BSM front - Diagramasde.com · 2013. 5. 13. · EP350. Technical Information Updates ... (Motorola Publication part number 68007024010) to ensure compliance with RF energy exposure

Portable RadiosDetailed Service Manual

EP350

Technical Information UpdatesAs we continue to make engineering enhancements to our products, the information in our Service Manuals need to be updated accordingly. If you wish to be informed of these updates, kindly fill in and fax us your details.

Manual No.: 6878422A01

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Manual No.: 6878422A01

Fax to: 6-04-6124944The Technical Publications Coordinator,Global Customer Documentation,R&D Department,Motorola Penang.

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Disassembly ProceduresAlignmentProceduresExplodedViewsSchematicDiagramsCircuit Board DetailsElectrical Parts ListExploded View Parts List

i

COPYRIGHT

Copyrights

© 2009 by Motorola, Inc. All rights reserved.

No part of this manual may be reproduced, transmitted, stored in a retrieval system, or translated into any language or computer language, in any form or by any means, without the prior written permission of Motorola Inc.

Computer Software Copyrights

The Motorola products described in this manual may include copyrighted Motorola computer programs stored in semiconductor memories or other media. Laws in the United States and other countries preserve for Motorola certain exclusive rights for copyrighted computer programs including, but not limited to, the exclusive right to copy or reproduce in any form the copyrighted computer program. Accordingly, any copyrighted Motorola computer programs contained in the Motorola products described in this manual may not be copied, reproduced, modified, reverse-engineered, or distributed in any manner without the express written permission of Motorola. Furthermore, the purchase of Motorola products shall not be deemed to grant either directly or by implication, estoppel, or otherwise, any license under the copyrights, patents or patent applications of Motorola, except for the normal non-exclusive royalty-free license to use that arises by operation of law in the sale of a product.

Trademarks

MOTOROLA and the Stylized M Logo are registered in the U.S.Patent and Trademark Office. All other product or service names are the property of their respective owners.

ii

SAFETY INFORMATIONProduct Safety and RF Energy Exposure Compliance

ATTENTION!

This is restricted to occupational use only to satisfy ICNIRP RF energy exposure requirements. Before using this product, read the RF energy awareness information and operating instructions in the Product Safety and RF Exposure booklet enclosed with your (Motorola Publication part number 68007024010) to ensure compliance with RF energy exposure limits.

For a list of Motorola-approved antennas, and other accessories, visit the following web site which lists approved accessories: http://www.motorola.com/radiosolutions

These servicing instructions are for use by qualified personnel only. To reduce the risk of electric shock, do not perform any servicing other than that contained in the Operating Instructions unless you are qualified to do so. Refer all servicing to qualified service personnel.

Before using this product, read the operating instructions for safe usage contained in the Product Safety and RF Exposure booklet enclosed with your radio.

iii

DOCUMENT HISTORY

The following major changes have been implemented in this manual since the previous edition:

Edition Description Date

6878422A01-A Initial edition Mar, 2009

6878422A01-B Added VHF and UHF1 band information (Chapter 8, 9, 10, 11, 12, 13)

August, 2009

iv

Notes

Table of Contents v

Table of Contents

Copyright ........................................................................................................ i

Safety Information......................................................................................... ii

Document History ........................................................................................ iii

Chapter 1 Maintenance ........................................................................ 1-1

1.1 Preventive Maintenance ................................................................................................................ 1-11.2 Inspection ...................................................................................................................................... 1-11.3 Cleaning......................................................................................................................................... 1-11.4 Safe Handling of CMOS and LDMOS............................................................................................ 1-21.5 General Repair Procedures and Techniques ................................................................................ 1-2

Chapter 2 Test Equipment, Service Aids, and Service Tools........... 2-1

2.1 Test Equipment.............................................................................................................................. 2-12.2 Service Aids................................................................................................................................... 2-2

Chapter 3 DC Power Distribution ........................................................ 3-1

3.1 DC Regulation and Distribution ..................................................................................................... 3-1

Chapter 4 Controller Theory of Operation.......................................... 4-1

4.1 RX Audio Circuit ............................................................................................................................ 4-14.1.1 Audio processor IC (U102) ............................................................................................... 4-1

4.1.1.1 RX Audio Processing......................................................................................... 4-14.1.1.2 RX Tone PL/Digital PL Decode Filtering............................................................ 4-2

4.1.2 Audio Amp ........................................................................................................................ 4-24.1.3 Internal and External Speaker .......................................................................................... 4-2

4.2 TX Audio Circuit ............................................................................................................................. 4-34.2.1 MIC and External MIC ...................................................................................................... 4-34.2.2 4-order 4 kHz Low-Pass Filter (U501-C, D) ...................................................................... 4-34.2.3 Audio processor IC (U102) ............................................................................................... 4-3

4.2.3.1 TX Audio Processing ......................................................................................... 4-34.2.3.2 Tx Tone PL/Digital PL Encode Filtering............................................................. 4-4

4.2.4 TX audio amplifier and 6 order 3 kHz Low-Pass filter....................................................... 4-44.2.5 TX modulation Adjustment................................................................................................ 4-4

4.3 Microprocessor Circuitry ................................................................................................................ 4-44.3.1 Memory Usage ................................................................................................................. 4-54.3.2 Control and Indicator Interface ......................................................................................... 4-54.3.3 Interface to USB programming ......................................................................................... 4-54.3.4 Storage of Customer-Specific Information........................................................................ 4-54.3.5 Sensing of VOX operating ................................................................................................ 4-54.3.6 Microprocessor Power-on reset Routine .......................................................................... 4-54.3.7 Microprocessor 7.3728 MHz Clock................................................................................... 4-5

vi Table of Contents

4.3.8 Battery indicator ................................................................................................................ 4-5

Chapter 5 435 – 480 MHz UHF2 Theory Of Operation ....................... 5-1

5.1 Introduction .................................................................................................................................... 5-15.2 UHF2 Receiver .............................................................................................................................. 5-1

5.2.1 Receiver Front End ........................................................................................................... 5-25.2.2 Receiver Back End ........................................................................................................... 5-2

5.3 UHF2 Transmitter .......................................................................................................................... 5-35.3.1 Power Amplifier................................................................................................................. 5-35.3.2 Antenna Switch ................................................................................................................. 5-35.3.3 Harmonic Filter.................................................................................................................. 5-35.3.4 Auto Power Control........................................................................................................... 5-4

5.4 UHF2 Frequency Generation Circuitry........................................................................................... 5-45.4.1 Reference Oscillator (12.8 MHz VCTCXO)....................................................................... 5-45.4.2 PLL IC Prescaler and Comparator.................................................................................... 5-55.4.3 Voltage Doubler and Charge Pump .................................................................................. 5-55.4.4 Loop Filter ......................................................................................................................... 5-55.4.5 Dual VCO.......................................................................................................................... 5-5

5.5 Keypad........................................................................................................................................... 5-6

Chapter 6 UHF2 Troubleshooting Tables ........................................... 6-1

6.1 Troubleshooting Table for Receiver (UHF2) ................................................................................. 6-16.2 Troubleshooting Table for Synthesizer (UHF2) ............................................................................ 6-26.3 Troubleshooting Table for Transmitter (UHF2) ............................................................................. 6-36.4 Troubleshooting Table for Board and IC Signals (UHF2) ............................................................. 6-4

Chapter 7 UHF2 Schematic Diagrams, Overlays, and Parts Lists ... 7-1

7.1 Introduction .................................................................................................................................... 7-17.1.1 Notes For All Schematics and Circuit Boards ................................................................... 7-17.1.2 Four Layer Circuit Board................................................................................................... 7-3

7.2 Speaker and Microphone Schematic ............................................................................................. 7-37.2.1 Speaker and Microphone Parts List .................................................................................. 7-3

7.3 Circuit Board/Schematic Diagram and Parts List (UHF2: 435–480 MHz)...................................... 7-47.3.1 Parts List ......................................................................................................................... 7-16

Chapter 8 136 – 174 MHz VHF Theory Of Operation.......................... 8-1

8.1 Introduction .................................................................................................................................... 8-18.2 VHF Receiver................................................................................................................................. 8-1

8.2.1 Receiver Front End ........................................................................................................... 8-28.2.2 Receiver Back End ........................................................................................................... 8-2

8.3 VHF Transmitter............................................................................................................................. 8-38.3.1 Power Amplifier................................................................................................................. 8-38.3.2 Antenna Switch ................................................................................................................. 8-38.3.3 Harmonic Filter.................................................................................................................. 8-38.3.4 Auto Power Control........................................................................................................... 8-4

8.4 VHF Frequency Generation Circuitry............................................................................................. 8-48.4.1 Reference Oscillator (12.8 MHz VCTCXO)....................................................................... 8-48.4.2 PLL IC Prescaler and Comparator.................................................................................... 8-5

