 5)

AUX1

VDD, 3.3V MODOUT

U251LOW VOLTAGEFRACTIONAL-NSYNTHESIZER

TORS

TORS

Page 204: Motorola Gp328 338 Service Manual

6D-10 Frequency Generation Circuitry

5.2 VCO - Voltage Controlled Oscillator(Refer to 330-400MHz Voltage Controlled Oscillator Schematic Diagram on page 6D-19)

Figure 6-5 VCO Block Diagram

The VCOBIC (U241) in conjunction with the Fractional-N synthesizer (U201) generates RF in boththe receive and the transmit modes of operation. The TRB line (U241 pin 19) determines whichoscillator and buffer will be enabled. A sample of the RF signal from the enabled oscillator is routedfrom U241 pin 12, through a low pass filter, to the prescaler input (U201 pin 32). After frequencycomparison in the synthesizer, a resultant CONTROL VOLTAGE is received at the VCO. Thisvoltage is a DC voltage between 3.5V and 9.5V when the PLL is locked on frequency.

Presc

RX

TX

MatchingNetwork

Low PassFilter

Attenuator

Pin8

Pin14

Pin10

Level ShifterNetwork

5V

(U201 Pin28)

VCC Buffers

TX RF Injection

U201 Pin 32

AUX4 (U201 Pin3)

AUX3 (U201 Pin2)

Prescaler Out

Pin 12Pin 19Pin 20

TX/RX/BSSwitching Network

U241VCOBIC

RxActive Bias

TxActive Bias

Pin2

Rx-I adjust

Pin1

Tx-I adjust

Pins 9,11,17Pin18

VsensCircuit

Pin15

Pin16

RX VCOCircuit

TX VCOCircuit

RX Tank

TX Tank

Pin7

Vcc-Superfilter

Collector/RF in

Pin4

Pin5

Pin6

RX

TX

(U201 Pin28)

Rx-SW

Tx-SW

Vcc-Logic

(U201 Pin28)

Steer LineVoltage(VCTRL)

Pin13

Pin3

TRB_IN

LO RF INJECTION

VSF

VSF

VSF

Page 205: Motorola Gp328 338 Service Manual

Frequency Generation Circuitry 6D-11

The VCOBIC(U241) is operated at 4.54 V (VSF) and Fractional-N synthesizer (U201) at 3.3V. Thisdifference in operating voltage requires a level shifter consisting of Q260 and Q261 on the TRB line.

The operation logic is shown in Table 6-1.

In the receive mode, U241 pin 19 is low or grounded. This activates the receive VCO by enabling thereceive oscillator and the receive buffer of U241. The RF signal at U241 pin 8 is run through amatching network. The resulting RF signal is the LO RF INJECTION and it is applied to the mixer atT302 (refer to 330-400MHz Receiver Front End Schematic Diagram on page 6D-16).

During the transmit condition, when PTT is depressed, five volts is applied to U241 pin 19. Thisactivates the transmit VCO by enabling the transmit oscillator and the transmit buffer of U241. The RFsignal at U241 pin 10 is injected into the input of the PA module (U101 pin16). This RF signal is theTX RF INJECTION. Also in transmit mode, the audio signal to be frequency modulated onto thecarrier is received through the U201 pin 41.

When a high impedance is applied to U241 pin19, the VCO is operating in BATTERY SAVER mode.In this case, both the receive and transmit oscillators as well as the receive transmit and prescalerbuffer are turned off.

Table 6-1: Level Shifter Logic

DesiredMode AUX 4 AUX 3 TRB

Tx Low High (@3.2V) High (@4.8V)

Rx High Low Low

Battery Saver Low Low Hi-Z/Float (@2.5V)

Page 206: Motorola Gp328 338 Service Manual

6D-12 Notes For All Schematics and Circuit Boards

6.0 Notes For All Schematics and Circuit Boards* Component is frequency sensitive. Refer to the Electrical Parts List for value and usage.

1. Unless otherwise stated, resistances are in Ohms (k = 1000), and capacitances are in picofarads(pF) or microfarads (µF).

2. DC voltages are measured from point indicated to chassis ground using a Motorola DC multime-ter or equivalent. Transmitter measurements should be made with a 1.2 µH choke in series withthe voltage probe to prevent circuit loading.

3. Reference Designators are assigned in the following manner:

100 Series = Transmitter

200 Series = Frequency Generation

300 Series = Receiver

400/500 Series = Controller

600 Series = Keypad Board

4. Interconnect Tie Point Legend:

UNSWB+ = Unswitch Battery Voltage (7.5V)

SWB+ = Switch Battery Voltage (7.5V)

R5 = Receiver Five Volts

CLK = Clock

Vdda = Regulated 3.3 Volts (for analog)

Vddd = Regulated 3.3 Volts (for digital)

CSX = Chip Select Line (not for LVZIF)

SYN = Synthesizer

DACRX = Digital to Analog Voltage (For Receiver Front End Filter)

VSF = Voltage Super Filtered (5 volts)

VR = Voltage Regulator

6-LAYER CIRCUIT BOARD DETAIL VIEWINGCOPPER STEPS IN PROPER LAYER SEQUENCE

LAYER 1 (L1)

LAYER 2 (L2)LAYER 3 (L3)LAYER 4 (L4)

LAYER 5 (L5)LAYER 6 (L6)

INNER LAYERS

SIDE 1

SIDE 2

Page 207: Motorola Gp328 338 Service Manual

Circu 6D-13

7.0

R300

Q315

R31

6

8

25

RT

300

01

R31

9R

334

5

VR300

C397

CR

308

C38

1

3

2

Q110

1

20

173

4

L106

C11

3

119

171

C111

C18

1

C109

PB501

VR440 C521

C50

2

VR501

Q505

R506

R505

R50

7C

505

C512 C513 Q502

R50

2

SH321

CR

310

Q320 R34

5

R32

0

R355

R32

2

R346

R321

R32

4

L325

L332

C350

C362

C36

4

C352C351

C349

C35

4

C363

C353C384

C385

R34

2

R301

R302

SH301

L301

L302

CR301

CR302

C30

8

C304

C301

C30

3C

302

C30

5

CR5032

3 4

R501

C520VR443

C51

1

C51

4

PB

505

C33

1

L116

C141

C140

SH100

L101L102

L104

L105C

R10

1

CR102

C102

C10

4

C10

3

C106

C107

C188

C10

1

R317R336

C333

C396

ZMY0130348-O

330-400MHz Main Board Top Side PCB No. 8485726Z01

http

://w

ww.m

yrad

io16

8.na

me

it Board/Schematic Diagrams and Parts List

Circuit Board/Schematic Diagrams and Parts List

E409 E407R410

R418

R43

7

32 17

U406

116

17 22

8 21

U405

J400

1

40

C426 C425

E408

C42

3

TP401

TP402

TP410

R435

C443C444 RT400

C427 C4288

5 4

1

U407

L401

VR

447

C429

C424

R428

R42

9

R49

2

SH400

R478

R40

8

21

1

J403

20

22

VR450TP405

R42

1

L400

VR

434

TP406 TP415

D40

3

R450

Q41

7 34

R477

C441

C490

C491

C492

C493C494

C495

C496

C497

C471

C473

C472

VR

449

Q403

Q40

0

Q405

34

R401

R40

2

R40

3

R405

R407

R41

6 R44

6

R448

R476

R481

R40

6

R447

R427

SH401

U40085

4

D401

CR

440

C40

1

C402

C40

0

C467

C48

2

C403

C48

0

PB502PB503

C21

6

C43

2

FL201

1 3

46

TP

201

B503 B504

C257

C292

C22

8

C22

9

CR

201

C21

2

C21

0

TP202

TP302

C238

Q210

34

Q26

0 34

R25

6

R255

R206SH201

L232

L201 L2

02

L203

U247

C211

C213

C21

4

C220

C23

0

C260

C29

4

C29

7

C23

3

C203

C21

7

C23

5

C29

1

C28

2 C28

3

SH241

C251

C253

C289 Q26134R260 R248

C247 C248

L282

C273

3

L243

1

R24

3C

286

R25

3 C28

5C

272

R33

9C

370

C38

6

R33

3

L271

L273

L321

C37

4C

276

C27

1

3

L253

1

Q241

PB504

R35

1

R352

FL3

01

SH323

L311

C325

C324 C323

VR

444

Q316

R31

R3

RT3

R338

R32

7

R32

6

R33

R314

C328

C39

1

T301

3 4

6

T302

34

6

R30

9

R30

8

R310

R348

SH303

L310

L309C37

5

C32

0C319

C32

2

R10

7

R108

L160 C121

C160

C12

0

U101

9

8

16

1

R16

1C

161

C16

9

L113

C112

L108

R1

R17

1

R

R19

3

R10

4

R17

R10

6

SH101

L115

L117

L114

L107

L109

C11

8

C12

5

C16

5

C127

C11

0

C11

4

C

C12

2 C166

C

C131C19

3

C117

C115

C116

C129

C18

0

Page 208: Motorola Gp328 338 Service Manual

6D-14 Circuit Board/Schematic Diagrams and Parts List

Q310

R25

2

R25

1

R24

5

R331R330

R33

2R

254

L251

U24

1

201

11

CR

251

CR

252

C25

5

C372

C252C256

C254

C371

C373

R204

R281

02

U210

3

4

U211

3 4

13

25

U201

CR203264

C20

2

C21

8

224

C29

6

C29

8

C20

7

C20

6C

258

C25

9

C204

263 C208

C265

Y20

1

43

2

C523

Q41

6

R409R41

1 R457R462

R46

1

R43

2

R46

3R

414

R415

R460

R42

6

R42

0

R419

3

FL4

01

E400

E40

1

E402E40

3

E404

E405

E406

M400

SH402

L410

L411U41

0

U40

9

265176

1

D40

2

C431

C44

9

C45

3

C45

6

C458

C459

C46

3

C466

C434

C43

5

C433

C43

6

C437

Q410

34

R400

R41

3

R436

R475

R43

4

R42

5R44

5R

449

R424

R472

R423 R431

R471

M401

SH403

U420

10

20

1

11

13

2537

1

U404C408

C44

7

C45

1

C40

9

C41

1

C41

4

C42

2

C450

C42

0C

415

C40

7

C410

C41

6

C42

1

C430

C44

8C479

C481

C476

C440

C45

2

C41

9 C475

R47

3

VR

432

VR

433

VR445

VR446

VR448

C445

C442

ZMY0130347-O

330-40

http

://w

ww.m

yrad

io16

8.na

me

2

S50

23 5

4

4C

8C

S50

1

2

1

J101

4

3

2

J102

Q111

34

R101

R17

0

M100

CR

103

P10

0C10

8

R172

R13

3

H10

1

CR105

C172

C13

2

C17

3

R10

2

R131

R130R132

R109

L112

25

9

17

U10

2

1

C133

C10

5

C130

C138 C151

C170

C17

4

C13

4

C128

C13

5

C150C152

C12

6

Q30

1R

304

R34

0

R30

5R32

8

R30

6

R30

7

R303 R34

7

SH302

L340L3

04

L306 L307L3

03

L305C

R30

4

CR

305

CR

303

C309

C315

C32

1

C39

5

C30

7

C310C

314

C380

C31

2C318

C316C313

C31

7

C306C31

1

R344R350

R34

3

M301

SH322

L331

L314

132537

1

U30

1

C33

7

C383C390

C33

4

C35

6

C32

9

C33

6

C344

C34

5

C346

C34

7

C34

8

C360

C33

9

C34

0

C34

1

C34

2

C35

5

C361C343

C357

C38

2

C358

C359

Q30

2R

315

R31

3

R311R312

M101

L330

B50

1

32

1

C32

7

C338

C32

6

C33

0

R20

5

L505

U248

VR

441

VR

442

VR506

C277

C522

C278

C27

9

C215

R32

9

F50

1

E101

SH304

CR501

VR

439

CR306

C503

C123

R11

1

R241R242

R24

4

R349

R11

0R

112

M300

SH242

L241

L242

L281

10

CR242

CR243

CR241

C24

1

C246

C28

1

C29

5

C24

4

C243 C245

C24

2

C250

C37

8

R23

1R

232

R201

R23

3

R202

SH2

L261

37

1

C20

1

C

C223

C

C23

1

C234

C219

C29

3

C232

C

0MHz Main Board Bottom Side PCB No. 8485726Z01

Page 209: Motorola Gp328 338 Service Manual

Circu 6D-15

100pFC503 VR506

6.8V10VVR439

L505390nH

24V

21

F501

TT_CODE

BATT –

BATT +

RADIO_CODEBATTERY_CONTACT

CONN_J

B501

2 DATA1 NEG3 POS

6.8VVR443

12SWITCHPB505

.01uFC520

47KR506

050K

GREEN_LED

1

38

330-400MHz Controls And Switches Schematic Diagram

http

://w

ww.m

yrad

io16

8.na

me

it Board/Schematic Diagrams and Parts List

DEMOD

LVZIF_SEL

RSSI

16.8MHz

CLK

DACRx

DATA

Vdda

Vdda

RX_IN RX_INJ

R5

RECEIVER

DATA

CLK

DACRX

DEMOD

RSSI

LVZIF_SEL

16.8MHz

RX_INJ

SWB+

TX_INJ

Vdda

FGU

16.8MHz4V_3.3V

5V

CLK

CSX

DATA

LOCK

MODIN

R5CSX

4V_3.3V

SWB+

LOCK

MODIN

5V

DATA

RESETRX_IN TX_INJ

UNSWB+

TRANSMITTER

5V

CLK

CSX

5VUNSWB+

RESET

B503

B504

LI_ION

C505100pF

R5070

C5020.47uF

VR5016.8V

1

5

HIG

H

3 2

SWITCHS502

4

LOW

Vdda

VOL

MECH_SWB+

2

CR5011

BAUNSWB+

PB501

12SWITCH

.01uFC521

6.8VVR440

SB1

12

PB502SWITCH

C522.01uF

VR4416.8V

PB503

SB2

C523.01uF 6.8V

VR442

SWITCHPB504

12

12SWITCH

VR4446.8V

PTT

SB3

EMER

Q505

R51

Vdda

IMX1

51

6

24

3

SWB+

RED_LED

Q502

680R501

180R502

4

1 3CR503

2

RTA0

RTA1

RTA2

RTA3

100pFC514

100pFC513

100pFC511

100pFC512

SWITCHS501

GND GND

PCPC2C0C1

PC0PC1

4C0C1

12

7 9

Page 210: Motorola Gp328 338 Service Manual

6D-16 Circuit Board/Schematic Diagrams and Parts List

RX_

NUC381

R3290

C318

12pFC317

8.2 pF

T301

4

6

3

1

2

XFMR

TP302

T302XFMR

46

31 2

C320 C3197.5pF 1.8pF

16.28nHL309R348

3.6K

R338R335

RT301

2 1

C391

NUNU

NUNU

R5

C370100pF

R330RSSI

RX_INJ

NUR331 C372

Q3101

3

2

C371

100pFC386

NU

NUNUNU

0R349

100pFC374

C378C373NU NU

C375

VCOBUF

100pF

R332

L321

0R339

R5

NU

NU

R333NU

R30918

82pFC322

L310150nH

270R308

270R310

2

34

1

CR306

IF

[email protected]@399.725MHz

[email protected]

[email protected]@354.625MHz

-50dBm

ZMY0130352-O

330-40

http

://w

ww.m

yrad

io16

8.na

me

L340390nH

HSMP38201

23

CR308

R3171K

100pFC395 C331

100pF

1KR347

R5

C311

100KR307R306

100K

CR304

C306

CR305

C3128.2pF

22nHL305

C31312pF

L30619.71nH19.71nHL307

5.1 pFC316

NU

NU

R305470

R30412K

C321100pF

C309100pF

R3031 K

Q301

13

2

C3070.1uF

0.1uFC314

180nHL304

C315100pF

C3100.1uF

R3282.7

L30333nH

R3408.2K

19.71nHL302

C308100pF

100KR301

12pFC302

C30512pF

CR301 CR302

5.1pFC303

11pFC304

R302

L301

100K

19.71nH1

CR303

2

3

C3018.2pF

IN

1

SH304SHIELD

1

SHIELDSH302

1

SHIELDSH301 SH303

SHIELD

1

RXFE Top Shield RXFE Bottom Shield Mixer Shield

RX Mixer Diode Shield

.01uFC380

100KR342

R5

DACRx

R336

C333R5

NU

NU

33KR327

R31691K

Q315

13

218KR318

R319150

C396NU

R3002.2K

1uFC397

1

33.0KRT300

2

R334

Q316

13

2VR300

R326

NU

NU

NU

NU

R3256.8K

[email protected]@399.725MHz

1.797V@

0.508V

4.396V

2.285V

[email protected]@399.725MHz

Note:Rx1 = [email protected] rf signalRx2 = [email protected] rf signalprobed using high impedence probe

0MHz Receiver Front End Schematic Diagram

Page 211: Motorola Gp328 338 Service Manual

Circu 6D-17

DB

C383100pF

Hz

Vdd_FILTERED

C350330pF

C349.022uF

2KR324

C35120pF

BFQ67WQ320

1

3

212pFC352

0R355

43pFC353

C362.022uF

56pF 100nHL332C385

.01uFC364

CR310R3201K

R3212.4K

C3632.2uF

2.20uHL325

R34656K

200KR322

C35447pF

100pFC390

100KR350

uF45

DEMOD

SH322SHIELD

1

SH321SHIELD

1

LVZIF TOP SHIELD LVZIF BTM SHIELD

C38456pF

10KR345

3.185V 2.628V

2.095V

ZMY0130349-O

330-400MHz Receiver Back End Schematic Diagram

http

://w

ww.m

yrad

io16

8.na

me

it Board/Schematic Diagrams and Parts List

TE

ST

D

VA

G

VA

G_R

EF

VP

P

RE

D_V

CC

RE

D_V

SS

RO

SE

_VC

CR

OS

E_V

SS

RS

SI_

FLT

RS

SI_

OU

T

TESTAIOUT

LIM

MIX_BYP

MIX_IN

MLPD_CR

PH

AS

E_L

OC

K

PREAMP_OUTPRE_AGC

PR

E_I

N

EM

IT

EX

TB

S

FREFGND

GO

LD_V

CC GOLD_VSS

GREEN_VCC

GREEN_VSS

C4M

C4P

CEXCLK

COL

DATA

DE

MO

D_H

FD

EM

OD

_OU

T

BROWN_VCCBRP_OFF

C1M

C1P

C2M

C2P

C3M

C3P

AF

C

BA

SE

BLUE_VCCBLUE_VSS

U30132D83

1615

24

2120

14

1918

13

17

2223

32 2530 2931 2636 28 27333435

42

464748

41

43

37

403938

4544

8 931 2 54 116 107 12

0.1uFC336

C356.022uF

L3142.2uH

C3411uF

C3391uF

C337100pF

C3401uF

1uFC342

Vdd_FILTERED

R5C3550.33uF

100pFC327

C3280.1uF

2.4KR312

C338

C330

15pF

10pF

R314

330

3K

R313

30KR311

C326.01uF

Q302R351

0

3.3KR352

12KR315

680nHL330

.01uFC325C323

150pF

20pFC324

750nHL311

GN

D2

4

GN

D3

5

OUT3

IN6

TBDXTALFL301

GN

D1

GN

D1

2

IF

10uFC382

C3480.1uF

0.1uFC329

2.20uHL331 R343

10

0.1uFC344

Vdd_FILTERED

(SOURCE)

C3430.22uF

0.1uFC347

0.1uFC346

Vdda

.022uFC334

0.1uFC359

1200pFC358

R34412K

0.22uFC357

16.8M

CLKDATA

LVZIF_SEL

0.1C3

DA

C361.01uF

C360.022uF

RSSI

SH323SHIELD

1

CRYSTAL FILTER SHIELD

[email protected]

[email protected]

0.706V

2.683V

Page 212: Motorola Gp328 338 Service Manual

6D-18 Circuit Board/Schematic Diagrams and Parts List

_16.8MHZY201

NU

NUR206

SYNTHESIZER TOP SHIELD SYNTHESIZER BOTTOM SHIELD

SHIELDSH201

SHIELDSH202

L23212uH

47KR204

CR203

C238470pF

NUC208

T3

4.3KR255

30R256

R5

120

R232620

R231

0.1uFC233

560R233

C2310.1uF

C2340.47uF

C232.047uF

TP2021

MODOUT

100pFC277

2.2uFC278

4V_3.3V

C2792.2uFF

0

GND2

NC

4

3

ON

_OF

F*

VIN

1

VO

UT

5

U248LP2980

94pF 0.47uF

C293

Vdda

SWB+

VCTRL

7.5V

3.3V

[email protected]@400MHz

ZMY0130350-O

330-40

http

://w

ww.m

yrad

io16

8.na

me

VMULT3VMULT4

WARP

XTAL1XTAL2

SFOUT

TEST1TEST2

VMULT1VMULT2

INDMULT

IOUT

LOCK

MODOUTFREFOUT

IADAPT

AUX1AUX2AUX3AUX4

ADAPTSW

PD

_GN

DP

RE

_GN

D

DG

ND

AG

ND

SFCAP

SFIN

VBPASS

PREIN

PVREF

REFSEL

SFBASE

MODIN

NC1NC2NC3

CCOMP

CEXCLK

DATA

BIAS1BIAS2

VR

OV

CP

PD

_VD

DP

RE

_VD

D

DV

DD

AV

DD

141211

25

2324

28

3738

15

16

43

4

4119

45

48123

46

13 475 34 3620

26

30

21

32

35

18

27

10

172931

98

7

4039

42

44336 22

63A27U201

C2042.2uF

C264100pF

C263NU

C214100pF 100pF

C211R201

R202100K

82K

DATA

100pFC212C210

100pF

L26182nH

MODIN

CLKCSX

PRESC

C2021000pF100pF

C201

VSF

TP2011

330pFC206R281

4.7uFC203

C20739pF

NUNU

NU

R205

C215

FADJ 2

GN

D4

OUT3

VD

D

1

5V

C216

OSC

NU

1GND GND1

4

OUIN6

FL201

75Z04

100pFC260

100pFC213

5V

LOCK

AUX4

AUX3

Q210

2

4

1

3

16.8MHz

10K

47K

4.7K47K

100pC22

C2100

2.2uFC235C223

0.1uF

C2240.1uF

L2012.2uH

L2032.2uH

10uFC291

C2180.1uF

C2172.2uF

4OUT 3

SD

ADP3300U247

6ERR

1

GN

D

5IN

2NR

0.22uFC219

L2022.2uH

0.1uFC298

C2920.1uF

5V(SOURCE)