Table of Contents vii

8.4.3 Voltage Doubler and Charge Pump.................................................................................. 8-58.4.4 Loop Filter ......................................................................................................................... 8-58.4.5 Dual VCO.......................................................................................................................... 8-5

8.5 Keypad........................................................................................................................................... 8-6

Chapter 9 VHF Troubleshooting Tables ............................................. 9-1

9.1 Troubleshooting Table for Receiver (VHF) ................................................................................... 9-19.2 Troubleshooting Table for Synthesizer (VHF) .............................................................................. 9-29.3 Troubleshooting Table for Transmitter (VHF) ............................................................................... 9-39.4 Troubleshooting Table for Board and IC Signals (VHF) ............................................................... 9-4

Chapter 10 VHF Schematic Diagrams, Overlays, and Parts Lists.... 10-1

10.1 Introduction .................................................................................................................................. 10-110.1.1 Notes For All Schematics and Circuit Boards................................................................. 10-110.1.2 Four Layer Circuit Board................................................................................................. 10-3

10.2 Speaker and Microphone Schematic........................................................................................... 10-310.2.1 Speaker and Microphone Parts List................................................................................ 10-3

10.3 Circuit Board/Schematic Diagram and Parts List (VHF: 136–174 MHz)...................................... 10-110.3.1 Parts List ....................................................................................................................... 10-14

Chapter 11 403 – 447 MHz UHF1 Theory Of Operation ..................... 11-1

11.1 Introduction .................................................................................................................................. 11-111.2 UHF1 Receiver ............................................................................................................................ 11-1

11.2.1 Receiver Front End......................................................................................................... 11-211.2.2 Receiver Back End ......................................................................................................... 11-2

11.3 UHF1 Transmitter ........................................................................................................................ 11-311.3.1 Power Amplifier............................................................................................................... 11-311.3.2 Antenna Switch............................................................................................................... 11-311.3.3 Harmonic Filter ............................................................................................................... 11-311.3.4 Auto Power Control......................................................................................................... 11-4

11.4 UHF1 Frequency Generation Circuitry ........................................................................................ 11-411.4.1 Reference Oscillator (12.8 MHz VCTCXO) .................................................................... 11-411.4.2 PLL IC Prescaler and Comparator.................................................................................. 11-511.4.3 Voltage Doubler and Charge Pump................................................................................ 11-511.4.4 Loop Filter ....................................................................................................................... 11-511.4.5 Dual VCO........................................................................................................................ 11-5

11.5 Keypad......................................................................................................................................... 11-6

Chapter 12 UHF1 Troubleshooting Tables ......................................... 12-1

12.1 Troubleshooting Table for Receiver (UHF1) ............................................................................... 12-112.2 Troubleshooting Table for Synthesizer (UHF1) .......................................................................... 12-212.3 Troubleshooting Table for Transmitter (UHF1) ........................................................................... 12-312.4 Troubleshooting Table for Board and IC Signals (UHF1) ........................................................... 12-4

Chapter 13 UHF1 Schematic Diagrams, Overlays, and Parts Lists . 13-1

13.1 Introduction .................................................................................................................................. 13-1

viii Table of Contents

13.1.1 Notes For All Schematics and Circuit Boards ................................................................. 13-113.1.2 Four Layer Circuit Board................................................................................................. 13-3

13.2 Speaker and Microphone Schematic ........................................................................................... 13-313.2.1 Speaker and Microphone Parts List ................................................................................ 13-3

13.3 Circuit Board/Schematic Diagram and Parts List (UHF1: 403–447 MHz).................................... 13-113.3.1 Parts List ....................................................................................................................... 13-13

Appendix A Warranty, Service Support, and Replacement Parts .......A-1

A.1 Scope of Manual ............................................................................................................................A-1A.2 Warranty ........................................................................................................................................A-1

A.2.1 Warranty Period and Return Instructions..........................................................................A-1A.2.2 After Warranty Period .......................................................................................................A-1A.2.3 Piece Parts........................................................................................................................A-2

List of Figures ix

List of Figures

Figure 2-1. Programming/Test Cable (PMDN4077_R)....................................................................... 2-3Figure 2-2. Cloning Cable (PMDN4076_R) ........................................................................................ 2-3Figure 2-3. Wiring of the Connectors.................................................................................................. 2-3Figure 3-1. DC Power Distribution Block Diagram.............................................................................. 3-1Figure 4-1. RX Audio Circuit ............................................................................................................... 4-1Figure 4-2. TX Audio Circuit ............................................................................................................... 4-3Figure 5-1. UHF2 Receiver Block Diagram ........................................................................................ 5-1Figure 5-2. UHF2 Transmitter Block Diagram .................................................................................... 5-3Figure 5-3. UHF2 Frequency Generation Unit Block Diagram ........................................................... 5-4Figure 5-4. Keypad Block Diagram..................................................................................................... 5-6Figure 7-1. Four–Layer Circuit Board: Copper Steps in Layer Sequence .......................................... 7-3Figure 7-2. Speaker and Microphone Schematic ............................................................................... 7-3Figure 7-3. UHF2 (435–480 MHz) Receiver Schematic Diagram....................................................... 7-4Figure 7-4. VCO and PLL Schematic Diagram................................................................................... 7-5Figure 7-5. Transmitter Schematic Diagram....................................................................................... 7-6Figure 7-6. Microprocessor and Keypad Schematic Diagram ............................................................ 7-7Figure 7-7. Audio Power Amplifier and External Audio Schematic Diagram ...................................... 7-8Figure 7-8. Switches and Battery Schematic Diagram ....................................................................... 7-9Figure 7-9. Transmitter Audio Filter and Sub-tone Schematic Diagram ........................................... 7-10Figure 7-10. UHF2 (435–480 MHz) Mainboard Top Side: PCB No. 8431BEACON200..................... 7-11Figure 7-11. UHF2 (435–480 MHz) Mainboard Bottom Side: PCB No. 8431BEACON200 ............... 7-12Figure 7-12. UHF2 (435–480 MHz) Sub Circuit Board Top View: PCB No. 8421BEACON100......... 7-13Figure 7-13. UHF2 (435–480 MHz) Sub Circuit Board Bottom View: PCB No. 8421BEACON100.... 7-14Figure 7-14. UHF2 (435–480 MHz) Keypad Board: PCB No. 8422BEACON100 .............................. 7-15Figure 8-1. VHF Receiver Block Diagram........................................................................................... 8-1Figure 8-2. VHF Transmitter Block Diagram....................................................................................... 8-3Figure 8-3. VHF Frequency Generation Unit Block Diagram.............................................................. 8-4Figure 8-4. Keypad Block Diagram..................................................................................................... 8-6Figure 10-1. Four–Layer Circuit Board: Copper Steps in Layer Sequence ........................................ 10-3Figure 10-2. Speaker and Microphone Schematic ............................................................................. 10-3Figure 10-3. VHF (136–174 MHz) Receiver Schematic Diagram....................................................... 10-1Figure 10-4. VCO and PLL Schematic Diagram................................................................................. 10-2Figure 10-5. Transmitter Schematic Diagram..................................................................................... 10-3Figure 10-6. Microprocessor and Keypad Schematic Diagram .......................................................... 10-4Figure 10-7. Audio Power Amplifier and External Audio Schematic Diagram .................................... 10-5Figure 10-8. Switches and Battery Schematic Diagram ..................................................................... 10-6Figure 10-9. Transmitter Audio Filter and Sub-tone Schematic Diagram ........................................... 10-7Figure 10-10. Receiver Audio Filter and Sub-tone Schematic Diagram ............................................... 10-8Figure 10-11. VHF (136–174 MHz) Mainboard Top Side: PCB No. 8431BEACON400....................... 10-9Figure 10-12. VHF (136–174 MHz) Mainboard Bottom Side: PCB No. 8431BEACON400................ 10-10Figure 10-13. VHF (136–174 MHz)Sub Circuit Board Top View: PCB No. 8421BEACON100 .......... 10-11Figure 10-14. VHF (136–174 MHz)Sub Circuit Board Bottom View: PCB No. 8421BEACON100..... 10-12Figure 10-15. VHF (136–174 MHz) Keypad Board: PCB No. 8422BEACON100 .............................. 10-13Figure 11-1. UHF1 Receiver Block Diagram ...................................................................................... 11-1Figure 11-2. UHF1 Transmitter Block Diagram .................................................................................. 11-3Figure 11-3. UHF1 Frequency Generation Unit Block Diagram ......................................................... 11-4Figure 11-4. Keypad Block Diagram................................................................................................... 11-6Figure 13-1. Four–Layer Circuit Board: Copper Steps in Layer Sequence ........................................ 13-3Figure 13-2. Speaker and Microphone Schematic ............................................................................. 13-3Figure 13-3. UHF1 (403–447 MHz) Receiver Schematic Diagram..................................................... 13-1

x List of Figures

Figure 13-4. VCO and PLL Schematic Diagram ................................................................................. 13-2Figure 13-5. Transmitter Schematic Diagram..................................................................................... 13-3Figure 13-6. Microprocessor and Keypad Schematic Diagram .......................................................... 13-4Figure 13-7. Audio Power Amplifier and External Audio Schematic Diagram .................................... 13-5Figure 13-8. Switches and Battery Schematic Diagram ..................................................................... 13-6Figure 13-9. Transmitter Audio Filter and Sub-tone Schematic Diagram ........................................... 13-7Figure 13-10. UHF1 (403–447 MHz) Mainboard Top Side: PCB No. 8431BEAUHF300 ..................... 13-8Figure 13-11. UHF1 (403–447 MHz) Mainboard Bottom Side: PCB No. 8431BEAUHF300 ................ 13-9Figure 13-12. UHF1 (403–447 MHz) Sub Circuit Board Top View: PCB No. 8421BEACON100 ....... 13-10Figure 13-13. UHF1 (403–447 MHz) Sub Circuit Board Bottom View: PCB No. 8421BEACON100.. 13-11Figure 13-14. UHF1 (403–447 MHz) Keypad Board: PCB No. 8422BEACON100 ............................ 13-12