C282C283

3 K3

CR201

A1 6A2 5A3 4

K112 K2

NUNU

C2291000pF100pF

C230

.01uFC258

C2284.7uF

C259.01uF

TC7ST04FUU210

3GND

2

1NC

4

5VCC

0.1uFC296

5VCC

TC7ST04FUU211

3GND

2

1

NC

4

C257100pFC265

NU

1.65V

Low (mV)

High (3.3V) High (3.3V)

1.5V

2.3V

3.3V

Rx3.7V1.6V

Tx1.6V3.7V

39 Bias240 Bias1

0MHz Synthesizer Schematic Diagram

Page 213: Motorola Gp328 338 Service Manual

Circu 6D-19

.7pF245

L243

RESONATOR

1

2

3

7.5pFC250

7.5pFC242

6.8pFC243

1 2

CR243

A1 A2

CR241

C241100pF

390nHL242

390nHL241

CR242

R24310K

C2447pF

Rx_sw

F8

C2470.1uFC248

100pF

C253NU 100pF

C251CR252 CR251

13pFC252

13pFC256

180nHL251

VSF

VCTRL

RX_

TX_

2.9V Rx, 3.1V [email protected] Rx, 9.8V Tx@400MHz

ZMY0130351-O

330-400MHz Voltage Controlled Oscillator Schematic Diagram

http

://w

ww.m

yrad

io16

8.na

me

it Board/Schematic Diagrams and Parts List

TX_IADJ1

TX_OUT10

TX_SWITCH13

VC

C_B

UF

FE

RS

14

VC

C_L

OG

IC

18

RX_EMITTER6

RX_IADJ2

RX_OUT8

RX_SWITCH7

SUPER_FLTR3

TRB_IN19

TX_BASE16

TX_EMITTER15

COLL_RFIN4

FLIP_IN20

GN

D_B

UF

FE

RS

11G

ND

_FLA

G917

GN

D_L

OG

IC

PRESC_OUT12

RX_BASE5

50U54

U241

Rx_sw

Tx_sw

C2730.1uF

1pFC272

L27339nH

56nH

1pF

L271

C271

R245240

C2762.2uF

100pFC281

390nHL281

0.1uFC286

100pFC246

2C

180R242

100pFC285

R24120

12KR244

1

3

2 Q241BFQ67W

6.8pR24

L282390nH

R2537.5K

Tx_sw

C2542.7pF

R25122

L253

RESONATOR

1

2

3

100pFC289

100pFC255

R252200

R2545.6K

1KR260

4

1

3

Q261

2

10K

47K

47K

4.7K

2

4

1

3

Q260

C297.01uF

10K

4.7K

47K

47K

1

SHIELDSH242

1

SHIELDSH241

VCO TOP SHIELD VCO BOTTOM SHIELD

AUX 4

AUX 3

5V

VSF

PRESC

INJ

INJ

4.6V

2V

4.6V

4.6V

1.1V

Page 214: Motorola Gp328 338 Service Manual

6D-20 Circuit Board/Schematic Diagrams and Parts List

VL6 VLIM 19

TE

MP

30

V10

14

V45

16

17V5EXT

20VAR1

18VAR2

24VAR3

VG

15

22NA

Q11

QX

10

1 RFIN

RS 21

31R

SE

T

RX 23T12

CLK

26

CQ

12

CQ

X

13

DA

TA

28

F16

89

GND18

GN

D2

25

INT4U102H99S

AN

O32

BP

OS

27

CE

X29

CI3

CJ5

CL7

C138330pF

CR105

GND

3

1

PO

S

2VOUT

R131

LM50

10KR130

18K

330pFC170

C110330pF

0.1uFC126

.022uFC173

5V

TX_BIAS

RESET

UNSWB+

DATA

CLK

CSX

330pFC122

C105330pF

4

1

3

330pFC132

Q111

2

6

330pFC174

R133

UNSWB+

NU

10K

4.7K47K

47K

C1343300pF

C135.022uF

.022uFC131

22nHL114

12KR132

UNSWB+

7R

FO

UT

21

VC

NT

RL

14V

D1

2V

G1

3V

G2

GND1 5GND2 12GND3 13GND4

8N

C1

9N

C2

10N

C3

15N

C4

U10109Z67

11G

2 4

330pFC130

C128.022uF

56nHL112

R1085.6K

.022uFC152

UNSWB+

1

23

CR103

7.137V Tx

7.19V Tx

0.278V Tx

ZMY0130353-O

330-40

http

://w

ww.m

yrad

io16

8.na

me

1000pFC127

L115

C133

390nH

1000pF

C166330pF

L113

C129

5.6nH

20pF

100pFC165

200KR109

15pFC169

RF

IN6

RF

OU

T1

16

13pFC120

100pFC121

C150.022uFC151

330pF

C1610.1uF

200R161

L16015.0nH

15pFC160

NUC116 C117

9.1pF

11.03nHL109

NUL108

10R106

100pF

C115

C118

NU

C125100pF

100pFC295

300R112R110300

20R111

R107

C180

TX_INJ_1

TX_INJ

NU

NU

Microstrip Microstrip1

2

3C11122pF

C11256pF

L10733.47nH

0.075R102

L11722.0nH

C11310pF

BEADE101

C114330pFC123

10uF

200R172

0.1uFC172

C181

Q110 Microstrip

NU

L105C108330pF

390nH

240R170

240R101

C109100pF 7.66nH

L106

UNSWB+

3.3pF

1

A1

2

A2

K 3

C107

CR102

L104

4.7pFC106

RX_IN

CR101

L10219.61nH

L101

9.1pFC104C103

16pFC1029.1pF

C101100pF

4GND

1

2

3

J101RF_JACK

C141

TAB5 5

C140

TAB11TAB22

TAB3 3TAB4 4

ANTENNA_NUTJ102

23.57nHL116

HEATSINKH101

POS1

NU

NU

43KR120

330pFC119

330pFC171 R173

180K 43KR171

R174NU

SH100SHIELD

1

SHIELDSH101

1

HF SHIELD PA SHIELD

R10447K

C188100pF

19.61nH 19.61nH

R1920

R193200

C1930.1uF

[email protected] [email protected] Tx

0MHz Transmitter Schematic Diagram

Page 215: Motorola Gp328 338 Service Manual

Circu 6D-21

330

CircR

B501B503

B504

C101C102C103C104C105C106C107C108C109C110C111C112C113C114C117C118C119C120C121C122C123C125C126C127C128C129C130C131C132C133C134C135C138C150C151C152C160C161C165C166C169C170C171C172

0pF

0pF

6.3V0pF

F

0pFpF0pF

0pF

0pF

0pF

pFpF

0pF0pF

pF0pF

Description

C339 2180478Z20 1uFC340 2180478Z20 1uFC341 2180478Z20 1uFC342 2180478Z20 1uFC343 2113743A23 0.22uFC344 2113743M24 100000pFC345 2113743M24 100000pFC346 2113743M24 100000pFC347 2113743M24 100000pFC348 2113743M24 100000pFC349 2113743E07 0.022uFC350 2113743L05 330pFC351 2113743N33 20pFC352 2113743N28 12pFC353 2113743N41 43pFC354 2113743N42 47pFC355 2113743A24 0.33uFC356 2113743M08 22000pFC357 2113743A23 0.22uFC358 2113741A23 1200pFC359 2109720D14 0.1uF, low distortionC360 2113743E07 0.022uFC361 2113741F49 10000pFC362 2113743M08 22000pFC363 2311049A40 2.2uF, 10VC364 2113743L41 10000pFC370 2113743N50 100pFC374 2113743N50 100pFC375 2113743N50 100pFC380 2113743L41 10000pFC382 2311049A59 10uF, 6VC383 2113743N50 100pFC384 2113743N44 56pFC385 2113743N44 56pFC386 2113743N50 100pFC390 2113743N50 100pFC395 2113743N50 100pFC397 2311049A07 1uF, 16VC400 2113743L41 10000pFC401 2113743M24 100000pFC402 2113743M24 100000pFC403 2113743G24 2.2uFC407 2113928N01 0.1uFC408 2113743N50 100pFC409 2113743M24 100000pFC410 2113928N01 0.1uFC411 2113743M24 100000pFC414 2113743M24 100000pFC415 2185895Z01 0.01uF, low distortionC416 2113928N01 0.1uFC420 2113743L41 10000pF

CircuitRef

MotorolaPart No. Description

http

://w

ww.m

yrad

io16

8.na

me

it Board/Schematic Diagrams and Parts List

-400MHz Radio Parts List

uitef

MotorolaPart No. Description

0986237A02 Battery Contact Module3980502Z01 Backup Battery Contact, B+

( not used in GP328)3980501Z01 Backup Battery Contact, B-

( not used in GP328)2113740F51 100pF2113740F27 10pF2113740F32 16pF2113740F27 10pF2113743L05 330pF2113740F19 4.7pF2113740F15 3.3pF2113743L05 330pF2113740F51 100pF2113743L05 330pF2103689A46 22pF2180605Z34 56pF, high Q2180605Z16 10pF, high Q2113743L05 330pF2113743N36 27pF2113743N50 100pF2113743L05 330pF2113743N25 9.1pF2113743N50 100pF2113743L05 330pF2311049A18 10uF, 16V2113743N50 100pF2113743M24 100000pF2113743L17 1000pF2113743M08 22000pF2113743N33 20pF2113743L05 330pF2113743M08 22000pF2113743L05 330pF2113743L17 1000pF2113743L29 3300pF2113743M08 22000pF2113743L05 330pF2113743M08 22000pF2113743L05 330pF2113743M08 22000pF2113743N50 100pF2113743M24 100000pF2113743N50 100pF2113743L05 330pF2113743N30 15pF2113743L05 330pF2113743L05 330pF2113743E20 0.1uF

C173 2113743M08 22000pFC174 2113743L05 330pFC188 2113743N50 100pFC193 2113743M24 100000pFC201 2113743N50 100pFC202 2113743L17 1000pFC203 2311049A56 4.7uF, 10VC204 2104993J02 2.2uFC206 2113740F63 330pFC207 2113743N40 39pFC210 2113743N50 100pFC211 2113743N50 100pFC212 2113743N50 100pFC213 2113743N50 100pFC214 2113743N50 100pFC217 2104993J02 2.2uFC218 2113743M24 100000pFC219 2113743K16 0.22uFC220 2113743N50 100pFC223 2113743M24 100000pFC224 2113743M24 100000pFC228 2311049J11 4.7uF, 16VC229 2113743L17 1000pFC230 2113743N50 100pFC231 2113743M24 100000pFC232 2113743E12 0.047uFC233 2311049A01 0.1uF, 35VC234 2311049A05 0.47uF, 25VC235 2104993J02 2.2uFC238 2113741F17 470pFC241 2113743N50 100pFC242 2113743N23 7.5pFC243 2113743N22 6.8pFC244 2113740F13 2.7pFC245 2113743N12 2.7pFC246 2113743N50 100pFC247 2113743N50 100pFC248 2113743M24 100000pFC250 2113743N23 7.5pFC251 2113743N50 100pFC252 2113743N29 13pFC254 2113743N12 2.7pFC255 2113743N50 100pFC256 2113743N29 13pFC257 2113743N50 100pFC258 2113743L41 10000pFC259 2113743L41 10000pFC260 2113743N50 100pFC264 2113743N50 100pFC271 2113743N03 1pFC272 2113743N03 1pF

CircuitRef

MotorolaPart No. Description

C273 2113743M24 10000C276 2104993J02 2.2uFC277 2113743N50 100pFC278 2311049A57 10uFC279 2104993J02 2.2uFC281 2113743N50 100pFC285 2113743N50 100pFC286 2113743M24 10000C289 2113743N50 100pFC291 2311049A69 10uF,C292 2113743M24 10000C293 2113743A27 0.47uC294 2113743N50 100pFC295 2113743N50 100pFC296 2113743M24 10000C297 2113743L41 10000C298 2113743M24 10000C301 2113743N24 8.2pFC302 2113743N28 12pFC303 2113740L11 5.1pFC304 2113743N27 11pFC305 2113743N28 12pFC306 2113743N22 6.8pFC307 2113743M24 10000C308 2113743N50 100pFC309 2113743N50 100pFC310 2113743M24 10000C312 2113743N24 8.2pFC313 2113743N27 11pFC314 2113743M24 10000C315 2113743N50 100pFC316 2113740L11 5.1pFC317 2113743N27 11pFC318 2113743N24 8.2pFC319 2113743N21 6.2pFC320 2113743N20 5.6pFC321 2113743N50 100pFC322 2113743N48 82pFC323 2113743N54 150pFC324 2113743N33 20pFC325 2113743L41 10000C326 2113743L41 10000C327 2113743N50 100pFC328 2113743M24 10000C329 2113743M24 10000C330 2113743N26 10pFC331 2113743N50 100pFC334 2113743M08 22000C336 2113743M24 10000C337 2113743N50 100pFC338 2113743N30 15pF

CircuitRef

MotorolaPart No.

Page 216: Motorola Gp328 338 Service Manual

6D-22 Circuit Board/Schematic Diagrams and Parts List

C421C422C423C424C425C426C427C428C429C430C431C433C434C435C436C437C440C441C442C443C444C445C447C448C449C451C452C453C456C458C459C463C466C467C471C472C473C475C476C479C480C481C482C490C491C492C493C494C495C496C497

CircuiRef

e Clock Crystal Oscil-t used in GP328)eader

Nutnnectornnector

Jumper

resonator

resonator

escription

L340 2462587V41 390nHL400 2462587Q42 390nHL401 2462587Q42 390nHL410 2462587Q42 390nHL411 2462587Q42 390nHL505 2462587Q42 390nHP100 3905643V01 Ground Contact FingerPB501 4080523Z01 Tactile SwitchPB502 4080523Z01 Tactile SwitchPB503 4080523Z01 Tactile SwitchPB504 4080523Z01 Tactile SwitchPB505 4080523Z01 Tactile SwitchQ110 4802245J55 RF Power AmplifierQ111 4809939C05 NPN/PNP Dual TransistorQ210 4809939C05 NPN/PNP Dual TransistorQ241 4805218N63 RF NPN TransistorQ260 4809939C05 NPN/PNP Dual TransistorQ261 4809939C05 NPN/PNP Dual TransistorQ301 4802245J44 NPN TransistorQ302 4802245J44 NPN TransistorQ315 4880214G02 NPN TransistorQ320 4805218N63 RF NPN TransistorQ400 4809579E18 P-chan MOSFETQ403 4880214G02 NPN TransistorQ405 4802245J54 Dual NPN TransistorQ410 4802245J54 Dual NPN TransistorQ416 4809579E18 P-chan MOSFET

(not used in GP328)Q417 4809939C05 NPN/PNP Dual TransistorQ502 5180159R01 Dual NPN TransistorQ505 4880214G02 NPN TransistorR101 0662057A34 240R102 0680539Z01 0.1R104 0662057N15 47kR106 0662057M26 10R108 0662057M92 5600R109 0662057N30 200kR110 0662057M61 300R111 0662057M33 20R112 0662057M61 300R120 0662057N14 43kR130 0662057M98 10kR131 0662057N05 18kR132 0662057N33 270kR161 0662057M57 200R170 0662057A34 240R171 0662057N14 43kR172 0662057A32 200R173 0662057N29 180kR193 0662057M57 200R201 0662057N21 82k

CircuitRef

MotorolaPart No. Description

http

://w

ww.m

yrad

io16

8.na

me

2113928N01 0.1uF2113743M24 100000pF2113743N50 100pF2311049A59 10uF, 6V2113743M24 100000pF2113743N50 100pF2113743N50 100pF2113743M24 100000pF2113743M24 100000pF2113928N01 0.1uF2113743N50 100pF2113743L41 10000pF2113928N01 0.1uF (not used in GP328)2113743M24 100000pF2113743N34 22pF (not used in GP328)2113743N34 22pF (not used in GP328)2113743G26 4.7uF2113743N50 100pF2113743E20 0.1uF2113928N01 0.1uF2113743N50 100pF2113743N50 100pF2113743M08 22000pF2113928N01 0.1uF2113743N50 100pF2113743M08 22000pF2113743B29 1uF2113743N50 100pF2113743N50 100pF2113743N50 100pF2113743N50 100pF2113743N50 100pF2113743N50 100pF2113928N01 0.1uF2113743N50 100pF2113743L09 470pF2113743L09 470pF2113743H14 10uF2113928D08 10uF2113928N01 0.1uF2113743G26 4.7uF2113928N01 0.1uF2113928N01 0.1uF2113743N50 100pF2113743N50 100pF2113743N50 100pF2113743N50 100pF2113743N50 100pF2113743N50 100pF2113743N50 100pF2113743N50 100pF

t MotorolaPart No. Description

C502 2311049A05 0.47uF, 25VC503 2113743N50 100pFC505 2113743N50 100pFC511 2113743N50 100pFC512 2113743N50 100pFC513 2113743N50 100pFC514 2113743N50 100pFC520 2113743L41 10000pFC521 2113743L41 10000pFC522 2113743L41 10000pFC523 2113743L41 10000pFCR101 4880973Z02 Pin DiodeCR102 4802245J41 Pin DiodeCR103 4802245J41 Pin DiodeCR105 5185963A15 Temperature SensorCR201 4802233J09 Triple Diode (SOT-25)CR203 4862824C03 VaractorCR241 4805649Q13 VaractorCR242 4802245J22 VaractorCR243 4802245J22 VaractorCR251 4862824C01 VaractorCR252 4862824C01 VaractorCR301 4862824C08 VaractorCR302 4862824C08 VaractorCR303 4880154K03 Dual Common Anode-Cath-

ode DiodeCR304 4862824C08 VaractorCR305 4862824C08 VaractorCR306 4802245J42 Ring Quad Diode (SOT-143)CR308 4802245J41 Pin DiodeCR310 4862824C08 VaractorCR440 4813833C02 Dual Common Cathode DiodeCR501 4880107R01 RectifierCR503 4805729G49 Red/Yellow LEDD401 4802245J62 Schottky DiodeD402 4802245J62 Schottky DiodeD403 4802245J62 Schottky DiodeE101 2484657R01 Inductor beadE400 2480640Z01 Ferrite beadE401 2480640Z01 Ferrite beadE402 2480640Z01 Ferrite beadE403 2480640Z01 Ferrite beadE404 2480640Z01 Ferrite beadE405 2480640Z01 Ferrite beadE406 2480640Z01 Ferrite beadE407 2480640Z01 Ferrite beadE408 2480640Z01 Ferrite beadE409 2480640Z01 Ferrite beadF501 6580542Z01 3A FuseFL201 4805875Z04 16.8MHz Reference OscillatorFL301 9186153B01 45.1MHz Crystal Filter

CircuitRef

MotorolaPart No. Description

FL401 4870368G02 Real Timlator (no

H101 2680499Z01 Heat SprJ101 0985613Z01 RF JackJ102 0280519Z02 AntennaJ400 0905505Y04 40-pin coJ403 0905505Y02 20-pin coL101 2479990B02 19.61nHL102 2479990B02 19.61nHL104 2479990B02 19.61nHL105 2462587N22 390nHL106 2479990A02 7.66nHL107 2479990G01 33.47nHL108 0611077A01 ResistorL109 2479990B01 11.03nHL112 2462587N50 56nHL113 2413926H09 5.6nHL114 2462587N45 22nHL115 2462587N22 390nHL116 2460591C56 23.57nHL117 2409154M17 22nHL160 2413926H14 15nHL201 2462587Q20 2200nHL202 2462587Q20 2200nHL203 2462587Q20 2200nHL232 2462587P25 12000nHL241 2462587V41 390nHL242 2462587V41 390nHL243 2460593C02 Rx TeflonL251 2462587V37 180nHL253 2460593C02 Tx TeflonL261 2462587V33 82nHL271 2462587V31 56nHL273 2462587V29 39nHL281 2462587V41 390nHL282 2462587V41 390nHL301 2460591D24 19.71nHL302 2460591D24 19.71nHL303 2462587V28 33nHL304 2462587V37 180nHL305 2462587V23 12nHL306 2460591D24 19.71nHL307 2460591D24 19.71nHL309 2479990C02 16.28nHL310 2462587V36 150nHL311 2462587N65 750nHL314 2462587N72 2200nHL325 2480646Z20 2.2uHL330 2462587N64 680nHL331 2480646Z20 2.2uHL332 2462587N53 100nH

CircuitRef

MotorolaPart No. D

Page 217: Motorola Gp328 338 Service Manual

Circu 6D-23

* Motorola Depot Servicing only

R202R204R231R232R233R241R242R243R244R245R248R251R252R253R254R255R256R260R300R301R302R303R304R305R306R307R308R309R310R311R312R313R314R315R316R317R318R319R320R321R322R324R325R327R328R329R339R340R342R343R344

CircR

MISTOR_33KMISTOR_33Kency Knobe/on-off Switchnic Filter ShieldShield

esizer Top Shieldesizer Bottom Shieldop Shieldottom Shield

ver Front End Top

ver Front End Bottom

ShieldDiode Shield2nd LO ShieldShieldl Filter Shieldller Memory Shieldller On-off Shieldrocessor Shield

Cmp/Audio PA ShieldTransformerTransformerS Driver IC

CN Synthesizer ICerer

uffer ICgulatoregulatorICegulator

CMP ICROM 128K x 8OM 16K x 8rocessor

Description

U410 5102463J57 3.3V Regulator (not used inGP328)

U420 5102463J44 Audio AmplifierVR432 4805656W08 Quad Zener DiodeVR433 4805656W08 Quad Zener DiodeVR434 4802245J51 Zener Diode - 6.8VVR439 4880140L17 Zener Diode - 12VVR440 4802245J73 Zener Diode - 6.8VVR441 4802245J73 Zener Diode - 6.8VVR442 4802245J73 Zener Diode - 6.8VVR443 4802245J73 Zener Diode - 6.8VVR444 4802245J73 Zener Diode - 6.8VVR445 4802245J53 Zener Diode - 10VVR446 4802245J53 Zener Diode - 10VVR447 4802245J53 Zener Diode - 10VVR448 4802245J53 Zener Diode - 10VVR449 4802245J53 Zener Diode - 10VVR450 4802245J75 Zener Diode - 12VVR501 4813830A18 Zener Diode - 6.8VVR506 4802245J73 Zener Diode - 6.8V

8485726Z01 UHF Band 3 Main PCB

CircuitRef

MotorolaPart No. Description

http

://w

ww.m

yrad

io16

8.na

me

it Board/Schematic Diagrams and Parts List

0662057N23 100k0662057N15 47k0662057M52 1200662057M69 6200662057M68 5600662057M33 200662057M56 1800662057M98 10k0662057N01 12k0662057M59 2400662057M37 300662057M34 220662057M57 2000662057N03 15k0662057M92 56000662057M89 43000662057M37 300662057M74 10000662057M82 20000662057N23 100k0662057N23 100k0662057M74 10000662057N01 12k0662057M66 4700662057N23 100k0662057N23 100k0662057M60 2700662057M32 182113743N23 7.5pF0662057N10 30k0662057M83 24000662057M62 3300662057M85 30000662057N01 12k0662057A96 91k0662057M74 10000662057A79 18k0662057A29 1500662057M74 10000662057M83 24000662057N30 200k0662057M81 20000662057M94 68000662057N11 33k0662057M12 2.70662057M01 00662057M01 00662057M96 82000662057N23 100k0662057M26 100662057N01 12k

uitef

MotorolaPart No. Description

R345 0662057M98 10kR346 0662057N17 56kR347 0662057M74 1000R348 0662057M87 3600R349 0662057C01 0R350 0662057N23 100kR351 0662057C01 0R352 0662057M86 3300R355 0662057M01 0R400 0662057N15 47kR401 0662057M01 0R405 0662057M01 0R406 0662057N20 75kR407 0662057N19 68kR409 0662057M98 10kR410 0662057N23 100kR411 0662057M98 10kR413 0662057M01 0R414 0662057V34 180k, 1%R415 0662057V26 91k, 1%R416 0662057M90 4700R418 0662057M01 0R419 0662057M67 510 (not used in GP328)R420 0662057B46 10M (not used in GP328)R421 0662057M81 2000R423 0662057N39 470kR424 0662057N12 36kR425 0662057N10 30kR426 0662057N35 330k (not used in GP328)R427 0662057M84 2700R428 0662057M10 2.2R429 0662057M98 10kR431 0662057N39 470kR432 0662057N16 51kR434 0662057M62 330R435 0662057M81 2000R436 0662057M01 0R445 0662057N08 24kR446 0662057N22 91kR447 0662057N38 470kR448 0662057N06 20kR449 0662057N08 24kR450 0683962T45 68, 1WR457 0662057M98 10kR460 0662057M90 4700R461 0662057M56 180 (not used in GP328)R462 0662057M98 10k (not used in GP328)R463 0662057M61 300R471 0662057N06 20kR472 0662057N12 36kR473 0662057M26 10

CircuitRef

MotorolaPart No. Description

R475 0662057M01 0R476 0662057N35 330kR477 0662057M74 1000R478 0662057M98 10kR481 0662057N08 24kR492 0662057M01 0R501 0662057M70 680R502 0662057M56 180R505 0662057M98 10kR506 0662057N15 47kR507 0662057M01 0RT300 0680590Z01 THERRT400 0680590Z01 THERS501 4080710Z01 FrequS502 1880619Z02 VolumSH100 2680507Z01 HarmoSH101 2680510Z01 RF PASH201 2680511Z01 SynthSH202 2680511Z01 SynthSH241 2680513Z01 VCO TSH242 2680514Z01 VCO BSH301 2680554Z01 Recei

ShieldSH302 2680555Z01 Recei

ShieldSH303 2680509Z01 MixerSH304 2680624Z01 MixerSH321 2680508Z01 LVZIFSH322 2680514Z01 LVZIFSH323 2680553Z01 CrystaSH400 2680505Z01 ControSH401 2680506Z01 ControSH402 2680515Z01 MicropSH403 2680516Z01 Asfic_T301 2580541Z02 BalunT302 2580541Z02 BalunU101 5105109Z67 LDMOU102 5185765B26 PCICU201 5185963A27 LVFRAU210 5102463J61 InvertU211 5102463J61 InvertU241 5105750U54 VCO BU247 5105739X05 5V ReU248 5102463J58 3.3V RU301 5109632D83 LVZIFU400 5102463J40 3.3V RU404 5185130C53 Asfic_U406 *5102463J59 FlashU407 *5102463J64 EEPRU409 5102226J56 Microp

CircuitRef

MotorolaPart No.

Page 218: Motorola Gp328 338 Service Manual

6D-24 Circuit Board/Schematic Diagrams and Parts List

8.0

C397

Q315

R300

R316

8

R319

25

R334

35

38

RT300

01

VR300

C354

C362

C351

C364

C352

C349 C350

C353

C363

C384

C385

CR310

L325

L332

Q320

R355

R322

R345

R320

R321

R324

R346

SH321

C521

PB501

VR440

C505

C502

Q505

R506

R507

R505

VR501

C511

C512 C513

C514

CR5032

3 4

Q502

R502

R501

C520

PB505

VR443

C140

C141

L116

C101

C102

C104

C103

C106

C107

C188

CR101

CR102

L101L102

L104

L105

SH100

C304

C308

C301 C302

C305

C303

CR301

CR302

L301

L302

R301

R302

SH301

C331

C396

C333

CR308

R342

R317

R336

C381

71

C113

C181

3

2

Q110

173

75

76

C109

C111L106

330-40

http

://w

ww.m

yrad

io16

8.na

me

Circuit Board/Schematic Diagrams and Parts List

ZMY0130348-A

40

J400

1

U405

17

8 21

22

8

5 4

1

U407

C427 C428

C429

C424R408

R492

R429

R478

R428

C404

C444

C473

C443

L401

R435

RT400

TP401

TP402

TP410

VR447

VR449

C471C47221

1

J403

20

22

C441

C490

C491

C492

C493

C494

C495

C496

C497

CR413

L400

Q417 34

R477

R421

R450

TP405 TP406

VR434

VR450

TP415

C402

C467

C482

C403

C480

CR440

Q403

Q405

34

R454

R455

R456

R416

R448

R447

R452

R451

R481

R453

4

C401

CR412

R401

R402

R405

R407

R427

R476U400

85

Q400

C423

E407E408

E409

R418

R437

R410

C426 C425

1732

U406

116

SH400

C400

C406

R403

R406

SH401

PB503

B503

FL201

1 3

46

TP201

C216

C432

SH201

B504

PB502

C210

C211C212 C213

C214

C220

C230

C257

C260

C294

C292

C229

C282

C283

C203

C217

C235

C228

C233

C238

C297

C291

CR201

L201

L202

L203

L232

Q21034

Q26034

R206

R256

R255

U247

C247C251

C285

C289

C370

C374C386

C248 C273

C286

C276

C253

C271

C272

L282

3

L243

1

3

L253

1

L271

L273

L321

Q26134

Q241

R333

R339

R243

R248R253

R260

SH241

C324

C325

C323

FL301

L311

R351

R352

SH323

PB504

C328

C391

Q316

R326

R314

R31

R3

R327

R3

R3

RT3

VR444

C375

C320

C319

C322

L309

L310R308

R310

R309

R348

SH303

T301

3 4

6

T302

34

6

TP202

TP302

C119

C1

C115

C116

C117

C118

C121

C160

C120

C127

C180

L115

L107

L108

L109L117L160

R104R106

R107

R174R108

R120

R171

R1

R1

R1

U101

9

8

16

1

C161R161

C110

C114

C122

C166

C112C125

C165

C193

C131C129

C169

L113

L114

R193

SH101

0MHz Main Board Top Side PCB No. 8485726Z04

Page 219: Motorola Gp328 338 Service Manual

Circu 6D-25

Z

Y201

4

3

2 C436

C437

3

FL401

R463R414

R415

R420

R426

C431

C435

C433

CR411

Q416

R462R419

R460

SH402

C434

R461

U410

M400

C449

C463

C524

C525

E401E402E403

E404E405

E406

U409

2651

76 1

C523

C526

C528

C456

C466

C527

L410

L411

R409R411

R457

C458

C459

E400

C453

R432

C529

64

C218

24

C296

C298

C202

C265

C204

C206

C207

C208

C258

C259

63

CR203

R204

R281

2

13

25

U201U210

3

4

U211

3 4

C255

C372 C371

C373

C254C252

C256

CR251

CR252

L251

Q310

R330

R332

R254

R252

R251

R331

2

U241

20

11

C405

C408

C409

C411

C414

C422

C450C451

C415

C419

C420

C407

C410

C416

C421

C430

C447

C448

C479

C481

C476

C440

C452

C475

Q410

34

R400

R413

R436

R475

R471

R498

R499

R423

R425

R434

R424

R431

R445

R449

R472

SH403

13

2537

1

U404 U420

10

20

1

11

VR460

C445

C442

R473

VR432

VR433

VR445

VR446

VR448

M401

330-400MHz Main Board Bottom Side PCB No. 8485726Z04

http

://w

ww.m

yrad

io16

8.na

me

it Board/Schematic Diagrams and Parts List

MY0130347--O

2S502

3 5

4

4

C

8

CS501

2

C383

C390

C346

C343

C357C358

R344

C359

1325

37 1

U301

C345

C334

C337

C329

C336

C347

C348

C356C339

C340

C341

C342

C355

L314

SH322

C344

C360

C361

C382

L331

R343

R350

C327

C338

C326

C330

L330

Q302

R315

R311

R312

R313

B501

3

2

1

C277

C215

C279

C522

C278

L505

R205U248

VR441

VR442

VR506

M101M301

C309

C315

C321

C395

C307

C310

C314 C306C311

C380

C312

C318

C313

C317

C316CR304

CR305

CR303 L340

L304

L306 L307L303

L305Q301

R306

R307

R304

R303 R347

R305

R328

R340

SH302

C201

C2

C223

C2

C231

C219

C232

C234

C2

C293

L261

R201

R202

R231R232

R233

SH20

37

1

1

J101

4

3

2

J102

C108

CR160

CR103 Q111

34

R101

R170

C132

C173

C172

CR105

M100

P100 R133

R172

H101

C105

C130

C138 C151

C170

C174

C123

C126

C133

C128

C135

C150C152

C134

E101

L112

R102

R329

R109

R130

R131 R132

R136

25

917

U102

1

VR439

CR501

C503

CR306

F501SH304

C241

C246

C281

C295

C378

C242

C250

C243

C244

C245

CR241

CR242

CR243

L241

L242 L281

M300

R110

R112

R111

R241R242

R244

R245

R349

SH24

10

1

Page 220: Motorola Gp328 338 Service Manual

6D-26 Circuit Board/Schematic Diagrams and Parts List

130807-O

J

C512100pF

C513100pF

C514100pF

8C0 C0

C1C1

7GND GND1

9

1 PC02 PC14 PC2

PC3

S501SWITCH

_CONTACT

330-40

http

://w

ww.m

yrad

io16

8.na

me

ZMY0

C523.01uF

.01uFC522

B501

CONN_

DATA2

NEG1

POS3

B504 C5020.47uF

CR503

2 4

1 3

C520.01uF

5TAB5

390nHL505

J102

ANTENNA_NUT

1TAB1

2TAB2

3TAB3

4TAB4

VR501

5

3

HIG

H

TAB16

TAB27

2

6.8V

S502SWITCH

4

1

LOW

C511100pF

F501

21

24V

VR442

6.8V

PB503

12

VR4406.8V

SWITCH

R507

ifB503

M100

0

M101

VR4436.8V

Q505

680

RF_JACK

R501

C141

C140

4.3pF

12

12

PB504SWITCH

9.75nH

PB501SWITCH

L116

R50647K

CR5011

2

6

6.8VVR441

IMX1

51

100pFC505

SWITCHPB502

12

3

RF_JACKJ101

GND4

1

2

6.8VVR506

if

P100

R50510K

R502180

PB505SWITCH

12

C521.01uF

6.8VVR444

A2A3

K1K2K3

24

3

CR160

A1

VR43910V

C503100pF

LI_ION

BATT_CODE

RADIO_CODE

Vdda

MECH_SWB+

SB2

Vdda

VOL

UNSWB+

SB3

EMER

GREEN_LED

SWB+

RED_LED

RTA0

RTA1

RTA2

RTA3

SB1

PTT

BATTERY

BATT+

BATT-

Q502

NU

0MHz Controls And Switches Schematic Diagram

Page 221: Motorola Gp328 338 Service Manual

Circu 6D-27

R330

L30916.28nH

C31712pF

R332

C373

R331

R310270

C378

0

R333

R339

82pFC322

C370100pF

L321

270

CR306

2

34

1

R309

C391

18

VCOBUF

3.6KR348

C371

13

2

Q310

1.8pF

46

31 2

C319

XFMRT302

R338

3

1

2

T301XFMR

4

6

C3207.5pF

0R329

R335

100pFC375

C3188.2pF

2 1

150nHL310

RT301

C372

C374100pF

C381

TP302

R3490

C386100pF

RSSI

R5

IF

RX_IN

RX_INJ

R5

NU

NU

NU

NU

NU

NU NU

NU NU NU

NU NU NU NU

NU

R308

330-400MHz Receiver Front End Schematic Diagram

http

://w

ww.m

yrad

io16

8.na

me

it Board/Schematic Diagrams and Parts List

ZMY0130808-O

8.2pFC301

19.71nH

L302

C396

470R305 100pF

C315

2

1

RT30033.0K

8.2KR340

R3471K

C3140.1uF

150R319

C3035.1pF

2

3

1

CR303

100K

C311

R302

.01uFC380

1

L306

19.71nH

SH302SHIELD

C313

8.2pF

12pF

100pF C312

C305

C308R306

12pF

100K

CR301 L307

M300

19.71nH

C333

SHIELDSH304

1

L304180nH

CR302

C3165.1pF

100KR301

CR304

12KR304

R318

C310

18K

0.1uF

VR300

L30522nH

L340390nH

C302

SH301SHIELD

1

12pF

1KR303

CR305

R3002.2K

3

2

R326

Q316

100pFC331

2.7R328

0.1uFC307

C3971uF

1

R334

R336

SHIELDSH303

11pFC304

100KR307

91KR316

2

33nHL303

Q315

13

Q301

13

2

R3256.8K

C306

33KR327

C395100pF

CR308

R342

HSMP3820

C321

100K

100pF

19.71nHL301

R317

100pFC309

1K

R5

R5

R5

DACRx

2

31

1

NU

RXFE Top Shield RXFE Bottom Shield Mixer Shield

RX Mixer Diod Shield

NU

NU

NU

NUNU

NUNU

Page 222: Motorola Gp328 338 Service Manual

6D-28 Circuit Board/Schematic Diagrams and Parts List

IF

DB

C383100pF

Vdd_FILTERED

C350330pF

C349.022uF

2KR324

C35120pF

BFQ67WQ320

1

3

212pFC352

0R355

43pFC353

C362.022uF

56pF 100nHL332C385

.01uFC364

CR310R3201K

R3212.4K

C3632.2uF

2.20uHL325

R34656K

200KR322

C35447pF

100pFC390

100KR350

DEMOD

SH322SHIELD

1

SH321SHIELD

1

LVZIF TOP SHIELD LVZIF BTM SHIELD

C38456pF

10KR345

3.185V 2.628V

2.095V

ZMY0130349-O

330-40

http

://w

ww.m

yrad

io16

8.na

me

TE

ST

D

VA

G

VA

G_R

EF

VP

P

RE

D_V

CC

RE

D_V

SS

RO

SE

_VC

CR

OS

E_V

SS

RS

SI_

FLT

RS

SI_

OU

T

TESTAIOUT

LIM

MIX_BYP

MIX_IN

MLPD_CR

PH

AS

E_L

OC

K

PREAMP_OUTPRE_AGC

PR

E_I

N

EM

IT

EX

TB

S

FREFGND

GO

LD_V

CC GOLD_VSS

GREEN_VCC

GREEN_VSS

C4M

C4P

CEXCLK

COL

DATA

DE

MO

D_H

FD

EM

OD

_OU

T

BROWN_VCCBRP_OFF

C1M

C1P

C2M

C2P

C3M

C3P

AF

C

BA

SE

BLUE_VCCBLUE_VSS

U30132D83

1615

24

2120

14

1918

13

17

2223

32 2530 2931 2636 28 27333435

42

464748

41

43

37

403938

4544

8 931 2 54 116 107 12

0.1uFC336

C356.022uF

L3142.2uH

C3411uF

C3391uF

C337100pF

C3401uF

1uFC342

Vdd_FILTERED

R5C3550.33uF

100pFC327

C3280.1uF

2.4KR312

C338

C330

15pF

10pF

R314

330

3K

R313

30KR311

C326.01uF

Q302R351

0

3.3KR352

12KR315

680nHL330

.01uFC325C323

150pF

20pFC324

750nHL311

GN

D2

4

GN

D3

5

OUT3

IN6

TBDXTALFL301

GN

D1

GN

D1

2

10uFC382

C3480.1uF

0.1uFC329

2.20uHL331 R343

10

0.1uFC344

Vdd_FILTERED

(SOURCE)

C3430.22uF

0.1uFC347

0.1uFC346

Vdda

.022uFC334

0.1uFC359

1200pFC358

R34412K

0.22uFC357

16.8MHz

CLKDATA

LVZIF_SEL

0.1uFC345

DA

C361.01uF

C360.022uF

RSSI

SH323SHIELD

1

CRYSTAL FILTER SHIELD

[email protected]

[email protected]

0.706V

2.683V

0MHz Receiver Back End Schematic Diagram

Page 223: Motorola Gp328 338 Service Manual

Circu 6D-29

6

THESIZER TOP SHIELD SYNTHESIZER BOTTOM SHIELD

SHIELDSH201

SHIELDSH202

L23212uH

47KR204

CR203

C238470pF

NUC208

30R256

120

R232620

R231

0.1uFC233

560R233

C2310.1uF

C2340.47uF

C232.047uF

TP2021

MODOUT

100pFC277

10uFC278

4V_3.3V

C2792.2uF

GND2

NC

4

3

ON

_OF

F*

VIN

1

VO

UT

5

U248LP2980

SWB+

VCTRL

ZMY0130809-O

330-400MHz Synthesizer Schematic Diagram

http

://w

ww.m

yrad

io16

8.na

me

it Board/Schematic Diagrams and Parts List

VMULT3VMULT4

WARP

XTAL1XTAL2

SFOUT

TEST1TEST2

VMULT1VMULT2

INDMULT

IOUT

LOCK

MODOUTFREFOUT

IADAPT

AUX1AUX2AUX3AUX4

ADAPTSW

PD

_GN

DP

RE

_GN

D

DG

ND

AG

ND

SFCAP

SFIN

VBPASS

PREIN

PVREF

REFSEL

SFBASE

MODIN

NC1NC2NC3

CCOMP

CEXCLK

DATA

BIAS1BIAS2

VR

OV

CP

PD

_VD

DP

RE

_VD

D

DV

DD

AV

DD

141211

25

2324

28

3738

15

16

43

4

4119

45

48123

46

13 475 34 3620

26

30

21

32

35

18

27

10

172931

98

7

4039

42

44336 22

LVFractN ICU201

C2042.2uF

C264100pF

C263NU

C214100pF 100pF

C211R201

R202100K

82K

DATA

100pFC212C210

100pF

L26182nH

MODIN

CLKCSX

PRESC

C2021000pF100pF

C201

VSF

TP2011

330pFC206R281

4.7uFC203

C20739pF

NUNU

NU

R205

C215

FADJ 2

GN

D4

OUT3

VD

D

1

5V

C216

OSC_16.8MHZY201

NU

NU

NUR20

SYN

1GND GND1

4

OUT3

IN6

FL201

75Z04

100pFC260

100pFC213

5V

LOCK

AUX4

AUX3

4.3KR255

Q210

2

4

1

3 R5

16.8MHz

10K

47K

4.7K47K

100pFC220

C294100pF 0.47uF

C293

Vdda2.2uFC235C223

0.1uF

C2240.1uF

L2012.2uH

L2032.2uH

10uFC291

C2180.1uF

C2172.2uF

4OUT 3

SD

ADP3300U247

6ERR

1

GN

D

5IN

2NR

0.22uFC219

L2022.2uH

0.1uFC298

C2920.1uF

5V(SOURCE)