List of Tables xi

List of Tables

Table 1-1. Lead Free Solder Wire Part Number List ......................................................................... 1-3Table 1-2. Lead Free Solder Paste Part Number List ....................................................................... 1-3Table 2-1. Recommended Test Equipment....................................................................................... 2-1Table 2-2. Service Aids ..................................................................................................................... 2-2Table 3-1. Voltage Regulators........................................................................................................... 3-2Table 4-1. Radio Memory Requirements........................................................................................... 4-4Table 6-1. Troubleshooting Table for Receiver (UHF2) .................................................................... 6-1Table 6-2. Troubleshooting Table for Synthesizer (UHF2)................................................................ 6-2Table 6-3. Troubleshooting Table for Transmitter (UHF2) ................................................................ 6-3Table 6-4. Troubleshooting Table for Board and IC Signals (UHF2)................................................. 6-4Table 9-1. Troubleshooting Table for Receiver (VHF)....................................................................... 9-1Table 9-2. Troubleshooting Table for Synthesizer (VHF) .................................................................. 9-2Table 9-3. Troubleshooting Table for Transmitter (VHF)................................................................... 9-3Table 9-4. Troubleshooting Table for Board and IC Signals (VHF)................................................... 9-4Table 12-1. Troubleshooting Table for Receiver (UHF1) .................................................................. 12-1Table 12-2. Troubleshooting Table for Synthesizer (UHF1).............................................................. 12-2Table 12-3. Troubleshooting Table for Transmitter (UHF1) .............................................................. 12-3Table 12-4. Troubleshooting Table for Board and IC Signals (UHF1)............................................... 12-4

xii Notations Used in This Manual

Notations Used in This ManualThroughout the text in this publication, you will notice the use of the following notations. These notations are used to emphasize that safety hazards exist, and due care must be taken and observed.

Note An operational procedure, practice, or condition that isessential to emphasize.

CAUTION indicates a potentially hazardous situation which, if not avoided, might result in equipment damage.

Summary of Printed Circuit Boards and Bands Available xiii

Summary of Printed Circuit Boards and Bands AvailableTable below lists all the bands available in this manual.

Frequency Band

Bandwidth Power Level PC Board Part Number Board Revision

Chapter

UHF2 435 – 480 MHz 1W or 4W 8431BEACON200 2 7

UHF2 – – 8421BEACON100 1 7

UHF2 – – 8422BEACON100 1 7

VHF 136 – 162 MHz 1W or 5W 8431BEACON400 4 10

VHF – – 8421BEACON100 1 10

VHF – – 8422BEACON100 1 10

UHF1 403 – 447 MHz 1W or 4W 8431BEAUHF300 3 13

UHF1 – – 8421BEACON100 1 13

UHF1 – – 8422BEACON100 1 13

xiv

Notes

Chapter 1 Maintenance

1.0 IntroductionThis chapter of the manual describes:

• Preventive maintenance• Safe handling of CMOS devices• Repair procedures and techniques

1.1 Preventive MaintenancePeriodic visual inspection and cleaning is recommended.

1.2 InspectionCheck that the external surfaces of the radio are clean, and that all external controls and switches are functional. It is not recommended to inspect the interior electronic circuitry.

1.3 CleaningThe following procedures describe the recommended cleaning agents and the methods to be used when cleaning the external and internal surfaces of the radio. External surfaces include the front cover, housing assembly, and battery case. These surfaces should be cleaned whenever a periodic visual inspection reveals the presence of smudges, grease, and/or grime.

The only recommended agent for cleaning the external radio surfaces is a 0.5% solution of a mild dishwashing detergent in water. The only factory recommended liquid for cleaning the printed circuit boards and their components is isopropyl alcohol (100% by volume).

1. Cleaning External Plastic SurfacesThe detergent-water solution should be applied sparingly with a stiff, non-metallic, short-bristled brush to work all loose dirt away from the radio. A soft, absorbent, lintless cloth or tissue should be used to remove the solution and dry the radio. Make sure that no water remains entrapped near the connectors, cracks, or crevices.

NOTE The Servicing of your Intrinsically Safe Radios.In order to maintain compliance, radios that are FM Approved to intrinsically safestandards MUST be repaired at FM audited service centers. See Further Assistance FromMotorola on page 1-2 for more information.

NOTE Internal surfaces should be cleaned only when the radio is disassembled for servicing orrepair.

CAUTION: The effects of certain chemicals and their vapors can have harmful results on certain plastics. Aerosol sprays, tuner cleaners, and other chemicals should be avoided.

1-2 Introduction

2. Cleaning Internal Circuit Boards and ComponentsIsopropyl alcohol may be applied with a stiff, non-metallic, short-bristled brush to dislodge embedded or caked materials located in hard-to-reach areas. The brush stroke should direct the dislodged material out and away from the inside of the radio. Make sure that controls or tunable components are not soaked with alcohol. Do not use high-pressure air to hasten the drying process since this could cause the liquid to collect in unwanted places. Upon completion of the cleaning process, use a soft, absorbent, lintless cloth to dry the area. Do not brush or apply any isopropyl alcohol to the frame, front cover, or back cover.

1.4 Safe Handling of CMOS and LDMOSComplementary metal-oxide semiconductor (CMOS) devices are used in this family of radios. CMOS characteristics make them susceptible to damage by electrostatic or high voltage charges. Damage can be latent, resulting in failures occurring weeks or months later. Therefore, special precautions must be taken to prevent device damage during disassembly, troubleshooting, and repair. Handling precautions are mandatory for CMOS circuits and are especially important in low humidity conditions. DO NOT attempt to disassemble the radio without first referring to the CMOS CAUTION paragraph in the Disassembly and Reassembly section of the manual.

1.5 General Repair Procedures and Techniques

NOTE Always use a fresh supply of alcohol and a clean container to prevent contamination bydissolved material (from previous usage).

NOTE Environmentally Preferred Products (EPP) (refer to the marking on the printed circuitboards - examples shown below) were developed and assembled using environmentallypreferred components and solder assembly techniques that meet or exceed complianceto the European Union’s ROHS and WEEE directives (Waste Electrical and ElectronicEquipment (WEEE) Directive 2002/96/EC and Restriction of Hazardous Subtances(ROHS) Directive 2002/95/EC). To maintain product compliance and reliability, use onlythe Motorola specified parts in this manual.For the identification of lead (Pb) free assemblies, all EPP products will carry the EPPMarking, shown below, on the printed circuit board (PCB). This marking providesinformation to those performing assembly, servicing and recycling operation on thisproduct, adhering to the JEDEC standard #97. The EPP Marking takes the form of alabel or marking on the PCB.

Introduction 1-3

Any rework or repair on Environmentally Preferred Products must be done using the appropriate lead-free solder wire and solder paste as stated in the following tables:

Parts Replacement and Substitution

When damaged parts are replaced, identical parts should be used. If the identical replacement component is not locally available, check the parts list for the proper Motorola part number and order the component from the nearest Motorola Communications parts center listed in the “Piece Parts” section of this manual.

Rigid Circuit Boards

The family of radios uses bonded, multi-layer, printed circuit boards. Since the inner layers are not accessible, some special considerations are required when soldering and unsoldering components. The through-plated holes may interconnect multiple layers of the printed circuit. Therefore, care should be exercised to avoid pulling the plated circuit out of the hole.When soldering near the connector pins:

• Avoid accidentally getting solder in the connector. • Be careful not to form solder bridges between the connector pins • Closely examine your work for shorts due to solder bridges.

Chip Components

Use the RLN4062 Hot-Air Repair Station for chip component replacement. Adjust the temperature control to 390 °C (735 °F), and adjust the airflow to a minimum setting. Airflow can vary due to component density.