C282C283

3 K3

CR201

A1 6A2 5A3 4

K112 K2

NUNU

C2291000pF100pF

C230

.01uFC258

C2284.7uF

C259.01uF

TC7ST04FUU210

3GND

2

1NC

4

5VCC

0.1uFC296

5VCC

TC7ST04FUU211

3GND

2

1

NC

4

C257100pFC265

NU

Page 224: Motorola Gp328 338 Service Manual

6D-30 Circuit Board/Schematic Diagrams and Parts List

L243

SONATOR

1

2

3

7.5pFC250

7.5pFC242

6.8pFC243

1 2

CR243

A1 A2

CR241

C241100pF

390nHL242

390nHL241

CR242

C2447pF

Rx_sw

C2470.1uFC248

100pF

C253NU 100pF

C251CR252 CR251

13pFC252

13pFC256

180nHL251

VSF

VCTRL

RX_INJ

TX_INJ

ZMY0130810-O

330-40

http

://w

ww.m

yrad

io16

8.na

me

TX_IADJ1

TX_OUT10

TX_SWITCH13

VC

C_B

UF

FE

RS

14

VC

C_L

OG

IC

18

RX_EMITTER6

RX_IADJ2

RX_OUT8

RX_SWITCH7

SUPER_FLTR3

TRB_IN19

TX_BASE16

TX_EMITTER15

COLL_RFIN4

FLIP_IN20

GN

D_B

UF

FE

RS

11G

ND

_FLA

G917

GN

D_L

OG

IC

PRESC_OUT12

RX_BASE5

50U54

U241

Rx_sw

Tx_sw

C2730.1uF

1pFC272

L27339nH

56nH

1pF

L271

C271

R245240

C2762.2uF

100pFC281

390nHL281

0.1uFC286

100pFC246

2.7pFC245

180R242

100pFC285

R24120

12KR244

RE

R24310K

1

3

2 Q241BFQ67W

30R248

L282390nH

R25315K

Tx_sw

C2542.7pF

R25122

L253

RESONATOR

1

2

3

100pFC289

100pFC255

R252200

R2545.6K

1KR260

4

1

3

Q261

2

10K

47K

47K

4.7K

2

4

1

3

Q260

C297.01uF

10K

4.7K

47K

47K

1

SHIELDSH242

1

SHIELDSH241

VCO TOP SHIELD VCO BOTTOM SHIELD

AUX 4

AUX 3

5V

VSF

PRESC

0MHz Voltage Controlled Oscillator Schematic Diagram

Page 225: Motorola Gp328 338 Service Manual

Circu 6D-31

C132240pF

240pFC122

R133

240pFC105

240pFC110

.022uFC128

TX_BIAS

C1343300pF

VL19

VLIM

TE

MP

14V

10

16V

45

V5EXT17

VAR120

VAR218

VAR324

15V

G

6

22

11Q

10Q

X

RFIN1

21RS

RS

ET

31

23RX

2T1

30

CLK

12C

Q13

CQ

X28

DA

TA

9F

168

8GND1

25G

ND

2

4INT

NA

32A

NO

27B

PO

S

29C

EX

3CI

5CJ

7CL

26

2

6

4

1

3

H99S-4U102

Q111

C138240pF

5.6KR108

C170240pF

56nHL112

VD

1V

G1

VG

2

3

NC

18

NC

29

NC

3N

C4

17EP

G2

11

GND14

GND25

GND312

GND413

30C65U101

C130240pF

ANT_BIAS

R13118K

C131.022uF

C152

.022uFC173

36EG

22nH

L114

2

31

.022uF

CR103

PO

S1

VOUT2

C135

CR105LM50

3GND

C1260.1uF

R132270K

C174240pF

R13010K

UNSWB+

UNSWB+

RESET

5V

UNSWB+

DATA

CLK

CSX

UNSWB+

10 15

NU

10k

47k

4.7k

47k

.022uF

330-400MHz Transmitter Schematic Diagram

http

://w

ww.m

yrad

io16

8.na

me

it Board/Schematic Diagrams and Parts List

ZMY0130811-O

10R106

0.1R102

56pFC112

L1067.66nH Microstrip Microstrip

Microstrip

22pFC111

C109100pF

240pFC166

C150.022uF

C116

0R175

2

3

TX_OUT

C181NU

NU NU NU

Q1101

0.1uFC161

300R112

240pFC151R107

22.0nHL117

200R161

C12310uF

SH101SHIELD

1

R173180K

C11747pF

R10447K

300R110

5.6nHL113

C125100pF

R193200

C119240pF

20R111

C165100pF

200R172

240pF

10pF

C171

C113

C1271000pF

142

C16915pF

RF

IN16

RF

OU

T1

6

RF

OU

T2

7V

CN

TR

L1

C115

R17143K

C1930.1uF

R176NU

11.03nHL109

E101BEAD

100pFC118

100pFC295

C121100pF

C160100pF

L10733.47nH

1000pFC133

TX_INJ_1

R11M

240pF

L160

C114

0

15.0nH

L108

C12920pF

C1720.1uF

C1209.1pF

R109200K

R12043K

390nH

C180

L115

POS

R174

$P

H101HEATSINK

1

UNSWB+

TX_INJ

(91A11)

(91G24)

PS SHIELD

(Use 82K with new PA)

NU

NU

Page 226: Motorola Gp328 338 Service Manual

6D-32 Circuit Board/Schematic Diagrams and Parts List

330-4

CircuiRef

B501B503

B504

C101C102C103C104C105C106C107C108C109C110C111C112C113C114C115C116C117C118C119C120C121C122C123C125C126C127C128C129C130C131C132C133C134C135C138C140C141C150C151C152C160C161C165C166

F

F

VF

F

F

F

F

F

escription

C321 2113743N50 100pFC322 2113743N48 82pFC323 2113743N54 150pFC324 2113743N33 20pFC325 2113743L41 10000pFC326 2113743L41 10000pFC327 2113743N50 100pFC328 2113743M24 100000pFC329 2113743M24 100000pFC330 2113743N26 10pFC331 2113743N50 100pFC333 NOT PLACEDC334 2113743M08 22000pFC336 2113743M24 100000pFC337 2113743N50 100pFC338 2113743N30 15pFC339 2180478Z20 1uFC340 2180478Z20 1uFC341 2180478Z20 1uFC342 2180478Z20 1uFC343 2113743A23 0.22uFC344 2113743M24 100000pFC345 2113743M24 100000pFC346 2113743M24 100000pFC347 2113743M24 100000pFC348 2113743M24 100000pFC349 2113743E07 0.022uFC350 2113743L05 330pFC351 2113743N33 20pFC352 2113743N28 12pFC353 2113743N41 43pFC354 2113743N42 47pFC355 2113743A24 0.33uFC356 2113743M08 22000pFC357 2113743A23 0.22uFC358 2113741A23 1200pFC359 2109720D14 0.1uF, low distortionC360 2113743E07 0.022uFC361 2113741F49 10000pFC362 2113743M08 22000pFC363 2311049A40 2.2uF, 10VC364 2113743L41 10000pFC370 2113743N50 100pFC371 NOT PLACEDC372 NOT PLACEDC373 NOT PLACEDC374 2113743N50 100pFC375 2113743N50 100pFC378 NOT PLACEDC380 2113743L41 10000pFC381 NOT PLACED

CircuitRef

MotorolaPart No. Description

http

://w

ww.m

yrad

io16

8.na

me

00MHz Radio Parts List

t MotorolaPart No. Description

0986237A02 Battery Contact Module3980502Z01 Backup Battery Contact, B+

( not used in GP328)3980501Z01 Backup Battery Contact, B-

( not used in GP328)2113740F51 100pF2113740F27 10pF2113740F32 16pF2113740F27 10pF2113743L05 330pF2113740F19 4.7pF2113740F15 3.3pF2113743L05 330pF2113740F51 100pF2113743L05 330pF2103689A46 22pF2180605Z34 56pF, high Q2180605Z16 10pF, high Q2113743L05 330pFNOT PLACEDNOT PLACED2113743N36 27pF2113743N50 100pF2113743L05 330pF2113743N25 9.1pF2113743N50 100pF2113743L05 330pF2311049A18 10uF, 16V2113743N50 100pF2113743M24 100000pF2113743L17 1000pF2113743M08 22000pF2113743N33 20pF2113743L05 330pF2113743M08 22000pF2113743L05 330pF2113743L17 1000pF2113743L29 3300pF2113743M08 22000pF2113743L05 330pFNOT PLACEDNOT PLACED2113743M08 22000pF2113743L05 330pF2113743M08 22000pF2113743N50 100pF2113743M24 100000pF2113743N50 100pF2113743L05 330pF

C169 2113743N30 15pFC170 2113743L05 330pFC171 2113743L05 330pFC172 2113743E20 0.1uFC173 2113743M08 22000pFC174 2113743L05 330pFC180 NOT PLACEDC181 NOT PLACEDC188 2113743N50 100pFC193 2113743M24 100000pFC201 2113743N50 100pFC202 2113743L17 1000pFC203 2311049A56 4.7uF, 10VC204 2104993J02 2.2uFC206 2113740F63 330pFC207 2113743N40 39pFC208 NOT PLACEDC210 2113743N50 100pFC211 2113743N50 100pFC212 2113743N50 100pFC213 2113743N50 100pFC214 2113743N50 100pFC215 NOT PLACEDC216 NOT PLACEDC217 2104993J02 2.2uFC218 2113743M24 100000pFC219 2113743K16 0.22uFC220 2113743N50 100pFC223 2113743M24 100000pFC224 2113743M24 100000pFC228 2311049J11 4.7uF, 16VC229 2113743L17 1000pFC230 2113743N50 100pFC231 2113743M24 100000pFC232 2113743E12 0.047uFC233 2311049A01 0.1uF, 35VC234 2311049A05 0.47uF, 25VC235 2104993J02 2.2uFC238 2113741F17 470pFC241 2113743N50 100pFC242 2113743N23 7.5pFC243 2113743N22 6.8pFC244 2113740F13 2.7pFC245 2113743N12 2.7pFC246 2113743N50 100pFC247 2113743N50 100pFC248 2113743M24 100000pFC250 2113743N23 7.5pFC251 2113743N50 100pFC252 2113743N29 13pFC253 NOT PLACED

CircuitRef

MotorolaPart No. Description

C254 2113743N12 2.7pFC255 2113743N50 100pFC256 2113743N29 13pFC257 2113743N50 100pFC258 2113743L41 10000pFC259 2113743L41 10000pFC260 2113743N50 100pFC263 NOT PLACEDC264 2113743N50 100pFC265 NOT PLACEDC271 2113743N03 1pFC272 2113743N03 1pFC273 2113743M24 100000pC276 2104993J02 2.2uFC277 2113743N50 100pFC278 2311049A57 10uFC279 2104993J02 2.2uFC281 2113743N50 100pFC282 NOT PLACEDC283 NOT PLACEDC285 2113743N50 100pFC286 2113743M24 100000pC289 2113743N50 100pFC291 2311049A69 10uF, 6.3C292 2113743M24 100000pC293 2113743A27 0.47uFC294 2113743N50 100pFC295 2113743N50 100pFC296 2113743M24 100000pC297 2113743L41 10000pFC298 2113743M24 100000pC301 2113743N24 8.2pFC302 2113743N28 12pFC303 2113740L11 5.1pFC304 2113743N27 11pFC305 2113743N28 12pFC306 2113743N22 6.8pFC307 2113743M24 100000pC308 2113743N50 100pFC309 2113743N50 100pFC310 2113743M24 100000pC311 NOT PLACEDC312 2113743N24 8.2pFC313 2113743N27 11pFC314 2113743M24 100000pC315 2113743N50 100pFC316 2113740L11 5.1pFC317 2113743N27 11pFC318 2113743N24 8.2pFC319 2113743N21 6.2pFC320 2113743N20 5.6pF

CircuitRef

MotorolaPart No. D

Page 227: Motorola Gp328 338 Service Manual

Circu 6D-33

C382C383C384C385C386C390C391C395C396C397C400C401C402C403C404C405C406C407C408C409C410C411C414C415C416C419C420C421C422C423C424C425C426C427C428C429C430C431C432C433C434C435C436C437C440C441C442C443C444C445C447

CircR

Diode (SOT-25)tortortortortortortortor

ommon Anode-Cath-iodetortor

uad Diode (SOT-143)odetortky Diodetky Diodetky Diodeommon Cathode Diode

ierellow LEDor beadbeadbeadbeadbeadbeadbeadbeadbeadbeadbead

seHz Reference OscillatorHz Crystal Filterime Clock Crystal Oscil-

not used in GP328)preader

ckna Nutconnectorconnector

nHnHnH

HnHtor JumperH

Description

L112 2462587N50 56nHL113 2413926H09 5.6nHL114 2462587N45 22nHL115 2462587N22 390nHL116 2460591C56 23.57nHL117 2409154M17 22nHL160 2413926H14 15nHL201 2462587Q20 2200nHL202 2462587Q20 2200nHL203 2462587Q20 2200nHL232 2462587P25 12000nHL241 2462587V41 390nHL242 2462587V41 390nHL243 2460593C02 Rx Teflon resonatorL251 2462587V37 180nHL253 2460593C02 Tx Teflon resonatorL261 2462587V33 82nHL271 2462587V31 56nHL273 2462587V29 39nHL281 2462587V41 390nHL282 2462587V41 390nHL301 2460591D24 19.71nHL302 2460591D24 19.71nHL303 2462587V28 33nHL304 2462587V37 180nHL305 2462587V23 12nHL306 2460591D24 19.71nHL307 2460591D24 19.71nHL309 2479990C02 16.28nHL310 2462587V36 150nHL311 2462587N65 750nHL314 2462587N72 2200nHL321 NOT PLACEDL325 2480646Z20 2.2uHL330 2462587N64 680nHL331 2480646Z20 2.2uHL332 2462587N53 100nHL340 2462587V41 390nHL400 2462587Q42 390nHL401 2462587Q42 390nHL410 2462587Q42 390nHL411 2462587Q42 390nHL505 2462587Q42 390nHP100 3905643V01 Ground Contact FingerPB501 4080523Z01 Tactile SwitchPB502 4080523Z01 Tactile SwitchPB503 4080523Z01 Tactile SwitchPB504 4080523Z01 Tactile SwitchPB505 4080523Z01 Tactile SwitchQ110 4813828A09 RF Power AmplifierQ111 4809939C05 NPN/PNP Dual Transistor

CircuitRef

MotorolaPart No. Description

http

://w

ww.m

yrad

io16

8.na

me

it Board/Schematic Diagrams and Parts List

2311049A59 10uF, 6V2113743N50 100pF2113743N44 56pF2113743N44 56pF2113743N50 100pF2113743N50 100pFNOT PLACED2113743N50 100pFNOT PLACED2311049A07 1uF, 16V2113743L41 10000pF2113743M24 100000pF2113743M24 100000pF2113743G24 2.2uFNOT PLACEDNOT PLACEDNOT PLACED2113928N01 0.1uF2113743N50 100pF2113743M24 100000pF2113928N01 0.1uF2113743M24 100000pF2113743M24 100000pF2185895Z01 0.01uF, low distortion2113928N01 0.1uFNOT PLACED2113743L41 10000pF2113928N01 0.1uF2113743M24 100000pF2113743N50 100pF2311049A59 10uF, 6V2113743M24 100000pF2113743N50 100pF2113743N50 100pF2113743M24 100000pF2113743M24 100000pF2113928N01 0.1uF2113743N50 100pFNOT PLACED2113743L41 10000pF2113928N01 0.1uF (not used in GP328)2113743M24 100000pF2113743N34 22pF (not used in GP328)2113743N34 22pF (not used in GP328)2113743G26 4.7uF2113743N50 100pF2113743E20 0.1uF2113928N01 0.1uF2113743N50 100pF2113743N50 100pF2113743M08 22000pF

uitef

MotorolaPart No. Description

C448 2113928N01 0.1uFC449 2113743N50 100pFC450 NOT PLACEDC451 2113743M08 22000pFC452 2113743B29 1uFC453 2113743N50 100pFC456 2113743N50 100pFC458 2113743N50 100pFC459 2113743N50 100pFC463 2113743N50 100pFC466 2113743N50 100pFC467 2113928N01 0.1uFC471 2113743N50 100pFC472 2113743L09 470pFC473 2113743L09 470pFC475 2113743H14 10uFC476 2113928D08 10uFC479 2113928N01 0.1uFC480 2113928D08 10uFC481 2113928N01 0.1uFC482 2113928N01 0.1uFC490 2113743N50 100pFC491 2113743N50 100pFC492 2113743N50 100pFC493 2113743N50 100pFC494 2113743N50 100pFC495 2113743N50 100pFC496 2113743N50 100pFC497 2113743N50 100pFC502 2311049A05 0.47uF, 25VC503 2113743N50 100pFC505 2113743N50 100pFC511 2113743N50 100pFC512 2113743N50 100pFC513 2113743N50 100pFC514 2113743N50 100pFC520 2113743L41 10000pFC521 2113743L41 10000pFC522 2113743L41 10000pFC523 2113743L41 10000pFC524 2113743N50 100pFC525 2113743N50 100pFC526 2113743N50 100pFC527 2113743N50 100pFC528 2113743N50 100pFC529 NOT PLACEDCR101 4880973Z02 Pin DiodeCR102 4802245J41 Pin DiodeCR103 4802245J41 Pin DiodeCR105 5185963A15 Temperature SensorCR160 NOT PLACED

CircuitRef

MotorolaPart No. Description

CR201 4802233J09 TripleCR203 4862824C03 VaracCR241 4805649Q13 VaracCR242 4802245J22 VaracCR243 4802245J22 VaracCR251 4862824C01 VaracCR252 4862824C01 VaracCR301 4862824C01 VaracCR302 4862824C01 VaracCR303 4880154K03 Dual C

ode DCR304 4862824C01 VaracCR305 4862824C01 VaracCR306 4802245J42 Ring QCR308 4802245J41 Pin DiCR310 4862824C01 VaracCR411 4802245J62 SchotCR412 4802245J62 SchotCR413 4802245J62 SchotCR440 4813833C02 Dual CCR501 4880107R01 RectifCR503 4805729G49 Red/YE101 2484657R01 InductE400 2480640Z01 FerriteE401 2480640Z01 FerriteE402 2480640Z01 FerriteE403 2480640Z01 FerriteE404 2480640Z01 FerriteE405 2480640Z01 FerriteE406 2480640Z01 FerriteE407 2480640Z01 FerriteE408 2480640Z01 FerriteE409 2480640Z01 FerriteF501 6580542Z01 3A FuFL201 4805875Z04 16.8MFL301 9186153B01 45.1MFL401 4870368G02 Real T

lator (H101 2680499Z01 Heat SJ101 0985613Z01 RF JaJ102 0280519Z02 AntenJ400 0905505Y04 40-pinJ403 0905505Y02 20-pinL101 2479990B02 19.61L102 2479990B02 19.61L104 2479990B02 19.61L105 2462587N22 390nHL106 2479990A02 7.66nL107 2479990G01 33.47L108 0611077A01 ResisL109 2479990B01 11.03n

CircuitRef

MotorolaPart No.

Page 228: Motorola Gp328 338 Service Manual

6D-34 Circuit Board/Schematic Diagrams and Parts List

Q210Q241Q260Q261Q301Q302Q310Q315Q316Q320Q400Q403Q405Q410Q416

Q417Q502Q505R101R102R104R106R107R108R109R110R111R112R120R130R131R132R133R136R161R170R171R172R173R174R175R193R201R202R204R205R206R231R232R233

CircuiRef

used in GP328)t used in GP328)

t used in GP328)

escription

R451 0662057N03 15kR452 0662057N23 100kR453 NOT PLACEDR454 NOT PLACEDR455 NOT PLACEDR456 0662057M01 0R457 0662057M98 10kR460 0662057M90 4700R461 0662057M56 180 (not used in GP328)R462 0662057M98 10k (not used in GP328)R463 0662057M61 300R471 0662057N06 20kR472 0662057N12 36kR473 0662057M26 10R475 0662057M01 0R476 0662057N35 330kR477 0662057M74 1000R478 0662057M98 10kR481 0662057N08 24kR492 0662057M01 0R501 0662057M70 680R502 0662057M56 180R505 0662057M98 10kR506 0662057N15 47kR507 0662057M01 0RT300 0680590Z01 THERMISTOR_33KRT301 NOT PLACEDRT400 0680590Z01 THERMISTOR_33KS501 4080710Z01 Frequency KnobS502 1880619Z02 Volume/on-off SwitchSH100 2680507Z01 Harmonic Filter ShieldSH101 2680510Z01 RF PA ShieldSH201 2680511Z01 Synthesizer Top ShieldSH202 2680511Z01 Synthesizer Bottom ShieldSH241 2680513Z01 VCO Top ShieldSH242 2680514Z01 VCO Bottom ShieldSH301 2680554Z01 Receiver Front End Top

ShieldSH302 2680555Z01 Receiver Front End Bottom

ShieldSH303 2680509Z01 Mixer ShieldSH304 2680624Z01 Mixer Diode ShieldSH321 2680508Z01 LVZIF 2nd LO ShieldSH322 2680514Z01 LVZIF ShieldSH323 2680553Z01 Crystal Filter ShieldSH400 2680505Z01 Controller Memory ShieldSH401 2680506Z01 Controller On-off ShieldSH402 2680515Z01 Microprocessor ShieldSH403 2680516Z01 Asfic_Cmp/Audio PA ShieldT301 2580541Z02 Balun TransformerT302 2580541Z02 Balun Transformer

CircuitRef

MotorolaPart No. Description

http

://w

ww.m

yrad

io16

8.na

me

4809939C05 NPN/PNP Dual Transistor4805218N63 RF NPN Transistor4809939C05 NPN/PNP Dual Transistor4809939C05 NPN/PNP Dual Transistor4802245J44 NPN Transistor4802245J44 NPN TransistorNOT PLACED4880214G02 NPN TransistorNOT PLACED4805218N63 RF NPN Transistor4809579E18 P-chan MOSFET4813824A17 PNP Transistor4802245J54 Dual NPN Transistor4802245J54 Dual NPN Transistor4809579E18 P-chan MOSFET (not used in

GP328)4809939C05 NPN/PNP Dual Transistor5180159R01 Dual NPN Transistor4880214G02 NPN Transistor0662057A34 2400680539Z01 0.10662057N15 47k0662057M26 10NOT PLACED0662057M92 56000662057N30 200k0662057M61 3000662057M33 200662057M61 3000662057N14 43k0662057M98 10k0662057N05 18k0662057N33 270kNOT PLACED0662057N47 1M0662057M57 2000662057A34 2400662057N14 43k0662057A32 2000662057N29 180k0662057N15 47k0662057B47 00662057M57 2000662057N21 82k0662057N23 100k0662057N15 47kNOT PLACEDNOT PLACED0662057M52 1200662057M69 6200662057M68 560

t MotorolaPart No. Description

R241 0662057M33 20R242 0662057M56 180R243 0662057M98 10kR244 0662057N01 12kR245 0662057M59 240R248 0662057M37 30R251 0662057M34 22R252 0662057M57 200R253 0662057N03 15kR254 0662057M92 5600R255 0662057M89 4300R256 0662057M37 30R260 0662057M74 1000R281 NOT PLACEDR300 0662057M82 2200R301 0662057N23 100kR302 0662057N23 100kR303 0662057M74 1000R304 0662057N01 12kR305 0662057M66 470R306 0662057N23 100kR307 0662057N23 100kR308 0662057M60 270R309 0662057M32 18R310 2113743N23 7.5pFR311 0662057N10 30kR312 0662057M83 2400R313 0662057M62 330R314 0662057M85 3000R315 0662057N01 12kR316 0662057A96 91kR317 0662057M74 1000R318 0662057A79 18kR319 0662057A29 150R320 0662057M74 1000R321 0662057M83 2400R322 0662057N30 200kR324 0662057M81 2000R325 0662057M94 6800R326 NOT PLACEDR327 0662057N11 33kR328 0662057M12 2.7R329 0662057M01 0R330 NOT PLACEDR331 NOT PLACEDR332 NOT PLACEDR333 NOT PLACEDR334 NOT PLACEDR335 NOT PLACEDR336 NOT PLACEDR338 NOT PLACED

CircuitRef

MotorolaPart No. Description

R339 0662057M01 0R340 0662057M96 8200R342 0662057N23 100kR343 0662057M26 10R344 0662057N01 12kR345 0662057M98 10kR346 0662057N17 56kR347 0662057M74 1000R348 0662057M87 3600R349 0662057C01 0R350 0662057N23 100kR351 0662057C01 0R352 0662057M86 3300R355 0662057M01 0R400 0662057N15 47kR401 0662057M01 0R402 NOT PLACEDR403 NOT PLACEDR405 0662057M01 0R406 0662057N20 75kR407 0662057N19 68kR408 NOT PLACEDR409 0662057M98 10kR410 0662057N23 100kR411 0662057M98 10kR413 0662057M01 0R414 0662057V34 180k, 1%R415 0662057V26 91k, 1%R416 0662057M98 10kR418 0662057M01 0R419 0662057M67 510 (notR420 0662057B46 10M (noR421 0662057M81 2000R423 0662057N39 470kR424 0662057N12 36kR425 0662057N10 30kR426 0662057N35 330k (noR427 0662057M84 2700R428 0662057M10 2.2R429 0662057M98 10kR431 0662057N39 470kR432 0662057N16 51kR434 0662057M62 330R435 0662057M81 2000R436 0662057M01 0R437 NOT PLACEDR445 0662057N08 24kR447 0662057N23 100kR448 0662057M98 10kR449 0662057N08 24kR450 0683962T45 68, 1W

CircuitRef

MotorolaPart No. D

Page 229: Motorola Gp328 338 Service Manual

Circu 6D-35

U101U102U201U210U211U241U247U248U301U400U404U406U407U409U410

U420VR3VR4VR4VR4VR4VR4VR4VR4VR4VR4VR4VR4VR4VR4VR4VR4VR4VR5VR5Y201

CircR

http

://w

ww.m

yrad

io16

8.na

me

it Board/Schematic Diagrams and Parts List

* Motorola Depot Servicing only

5185130C65 LDMOS Driver IC5185765B26 PCIC5185963A27 LVFRACN Synthesizer IC5102463J61 Inverter5102463J61 Inverter5105750U54 VCO Buffer IC5105739X05 5V Regulator5102463J58 3.3V Regulator5109632D83 LVZIF IC5102463J40 3.3V Regulator5185130C53 Asfic_CMP IC*5102463J59 Flash ROM 128K x 8*5102463J64 EEPROM 16K x 85102226J56 Microprocessor5102463J57 3.3V Regulator (not used in

GP328)5102463J44 Audio Amplifier

00 NOT PLACED32 4805656W08 Quad Zener Diode33 4805656W08 Quad Zener Diode34 4802245J73 Zener Diode - 6.8V39 4880140L17 Zener Diode - 12V40 4802245J73 Zener Diode - 6.8V41 4802245J73 Zener Diode - 6.8V42 4802245J73 Zener Diode - 6.8V43 4802245J73 Zener Diode - 6.8V44 4802245J73 Zener Diode - 6.8V45 4802245J74 Zener Diode - 10V46 4802245J74 Zener Diode - 10V47 4802245J74 Zener Diode - 10V48 4802245J74 Zener Diode - 10V49 4802245J74 Zener Diode - 10V50 4802245J75 Zener Diode - 12V60 4802245J73 Zener Diode - 6.8V01 4813830A18 Zener Diode - 6.8V06 4802245J73 Zener Diode - 6.8V

NOT PLACED8485726Z04 UHF Band 3 Main PCB

uitef

MotorolaPart No. Description

Page 230: Motorola Gp328 338 Service Manual

6D-36 Circuit Board/Schematic Diagrams and Parts List

http

://w

ww.m

yrad

io16

8.na

me

Page 231: Motorola Gp328 338 Service Manual

Troubleshooting charts 6D-37

9.0 Troubleshooting charts

MCU Check

Power UpAlert Tone

OK?

SpeakerOK?

U409 EXTAL=7.3728 MHz?

U201 Pin 1916.8 MHz

5V at U247?3.3V at U248?

U409 Reset Pin94 High?

MCU is OK

Not able to pro-gram RF Board

ICs

Before replacingMCU, check SPIclock, SPI data,

and RF IC select

ReplaceSpeaker

Read RadioOK?

CheckSetup

Reprogram thecorrect data.

See FGUTroubleshooting

7.5V atPin 3/5 U247?4/3.3V at Pin 1

U248

CheckQ400

ReplaceU247/U248

Check any shortto SWB+,

Vdda or Vddd

Press PTT. RedLED does not

light up

PTT U409Pin 53low?

Press PTTQ502-2High?

CheckPB504

CheckQ502-2voltage

LEDQ502,R501

OK?

ReplaceFaulty

Component

CheckAccessories

J403OPT_SEL_1 &OPT_SEL_2

Pin 8 & 9low?

Radio couldnot PTT

externally

U409Pin 52, 6

low?

See FGUTroubleshoot-

ing chart

LED shouldlight up

CheckMCU

PTT

NO

YES

YES

No

No

NO

YES YES

NO

YES

YES

NO

NO

YES

YES

NO

NO

YES

NO

YES

NO

YES

YES

NO

NO

YES

EXTSPKR

EXTPTT

INTAUDIO

J403 Pin 9 low?Pin 8 high?

ASFIC U404Pin 14 & 15

high?

CheckAccessories

CheckU404

CheckU420 Audio PA

NO

NO

YES

YES

J403 Audioat Pin 2 &

Pin 3

Check Spk.Flex Connec-

Audio atAudioPA(U420)input

Audio from Pin 41ASFIC, U404?

CheckASFIC U404

CheckAudio PA(U420)

CheckU301LV ZIF

Audio atPin 2

U404?

NO

NO

NO

YES

YES

NO

YES

Troubleshooting Flow Chart for Controller

Page 232: Motorola Gp328 338 Service Manual

6D-38 Troubleshooting charts

Bad SINADBad 20dB Quieting

No Recovered Audio

START

Audio at pin27 of U301? Check Controller

Yes

No

Spray of inject 1st IF intoXTAL Filter

IF Freq: 45.1MHz

Audio heard?BYes

No

Check 2nd LO ControlVoltage at C363

VCO locked?BYes

16.8 MHzcheck at pin

22 U301?

Activity onU301 sel pin?

Check FGU

No

No

A

A

Yes

Check Q320 biascircuitry for faults.

Rotate Freq. Knob

Check controller.

Before replacing U301, check 2ndVCO Q320. Check VCO O/P level,

C351, C352.

Yes

No

Troubleshooting Flow Chart for Receiver (Sheet 1 of 2)

Page 233: Motorola Gp328 338 Service Manual

Troubleshooting charts 6D-39

IF Signal atL311?

No

RF Signal atT301?

RF Signal atC310?

No

RF Signal atC307?

No

RF Signal atC301?

No or

Check harmonic filters L101 & L102 andant. switches CR101, CR102, L104

Check filter betweenC301 & C307; programfilter to schematic test

freq and check varactorvoltages.

Inject RF into J101

Are varactorvoltages OK?

No

Yes

Check RF amp (Q301)Stage.

Check filter betweenC310 & T301.

Yes

Check T301, T302,CR306, R308, R309,

R310Yes

1st LO O/POK?

Locked?

Yes

Check FGU

Yes

Trace IF signalfrom L311 to

Q302. Check forbad XTAL filter.

No

Yes Q302 collec-tor OK?IF signalpresent?

Before replacingU301, check

U301 voltages;trace IF signal

path.

Yes

Check for 2.6VDC

Is R5present?

Check Q210, U201(pin 48) voltages and

U247

No

No

No

Check U404 voltage.U404 can be selected by

MCU before replacingU404.

Check varactor filter.

No

Yes

Yes

Yes

A

A

B

weak RF

Troubleshooting Flow Chart for Receiver (Sheet 2 of 2)

Page 234: Motorola Gp328 338 Service Manual

6D-40 Troubleshooting charts

START

No Power

Is There B+Bias for Ant

switch

Check Q111

Is CurrentOK?

Is Control Volt-age High or Low

Check PCIC

1. Check Pin Diodes2. Check Harmonic Filter

Inspect/Repair Tx.Output Network

Is PowerOK?

Done

Check Drive toModule

Is DriveOK? Troubleshoot

VCO

Inspect PA Network/Check Power Out ofU101 at Cap C160

Is PowerOK?

Replace U101

Is PowerOK?

Replace Q101

Done

Done

No

Yes

Yes No

No

Yes

Low

High

No

Yes

Yes

No

Yes

No

Troubleshooting Flow Chart for Transmitter

Page 235: Motorola Gp328 338 Service Manual

Troubleshooting charts 6D-41

5Vat pin 6 ofCR201

Is informationfrom µP U409

correct?

Is U201 Pin 18AT 4.54 VDC?

Is U201 Pin 47AT = 13 VDC

Is U241 Pin 19<0.7 VDC in RX &>4.3 VDC in TX?

Start

Visualcheck of theBoard OK?

CorrectProblem

Check 5VRegulator

+5V at U201Pin’s

13 & 30?

Is 16.8MHzSignal at

U201 Pin 19?

Check FL201, C206,C207, C208, CR203 &

R204

Are signalsat Pin’s 14 &15 of U201?

CheckL202 Check Q260,

Q261 & R260

U201 pin 2 at>3V in Tx and<0.7V in Rx

Replace U201

RemoveShorts

Is there a shortbetween Pin 47 and

Pins 14 & 15 ofU201?

Replace orresolder

necessarycomponents

Is RF level atU201 Pin 32>-30 dBm?

Are R231,R232,R233,C231,C232,

& C233 OK?

Replace U201

If L261, C263 & C264are OK, then see VCOtroubleshooting chart

Are Waveformsat Pins 14 & 15

triangular?

Do Pins 7,8 & 9of U201 togglewhen channel is

changed?

Check programminglines between U409

and U201 Pins 7,8 & 9

Replace U201

Check uP U409Troubleshooting

Chart

NO

YES

NO

YES

NO

YES

NO

YES

NO

NO

NO

YES

YES

NO

YES

YES

NO

YES

YES

YES

NO

NO

NO

NO

YES

NO

YES

YES

Check CR201, U210,U211, C258, C259 &

C228

3.3V at U201pins 5, 20, 34 &

36

Check U248,L201 & L202

Is16.8MHzsignal atU201 pin

23?

ReplaceU201

YES

NO

NO

YES

NO

YES

Troubleshooting Flow Chart for Synthesizer

Page 236: Motorola Gp328 338 Service Manual

6D-42 Troubleshooting charts

START

No LO?

Tx Carrier?

VCO OK

CheckR260

TRB = 5V?Pin 10>1V?

L253 O/C? ChangeL253

ChangeU241

AUX 3High?

Check U201Pin 2 for 3.2V

Pin 19=0V

AUX 4High?

ChangeQ261

V ctrl 0Vor 13V?

L243 OpenCircuit?

ChangeU241

ChangeL243

ChangeU201

Check for faulty parts or dryjoints of L271, L273, C370,

C386, R339 & L320

A

A

No

No

Yes

Yes

Yes

No

No

Yes

Yes

Yes

No

Yes

No

No

Yes

Yes

No

No

Check R245 for dryjoint or faulty

No

Troubleshooting Flow Chart for VCO

Page 237: Motorola Gp328 338 Service Manual

6E-1

Section 6E

MODEL CHARTS AND TEST SPECIFICATIONS (29-42/35-50MHZ)

1.0 Model Charts1.1 29-42MHz

GP Series, LB1, 29-42 MHzModel Description

AZH25BEC9AA3 GP328 29-42 MHz 6W 16CH

AZH25BEH9AA6 GP338 29-42 MHz 6W 128CH

Item Description

X PMUB1011 GP328 Super Tanapa 29-42 MHz 6W

X PMUB1013 GP338 Super Tanapa 29-42 MHz 6W

X PMUB1018 GP328 Tanapa 29-42 MHz 6W

X PMUB1020 GP338 Tanapa 29-42 MHz 6W

X PMLB4002 GP328 B/C Kit 29-42 MHz 6W

X PMLB4004 GP338 B/C Kit 29-42 MHz 6W

X PMLN4216 GP328 Front Housing Kit

X PMLN4199 GP338 Front Housing Kit

X X NAB6064A Low/Mid Band Heliflex Antenna Trimmable

X 6804110J54 GP328 User Guide

X 6804110J55 GP338 User Guide

x = Indicates one of each is required.

Page 238: Motorola Gp328 338 Service Manual

6E-2 Model Charts

1.2 35-50MHz

GP Series, LB2, 35-50 MHzModel Description

AZH25CEC9AA3 GP328 35-50 MHz 6W 16CH

AZH25CEH9AA6 GP338 35-50 MHz 6W 128CH

Item Description

X PMUB1026 GP328 Super Tanapa 35-50 MHz 6W

X PMUB1023 GP338 Super Tanapa 35-50 MHz 6W

X PMUB1033 GP328 Tanapa 35-50 MHz 6W

X PMUB1030 GP338 Tanapa 35-50 MHz 6W

X PMLB4010 GP328 B/C Kit 35-50 MHz 6W

X PMLB4007 GP338 B/C Kit 35-50 MHz 6W

X PMLN4216 GP328 Front Housing Kit

X PMLN4199 GP338 Front Housing Kit

X X NAB6064A Low/Mid Band Heliflex Antenna Trimmable

X 6804110J54 GP328 User Guide

X 6804110J55 GP338 User Guide

x = Indicates one of each is required.

GP Series, LB2, 35-50 MHzModel Description

AZH25CEC9AA3 withoption AZQ203AL

GP328 35-50 MHz 6W (w/o keypad camouflage)

AZH25CEH9AA6 withoption AZQ203AM

GP338 35-50 MHz 6W (keypad, camouflage)

Item Description

X PMUB1051_ GP328 Super Tanapa 35-50 MHz 6W

X PMUB1049_ GP338 Super Tanapa 35-50 MHz 6W

X PMUB1052_ GP328 Tanapa 35-50 MHz 6W

X PMUB1050 GP338 Tanapa 35-50 MHz 6W

X PMLB4010_ GP328 B/C Kit 35-50 MHz 6W

X PMLB4007_ GP338 B/C Kit 35-50 MHz 6W

X PMLN4539_ GP328 Front Housing Kit

X PMLN4538_ GP338 Front Housing Kit

X X NAB6064_ Low/Mid Band Heliflex Antenna Trimmable

X 6804110J54 GP328 User Guide

X 6804110J55 GP338 User Guide

x = Indicates one of each is required.

Page 239: Motorola Gp328 338 Service Manual

Specifications 6E-3

2.0 SpecificationsGeneral

Transmitter

Receiver

All specifications are subject to change without notice.

Lowband

Frequency: 29-42 MHz35-50 MHz

Channel Capacity: GP328 : 16 ChannelsGP338 : 128 Channels

Power Supply: 7.5 Volts ±20%

Dimensionswith Standard

High CapacityNiMH Battery:

with Ultra HighCapacity NiMH Bat-tery:

137mm x 57.5mm x37.5mm

137mm x 57.5mm x40mm

Weight:with Standard

High CapacityNiMH Battery:

with Ultra HighCapacity NiMH Bat-tery:

420 g

500 g

Average BatteryLife @ (5-5-90 DutyCycle)

Standard HighCapacity NiMH Bat-tery:

Ultra High Capac-ity NiMH Battery:

Low Pow-er

>11 hrs

>14 hrs

High Pow-er

>8 hrs

>11 hrs

Sealing: Passes rain testing perIP54

Shock: Meets MIL-STD-810-C,D & E and TIA/EIA 603

Vibration: Meets MIL-STD-810-C,D & E and TIA/EIA 603

Dust: Meets MIL-STD-810-C,D & E and IP54

Humidity: Meets MIL-STD-810-C,D & E and TIA/EIA 603

FCC ID AZ489FT1625

Lowband

RF OutputNiMH @ 7.5V:

Low1W

High6W

Frequency 29-42 MHz35-50 MHz

Channel Spacing 12.5/20/25 kHz

Freq. Stability(-30°C to +60°C)

0.0010%

Spurs/Harmonics: -36 dBm < 1 GHz-30 dBm > 1 GHz

Audio Response:(from 6 dB/oct. Pre-Emphasis, 300 to3000Hz)

+1, -3 dB

Audio Distortion:@ 1000 Hz, 60%Rated Max. Dev.

<5%

FM Noise: -40 dB

Lowband12.5kHz

Lowband20/25kHz

Frequency: 29-42MHz35-50MHz

29-42MHz35-50MHz

Sensitivity12dB EIA SINAD:

0.35 µV 0.35 µV

Adjacent ChannelSelectivity ETS

-60 dB -70 dB

IntermodulationETS

-65 dB -65 dB

Freq. Stability(-30°C to +60°C):

0.0010% 0.0010%

Spur Rejection: -70 dB -70 dB

Image Rejection: -70 dB -70 dB

Audio Output@ <5% Distortion

500 mW 500 mW

Page 240: Motorola Gp328 338 Service Manual

6E-4 Transmitter

3.0 Transmitter

3.1 General(Refer to Figure 6-1)

The Lowband transmitter consists of the following basic circuits:

1. power amplifier (PA)

2. antenna switch

3. harmonic filter

4. antenna matching network

5. power control integrated circuit (PCIC).

3.1.1 Power Amplifier

The power amplifier consists of two LDMOS devices:

1. PA driver, U101 and

2. PA final stage, Q100.

The LDMOS driver (U101) provides 2-stage amplification using a supply voltage of 7.3V. Theamplifier is capable of supplying an output power of 0.3W (pins 6 and 7) with an input signal of 2mWat (pin16). The current drain is typically 120mA while operating in the frequency range of 29.7 - 50MHz. The power output of this stage is varied by the power control loop which controls the voltage onpin 1.

The LDMOS PA is capable of supplying an output power of 8W with an input signal of 0.3W. Thecurrent drain is typically 2000 mA while operating in the frequency range of 29.7 - 50 MHz. The finalstage gate is bias by a voltage from PCIC pin 24. This voltage is the output of a programmable DACinside the PCIC and the output is adjustable with the radio tuner.

Figure 6-1: Lowband Transmitter Block Diagram

PCIC

P A PA F i n a l Antenna Switch/Driver Sta ge Harmonic Filter

Vcontrol Gate bias

From

AntennaMatchingNetwork

PowerAmplifier (PA)

VCO

Antenna switch biasSPI bus

Page 241: Motorola Gp328 338 Service Manual

Transmitter 6E-5

3.1.2 Antenna Switch

The antenna switch circuit consists of two pin diodes (D100 and D101), a RF network (C147 andL103), and a DC feed network (L104, C144 and current limiting resistor R101). In the transmit mode,PCIC (U102) pin 32 goes high supplying current via the feed network to bias the diodes “on”. Theshunt diode (D101) shorts out the receiver port and L103 is connected from the RF path to ground.L103 and the input capacitance of the lowpass filter form a parallel resonant circuit, effectivelydisconnecting the receiver port from the antenna while not loading the transmit path. In the receivemode, pin 32 goes low and the.the diodes are off. D100 looks like a high impedance disconnectingthe transmitter from the antenna while L103 and C147 form a series resonant circuit to connect thereceiver to the antenna.

3.1.3 Harmonic Filter

The harmonic filter consists of components C103, C106, C107,C110, C111, C114, C115 and 3inductors which are a part of the SH100 assembly. The harmonic filter for lowband is pole zero designwhich give greater attenuation lower in frequency where the harmonic energy of the transmitter is thegreatest and less attenuation high in frequency where there is less harmonic energy. The harmonicfilter insertion loss is typically less than 0.8 dB

3.1.4 Antenna Matching Network

The antenna matching network (T100) matches the antenna's impedance with the harmonic filter tooptimize the performance of the transmitter and receiver.

3.1.5 Power Control Integrated Circuit (PCIC)

The transmitter uses the PCIC (U102) to regulate the power output of the radio. To accomplish this,the voltage across R102 is sensed. This voltage drop is directly proportional to the current drawn inthe final stage of the transmitter. This voltage is compared to a programmable reference inside thePCIC and the voltage on PCIC pin 4 adjusted. Pin 4 connects to the PA driver IC (U101) pin 1 viaresistor R100 and varies RF output power of the driver. This controls the current drain of the finalstage and sets the output power.

3.1.6 Temperature Cut Back Circuit

Temperature sensor VR101 and associated components are part of a temperature cut back circuit.This circuit senses the printed circuit board temperature around the transmitter circuits and outputs aDC voltage to the PCIC. If the DC voltage produced exceeds the set threshold of the PCIC, thetransmitter output power decreases to reduce the transmitter temperature.

Page 242: Motorola Gp328 338 Service Manual

6E-6 Receiver

4.0 Receiver

4.1 Receiver Front-EndThe RF signal received by the antenna is routed through the transmitter lowpass filter and antennaswitch. These circuits are described in the transmitter section.The signal next passes through ahighpass filter consisting of L501, L502, C538, C533 and C504. This filter serves to reject below bandsignals and has a 3 dB corner frequency of 27 MHz.

The output of the highpass filter is connected to an RF amp consisting of Q509 and associatedbiasing components. This is a BJT amplifier powered off 5 volts and has 13 dB of gain. The amplifierdrives a lowpass filter consisting of L503, L504 L507, C534, C535, C536, C537 and C515. This filteris a pole zero design that filters off harmonic components from the RF amp. The 3 dB corner of thisfilter is at 56 MHz.

The output of the lowpass filter is connected to the passive double balanced mixer consisting ofcomponents T501, T502, and D501. After mixing with the first local oscillator up-converted to a109.65 MHz IF signal.

The IF signal coming out of the mixer is transferred to the crystal filter (FL301) through a resistor pad(R507, R508 and R509) and a diplexer (C516 and L508). Matching to the input of the crystal filter isprovided by L301, L302, C301 and C302. The 3 pole crystal filter provides the necessary selectivityand intermodulation protection.