• To remove a chip component:

1. Use a hot-air hand piece and position the nozzle of the hand piece approximately 0.3 cm (1/8") above the component to be removed.

2. Begin applying the hot air. Once the solder reflows, remove the component using a pair of tweezers.

3. Using a solder wick and a soldering iron or a power desoldering station, remove the excess solder from the pads.

Table 1-1. Lead Free Solder Wire Part Number List

Motorola Part

NumberAlloy Flux Type

Flux Content by

Weight

Melting Point

Supplier Part

number

Diameter Weight

1088929Y01 95.5Sn/3.8Ag/0.7Cu RMA Version 2.7-3.2% 217C 52171 0.015” 1lb spool

Table 1-2. Lead Free Solder Paste Part Number List

Motorola Part Number

Manufacturer Part Number Viscosity Type Composition & Percent Metal

Liquid Temperatur

e

1085674C03 NC-SMQ230 900-1000KCPs Brookfield (5rpm)

Type 3 (-325/+500)

(95.5%Sn-3.8%Ag-0.7%Cu) 89.3%

217°C

1-4 Introduction

• To replace a chip component using a soldering iron:

1. Select the appropriate micro-tipped soldering iron and apply fresh solder to one of the solder pads.

2. Using a pair of tweezers, position the new chip component in place while heating the fresh solder.

3. Once solder wicks onto the new component, remove the heat from the solder. 4. Heat the remaining pad with the soldering iron and apply solder until it wicks to the

component. If necessary, touch up the first side. All solder joints should be smooth and shiny.

• To replace a chip component using hot air:

1. Use the hot-air hand piece and reflow the solder on the solder pads to smooth it. 2. Apply a drop of solder paste flux to each pad. 3. Using a pair of tweezers, position the new component in place. 4. Position the hot-air hand piece approximately 0.3 cm (1/8”) above the component and

begin applying heat. 5. Once the solder wicks to the component, remove the heat and inspect the repair. All

joints should be smooth and shiny.

Shields

Removing and replacing shields is recommended to be done with the Air Blower, BOSCH GHG 603 or equivalent.

• To remove the shield:

1. Place the circuit board in the circuit board holder.2. Add solder paste flux around the base of the shield.3. Position the heat-focus head onto the shield.4. Turn on the heater and wait until the shield lifts off the circuit board. 5. Once the shield is off, turn off the heat, and grab the part with a pair of tweezers. 6. Remove the circuit board from the circuit board holder.

• To replace the shield:

1. Add solder to the shield if necessary, using a micro-tipped soldering iron. 2. Next, rub the soldering iron tip along the edge of the shield to smooth out any excess

solder. Use solder wick and a soldering iron to remove excess solder from the solder pads on the circuit board.

3. Place the circuit board back in the circuit board holder. 4. Place the shield on the circuit board using a pair of tweezers. 5. Position the heat-focus head over the shield. 6. Turn on the heater and wait for the solder to reflow.7. Once complete, turn off the heat, raise the heat-focus head and wait approximately one

minute for the part to cool. 8. Remove the circuit board and inspect the repair. No cleaning should be necessary.

Chapter 2

2.1 Test ETable 2-1 l

Motorola Part N

R2600 series or HP 8920A

*R1074A

*R1377A

R1611A

S1339A

*R1013B or

*R1370A

Test Equipment, Service Aids, and Service Tools

quipmentists test equipment required to service the radios.

Table 2-1. Recommended Test Equipment

o. Description Characteristics Application

System analyzer This item will substitute for items with an asterisk (*)

Frequency/Deviation meter and signal generator for wide-range troubleshooting and alignment

Fluke 87 digital multi-meter

True RMS metering, 200 kHz frequency counter, 32-segment bar graph with backlit display

Digital voltmeter is recommended for AC/DC voltage and current measurements

Fluke 85 RF probe 500 MHz, 30 VAC max Use with Fluke 87 digital multi-meter for RF voltage measurements.

AC voltmeter 1 mV to 300 mV, 10 mega-Ohm input impedance

Audio voltage measurements

Dual channel 100 MHz oscilloscope (Agillent)

Two-channel, 100 MHz bandwidth, 200 M sample rate/sec, 2 MB memory/channel

Waveform measurements

RF millivolt meter 100 μV to 3V RF, 10 kHz to 1 GHz frequency range

RF level measurements

SINAD meter or Without RMS audio Receiver sensitivity

SINAD meter with RMS

voltmeter orWith RMS audio voltmeter

measurements

2-2

2.2 ServicTable 2-2 lthese itemequivalent

Note: 1.Use PMDNperform th

Motorola Part No.

PMDN4026_R

PMDN4038_R

PMDN4039_R

PMDN4040_R1

PMDN4041_R

PMDN4044_R

PMDN4053_R

PMDN4076_R

PMDN4077_R

PMDN4079_R

PMDN4080_R

PMVN4161_

PMVN4165_

Test Equipment, Service Aids, and Service Tools: Service Aids

e Aidsists the service aids recommended for working on the EP350 Series Radios. While all of s are available from Motorola, most are standard shop equipment items, and any item capable of the same performance may be substituted for the item listed.

Table 2-2. Service Aids

Description Application

Flat Ceramic Tuning Tools (1.8mm)

Used for tuning the VCO.

Knob Remover/Chassis Opener Used to remove the front cover assembly.

Crab Eye Nut Opener Used to remove the crab eye nut.

Radio Test Box Enables communication between the radio, test equipment and the computer's USB port.

RF Adapter Adapts radio’s antenna port to BNC cabling of test equipment.

T-Head Ceramic Tuning Tool Used for tuning the VCO.

Flat Ceramic Tuning Tools (0.9mm)

Used for tuning the VCO.

Radio to Radio Cloning Cable Allows a radio to be duplicated from a master radio by transferring programmed data from the master radio to the other.

Programming Cable Used to program the radio through Customer Programming Software and Radio Tuner.

GND Plate Interconnects radio’s chassis to RF Adaptor.

Battery Eliminator Interconnects radio to power supply.

Customer Programming Software on CD Rom

Program customer option and channel data.

Tuner on CD Rom Only Motorola Service Centers or Authorized Motorola

4040BR or higher for tuning the EP350 Series radios as PMDN4040AR cannot be used to is function.

Service Dealers can perform this function.

Test Equipment, Se

Programmin

2.5mm

2.5mm

2.5mm stereo >

1RX / TX da

rvice Aids, and Service Tools: Service Aids 2-3

g/Test Cable

Figure 2-1. Programming/Test Cable (PMDN4077_R)

Figure 2-2. Cloning Cable (PMDN4076_R)

stereo

USB connection t

~ 2.5mm stereo stereo

TX_D

RX_D

4, 5, 6

GND

VBUS

D-

D+

D-D+ VBUS1

2

3

USB_CONNECTOR

2

1

GND

To Computor

Figure 2-3. Wiring of the Connectors

2IC : CP2102

ta GND

2-4

Notes

Test Equipment, Service Aids, and Service Tools: Service Aids

Chapter 3 DC Power Distribution

3.1 DC Regulation and DistributionA block diagram of the DC power distribution throughout the radio is shown in Figure 3-1.

Figure 3-1. DC Power Distribution Block DiagramBattery voltage enters at connector J602 and is routed through SW/VOL1 to become SWB+.

This voltage is routed to:

• SW/VOL1• TX power amplifier Q403 (via R417)• APC circuit U401• RX audio power amplifier U601• 5V regulator (U505)• 3.3V regulator (U506)• Voltage divider R153/R154, a microprocessor A/D input which measures battery voltage• Key PCB

Audio filter

LCD Driver

DTMF IC

Digital potentiometer

PLL IC

MCU, EEPROM

TXVB

RX B+

VCO

½ Vcc

VCTCXO

VoltageDoubler

VddRegulator

ChargePump

5V

10V

Low Batt.detector

Key PCB

VddRegulator

AudioAmplifier

3.3V

7.5VBattery

PA

APC

Driver,Pre-driver

Mech SW1

SWB+

3-2 DC Power Distribution: DC Regulation and Distribution

The following regulators are used:

The 5 V source from U505 is applied to:

• RX back end circuitry• RX/TX audio filters• 1/2 VCC generator• VCO power source (Q705, Q706)• RX B+ (Q304)• TXVB (Q407)• VCTCXO

The 5 V source is also applied to transistor switches Q304 and Q407. Q304 is turned on by Q305 when RX_EN (from U101 Pin 71) is high, and supplies the source to mixer, IF IC and LNA. Q407 is turned on by Q408 when TX_EN2 (from U101 Pin 85) is high, and supplies the "TXVB" source to the first transmitter stage Q401 base, Q402 gate, APC power source (U401 Pin 8) and ANT switch (CR401).

The 3.3 V regulated source from U506 is applied to:

• MCU IC U101• EEProm IC U104• DTMF IC U103• Audio processor IC U102• Microphone bias circuitry• And applied to Key PCB (LCD driver power source)

The 10 V source from U507 is applied to Charge Pump.

Table 3-1. Voltage Regulators

Reference No. Description Type

U505 5V regulator TK11250

U506 3.3V regulator TK11233

U507 Voltage Doubler (10V) TC12140

Chapter 4

4.1 RX AuThe RX aspeaker a

4.1.1 Audio pThe RX a

• RX Afrom

4.1.1.1 RX Aud• VR3

sign• RX L

inclu• TX/R

are iproc

• Desto th

RXA1

Audio IN(from IF IC) pin24

Controller Theory of Operation

dio Circuitudio circuit consists of Audio Processor IC, Audio Amplifier, Internal (INT)/External (EXT) nd Sub-Audio Tones System.

Figure 4-1. RX Audio Circuit

rocessor IC (U102)

VR3 Scrambler/Descrambler

De-emphasis Expander VR4 SMF

SVR

IN-

IN+

OUT-

OUT+

Audio Mute control

RX LPF TX/RX HPF

-4 to +3.5dB/-18, -4.5 to +4.5dB/

0.25dB

Audio Processor IC (AK2347)

VR5

Sub audioProgrammable

LPF

To CPU(tone detect)

pin18

pin21

Audio Amp.

U102

U601

Vol1

-6 to +6dB/0.5dB

INT SPK.

EXT SPK.

J601

Sub audioHPF U105-A,B

Comparator

U105-C

0.5dB

udio from Pin 9 of U201 enters to Pin 24 of Audio processor IC.

: An operational amplifier used for gain adjustment of the receive demodulation signal Pin 9 of U201. The gain is unity and it acts as a buffer amplifier.

io Processing: This circuit controls the volume for adjusting the input level of receive demodulation al. Adjustment range: -4.0dB to +3.5dB in 0.5dB steps.PF: Low-pass filter to eliminate high-frequency components higher than 3 kHz which are ded in the receive demodulation signal.X HPF: High-pass filter to eliminate low-frequency components lower than 250 Hz which

ncluded in receive audio signal. This circuit is turned on and off by control register of Audio essor IC.crambler: This circuit inverts the spectrum distribution of receive audio signals with respect e carrier frequency. The carrier frequency is 3.388 kHz or 3.290 kHz.

4-2

• De-ecom

• Expresto

• VR4Adju

• SMFAud

4.1.1.2 RX Ton• Sub

Thisfrequ

• VR5sign

The sub-a(U105-A, sub-tone passed thto micropsignal.

4.1.2 Audio AThe de-em(SW/VOLU601 hasPin 1 is logoes to m

4.1.3 InternalWhen no speaker. Wrest of the

Controller Theory of Operation: RX Audio Circuit

mphasis: This circuit restores the original state of signal of which high-frequency ponent has been emphasized by the pre-emphasis.ander: This circuit expands the signal compressed twice by the Compressor in dB scale to re the original signal state.

: This circuit controls the volume for adjusting the RX output level. stment range: -18.0dB, -4.5dB to +4.5dB in 0.25dB steps.: Smoothing filter to eliminate the high-frequency and clock components generated in the

io processor IC.

e PL/Digital PL Decode Filtering-audio Programmable LPF: Low-pass filter to eliminate components of the RXA1 signal. circuit is controlled by the internal registers and by the audio processor IC for cut-off ency.

: This circuit controls the volume for adjusting the output level from the sub-audio LPF al. Adjustment range: -6.0dB, +6.0dB in 0.5dB steps

udio tone of U102 Pin 18 output pass through switchable high-pass filter U105. This filter B) has 4 different high pass cut-off frequencies which can be selected accordingly to the audio. This filter (U105-A, B) filters the unwanted sub-tone. The tone of U105-B output rough U105-C comparator, which acts as a squaring circuit. This output signal is then sent rocessor Pin 3. The micro-processor then decodes CTCSS and CDCSS from this square

mpphasized audio signal from Pin 21 of audio processor IC passes through volume control

1) and is amplified by U601BTL audio amplifier to a sufficient level to drive a loud speaker. mute/un-mute function controlled by audio-mute control (Pin 83) of CPU. When U601 w, the audio amp goes to active (un-mute) mode. When U601 Pin 1 is high, the audio amp ute mode.

and External Speakerexternal speaker is plugged into J601, the RX audio is passed through to the internal

hen an external speaker is plugged into J601, the internal speaker is cut-off from the circuit and RX audio is passed through the external speaker.

Controller Theory o

4.2 TX AudThe TX asystem. F

VR1(HPF

TXA1

-6 to +4.5d1.5dB

Tone IN(from CPU

pin4

4 Order LPF (Fc=4KHz)

U501-C,D

VR1(HPF)

TXA1

-6 to +4.5d1.5dB

Tone IN(from CPU)

pin4


U501-C,D

f Operation: TX Audio Circuit 4-3

io Circuitudio circuit consists of MIC/External MIC, LPF, Audio processor IC, and TX Sub-tone or UHF1 and UHF2, refer to Figure 4-2. For VHF, refer to Figure 4-3.

Figure 4-2. TX Audio Circuit (UHF1 and UHF2)

) LimiterScrambler/Descrambler Splatter SMF

TX/RX HPF

B/ -9.6 to +3dB/0.2dB


) VR5


LPF

pin17

pin8U102

-6 to +6dB/0.5dB

Fc=300Hz

VR2Pre-Emphasis

Com-pressor

DTA1pin19

To VCO & VCTCXO

2 Order LPF (Fc=300Hz)

U502-A

Mod.Adj,


U501-A,B U508

TX AF Amp.

U502-C

Mic (Audio IN)

Fc=2.55KHz/3KHz

TX/RX HPF


Mic (Audio IN)

Figure 4-3. TX Audio Circuit (VHF)

LimiterScrambler/Descrambler Splatter SMF

B/ -9.6 to +3dB/0.2dB

VR5


LPF

pin17

pin8U102

-6 to +6dB/0.5dB

Fc=300Hz

VR2Pre-Emphasis

Com-pressor

DTA1pin19

To VCO & VCTCXO

2 Order LPF (Fc=300Hz)

U502-A


U501-A,B

Mod.Adj,

U508

TX AF Amp.

U502-C

Fc=2.55KHz/3KHz

4-4

4.2.1 MIC andThe TX athe internexternal jMIC audio

4.2.2 4-order4-order 4

4.2.3 Audio p

4.2.3.1 TX AudTx Audio

• TX Aare u

• VR1Adju

• Com• Pre-

to im• TX/R

are iAud

• Scraresp

• Limlimit the l

• VR2Adju

• Splainclu

• SMFASIC

4.2.3.2 Tx ToneThe encosignal pas

• DTAexte

• Subtrans

• VR5sign

Controller Theory of Operation: TX Audio Circuit

External MICudio enters the radio via the internal MIC or the external MIC jack. When using al MIC, the audio passes through the external jack then rest of the circuits. When using the ack, the audio from the internal MIC is cut-off from the rest of the circuits and the external is passed to the rest of the circuits.

4 kHz Low-Pass Filter (U501-C, D)kHz Low-pass filter to prevent aliasing noise of the ASIC switching cut-off frequency.

rocessor IC (U102)

io Processingfrom Pin 14 of U501-D enters the ASIC at Pin 3, 4 (Internal TX AMP).

1: Operational amplifier for gain adjustment of TX audio signal. R102, R103, C102, C103 sed to set the gain.

(HPF): This circuit controls the volume for adjusting the input level of TX audio signal. stment range: -6.0dB, +4.5dB in 1.5dB stepspressor: This circuit compresses the amplitude of transmit audio signal by 1/2 in dB scale.emphasis: This circuit emphasizes the high-pass frequency component of TX audio signal prove the S/N ratio of the modulation signal. X HPF: High-pass filter to eliminate low-frequency components lower than 250 Hz which

ncluded in transmitter audio signal. This circuit is turned on and off by control register of io Processor IC. mbler: This circuit inverts the spectrum distribution of transmitter audio signals with ect to the carrier frequency. The carrier frequency is 3.388 kHz or 3.290 kHz.iter: Amplitude limiting circuit to suppress frequency deviation in the modulation signal. The level can be adjusted by applying a DC voltage the LIMLV Pin 7. When the pin is left open, evel predetermined within the device is output.: This circuit controls the volume for adjusting the output level on the MOD Pin 8. stment range: -9.6dB to +3.0dB in 0.2dB steps.tter: Low-pass filter to eliminate high-frequency components higher than 3 kHz which are ded in the limiter output signal. The cut-off frequency is 3 kHz.
: Smoothing filter to eliminate the high-frequency and clock components generated in the .
PL/Digital PL Encode Filteringde circuit of CTCSS and CDCSS mixes signals from 4 ports of microprocessor. This mixed ses through ASIC Pin 19, 20 (U102).