Figure 6-2: Lowband Receiver Block Diagram

Demodulator

Synthesizer

CrystalFilter

MixerLowpassFilterRF AmpHighpass

FilterAntennaSwitch

RF

Antenna

First LOfrom FGU

Recovered AudioSquelch

RSSI

SPI Bus

17.0 MHzReference Clock

SecondLO VCO

JackLowpassFilter IF Amp

AGCProcessing

IF ICU303

Page 243: Motorola Gp328 338 Service Manual

Receiver 6E-7

4.2 Receiver Back-EndThe output of crystal filter FL301 is connected to the input of IF amplifier transistor U301. ComponentsL303 and C348 and R301 form the termination for the crystal filter and the signal is coupled to onegate of U301 by C303. The IF amplifier is a dual gate MOSFET powered off of the 5 volt supply. Thefirst gate receives the IF signal as indicated previously. The second gate receives a DC voltage fromU302 which serves as an AGC control signal. This signal reduces the gain of the IF amplifier toprevent overload of the IF IC, U303. The gain can be varied from a maximum of 13 dB to anattenuation of 55 dB. The output IF signal from U301 is coupled into U303 (pin 3) via C306, R304 andL304 which provides matching for the IF amplifier and U303.

The IF signal applied to pin 3 of U303 is amplified, down-converted, filtered, and demodulated, toproduce recovered audio at pin 27 of U303. This IF IC is electronically programmable, and theamount of filtering, which is dependent on the radio channel spacing, is controlled by themicroprocessor. Additional filtering, once externally provided by the conventional ceramic filters, isreplaced by internal filters in IF IC U303.

The IF IC uses a type of direct conversion process, whereby the externally generated second LOfrequency is divided by two in U303 so that it is very close to the first IF frequency. The IF IC (U303)synthesizes the second LO and phase-locks the VCO to track the first IF frequency. The second LO isdesigned to oscillate at twice the first IF frequency because of the divide-by-two function in the IF IC.

In the absence of an IF signal, the VCO searches for a frequency, or its frequency will vary close totwice the IF frequency. When an IF signal is received, the VCO locks onto the IF signal. The secondLO/VCO is a Colpitts oscillator built around transistor Q301. The VCO has a varactor diode, CR301,to adjust the VCO frequency. The control signal for the varactor is derived from a loop filter consistingof components C308, C309, and R310.

The IF IC (U303) also performs several other functions. It provides a received signal-strengthindicator (RSSI) and a squelch output. The RSSI voltage is also used to control the automatic gaincontrol (AGC) circuit at the back end.

The demodulated signal on pin 27 of U303 is also used for squelch control. The signal is routed toU404 (ASFIC) where squelch signal shaping and detection takes place. The demodulated audiosignal is also routed to U404 for processing before going to the audio amplifier for amplification.

4.3 Automatic Gain Control CircuitThe automatic gain control circuit provides automatic reduction of gain to prevent overloading ofbackend circuits. This is achieved by lowering the voltage on one gate of U301 which will reduce thedrain current in that part and lower its gain.

The Radio Signal Strength Indicator (RSS I) voltage signal for the IF IC (U303) is used to drive theAGC processing circuitry consisting of R306, R307, R308, R309 C307 and U302. As the receivedsignal gets stronger, the RSSI line will rise. When the RSSI line passes a certain threshold, thevoltage at the output of U302 will begin to drop. This voltage is connected to one gate of IF amplifierU301 through resistor R305. As this voltage decreases, it will lower the drain current in U301 andreduce the gain of the stage. This will limit the power incident on the IF IC, U303.

Page 244: Motorola Gp328 338 Service Manual

6E-8 Frequency Generation Circuitry

5.0 Frequency Generation Circuitry

The frequency generation circuit, shown in Figure 6-3 , is composed of Low Voltage Fractional-Nsynthesizer U205 and discrete RX VCO, TX VCO.and buffers as well other supporting circuitry. Thesynthesizer block diagram illustrates the interconnect and support circuitry used in the region. Referto the schematic for the reference designators.

The synthesizer is powered by regulated 5V and 3.3V. The 5 volt signal to the synthesizer as well asthe rest of the radio is provided by U204. The 3.3 v signal is provided from U400 in the controller. The5V signal goes to pins 13 and 30 while the 3.3V signal goes to pins 5, 20, 34 and 36 of U201. Thesynthesizer in turn generates a superfiltered 4.3V which powers the VCOs and buffers.

In addition to the VCO, the synthesizer also interfaces with the logic and ASFIC circuitry.Programming for the synthesizer is accomplished through the data, clock and chip select lines (pins7, 8 and 9) from the microprocessor, U409. A 3.3V dc signal from pin 4 indicates to themicroprocessor that the synthesizer is locked.

Transmit modulation from the ASFIC is supplied to pin10 of U205. Internally the audio is digitized bythe Fractional-N and applied to the loop divider to provide the low-port modulation. The audio runsthrough an internal attenuator for modulation balancing purposes before going out at pin 41 to theVCO.

Figure 6-3: Lowband Frequency Generation Unit Block Diagram

VoltageMultiplier

SynthesizerU205 Loop

Filter

ToMixer

To PADriver

VCP

Aux2

Aux3

MOD Out

ModulatingSignal

Indmult

17.0 MHzRef. Osc.

SwitchingNetwork

VSF

Prescalar input

TX VCO

RX VCO

Buffer

Page 245: Motorola Gp328 338 Service Manual

Frequency Generation Circuitry 6E-9

5.1 SynthesizerThe Fractional-N synthesizer, shown in Figure 6-4, uses a 17.0 MHz crystal (Y201) to provide areference for the system. Along with being used in the LVFracN, the 17.0 MHz signal is provided atpin 19 of U205 for use by the ASFIC and LVZIF.

The LVFractN IC (U205) further divides this by 8 internally to give 2.125 MHz to be used as thereference frequency in the frequency synthesis. While UHF and VHF can use other references,(divide by 7 or divide by 7/8), only the divide by 8 function is valid for lowband.

The internal oscillator device in the LVFracN together with C236, C237, C242, R219, CR211and Y201comprise the reference oscillator. This oscillator is temperature compensated is capable of 2.5 ppmstability over temperatures of -30 to 85°C. There is temperature compensation information that isunique to each crystal contained on Y201 that is programmed into the radio when built.

The loop filter consists of components C256, C257, C259, R224, R225 and R228. This circuitprovides the necessary dc steering voltage for the VCO and determines the amount of noise and spurpassing through.

To achieve fast locking for the synthesizer, an internal adapt charge pump provides higher current atpin 45 of U205 to put the synthesizer within lock range. The required frequency is then locked bynormal mode charge pump at pin 43.

Both the normal and adapt charge pumps get their supply from the inductive voltage multiplier madeup of C240, C246, C247, C249, D201, and L223. This circuit provides 13.3V at pin 47 of U205.

Figure 6-4: Lowband Synthesizer Block Diagram

DATA

CLK

CEX

MODIN

VCC, DC5V

XTAL1

XTAL2

WARP

PREIN

VCP

REFERENCEOSCILLATOR

VOLTAGEMULTIPLIER

VOLTAGECONTROLLEDOSCILLATORS

2-POLELOOPFILTER

DATA (U409 PIN 100)

CLOCK (U409 PIN 1)

CSX (U409 PIN 2)

MOD IN (U404 PIN 40)

+5V (U204 PIN 4)

7

8

9

10

13, 30

23

24

25

32

47

INDMULT

BIAS1

SFOUT

AUX3

AUX2

IADAPTIOUT

GND

FREFOUT

LOCK 4

19

6, 17, 22, 29, 31, 33, 44

4345

1

2

28

16

40

FILTERED 4.3V

STEERINGLINE

LOCK (U409 PIN 56)

PRESCALER IN

LO RF INJECTION

TX RF INJECTION(FIRST STAGE OF PA)

FREF (U303 PIN 21 & U404 PIN 34)

39BIAS2

41

SWITCHINGNETWORK

5, 20, 34, 36(U400 PIN 1) VDD, 3.3V MODOUT

U205LOW VOLTAGEFRACTIONAL-NSYNTHESIZER

Page 246: Motorola Gp328 338 Service Manual

6E-10 Frequency Generation Circuitry

5.2 VCO - Voltage Controlled Oscillator

5.2.1 Receive VCO

The receive VCO is a Colpitts type design and using two active devices in parallel, Q202 and Q204.The oscillator is powered off of the 4.3 volt super filter supply when the AUX3 line goes low. Theoscillator operates from 139 to 160 MHz, and the frequency is tuned by varactor diodes CR201 andCR202.

5.2.2 Transmit VCO

The transmit VCO is a Hartley type design with active devices Q203. The oscillator is powered off ofthe 4.3 volt super filter supply when the AUX2 line goes low. The oscillator operates from 29.7 to 42MHz for Range 1 and 35 to 50 MHz for Range 2. The frequency is tuned by varactor diodes in U203.Note that the values of the inductive tap, L208 and L209, and the capacitor C215 which couples thevaractor to the oscillator tank vary between the ranges.

5.2.3 Buffer

Both the receive and transmit VCO are fed to a buffer amplifier Q201. This is a BJT amplifier thatboosts the signal levels to +4 dBm and provides reverse isolation to the oscillators. The amplifier ispowered off the 4.3 volt super filter supply and the feed network is combined with the transmit filter.

5.2.4 Diplexer and Output Filters

The output of the buffer drives a pair of parallel filters. One filter is a lowpass filter in the TX pass thatpasses 29.7 - 50 MHz signals for the transmitter into the power amplifier while rejecting the receiveLO injection signals at 139 - 160 MHz. This filter is comprised of L204, L211, L212, C230 and C231.

The other filter is a highpass filter which passes 139 - 160 MHz signals for the receive LO into themixer while rejecting the transmit injection signals at 29.7 -50 MHz. This filter is comprised ofC228,C229,C235 and L215.

5.2.5 Prescalar Feedback

The prescalar input signal for receive and transmit is tapped off of the outputs of each filter byresistors R234 and R238. This signal is routed to U205 pin 32. After frequency comparison in thesynthesizer, current is transferred in the loop filter and a control voltage is generated at the output ofthe loop filter to adjust the frequency of the VCO. This voltage is a DC voltage between 3.5V and 9.5Vwhen the PLL is locked on frequency.

Page 247: Motorola Gp328 338 Service Manual

Notes For All Schematics and Circuit Boards 6E-11

6.0 Notes For All Schematics and Circuit Boards* Component is frequency sensitive. Refer to the Electrical Parts List for value and usage.

1. Unless otherwise stated, resistances are in Ohms (k = 1000), and capacitances are in picofarads(pF) or microfarads (µF).

2. DC voltages are measured from point indicated to chassis ground using a Motorola DC multime-ter or equivalent. Transmitter measurements should be made with a 1.2 µH choke in series withthe voltage probe to prevent circuit loading.

3. Reference Designators are assigned in the following manner:

100 Series = Transmitter

200 Series = Frequency Generation

300 Series = Receiver

400/500 Series = Controller

600 Series = Keypad Board

4. Interconnect Tie Point Legend:

UNSWB+ = Unswitch Battery Voltage (7.5V)

SWB+ = Switch Battery Voltage (7.5V)

R5 = Receiver Five Volts

CLK = Clock

Vdda = Regulated 3.3 Volts (for analog)

Vddd = Regulated 3.3 Volts (for digital)

CSX = Chip Select Line (not for LVZIF)

SYN = Synthesizer

DACRX = Digital to Analog Voltage (For Receiver Front End Filter)

VSF = Voltage Super Filtered (5 volts)

VR = Voltage Regulator

6-LAYER CIRCUIT BOARD DETAIL VIEWINGCOPPER STEPS IN PROPER LAYER SEQUENCE

LAYER 1 (L1)

LAYER 2 (L2)LAYER 3 (L3)LAYER 4 (L4)

LAYER 5 (L5)LAYER 6 (L6)

INNER LAYERS

SIDE 1

SIDE 2

Page 248: Motorola Gp328 338 Service Manual

6E-12 Notes For All Schematics and Circuit Boards

Page 249: Motorola Gp328 338 Service Manual

Circu 6E-13

7.0

C103

C10

6

C10

7

C110C111

C11

4C

115

C11

8C

119 C144

C145

C147

C14

9

C30

4C

306

C308

C309

C31

1

C312

C31

3

C314

C31

5

C316

C31

7

C50

0

C50

2

C50

5

C51

1

C512 C513

C51

4

C515

C52

2

C53

4

C53

5

C53

6

C537

CR

301

CR502

43

2CR503

D100

D101

L100

L101L102

L103

L104

L306

L308

L503

L504

L507

PB501

PB

505

Q30

1

Q51

0

R310

R314

R31

5

R31

6

R317

R501

R50

2

R51

4

R51

5

SH100

SH301

SH501

21

5 4

3

T100

4

VR102

VR500

VR501

VR502

FL0830474O

owband 29-42/35-50MHz Main Board Top Side PCB No. 8486291A02

http

://w

ww.m

yrad

io16

8.na

me

it Board/Schematic Diagrams and Parts List

Circuit Board/Schematic Diagrams and Parts List

B503 B504

C120

C121

C12

2C

123

C130

C13

6

C148

C201C202

C203

C206

C218

C21

9

C220

C223

C224

C22

8

C229

C23

2

C23

3

C23

4

C23

5

C23

7

C247C249

C260

C26

3

C283

C284

C28

5

C28

6

C28

7

C30

1

C30

2

C303

C305

C310

C34

8

C400

C40

1

C402

C403

C40

4

C40

6

C42

3

C424

C425C426

C427C428

C429

C43

2

C43

8

C44

0

C441

C443C444

C467

C471

C472

C473 C48

0

C48

2

C490

C491

C492

C493

C494

C495

C496

C497

C516

CR201 CR

202

CR

211

CR412

CR

413

CR

440

D210

D21

1

D501

E407

E40

8

E409

5

6

43

2

1

FL301

1

40

J400

22

20

1

21

J403

L105

L106

L107

L110

L201

L202

L203

L210

L226

L301

L302

L303

L304

L400

L401

L508

PB502PB503PB504

1

2

3

Q100

Q20

1

Q20

2

Q204

Q28

8

Q40

0

Q403

43 Q405

43Q411

4 3

Q41

7

R10

4

R105

R106R11

2

R20

3

R227

R229

R230

R23

3

R235

R23

7

R285

R286

R287

R28

8R28

9

R30

1

R30

2

R303

R304

R305

R312

R401

R40

2

R40

3

R405R406

R407

R408

R410

R41

6R

418

R42

1

R427

R428

R42

9

R435

R436

R437

R44

6R

447

R44

8

R450

R476

R477

R478

R481

R49

2

R499

R507

R50

8

R50

9

R510

RT400

SH200

SH203

SH302

SH303

SH400

SH401

SH502

63

T5016

4

3

T502

TP201

TP401

TP402

TP405TP406

TP410

TP415

TP500

TR201

116

89

U101

U204

U301

4

5 8

U400

22

218

7 1

U405

32 17

161

U406

VIEWED FROM SIDE 1

1

45

8

U407

VR

434

VR

447

VR449

VR450

6 4

31

Y201

L

Page 250: Motorola Gp328 338 Service Manual

6E-14 Circuit Board/Schematic Diagrams and Parts List

C21

4

C21

5

1

C23

6

C242

C280

C281

C29

8

C29

9

C405

C40

7

C408

C40

9

C410

C41

1

C412 C41

4

C41

5

C416

C41

9

C42

0

C42

1

C42

2

C430

C431

C43

3

C434

C43

5

C436C437

C442

C445

C44

7C

448

C44

9

C450

C45

1

C45

2C

453

C45

6

C458

C459

C46

3

C466

C475

C476

C479

C481

CR203

CR

411

E400

E40

1

E402

E40

3

E404

E405

E406

3

FL401

L207

L225

L410

L411

M400

M401

43

Q410

Q41

6

R219

R400

R409

R41

1

R41

3

R41

4

R415

R419

R42

0

R42

3R

424

R42

5R

426

R431

R43

2

R434

R44

5

R44

9

R457

R460

R46

1

R462

R46

3

R471

R472

R47

3

R475

SH402

SH403

U200

5

81

4

U203

1312

2425

3736

481

U404

176

5126

U409

U41

0

11

1

20

10

U420

VR

432

VR

433

VR445

VR446

VR448

FL0830475O

Lowba

http

://w

ww.m

yrad

io16

8.na

me

C108

C11

7

C124

C125

C12

6

C127

C128

C12

9

C13

1

C13

2

C133C13

4

C13

5

C13

7C138

C13

9

C14

0

C141

C14

2

C14

3

C146

C20

4

C20

5

C216

C22

1C

222

C22

5C

226

C22

7

C23

0

C23

C255C25

6

C25

7

C25

8

C259 C261

C29

7

C307

C319

C32

0

C32

1

C323

C324

C32

5

C326

C327

C328

C330

C331C332

C333 C33

4

C335

C336

C337

C33

9

C34

0

C34

1

C34

2

C343

C503

C504

C50

6

C507

C533

C53

8

CR200

CR204

D502

E100

F1

3

2

1

J1

1

2

3

4

J101

4

J102

L108

L109

L200

L204

L208

L209

L211

L212

L215

L305

L307

L501

L502

M100

M101 M202

M300 M301

Q203

Q509

R101

R10

2

R10

3

R10

7R10

8

R109

R110

R111

R113R114

R11

5

R11

6

R11

7

R118

R11

9

R20

4

R206

R222

R223

R22

4

R22

5

R22

8

R23

1

R23

2

R23

4

R23

6

R23

8R

239

R306

R30

7

R308

R309

R318

R503R50

4R505

R51

2

R51

3

2

C

8

C

4

S501

4

53

2S502

VIEWED FROM SIDE 2

SH201

SH202

SH300

SH500

TP100

TP200

1

179

25

U102

1312

2425

3736

481

U205

U20

7

U30

2

1312

2425

3736

481

U303

VR

101

VR200 VR201

VR

202

VR203

nd 29-42/35-50MHz Main Board Bottom Side PCB No. 8486291A02

Page 251: Motorola Gp328 338 Service Manual

Circu 6E-15

IF261

IF210

IF209

10.0VVR203

C503

100pF

IF215

VR2026.8V

L200

390nH

IF265

1

2

CR200

IF259

IF279

IF211

F1

21

IF260

3A24V

UNSWB+_2

2

S

S

SWB+_1

BATT_CODE_1 BATT_CODE_2

MER_1 EMER_3

SET_1 RESET_3

BATT_B+_2

FL0830467O

wband 29-42/35-50MHz Controls And Switches Schematic Diagram

http

://w

ww.m

yrad

io16

8.na

me

it Board/Schematic Diagrams and Parts List

C204.01uF

IF264

IF271

IF212IF273

.01uFC205

IF223

IF227

IF280

IF222B503

M202

IF270IF220

IF2662

IF263

SWITCHPB503

1

IF275

IF213

VR2016.8V

IF216

IF272

IF228

PB502SWITCH

12

IF224

IF276IF226

IF267

IF221

B504

IF217

IF274

IF225

IF214

IF230

6.8VVR200

IF277

MECH_SW_B+_

LI_ION

B3

B2

UN

IF278

DEMOD_1 DEMOD_2

E

RSSI_1 RSSI_2

R

VOL_1 VOL_2

RED_LED_1

GREEN_LED_1

RED_LED_2

GREEN_LED_2

PTT_1 PTT_2

LVZIF_SEL_1 LVZIF_SEL_2

SB1_1 SB1_2

MECH_SW_B+_1

RTA0_1

RTA1_1

RTA0_2

RTA1_2

RTA2_1

RTA3_1

RTA2_2

RTA3_2

Lo

E

Page 252: Motorola Gp328 338 Service Manual

6E-16 Circuit Board/Schematic Diagrams and Parts List

Software Package S501 - Freq. switch

4080710Z01 - 16 positionConventional/MDC

4080710Z02 - continous5 Tone

IF312

M300

PB501SWITCH

1 2

C513

100pF

M301

6.8VVR500

R514

47K

6.8V

IF321

VR501

.01uFC500

IF320

IF308

C0C1C1

7GND GND1

9

1PC0

2PC1

4PC2PC3

8

S501SWITCH

C0

180R502

IF306

C512

100pF

IF314

IF315

DATA2

NEG1

POS3

IF304

J1

10KR515

VR5026.8V

IF325

R5

RX_IN

RX_INJ

IF300

IF301

IF317

RX FRONT ENDIF

IF307

IF302

1 3

0.47uFC502

CR503

2 4

IF319

Q510

IF318

C514

100pF

C511

100pF

IF316

IF311

IMX1CR502-1

51

6

CE

CLK

DATA

DEMOD

IF

R5

RSSI

Vdd

IF303

PB504SWITCH

1 2

RX BACK END

16.8MHz

24

3

1

5

3

TAB16

TAB27

2

CR502-2

S5024

LOW

IF322

IF323

IF305

C505100pF

IF309R501680

IF310

DEMOD

R5

UNSWB+_2

GREEN_LED

SWB+

RED_LED

BATT_B+_4

BATT_B+_2

BATT_CODE

SB1

PTT

VDD

IF324

RX_IN

RX_INJ

RTA0

RTA3

RTA1

RTA2

VOL

MECH_SWB+

16.8MHz

DATA

CLK

LVZIF_SEL

RSSI

FL0830470O

Lowband 29-42/35-50MHz Overall Receiver Schematic Diagram

http

://w

ww.m

yrad

io16

8.na

me

Page 253: Motorola Gp328 338 Service Manual

Circu 6E-17

3.25 Vdc

-24.5 dBm

-26.5 dBm

-18.75 dBm

REAMP

3.6K

TP500

R510

XFMRT502

46

31 2

C516

D501

2

34

1

30pFR505560

68nH

L508

HIELDH500

3

1

2

R507270

T501

4

6XFMR

.01uF

C522

R509270

R508

18

0.1uFC507

RX_

RX_INJ

IF

TER.