1: Amplifier for gain adjustment of sub-audio signal which generated from CPU. Use rnal resistor and capacitor to set the gain. -audio Programmable LPF: Low-pass Filter to eliminate components of DAT1 signal in the mitter. This circuit is controlled cut-off frequency by the internal ASIC registers.

: This circuit controls the volume for adjusting the output level from the Sub-Audio LPF al. Adjustment range: -6.0dB to +6.0dB in 0.5 steps.

Controller Theory o

4.2.4 TX audiThe TX au(U502-C)and passe

4.2.5 TX modTX audio adjustmenTX modul

4.3 MicropThe micro

4.3.1 MemoryRadio opeparametestatus of toff, the opthe micro

4.3.2 ControlPorts Pin high, the indicator i

Pressing asserted.Pin 32, re

4.3.3 InterfacThe radioCPS (Cus(PMDN40connector(data into

4.3.4 StorageInformatiosignaling reprogram

U

U

f Operation: Microprocessor Circuitry 4-5

o amplifier and 6 order 3 kHz Low-Pass filter dio signal from ASIC Pin 8 (UHF1, UHF2) or U508 Pin 4 (VHF) is linked by TX audio amp

to increase limiting range. The limited audio signal is adjusted to a proper level by U508 s through 6 order 3 kHz low pass filter (U501-A,B) before being modulated.

ulation Adjustmentsignal from Pin 8 of U502-C (UHF1, UHF2) or Pin 8 of ASIC (VHF) is linked TX modulation t IC (U508). The TX modulation is tuned in the factory. If any of the TX part is replaced, the

ation must be tuned using Tuner.

rocessor Circuitryprocessor circuitry includes microprocessor (U101) and associated EEPROM.

Usageration is controlled by software that is stored in internal Flash ROM memory. Radio

rs and customer specific information is stored in External EEPROM (U104). The operating he radio is maintained in RAM located within the microprocessor. When the radio is turned erating status of the radio is written to EEPROM before operating voltage is removed from

processor.

and Indicator Interface35 and 36 are outputs which control the Sub-PCB mounted LED indicator. When Pin 35 is indicator is green. When Pin 36 is high, the indicator is red. When both are high, the

Table 4-1. Radio Memory Requirements

Reference No. Description Size

101 Microprocessor Flash ROM 128 Kbyte * 8

RAM 5 Kbyte * 8

104 Serial EEPROM 8 Kbit * 8

s amber. When both are low, the indicator id is off.

the side-mounted PTT button (PB501) provides a low to port Pin 44, which indicates PTT is Side-mounted function buttons 1 & 2 (PB502 and PB503) are connected to port Pin 21 and spectively.

e to USB programming can be programmed, or the programmed information can be read, using a computer with tomer Programming Software) connected to the radio via a USB Programming cable 77A). Connection to the radio is made via the microphone connector (part of accessory J601). The line connects the programming connect (J601 Pin 6) to port PRG/CLONE_RX uP, Pin 34) and PRG/CLONE_TX(data out of uP, Pin 33).

of Customer-Specific Informationn that has been programmed using CPS, such as channel frequencies or selective codes, etc, are stored in the external EEPROM, where it is retained permanently (unless med) without needing DC power applied to the microprocessor.

4-6

4.3.5 SensingPort PTT2accessori

4.3.6 MicroprOn powerprovides aline (U107within the

4.3.7 MicroprThe 7.372

4.3.8 BatteryVarious btype by FEEPROM

Controller Theory of Operation: Microprocessor Circuitry

of VOX operating (Pin 68) is used to detect the presence of VOX operating when externally connected

es with VOX enabled. When port PTT2 is low, the VOX will start to operate.

ocessor Power-on reset Routine-up, the microprocessor is held in reset until the digital 3.3V regulator (U506 Pin 4) stable supply voltage. Once the digital supply reaches steady state and releases the reset Pin 2), the microprocessor begins to start up. After reset release by all circuit, the software

microprocessor begins executing port assignment, RAM checking, and initialization.

ocessor 7.3728 MHz Clock8 MHz clock signal (Pin 13, X-in) is provided from the FL101.

indicatorattery types are available having different capacities. The radio can select different battery PP (Front Panel Programming) or CPS. A voltage divided by R153 and R154. And have a data for each battery types.

Chapter 5 435 – 480 MHz UHF2 Theory Of Operation

5.1 IntroductionThis chapter provides a detailed theory of operation for the radio components. Schematic diagrams for the circuits described in the following paragraphs are located in Chapter 7 of this manual.

5.2 UHF2 ReceiverThe UHF2 receiver design covers the frequency range of 435 – 480 MHz and it is a double conversion super heterodyne with 1st IF 45.1 MHz and 2nd IF 455 kHz. The receiver is divided into two major blocks, Front End and Back End as shown in Figure 5-1.

Figure 5-1. UHF2 Receiver Block Diagram

CrystalFilter

Crystal44.645MHz

1st MixerRF

AmpPreselector

FilterPostselector

FilterRX from

Antenna Switch

Inj FilterFirst LO

from Synthesizer

IFAmp

IFAmpLPF

CeramicFilterDescriminator 455FW

455HW

QuadratureDetector

RSSI

N/S_SW

Recovered Audio

455C24

5-2 435 – 480 MHz UHF2 Theory Of Operation: UHF2 Receiver

5.2.1 Receiver Front EndIncoming RF signals from antenna are first routed through the harmonic filter (L409, L410, L411, C426, C427, C428, C429, C445, C446) and antenna switch (CR301), part of the transmitter circuitry, before being applied to the receiver front end. The receiver front end consists of preselector filter, RF amplifier, post-selector filter and a single-balanced mixer. The preselector filter is a varactor-tuned 2-pole design using discrete elements (L320, L324, C351, C352, C353, C354, C355, C356, C357, C358, C359, C360, C361) in a series/shunt resonator configuration. It is a band-shift filter and the frequency shift is controlled by varactor diodes CR314 and CR307, which are connected to the microprocessor. It is configured to provide steeper attenuation above the passband for improved spurious rejection when low-side local injection is used. The frequency is separated into 8 steps and controlled by CPU (435 – 480 MHz). The output of this filter is matched to the base of RF amplifier Q301 which provides 13dB of gain.The output of the RF amplifier is applied to the post-selector filter. The post-selector filter designed using discrete elements (L322, L323, L328, C379, C354, C355) in a series/shunt resonator configuration. It is a band-shift filter and the frequency shift is controlled by varactor diodes CR313, CR304 and CR305, which are connected to the microprocessor. It is configured to provide steeper attenuation above the passband for improved spurious rejection when low-side local injection is used. The frequency is separated into 8 steps and controlled by CPU (435 – 480 MHz).The output of the post selector is connected to the single-balanced mixer consisting of components L329, L333, Q306 and Q307. 1st local signal generated from VCO is filtered by injection filter (L310, L331, C325, C326, C327) to remove second harmonics. The converted 1st IF frequency at mixer passes through L331 and matches the 45.1 MHz IF signal to pair crystal filter (FL301).

5.2.2 Receiver Back EndThe 1st IF signal is amplified about 15 dB by IF amp Q303. The output of the IF amp is connected to IF IC (U201). 1st IF frequency (45.1 MHz) and 2nd LO frequency (44.645 MHz) are mixed in U201. The second mixer converts the 45.1 MHz high IF frequency to 2nd IF frequency (455 kHz).

Additional IF selectivity is provided by two ceramic filters (CF1, CF2). The wider filter 455 FW is used for 25 kHz channel spacing, and the narrower filter 455 HW is used for 12.5 kHz channel spacing. These two ceramic filters may eliminate undesired signal and demodulated by demodulator in U201. N/S_SW which connected to microprocessor is used to select the wide and narrow band.

The mute (squelch) circuit switches off the audio amplifier when no audio is present. The squelch circuit consists of U201 and U202 and their associated components. The noise signal from Pin 9 of U201 is used to control the squelch circuit sensitivity of U202. The noise passes through filter, and is amplified by internal amp of U201. The amplified noise act as a DC voltage to control the mute system. So if the noise level is under the threshold voltage, the microprocessor (U101) un-mutes the radio. If the noise level is over the threshold voltage, the microprocessor mutes the radio. The squelch level is tuned in the factory. When a component or a part in the RX system is replaced, the squelch must be re-tuned using the Tuner.

435 – 480 MHz UHF2 Theory Of Operation: UHF2 Transmitter 5-3

5.3 UHF2 TransmitterThe UHF2 transmitter covers the range of 435 – 480 MHz. Depending on model, the output power of the transmitter is switchable on a per-channel basis between high power (4 Watts) and low power (1 Watt). The transmitter is divided into four major blocks as shown in Figure 5-2.

• Power Amplifier• Harmonic Filter • Antenna Matching Network• Power Control.

Figure 5-2. UHF2 Transmitter Block Diagram

5.3.1 Power AmplifierThe transmitter power amplifier has three stages of amplification – Pre Driver (Q401), Driver Amp (Q402) and Final Amp (Q403). Signal from TX VCO is applied to the pre driver via an attenuator circuit. The attenuator is pie style resistor attenuator, and is used as isolation between VCO and the power amps. The -4dBm TX RF signal from attenuator is then amplified by pre driver and driver amp to around +25dBm and is applied to the final amp. The final amp (Q403) is an enhancement-mode N-channel MOSFET device providing a gain of 12dB. The device drain current is drawn directly from the DC battery supply voltage input via L413. A matching network consisting of C416 to C420 and a strip line, transforms the impedance to approximately 50 Ohm.

5.3.2 Antenna SwitchAn antenna switch works mainly as a switching device between transmit and receive paths. In transmit mode (PTT), Q407 is turned on and both PIN diodes (CR401, CR301) are forward biased into conduction. This enables the RF signal to pass to the harmonic filter and then to the antenna. In the receiver mode, both diodes are off. Signals applied to the antenna jack are routed via the LPF (harmonic filter), through network L409 to L411, to the receiver input.

5.3.3 Harmonic FilterThe harmonic filter consists of components L409, L410, L411, C426, C427, C428, C429, C430, C445 and C446. The harmonic filter is a seven-pole Chebychev filter.

Attenuator Circuit

Pre DriverAmp

From VCO

DriverAmp

FinalAmp

Power Control

Strip Line

Current Detect

SWB+ BAT+

AntennaSwitchTo Receiver

CR401

Harmonic Filter

Antenna

5-4 435 – 480 MHz UHF2 Theory Of Operation: UHF2 Frequency Generation Circuitry

5.3.4 Auto Power ControlThe APC keeps the current supply constant to the final amp (Q403). The drain current of Q403 (final amp) is sensed across resistor R417. The voltage difference across R417 is amplified through U401 by the ratio of R423 to R417. The differential signal at the output of U401 (Pin 7) is passed to Q404 and Q405 that produces a constant power output to the antenna. If the current is changed due to change of battery voltage or load, APC controls gate voltage of Q403 and collector voltage of Q401 and drain voltage of Q402 to keep TX power stable. This circuit stabilizes TX power at a pre-determined level adjusted by U402. This bias voltage is tuned in the factory. If the transistor (Q403) is replaced, the RF Output Power must be tuned. By tuning the RF output power, the bias voltage will be tuned through U402. Extra care has to be taken during the tuning process. Do not exceed the maximum allowed bias voltage.

5.4 UHF2 Frequency Generation CircuitryThe PLL synthesizer subsystem consists of the reference oscillator (VCTCXO), VCO, PLL IC, Charge Pump and Loop Filter.

Figure 5-3. UHF2 Frequency Generation Unit Block Diagram

5.4.1 Reference Oscillator (12.8 MHz VCTCXO)The reference oscillator is powered by regulated 5V provided by U505. The reference frequency 12.8 MHz VCTCXO (Voltage Controlled Temperature Compensated Crystal Oscillator) is applied to the PLL IC (U701) via Pin 1. Main frequency can be adjusted by chip trimmer of VCTCXO. This frequency provides reference to the PLL IC and has a frequency stability of +/-2.5PPM (max) at the temperature ranging from -30 to +60 Degree Celsius.

ModulatingSignal

FL701

12.8MHzRef.OSC.

ChargePump

LoopFilter

TX VCO

RX OutTo Mixer

To PA DriverTX Out

Circuit

RX VCOCircuit

VoltageDoubler

SynthesizerU701

PLL Datafrom μP

435 – 480 MHz UHF2 Theory Of Operation: UHF2 Frequency Generation Circuitry 5-5

5.4.2 PLL IC Prescaler and ComparatorThe reference frequency from VCTCXO is divided to 6.25 kHz or 5 kHz by reference counter, R. The RF signal input from the VCO is divided to by prescaler (1/64), divided by N and A counters in PLL IC to determine frequency steps and then supplied to the comparator. The comparison frequency is 6.25/5 kHz. The internal phase comparator compares the phase difference between the reference and VCO signal. When the phase of the reference frequency is leading, Pin15 (R) is the output. When VCO frequency is leading, Pin 16 (P) is the output. When P=R, small pulses are the output of the phase detector.

5.4.3 Voltage Doubler and Charge PumpThe voltage doubler (U507) converts 5V to 10V and is applied to the charge pump circuitry. The charge pump is used for charging output signals P, R supplied by PLL IC from 0-3.3V to 0-10V. This voltage is used to drive the VCO.

5.4.4 Loop FilterThe loop filter contains C751, C752, C753, C754, R726, R727, R728. It reduces the residual side-band noise to get the best signal-to-noise ratio. The output signal from loop filter is applied to VCO.

5.4.5 Dual VCOThe dual VCO module contains a RX VCO and a TX VCO. They are configured as colpitts oscillators and connected to power up through transistor switches. Only one VCO is selected at a time. A steering line voltage between 0.35V and 9.7V at varactor CR701 tunes the full RX frequency range from 389.9MHz to 434.9MHz, and varactor CR702 tunes the full TX frequency range from 435MHz to 480MHz.

In Receiver mode, high signal of RX_EN from Pin 71, U101 activates Q305. When Q305 is activated, current flows through the base of Q304 and thus activates the Q705. The varactor CR701 sets the resonance frequency. When there is a change in voltage supplied by loop filter, there is a change in the resonance frequency. L703 is the resonating coil, which forms the tank circuit together with variable cap C710.

In Transmit mode, high signal of TX_EN1 from Pin 84, U101 enables current flows through collector of Q503 and thus activates Q706. The varactor CR702 sets the resonance frequency. When there is a change in voltage supplied by loop filter, there is a change in the resonance frequency. L706 is the resonating tuning coil, which forms the tank circuit together with variable cap C722.

5-6 435 – 480 MHz UHF2 Theory Of Operation: Keypad

5.5 KeypadLeft, Right and P1 to P3 keys are directly connected to microprocessor via 22 pin connector. When any of these keys is pressed, the voltage goes "low" and microprocessor detects it. For full keypad models, the number keys are in matrix type which consisted of 3 rows and 4 columns. When any of these keys is pressed, the voltage goes "low" and microprocessor interprets the voltage for each key press.

Figure 5-4. Keypad Block Diagram

KEYPAD

Left

NUMBERS

RightP1 P2 P3

Key

Key row

Keycolumn

22pi

n co

nnec

tor

Key

pad

boar

d

22pi

n co

nnec

tor

Mai

n bo

ard

MCP

detect

Chapter 6 UHF2 Troubleshooting Tables

6.1 Troubleshooting Table for Receiver (UHF2) Table 6-1. Troubleshooting Table for Receiver (UHF2)

Symptom Possible Causes Procedure Corrective Action

Radio Dead (no turn–on beep, no LED indication)

1. Battery dead or defective

Substitute good battery or battery eliminator

Change or replace battery.

2. Defective battery contacts

Inspect battery contacts for corrosion or bent terminals

Clean/Repair/Replace J602

3. Microprocessor not starting up

Verify clock input to U101 Pin 13 is 7.3728 MHz using high impedance probe.

Verify U101 Pin10(reset) is high.

Troubleshoot/Replace FL101.

If reset is Low, troubleshoot regulator U506 or U107.

4. Regulator fault Verify U506 Pin 4 is 3.3V

Verify U505 Pin 4 is 5.0V

Check for shorts on outputs

Troubleshoot/Repair as needed, replace faulty regulator

5. Flexible Cable fault Check connection of the 12 pin flexible cable between J104 & J105

Re–assemble or replace flexible cable

No RX Audio (with LED indication)

1. Speaker dead or defective

Substitute a good housing (with speaker)

Verify J603 connection

Change the housing (with accessory)


2. Audio Processor IC not starting up

Verify clock input U102 Pin 14 is 3.5795 MHz using high impedance probe.

Troubleshoot/Replace FL102

3. Audio Amp IC notstarting up

Verify U601 Pin 6 is battery voltage.

If battery voltage is being supplied to Pin 6, then verify audio output at Pin 5 & 8.

Troubleshoot/Replace U601

No Receive (with no LED indication)

1. IF IC dead or fault Verify clock input to U201 Pin 1 & 2 is 44.645Mhz using high impedance probe.


No RX 1. RX–B+ Verify Q304’s collector voltage is 4.8V when RX–EN is high.

Check/Replace Q304

6-2 UHF2 Troubleshooting Tables: Troubleshooting Table for Synthesizer (UHF2)

6.2 Troubleshooting Table for Synthesizer (UHF2) Table 6-2. Troubleshooting Table for Synthesizer (UHF2)


Synthesizer Out of Lock (No RX Mode)

1. Defective 12.8 MHz VCTCXO

Verify clock output FL701 Pin 3 is 12.8 MHz using high impedance probe.

Repair/Replace FL701

2. 1/2VCC defective Verify FL701 Pin 1, U502–B Pin 5 & U502–D Pin 14 voltage is 1.9V.