FL0830471O

Lowband 29-42/35-50MHz Receiver Front End Schematic Diagram

http

://w

ww.m

yrad

io16

8.na

me

it Board/Schematic Diagrams and Parts List

0.78 Vdc

-24.5 dBm

3.24 Vdc

33 mV

PLP FILTER MIXER

56pFC515C536

27pF

Q509HP415

150nHL501

39pF

C533

82pFC538

2pF

C535

L504

560nH

K2

R504

12K

D502

R5031K

C506

100pF

L507

150nH

R5124.7K

SS

SHIELDSH501

270nHL502

SHIELDSH502

1uH

3.9pF

C537

L503

C534

10

8.2pF

R513

IN

C504

51pF

R5

RECEIVE -47dBm SIGNAL AT 35.04MHz WITH 1K TONE.RF MEASUREMENTS MADE WITH BOONTON 92 MILLIVOLTME

Page 254: Motorola Gp328 338 Service Manual

6E-18 Circuit Board/Schematic Diagrams and Parts List

1KHz 0.86v p-p

RECEIVE -47dBm SIGNAL AT 35.04MHz WITH 1K TONE.RF MEASUREMENTS MADE WITH BOONTON 92 MILLIVOLTMETER.

5 Vdc5 Vdc

5 Vdc5 Vdc

IF AMP IF FILTERSECOND LO LVZIF

SH301SHIELD

1uFC341

SH302SHIELD

C336

10uF

C337

.022uF

1uFC340

SH303SHIELD

SH300SHIELD

C3421uF

0.1uFC332

1uFC339

DEMOD

FL0830472O

Lowba

http

://w

ww.m

yrad

io16

8.na

me

17 MHz on Low Band

17 MHz 0.6v p-p

0.5 - 2.7 vdc

1.8 vdc

2.5 Vdc

3 Vdc

219.3 MHz

-29.5 dBm

- 36 dBm

1.

5 VdcRXFor <-50 dBm RF

= 3 Vdc~

3 Vdc

1.

1.1.

1.5 Vdc

Sawtooth Voltage

AGC PROCESSING

109.65MHz CRYSTAL FILTER

IF AMPLIFIER

SECOND LO

SECOND LO LOOP FILTER

C301 0.22uF

C335

C304

15pF

4700pF

R3103.6K

13pFC311

C323

.022uF

20

1500pFC334

R318

C308

1uF

C324100pF

4OUT

10uFC319

31B01FL301

2G

ND

1G

ND

23 5

GN

D3

6G

ND

4

1 IN

1.5KR304

R31547K

0.5pFC302

R305

L304390nH

10K

2K

0.1uFC333

R317

47KR303

47KR302

C3260.1uF

91KR309

2.2uHL307

C31710uF

C309

.01uF

220nHL303

C331.022uF

15pFC316

390nHL305

2

NC 1

4

VC

C

5

13pFC313

U302TC7SU04F

GN

D

3

4700pF

C305

C3068pF

0.1uFC310

1.5K

U301

R312

2.2uH

C343

L308

0.22uF

0.1uFC3075.6K

R307

1.5KR301

1.3K

R306

C31213pF

C3280.1uFC330

.022uF

VAG32

VAG_REF 25

VPP9

13pFC314

RED_VCC1

RED_VSS2

ROSE_VCC30

ROSE_VSS29

RSSI_FLT5RSSI_OUT4

TE

STA

16

TESTD8

LIM 31

MIX

_BY

P42

MIX

_IN

46

MLP

D_C

R24

PHASE_LOCK 26

PR

EA

MP

_OU

T47

PR

E_A

GC

48

PRE_IN3

EXTBS6

FR

EF

21G

ND

20

GOLD_VCC10

GO

LD_V

SS

14

GR

EE

N_V

CC

41

GR

EE

N_V

SS

43

IOU

T15

C4P

37

CE

X19

CLK

18

CO

L13

DAT

A17

DEMOD_HF28

DEMOD_OUT 27

EMIT11

BR

P_O

FF

23

C1M 33

C1P

40

C2M34

C2P

39

C3M35

C3P

38

C4M36

U30332D83

AFC7

BASE12

BLU

E_V

CC

45

BLU

E_V

SS

44

BR

OW

N_V

CC

22

.022uFC321

1

3

2

0.22uFC325

R316

BFQ67WQ301

33nHL306

200

0.22uFC320

C327

4700pF

R308

12K

C3159.1pF

10KR314

CR301

470nH

L302

120nH

L301

C348

2pF

R5

4700pF

C303

CECLK

DATA

IF

RSSI

Vdd

16.8MHz

nd 29-42/35-50MHz Receiver Back End Schematic Diagram

Page 255: Motorola Gp328 338 Service Manual

Circu 6E-19

ZMY0130813-O

1.3 - 3.5 Vdc

Low band - 17MHz 0.6V p-p

3.23 Vdc RX / 0 Vdc TX0.15 Vdc RX / 3.25 Vdc TX

1.5 - 11 Vdc

0 = UNLOCK

D210

A1A2A3

K1K2K3

A2A3

K1K2K3

D211

A1

TP201R2391K

TP200

C286

C284

.01uF

.01uF

.01uF

C285

SH200SHIELD

2.7pFC237

SHIELDSH201

C283 R285

100.01uF

47K

R219

C255.047uF

.047uFC256

AUX2

VCTRL

5V

16.8MHZ

LOCK

AUX3

Lowband 29-42/35-50MHz Synthesizer Schematic Diagram

http

://w

ww.m

yrad

io16

8.na

me

it Board/Schematic Diagrams and Parts List

NP

1st Lo frequency

4.56 Vdc

1.57 Vdc

3.64 Vdc

3.28 Vdc

17 MHz2.7 V p-p

13 Vdc

RECEIVE -47dBm SIGNAL AT 35.04MHz WITH 1K TONE.

C2474.7uF

R223100K

2KR229

C257

.047uF

C206

100uH

L225

L226

4.7uH

2.2uFC258

C236100pF CR211

47pF

510

C242

R225

R22275K

C2590.47uF

100R230

R22851

R227100 C260

.01uF

C287

1K

.01uF

R288

47K

R2893.9

Q288

R287

C263

12

VMULT4 11

13V

RO

WARP 25

XTAL1 23

XTAL2 24

4.7uF

30

SFOUT 28

TEST1 37

TEST2 38

VBPASS21

VC

P47

VMULT1 15

VMULT2 14

VMULT3

PD

_VD

DPREIN32

PR

E_G

ND

33

34P

RE

_VD

D

PVREF35

REFSEL18

SFBASE27SFCAP26

SFIN

43

4LOCK

MODIN10

41MODOUT

NC117

NC229

NC331

PD

_GN

D44

5

9CLK8

DATA7

6D

GN

D

DV

DD

36

FREFOUT 19

IADAPT 45

INDMULT 16

IOUT

48

AUX2 1

AUX3 2

AUX4 3

AV

DD

20

BIAS140

BIAS239

CCOMP42

CEX

U205LVFractN IC

ADAPTSW 46

AG

ND

22

AUX1

Y20175Z03

GN

D1

GN

D1

4

OUT 3IN6

.01uFC233

2.2uFC281C280

10uF

4NCON_OFF*3VIN1 VOUT 5

LP2980U200

GND2

R2860

4.7uFC299

C249.01uF

R224

200

0.47uFC234

0.47uFC232

C2610.47uF

C298.01uF

U204ADP3300

6ERR

1

GN

D

5 IN

2NR4OUT

3 SD

VSF

PRE_IN

4V_3.3V

Vdda

SWB+

MODINDATA

CLKCSX

Page 256: Motorola Gp328 338 Service Manual

6E-20 Circuit Board/Schematic Diagrams and Parts List

2462587T19 220 nH

2113743N32 18 pF

Part Number

C215 2113740L40 82 pF 2113740L38 68 pF

-14dBm RX-12dBm TX

+6 dBm

C202 2113743N42 47 pF

+4dBm TX-22dBm RX

2.9 Vdc

+4dBm RX-16dBm TX

L207 2405452C63 1.35 uH

+7 dBm TX+15.25 dBm RX

L208

2462587T19 220 nH

2405452C27 4.8 uH

2113743N40 39 pF

C203 2113743N34 22 pF

TONE.LLIVOLTMETER.

Value Part Number Value

R1 29.7 - 42 MHz R2 35 - 50 MHz

L209 2462587T20 270 nH

2462587T20 270 nH

Designator

620nH

L204C221

82pFC229

.01uF

1KR234

C23036pF

L2155.45nH

3.9R237

120nHL212

R2381K

56pFC231

330nH

L211

C297

.01uF

C23556pF

C228

10pFQ201

PRE_IN

TX_INJ

RX_INJ

FL0830469O

Lowb

http

://w

ww.m

yrad

io16

8.na

me

RX VCO

0.15 Vdc RX

3.25 Vdc TX

3.23 Vdc RX

VCO TOPVCO BOTTOM

4.45 Vdc RX0 Vdc TX

4.56 Vdc

4.52 Vdc TX0 Vdc RX

+11 dBm RX-7 dBm Tx

0.8 Vdc

RECEIVE -47dBm SIGNAL AT 35.04MHz WITH 1KHzRF MEASUREMENTS MADE WITH BOONTON 92 MI

-16 dBm RX

0 dbm TX

C222

TX_VCO

0 Vdc TX

L207

.01uF

4.8uH

C202

56R236

47pF

C216

30pF

2.2K

R233

.01uFC214

.01uFC227

SHIELDSH203

1.35uHL203

C203

22pF

270nHL208

CR202

16pF

C226

C215

82pF

1.35uH

L201

CR203

C218.01uF

R23230K

2pFC224C201

SHIELDSH202

1000pF

100R203

1.35uHL210

S

U207

Q204

D

L209270nH

.01uFC225

CR201

U203

Q202

D

S

R204180

56

R206

50-300MHz

TR201RESONATOR

C219.01uF

68R231

L2021.35uH

Q203

D

S

CR204

820R235

6.8pF

C220

5.1pFC223

VCTRL

AUX3

AUX2

VSF

and 29-42/35-50MHz Voltage Controlled Oscillator Schematic Diagram

Page 257: Motorola Gp328 338 Service Manual

Circu 6E-21

2113740L24 18 pF

2460591X14

L102

L106

L100

2113740L34 47 pF 2113740L33 43 pF

2460591X10 50 nH

2113740L40 82 pF

ValuePart Number

2113740L35 51 pF

2113740L37 62 pF

L105 2460591X09 135 nH

L107

2460591X12

R2 35 - 50 MHz

Value

R1 29.7 - 42 MHz

2113740L38 68 pF

C115

C110

2460591X16

C107 2113740L39 75 pF

2460591X15 46 nH

2113740L24 18 pF

2460591X13 120 nH

2405613Z06 5.45 nH

C106

C111

Designator

C103

C114

Part Number

2113740L39 75 pF

2113740L37 62 pF

2113740L36 56 pF

2113740L25 20 pF

2113740L25 20 pF

2405613Z09 7.30 nH

2460591X13 2460591X12

L101 2460591X08

IF109

75pFC107

200

125nH

R101

L100.01uFD100C146

L105

C145.01uF

C11520pF 20pF

C103

C106

62pF

SH100SHIELD

D101

L102

110nH

L101

166nH

2

3

5

4XFMRT100

1

750nHL103

TAB44

.01uFC144

J102ANTENNA_NUT

TAB11

TAB22

TAB33

2.2uHL104

C120200pF

1

2

3

J101RF_JACK

4GND

75pF

C114

M101

C11182pF47pF

C119

C110

47pF

C11847pF

22pF

C147

E

TX

5

RE

BATT_

FL0830473O

Lowband 29-42/35-50MHz Transmitter Schematic Diagram

http

://w

ww.m

yrad

io16

8.na

me

it Board/Schematic Diagrams and Parts List

NP

IF101

30pFC148

IF102

200R106

VR1026.8V

.01uF

C134

C127

10uF

C1250.1uF

.01uF

BEADE100

C124

IF108

L108220nH

6.2KR108

C139

100R113

.01uF

C1081uF

VR101LM50

GN

D

3

PO

S1

2VOUT

Q100

S

D

C126.01uF

C149.01uF

220nH

L109

C123

IF103

510pF

15V

G

6VL

19VLIM

200

R103

2T1

30T

EM

P

V10

1416V

45

17 V5EXT

20VAR1

18 VAR2

24VAR3

4INT

22 NA

11Q

10Q

X

1RFIN

21 RS

31R

SE

T

23 RX

7CL

26C

LK

12C

Q13

CQ

X28

DAT

A

F16

89

8GND1

25G

ND

2

32A

NO

27B

PO

S

29C

EX

CI 3

5CJ

R112100

H99S-4U102

IF107

IF105

TP100

1000pF

C129

C138

.01uF

10

R104

R117

C122

1MEG

12KR111

510pF

24K

R110

1000pFC131

10

R115

C142

.01uF 0.1uF

C128

2KR116

0.075

R102

.01uFC135

R118

IF106

10

200pFC121

R105200

0.1uF

C132.01uF

C133

C140

.01uF

470R107

PB505SWITCH

12

6.75nHL107

R114470K

10R119

C136.01uF

IF104

1000pFC137

.01uFC143

C141

VCNTRL14

VD12

VG13VG2

3300pF

13

8 NC19 NC2

10NC3

15NC4

16 RFIN RFOUT1 67RFOUT21

U10109Z67

11 G2

GN

D1

4

GN

D2

5

GN

D3

12

GN

D4

1K

R109

M100HEATSINK

POS

L110

C117510pF

L106

C130

1000pF

MER

_INJ

V_TX

CSX

CLK

DATA

SET

B+_4

RX_IN

Page 258: Motorola Gp328 338 Service Manual

6E-22 Circuit Board/Schematic Diagrams and Parts List

LowbaList

CircuiRef

C103C103**C106C106**C107C107**C108C110C110**C111C111**C114C114**C115C115**C118C118**C119C119C120C121C121**C122C123C124C125C126C127C128C129C130C131‘C132C133C134C135C136C137C138C139C140C141C142C143C144C145C146C147

escription

C410 2113928N01 0.1uFC411 2113743M24 0.1uFC412 2311049A59 10uFC414 2113743M24 0.1uFC415 2109720D01 0.1uFC416 2113928N01 0.1uFC419 Not PlacedC420 2113743L41 .01uFC421 2113928N01 0.1uFC422 2113743M24 0.1uFC423 2113743N50 100pFC424 2311049A59 10uFC425 2113743M24 0.1uFC426 2113743N50 100pFC427 2113743N50 100pFC428 2113743M24 0.1uFC429 2113743M24 0.1uFC430 2113928N01 0.1uFC431 2113743N50 100pFC432 Not PlacedC433 2113743L41 .01uFC434 2113743M24 0.1uFC435 2113743M24 0.1uFC436 2113743N34 22pFC437 2113743N34 22pFC438 2113743F18 2.2pFC440 2113743F18 2.2pFC441 2113743N50 100pFC442 2113743E20 0.1uFC443 2113928N01 0.1uFC444 2113743N50 100pFC445 2113743N50 100pFC447 2113743M08 0.022uFC448 2113928N01 0.1uFC449 2113743N50 100pFC450 Not PlacedC451 2113743M08 0.022uFC452 2113743G26 4.7uFC453 2113743N50 100pFC456 2113743N50 100pFC458 2113743N50 100pFC459 2113743N50 100pFC463 2113743N50 100pFC466 2113743N50 100pFC467 2113928N01 0.1uFC471 2113743N50 100pFC472 2113743N50 100pFC473 2113743N50 100pFC475 2113743H14 10uFC476 2113928D08 10uFC479 2113928N01 0.1uF

CircuitRef

MotorolaPart No. Description

http

://w

ww.m

yrad

io16

8.na

me

nd 29-42/35-50MHz Radio Parts

t MotorolaPart No. Description

2113740L25 20pF2113740L24 18pF2113740L37 62pF2113740L35 51pF2113740L39 75pF2113740L36 56pF2113743F16 1.0uF2113740L34 47pF2113740L33 43pF2113740L40 82pF2113740L38 68pF2113740L39 75pF2113740L37 62pF2113740L25 20pF2113740L24 18pF2113740F48 47pF2113740F49 82pF2113740F46 62pF2113740F39 33pF2113740F58 200pF2113740F58 200pF2113740F59 220pF2113740A72 510pF2113740A72 510pF2113741A45 56pF2113743M24 0.01uF2113741A45 56pF2311049A18 10uF2113743M24 0.01uF2113743L41 0.01uF2113743L17 1000pF2113743L17 1000pF2113743L41 0.01uF2113743M24 0.01uF2113743L41 0.01uF2113743L41 0.01uF2113743L41 0.01uF2113743L17 1000pF2113743L17 1000pF2113743L41 0.01uF2113743L41 0.01uF2113743L29 3300pF2113743L41 0.01uF2113743L41 0.01uF2113743L41 0.01uF2113741A45 56pF2113741A45 56pF2113743N34 22pF

C148 2113740F38 30pFC149 2113743L41 0.01uFC201 2113743L17 1000pFC202 2113743N42 47pFC203 2113743N34 18pFC204 2113743L41 0.01uFC205 2113743L41 0.01uFC206 2113743N42 47pFC214 2113741F49 0.1uFC215 2113740L40 82pFC216 2113740F38 30pFC218 2113741F49 0.1uFC219 2113741F49 0.1uFC220 2113743N22 15pFC221 2113741F49 0.1uFC222 2113741F49 0.1uFC223 2113743N19 5.1pFC224 2113743N09 2pFC225 2113743L41 0.1uFC226 2113743N31 16pFC227 2113741F49 0.1uFC228 2113743N26 10pFC229 2113743N48 82pFC230 2113743N39 36pFC231 2113743N44 56pFC232 2113743A27 0.47uFC233 2113743L41 0.01uFC234 2113743A27 0.47uFC235 2113932N44 56pFC236 2113743N50 100pFC237 2113743N12 2.7pFC242 2113743N42 47pFC247 2311049A56 4.7uFC249 2113743L41 0.01uFC255 2113741A61 0.047uFC256 2113741A61 0.047uFC257 2113741A61 0.047uFC258 2311049F16 2.2uFC259 2113743A27 0.47uFC260 2113743F49 0.01uFC261 2113741A27 0.47uFC263 2311049A56 4.7uFC280 2311049A57 10uFC281 2104993J02 2.2uFC283 2113743L41 0.01uFC284 2113743L41 0.01uFC285 2113743L41 0.01uFC286 2113743L41 0.01uFC287 2113743L41 0.01uFC297 2113741F49 0.1uFC298 2113743L41 0.01uF

CircuitRef

MotorolaPart No. Description

C299 2311049A56 4.7uFC301 2113743N30 15pFC302 Not PlacedC303 2113743R33 4700pFC304 2113743R33 4700pFC305 2113743R33 4700pFC306 2113743N65 8pFC307 2113743E20 0.1uFC308 2180478Z20 1uFC309 2113741F49 0.1uFC310 2113743E20 0.1uFC311 2113743N29 13pFC312 2113743N29 13pFC313 2113743N29 13pFC314 2113743N29 13pFC315 2113743N25 9.1pFC316 2113743N30 15pFC317 2311049A59 10uFC319 2311049A59 10uFC320 2113743A23 0.22uFC321 2113743E07 0.022uFC323 2113743E07 0.022uFC324 2113743N50 100pFC325 2113743A23 0.22uFC326 2113743E20 0.1uFC327 2113743R33 4700pFC328 2113743E07 0.022uFC330 2113743E20 0.1uFC331 2113743E07 0.022uFC332 2113743E20 0.1uFC333 2109720D14 0.1uFC334 2113740A82 1500pFC335 2113743A23 0.22uFC336 2311049A59 10uFC337 2113743E07 0.022uFC339 2113743F16 1uFC340 2113743F16 1uFC341 2113743F16 1uFC342 2113743F16 1uFC343 2113743A23 0.22uFC348 2113743N09 2pFC400 2113743L41 .01uFC401 2113743M24 0.1uFC402 2113743M24 0.1uFC403 2113743G24 2.2uFC404 Not PlacedC405 Not PlacedC406 Not PlacedC407 2113928N01 0.1uFC408 2113743N50 100pFC409 2113743M24 0.1uF

CircuitRef

MotorolaPart No. D

Page 259: Motorola Gp328 338 Service Manual

Circu 6E-23

C480C481C482C490C491C492C493C494C495C496C497C500C502C503C504C505C506C507C511C512C513C514C515C516C522C533C534C535C536C537C538CR2CR2CR2CR2CR2CR2CR3CR4CR4CR4CR4CR5CR5D100D101D102D103D104D210D211

CircR

nH

, Push-button, Push-button, Push-button, Push-button, Push-button

ET P-Channel

PNPN

ET P-ChanPN/PNP

Description

R110 0662057M98 10KR111 0662057N01 12KR112 0662057M50 100R113 0662057M50 100R114 0662057N39 470KR115 0662057M26 10R116 0662057M81 2KR117 0662057N47 1MR118 0662057A01 10R119 0662057A01 10R120 0662057A25 100R122 Not PlacedR203 0662057M50 100R204 0662057M56 180R206 0662057U45 56R219 0662057N15 47KR222 0662057N20 75KR223 0662057N23 100KR224 0662057M57 200R225 0662057M67 510R227 0662057M50 100R228 0662057M43 51R229 0662057M81 2KR230 0662057M50 100R231 0662057M46 68R232 0662057N10 30KR233 0662057M82 2.2KR234 0662057A41 470R235 0662057M72 820R236 0662057M44 56R237 0662057M16 3.9R238 0662057M74 1KR239 0662057M74 1KR285 0662057M50 100R286 0662057M01 0R287 0662057N15 47KR288 0662057M74 1KR289 0662057M16 3.9R301 0662057M78 1.5KR302 0662057N15 47KR303 0662057N15 47KR304 0662057M78 1.5KR305 0662057M98 10KR306 0662057M77 1.3KR307 0662057M92 5.6KR308 0662057N01 12KR309 0662057N22 91KR310 0662057M87 3.6KR312 0662057M78 1.5KR314 0662057M98 10KR315 0662057N15 47K

CircuitRef

MotorolaPart No. Description

http

://w

ww.m

yrad

io16

8.na

me

it Board/Schematic Diagrams and Parts List

2113743G24 0.1uF2113928N01 0.1uF2113928N01 0.1uF2113743N50 100pF2113743N50 100pF2113743N50 100pF2113743N50 100pF2113743N50 100pF2113743N50 100pF2113743N50 100pF2113743N50 100pF2113743L41 0.01uF2311049A05 0.47uF2113743N50 100pF2113743N43 51pF2113743N50 100pF2113743N50 100pF2113743K15 0.1uF2113743N50 100pF2113743N50 100pF2113743N50 100pF2113743N50 100pF2113743N44 56pF2113928N37 30pF2113743L41 0.01uF2113743N40 100pF2113743N24 8.2pF2113743N09 2pF2113743N36 27pF2113743N16 3.9pF2113743N48 82pF

00 4880107R01 Varactor01 4805648Q13 Dual Varactor02 4805648Q13 Dual Varactor03 4813833C07 Varactor04 4813833C07 Varactor11 4813833C03 Varactor01 4813833C01 Varactor11 4802245J62 Schottky Diode12 4802245J62 Schottky Diode13 4802245J62 Schottky Diode40 4813833C02 Dual Diode Common Cathode02 4880107R01 Rectifier03 4805729G49 LED Red/Yellow

4802482J02 Pin Diode4809948D23 Pin Diode4813825A20 Dual Diode4813825A20 Dual Diode4813825A20 Dual Diode4802233J09 Triple Diode4802233J09 Triple Diode

uitef

MotorolaPart No. Description

D501 4802245J42 Ring Quad DiodeD502 4805129M06 Dual DiodeE100 2480640R01 Ferrite BeadE400 2480640Z01 Ferrite BeadE401 2480640Z01 Ferrite BeadE402 2480640Z01 Ferrite BeadE403 2480640Z01 Ferrite BeadE404 2480640Z01 Ferrite BeadE405 2480640Z01 Ferrite BeadE406 2480640Z01 Ferrite BeadE407 2480640Z01 Ferrite BeadE408 2480640Z01 Ferrite BeadE409 2480640Z01 Ferrite BeadF1 6580542Z01 Fuse 3AFL301 4885631B01 109.65MHz Crystal FilterFL401 4870368G02 38.4kHz Crystal OscillatorJ1 0986237A02 ConnectorJ101 0985613Z01 RF JackJ102 0280519Z01 Antenna NutJ400 0905505Y04 40-pins ConnectorJ403 0905505Y02 20-pins ConnectorL100 2460591X13 125nHL100** 2460591X12 110nHL101 2460591X08 166nHL101** 2460591X14L102 2460591X12 110nHL102** 2460591X16L103 2462587T27 750nHL104 2462587Q20 2.2uHL105 2460591X13 125nHL106 2460591X10 50nHL106** 2460591X15 46nHL107 2484562T03 8nHL107** 2484562T20 5nHL108 2462587Q08 220nHL109 2462587Q08 220nHL110 2460591X11 100nHL200 2462587Q42 390nHL201 2405452C63 1.35uHL202 2405452C63 1.35uHL203 2405452C63 1.35uHL204 2462587T25 620nHL207 2405452C27 4.7uHL207** 2405452C63 1.35uHL208 2462587T20 270nHL208** 2462587T19 220nHL209 2462587T20 270nHL209** 2462587T19 220nHL210 2405452C63 1.35uHL211 2462587T21 330nHL212 2462587T16 5.45nH

CircuitRef

MotorolaPart No. Description

L215 2409348J04 13.85L225 2462587L50 100uHL226 2462587Q24 4.7uHL301 2462587V35 120nHL302 2462587T23 470nHL303 2462587V38 220nHL304 2462587T22 390nHL305 2462587T22 390nHL306 2462587T40 33nHL307 2462587Q20 2.2uHL308 2462587Q20 2.2uHL400 2462587Q42 390nHL401 2462587Q42 390nHL410 2462587Q42 390nHL411 2462587Q42 390nHL501 2462587T17 150nHL502 2462587T20 270nHL503 2462587T30 1nHL504 2462587T24 560nHL507 2462587T17 150nHL508 2462587V32 68nHPB501 4080523Z01 TactilePB502 4080523Z01 TactilePB503 4080523Z01 TactilePB504 4080523Z01 TactilePB505 4080523Z01 TactileQ100 4813828A08 FETQ201 4802245J44 NPNQ202 4805218N82 FETQ203 4805218N82 FETQ204 4805218N82 FETQ288 4802245J44 NPNQ301 4805218N63 NPNQ400 4809579E18 MOSFQ403 4880214G02 NPNQ405 4802245J54 Dual NQ410 4802245J54 Dual NQ411 Not PlacedQ416 4809579E18 MOSFQ417 4802245J50 Dual NQ509 4880214J44 NPNQ510 4880214G02 NPNR101 0662057A18 51R102 0680735Z01 0.075R103 0662057A25 100R104 0662057M26 10R105 0662057A32 200R106 0662057A32 200R107 0662057M66 470R108 0662057M93 6.2KR109 0662057M74 1K

CircuitRef

MotorolaPart No.

Page 260: Motorola Gp328 338 Service Manual

6E-24 Circuit Board/Schematic Diagrams and Parts List

nly

R316R317R318R400R401R402R403R405R406R407R408R409R410R411R413R414R415R416R418R419R420R421R423R424R425R426R427R428R429R431R432R434R435R436R437R445R446R447R448R449R450R457R460R461R462R463R471R472R473R475R476

CircuiRef

ulatorage ZIFulator

M 128K x 816K x 8

trollerulator

ture Senseerererererererer

erererererererererscillator

escription

http

://w

ww.m

yrad

io16

8.na

me

* Motorola depot servicing o

** Range 2 only

0662057M57 2000662057M81 2K0662057M33 200662057N15 47K0662057M01 0Not PlacedNot Placed0662057M01 00662057N20 75K0662057N19 68KNot Placed0662057M98 10K0662057N23 100K0662057M98 10K0662057M01 00662057V34 180K0662057V26 91K0662057N13 39KNot Placed0662057M67 5100662057B46 10M0662057M81 2K0662057N21 82K0662057N12 36K0662057N10 30K0662057M35 3300662057M84 2.7K0662057M10 2.20662057M98 10K0662057N39 470K0662057N16 51K0662057M62 3300662057M81 2K0662057M74 1K0662057M01 00662057N08 24K0662057N30 220K0662057N52 1.6M0662057N33 270K0662057N08 24K0662057T45 680662057M98 10K0662057M90 4.7K0662057M56 1800662057M98 10K0662057M61 3000662057M92 5.6K0662057M93 6.2K0662057M26 100662057M01 00662057N35 330K

t MotorolaPart No. Description

R477 0662057M74 1KR478 0662057M98 10KR481 0662057N08 24KR492 0662057M01 0R499 Not PlacedR501 0662057M70 680R502 0662057M56 180R503 0662057M74 1KR504 0662057N01 12KR505 0662057M68 10KR507 0662057M60 270R508 0662057M32 18R509 0662057M60 270R510 0662057M87 3.6KR512 0662057M90 4.7KR513 0662057M26 10R514 0662057N15 47KR515 0662057M98 10KRT400 0680590Z01 Thermistor 33KS501 4080710Z01 Channel SwitchS502 1880619Z01 Volume SwitchSH100 2686076A01 ShieldSH200 2685709B02 ShieldSH201 2680511Z01 ShieldSH202 2680511Z01 ShieldSH203 2686079A01 ShieldSH300 2680516Z01 ShieldSH301 2680508Z01 ShieldSH302 2680697Z01 ShieldSH303 2680553Z01 ShieldSH400 2680505Z01 Controller Memory ShieldSH401 2680506Z01 Controller On/Off ShieldSH402 2680515Z01 Controller Microprocessor

ShieldSH403 2680516Z01 Controller ASFIC Cmp/Audi

PA ShieldSH500 2680555Z01 ShieldSH501 2680697Z01 ShieldSH502 2680696Z01 ShieldT100 2505515V03 Transformer CoilT501 2580541Z01 Transformer CoilT502 2580541Z01 Transformer CoilTR201 2460593D01 Resonator, 50-300MHzU101 5105109Z67 LDMOS DriverU102 5185765B01 Power ControlU200 5102463J58 3.3V RegulatorU203 4805649Q14 Varactor DiodeU204 5105739X05 Linear RegulatorU205 5185963A27 LV Fractional N SynthesizerU207 4805921T06 Dual PNPU301 4885622B01 Dual Gate MOSFET

CircuitRef

MotorolaPart No. Description

U302 5185623B01 3.3V RegU303 5109632D83 Low VoltU400 5102463J40 3.3V RegU404 5185963A53 ASFICU405 Not PlacedU406 *5102463J59 Flash ROU407 *5102463J64 EEPROMU409 5102226J56 MicroconU410 5102463J57 3.3V RegU420 5102463J44 Audio PAVR101 5185963A15 TemperaVR102 4802245J51 6.8V ZenVR200 4802245J51 6.8V ZenVR201 4802245J51 6.8V ZenVR202 4802245J51 6.8V ZenVR203 4802245J53 6.8V ZenVR432 4805656W08 5.6V ZenVR433 4805656W08 5.6V ZenVR434 4802245J51 6.8V ZenVR445 4802245J53 10V ZenVR446 4802245J53 10V ZenVR447 4802245J53 10V ZenVR448 4802245J53 10V ZenVR449 4802245J53 10V ZenVR450 4802245J53 10V ZenVR500 4800245J51 6.8V ZenVR501 4813830A18 6.8V ZenVR502 4802245J51 6.8V ZenY201 4805875Z03 Crystal O

CircuitRef

MotorolaPart No. D

Page 261: Motorola Gp328 338 Service Manual

Troubleshooting charts 6E-25

8.0 Troubleshooting charts

MCU Check

Power UpAlert Tone

OK?

SpeakerOK?

U409 EXTAL=7.3728 MHz?

U205 Pin 1917.0MHz

5V at U204?3.3V at U400?

U409 Reset Pin94 High?

MCU is OK

Not able to pro-gram RF Board

ICs

Before replacingMCU, check SPIclock, SPI data,

and RF IC select

ReplaceSpeaker

Read RadioOK?

CheckSetup

Reprogram thecorrect data.

See FGUTroubleshooting

7.5V atPin 5 U204?7.5V at Pin 8

U400

CheckQ400

ReplaceU204/U400

Check any shortto SWB+,

Vdda or Vddd

Press PTT. RedLED does not

light up

PTT U409Pin 53low?

Press PTTCR502-2

High?

CheckPB504

CheckCR502-2voltage

LED,CR502,R501

OK?

ReplaceFaulty

Component

CheckAccessories

J403OPT_SEL_1 &OPT_SEL_2

Pin 8 & 9low?

Radio couldnot PTT

externally

U409Pin 52, 6

low?

See FGUTroubleshoot-

ing chart

LED shouldlight up

CheckMCU

PTT

NO

YES

YES

No

No

NO

YES YES

NO

YES

YES

NO

NO

YES

YES

NO

NO

YES

NO

YES

NO

YES

YES

NO

NO

YES

EXTSPKR

EXTPTT

INTAUDIO

J403 Pin 9 low?Pin 8 high?

ASFIC U404Pin 14 & 15

high?

CheckAccessories

CheckU404

CheckU420 Audio PA

NO

NO

YES

YES

J403 Audioat Pin 2 &

Pin 3

Check Spk.Flex Connec-

Audio atAudioPA(U420)input

Audio from Pin 41ASFIC, U404?

CheckASFIC U404

CheckAudio PA(U420)

CheckU303LV ZIF

Audio atPin 2

U404?

NO

NO

NO

YES

YES

NO

YES

Troubleshooting Flow Chart for Controller

Page 262: Motorola Gp328 338 Service Manual

6E-26 Troubleshooting charts

Bad SINADBad 20dB Quieting

No Recovered Audio

START

Audio at pin27 of U303?

Check ControllerYes

No

Spray of inject 1st IF intoXTAL Filter

IF Freq: 109.65 MHz

Audio heard?BYes

No

Check 2nd LO ControlVoltage at C308

VCO locked?BYes

17.0 MHzcheck at pin

22 U303?

Activity onU303 sel pin?

Check FGU

No

No

A

A

Yes

Check Q301 biascircuitry for faults.

Rotate Freq. Knob

Check controller.

Before replacing U303, check 2ndVCO Q301. Check VCO O/P level,

C315, C316.

Yes

No

Troubleshooting Flow Chart for Receiver (Sheet 1 of 2)

Page 263: Motorola Gp328 338 Service Manual

Troubleshooting charts 6E-27

IF Signal atL301?

No

RF Signal atT501?

RF Signalat collector

Q509?

No

RF Signal atC504?

No

RF Signal atC147?

No or

Check transmit harmonic filter, antennaswitch and J101

Check filter betweenC147 & C504

Inject RF into J101

No

Yes

Check RF amp (Q509)Stage.

Check filter betweenQ509& T301.

Yes

Check T501, T502,D501, R507, R508,

R509,C516,L508Yes

1st LO O/P310OK?Locked?

Yes

Check FGU

Yes

Trace IF signalfrom L301 to

U301. Check forbad XTAL filter.

No

Yes U301 drainOK?

IF signalpresent?

Before replacingU303, check

U303 voltages;trace IF signal

path.

Yes

Biaising onU301 OK?

Troubleshootbiasing, AGC

circuits and U301

No

No

YesA

B

weak RF

Troubleshooting Flow Chart for Receiver (Sheet 2 of 2)

Page 264: Motorola Gp328 338 Service Manual

6E-28 Troubleshooting charts

START

No Power

Is Current~ 2 A?

Is control voltageat U101 Pin 1 > 5 Check PCIC

1. Check Pin Diodes2. Check Harmonic Filter3. Check PA Bias

Inspect/Repair Tx.Output Network

Is PowerOK?

Done

Check input toU101, Pin 16

Is voltage> 1 Vpp?

TroubleshootVCO

Check levelU101, Pin 6

Is level>5 Vpp?

Is PowerOK?

ReplaceQ101

Yes No

No

Yes

No

Yes

No

Yes

Yes

No

Yes

No

Troubleshooting Flow Chart for Transmitter

Check componentsaround U101

Is PowerOK?

Done

ReplaceU101

NoCheck components

around Q100

Yes

Done

Page 265: Motorola Gp328 338 Service Manual

Troubleshooting charts 6E-29

Is informationfrom mP U409

correct?

Is U205Pin 18

Is U205Pin 47

In receive, isPin 1 < .7 V and Pin 2 >

3 Vplus in transmit isPin 1 > 3 V and Pin 2 <

.7 V?

Start

Visualcheck of theBoard OK?

CorrectProblem

Check 5VRegulator

+5V at U205Pin’s

13 & 30?

Is 17.0 MHzSignal at

U205 Pin 19?

Check Y201,CR211,C236,C237,C242,

R219

Signalat Pin

16 of U205?

Replace U205

Replace orresolder

necessarycomponents

Is RF level atU205 Pin 32>-30 dBm?

Are loop filter partsR224,R225,R227,R228,R229,C256,C257,C259 and C260

Replace U201

If R234, R238 & C297are OK, then see VCOtroubleshooting chart

Do Pins 7,8 & 9of U205 toggle

when channel ischanged?

Check programminglines between U409

and U205 Pins 7,8 & 9

Replace U205

Check uP U409Troubleshooting

Chart

NO

YES

NO

YES

NO

NO

YES

NO

YES

YES

NO

YES

YES

YESNO

NO

NO

NO

YES

NO

YES

YES

Check C240, C247,C246, C249, L223

and D201

3.3V at U205pins 5, 20, 34

& 36

Check U400and L225

Is17.0MHzsignal atU201 pin

23?

ReplaceU205

YES

NO

NO

YES

Troubleshooting Flow Chart for Synthesizer

Page 266: Motorola Gp328 338 Service Manual

6E-30 Troubleshooting charts

Level >+2 dBm

Check signal atcollector of Q201

No

YesCheck L204, L211, L212,L215, C221, C228, C229,C230,C231, C235,C297,

R204, R234, R238

Troubleshooting Flow Chart for VCO

Check signal atcollector of Q201

No RX LO or Nosignal at U205 Pin

32 in RX

No TX LO or Nosignal at U205 Pin

32 in TX

Level >+10 dBm?

Check signal atdrain of Q203

Level >-3 dBm?

Check signal atdrain of Q202

and Q204

Level >+7 dBm?

No

Yes

Replace Q201Yes Yes

Done

Check DC volt-age across R203

Problemfixed? Replace Q203

Check C215, C216,L207, L208, L209,

U203

Level >500 mV ?

Check C200, C202, C203,C222, C223, L201, L203,

TR201, CR202

Replace Q202and Q204

YesYes

No No

NoNo

Page 267: Motorola Gp328 338 Service Manual

7-1

Section 7

FLEX LAYOUT/SCHEMATIC DIAGRAMS AND PARTSLISTS

1.0 Keypad-Controller Interconnect Flex

2.0 Schematic for Keypad-Controller Interconnect Flex

98C

J200

40

J100

40 <- TO KP

8480475Z02 REV A TO CTRL ->

Front MetalView From Top Side

KEYPADJ100

EXT_MIC

VS_CS

SW_B+

Vddd

VS_AUDSEL

Det_Aud_Snd

Rx_Aud_Rtn

Tx_Aud_Snd

Tx_Aud_Rtn

Flat_Tx_Rtn

Opt_Bd_En

Rdy/Req

Rx_Aud_Snd

ON

INT_EXT_Vdd

Key_Row

Key_Col

PTT

KEY_INT

VS_INT

RESET

LED_EN

OFF_BATT_DATA_OUT

VS_GAINSEL

SrD_Rtn (MISO)

SrD_Snd (DATA)

R_W

LCD_SEL

DB0

DB1

DB2

DB3

DB4

DB5

DB6

DB7

A0

SCK_Snd (CLK)

VS_RAC

Gnd

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

CONTROLLERJ200

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

EXT_MIC

VS_CS

SW_B+

Vddd

VS_AUDSEL

Det_Aud_Snd

Rx_Aud_Rtn

Tx_Aud_Snd

Tx_Aud_Rtn

Flat_Tx_Rtn

Opt_Bd_En

Rdy/Req

Rx_Aud_Snd

ON

INT_EXT_Vdd

Key_Row

Key_Col

PTT

KEY_INT

VS_INT

RESET

LED_EN

OFF_BATT_DATA_OUT

VS_GAINSEL

SrD_Rtn (MISO)

SrD_Snd (DATA)

R_W

LCD_SEL

DB0

DB1

DB2

DB3

DB4

DB5

DB6

DB7

A0

SCK_Snd (CLK)

VS_RAC

Gnd

Page 268: Motorola Gp328 338 Service Manual

7-2 Parts List for Keypad-Controller Interconnect Flex

3.0 Parts List for Keypad-Controller Interconnect Flex

4.0 Universal Connector Flex

ReferenceSymbol

MotorolaPart No. Description

J100 0980521Z01 Connector, 40 pinJ200 0905505Y04 Speaker, 20 ohm

Back MetalView From Top Side

c

98

8480549Z03 rev B

C402

M400

20J403

J404J405

J406J407

J408J409

J410J411

J412J413

J414J415

J416

M401

Front MetalView From Top Side

Page 269: Motorola Gp328 338 Service Manual

Schematic for Universal Connector Flex 7-3

5.0 Schematic for Universal Connector Flex

6.0 Parts List for Universal Connector FlexReference

SymbolMotorolaPart No. Description

C402 2113740A55 Cap, 100pFM400 5085962A02 Speaker, 20 ohmM401 5013920A04 Mic, Mini electrec

13 PIN UNIVERSAL CONN

EXT_SPKR+

EXT_SPK-

OPT_B+

EXT_MIC

OPT_SEL_2

OPT_SEL_1

GND

RX_DATA

TX_DATA

J404

J405

J406

J407

J408

J409

J410

J411

J412

SPKR_20

SPKR_20

OPT_B+30

RSSI

RX_AUDIO/TX_AUDIO

BOOT_CTRL

NC

J413

J414

J415

J416

1

2

C402100pF

M401

GND

INT_SPK+

INT_SPK-

EXT_SPKR+

EXT_SPK-

DPT_B+

EXT_MIC

OPT_SEL_2

OPT_SEL_1

GND

RX_DATA

TX_DATA

GND

RSSI

RX_AUDIO/TX_AUDIO

BOOT_CTRL

NC

MIC

GND

GND

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

J40320 PIN CONN

M400

SPKR_20

SPKR_20

Page 270: Motorola Gp328 338 Service Manual

7-4 Parts List for Universal Connector Flex

Page 271: Motorola Gp328 338 Service Manual

s,

t you

Technical Information UpdatesAs we continue to make engineering enhancements to our products, the information in ourService Manuals need to be updated accordingly. If you wish to be informed of these updatekindly fill in and fax us your details.

Manual No.: 6804110J64

Kindly complete the Service Manual Feedback Form on the next page to help us ensure thareceive the most accurate and complete information.

Fax to: 6-04-6124944

The Technical Publications Coordinator,Media and Communications,R&D Department,Motorola Penang.

Your Details

Name/Contact Person:

Company Name:

Address:

Telephone No.:

Fax No.:

Email Address:

How would you like to receive the update notification?Through: o mail o email o fax

Page 272: Motorola Gp328 338 Service Manual

ls.tion.

tain

ease

Service Manual Feedback FormWe believe that reports from users provide valuable information for producing quality manuaKindly take a few moments to provide feedback on this manual. Thank you for your coopera

1. Please check all the appropriate boxes:

2. How do you rate this particular Service Manual?o excellent o very good o good o fair o poor

3. Did this Service manual provide you with the information necessary to service and mainthe specific equipment?o very much so o generally yes o to some extent o no

4. We would appreciate any corrections or recommendations for improving this manual. Plinclude the specific page number(s) of the diagram or procedure in question.

5. General comments/suggestions:

Manual No.: 6804110J64

Fax to: 6-04-6124944

The Technical Publications Coordinator,Media and Communications,R&D Department,Motorola Penang.

Com

ple

te

Inco

mp

lete

Cor

rect

Inco

rre

ct

Cle

ar

Con

fusi

ng

Siz

eA

de

qua

te

Siz

eTo

oS

ma

ll

No

tCov

ere

din

this

Man

ual

Disassembly Pro-cedures

AlignmentProcedures

ExplodedViews

SchematicDiagrams

Circuit BoardDetails

Electrical PartsList

Exploded ViewParts List