Troubleshoot: 1/2VCC circuitry

3. No RX–Enable Verify U101 Pin 71 (RX–EN1) is high.

Verify Q304 collector voltage is approximately 4.7V in RX mode

Check U101 operating

Troubleshoot: Q304 & Q305 circuitry

4. Check PLL–LD port Verify U101 Pin 27 is Low (Normal Mode)

Verify U101 Pin 27 is swept from low to high (Power Save Mode)

Troubleshoot: PLL circuitry.

Repair/Replace U701

Synthesizer Out of Lock (No TX Mode)






3. No TX–Enable Verify U101 Pin 84(TX–EN1) is high when PTT is pressed.

Verify Q407 collector voltage is approximately 4.7V when PTT is pressed (TX–EN2).


Check U101–Pin 85 is high/Replace Q407/check LK2 is short



Troubleshoot: PLL circuitry

Repair/Replace U701

UHF2 Troubleshooting Tables: Troubleshooting Table for Transmitter (UHF2) 6-3

6.3 Troubleshooting Table for Transmitter (UHF2) Table 6-3. Troubleshooting Table for Transmitter (UHF2)


No internal Mic audio

1. Mic dead or defective Verify audio present (~10mV rms) when speaking into Mic.

Check bias of R194 (3.3V).

Replace Mic.

2. Mic bias fault Verify U101 Pin 78 is 1.1V when PTT button is pressed.

Check/Replace U101




No EXT. Mic audio 1. J601 defective Check connection with EXT mic Check/Replace J601




No transmit (No TX LED indication)

1.PTT switch defective Verify U101 Pin 44 is low when PTT is pressed.

Replace PTT switch PB501

No transmit (TX LED indication OK)

1. Synthesizer out of lock Refer to Table 6-2. Check U101 operating

2. No TX–Enable Verify U101 Pin 84 (TX–EN1) is high when PTT is pressed.


Check U101 Pin 85 is high/

Replace Q407/Check LK2 is short

Low Power 1. Low TX injection Check the RF level at Q409 & C449 per schematic.

Troubleshoot Q409 circuitry & VCO bias

2. R417 defective Verify resistance is 0.1 Ohm Replace R417.

3. Incorrect control voltage

Verify Q404 collector voltage is approximately 5.5V in low frequency & high power.

Troubleshoot APC circuitry

Replace Q404

4. Q403 defective (High current)

Verify U401 Pin 7 is near 0V Replace Q403

5. Antenna switch defect Verify CR401 anode voltage is approximately 1.4V

Check/replace CR401 & CR301

6. Harmonic filter defective

Visually inspect componentsC426 – C429, C445, C446, C430

Repair/Replace if necessary

7. Incorrect power tuning (this has to be performed only after item 1-6 has been checked)

Check conducted power Re-tune power using tuner.

Poor TX range (Conducted power OK)

1. Defective or wrong Antenna.

Verify correct antenna is installed.

Try using another antenna.

Replace antenna

6-4 UHF2 Troubleshooting Tables: Troubleshooting Table for Board and IC Signals (UHF2)

6.4 Troubleshooting Table for Board and IC Signals (UHF2) Table 6-4. Troubleshooting Table for Board and IC Signals (UHF2)

IC Designator Pin Pin Function DC Voltage (V) Comments (Condition)

U201(IF IC) 1 Osc1 3.9 44.645 MHz input

2 Osc2 3.3

4 VCC 4.7

9 Audio frequency 1.2

12 RSSI out Approximately 1 At –47dBm(with conducted)

13 N–DET(BUSY) Low At busy

15 GND 0

16 RF input 1 45.1 MHz input

U701(PLL IC) 1 Reference OSC input 1.4 12.8 MHz input

4 VCC 3.3

6 GND 0

7 XF IN 2.2

8 F IN 2.2

12 Power save High

13 GND 0

14 LD_out High If pll unlock is low

15 @P 2.4

16 @R Low

U601 1 Mode (Mute con) 0

(Audio Amp.) 2 SVR 3.8

3 IN+ 3.8

4 IN- 3.8

5 OUT- 3.8

6 VCC 7.5 This voltage depends on Battery

7 GND 0

8 OUT+ 3.8

U103 1 IN+ 1.6

UHF2 Troubleshooting Tables: Troubleshooting Table for Board and IC Signals (UHF2) 6-5

(DTMF decoder) 2 IN- 1.6

3 GS 1.6

4 Vref 1.6

8 OSC1 1.6 3.579545 MHz input

10 VSS 0

11 TOE 3.3

17 STD High At DTMF detecting

18 EST 3.3

19 ST/GT 3.3

20 VDD 3.3

FL701(VCTCXO) 1 VCON 1.9

2 GND 0

3 OSC out osc Generate the 12.8 MHz

4 VCC 5

Q206(N/S SW) E GND 0

B N/S SW 12.5 kHz: Low

C Collector 12.5 kHz: High 25 kHz: Low

Q304 E +5V 5 At RX Mode

B To Q305 collector Low

C RX_B+ 4.7

Q305 E GND 0 At RX Mode

B RX_EN High

C To Q304 base Low

Q503 E GND 0 At TX Mode

B TX_EN1 High

C To Q706 base Low

Q407 E +5V 5 At TX Mode


C TXVB 4.7


B TX_EN2 High

C To Q407 Low

Table 6-4. Troubleshooting Table for Board and IC Signals (UHF2) (Continued)



Q601 E GND 0

B Audio_MUTE_CON Mute: Low

None Mute: High

C Mode Mute: High

None Mute: Low

1. All voltages are measured with a high-impedance digital voltmeter and expressed in volts DC relative to ground (0V).2. Voltages are measured with a DC input voltage of 7.50 + .02 volts DC applied to the battery connector (J602).3. All voltages are measured in the squelched receive mode, unless otherwise indicated.4. Voltages are identical for VHF and UHF models unless otherwise indicated.



Chapter 7 UHF2 Schematic Diagrams, Overlays, and Parts Lists

7.1 IntroductionThis section provides schematic diagrams, overlays, and parts lists for the radio circuit boards and interface connections.

7.1.1 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, resistance values are in Ohms (K = 1000), capacitance values are in nanofarads (nF), picofarads (pF) or microfarads (µF), and inductance values are in nanohenries (nH) or microhenries (µH).

2. DC voltages are measured from point indicated to chassis ground using a Motorola DC multimeter or equivalent. If the board has been removed from the chassis, the transmitter module mounting screws may be used for ground connection. (Note: The antenna nut bracket is connected to ground.) Operating mode dependent voltages are followed by (RX) for receive mode, (TX) for transmit mode, (UNSQ) for unsquelched mode, etc.

3. RF voltages on VHF models are measured with a Fluke model 85 RF probe. The indicated voltages expressed in mV (RF) are DC level readings which correspond approximately 1:1 to the RF voltage level in mV rms. RF voltages in the Receiver Front End and Receiver Back End circuits are measured with an on-channel 1mV (-47dBm) RF signal applied to the antenna jack ANT1/ANT.

4. RF voltages on UHF models are measured both with a high–impedance RF voltmeter having a bandwidth in excess of 500 MHz (levels are expressed in dBm) and with a Fluke model 85 RF probe [levels are expressed in mV (RF)]. These indicated voltages are DC level readings which correspond approximately 1:1 to the RF voltage level in mV rms, and are only approximate for UHF frequency measurements. RF voltages in the Receiver Front End and Receiver Back End circuits are measured with an on-channel 1mV (-47dBm) RF signal applied to the antenna jack ANT1/ANT.

5. Audio voltages are measured with a high-impedance AC rms voltmeter. The indicated voltages are expressed in mV rms. Receive mode voltages are followed by (RX) and are measured with an on-channel signal with 1 kHz modulation at 60% deviation (3 kHz for 25 kHz channels, or 1.5 kHz for 12.5 kHz channels). Transmit mode voltages are followed by (TX) and are measured with a 1 kHz, 10 mV rms signal present at the external microphone input (accessory connector J601).

7-2 UHF2 Schematic Diagrams, Overlays, and Parts Lists: Introduction

6. Reference Designators are assigned in the following manner:

7. Circuit Block Interconnection Legend:

Ref. No. Series Circuit Block

101 – 199 Microprocessor & audio control circuits


201 – 299 IF IC circuit

301 – 399 Front-end and 1st Mixer

401– 499 Transmit RF stage & Auto power control

501 – 599 Base band & generating circuit

601– 699 Audio amplifier

701– 799 VCO & PLL Synthesizer

Name Description

+5V 5 Volts (Regulated)

+3.3V 3.3 Volts (Regulated)

SWB+ Switched Battery Voltage

BAT+ Unswitched Battery voltage

+10V Digital 10V(Regulated)

RESET Low-line reset signal fromU107 to U101 Pin 10

TX_EN1 Transmit enable signal from U101 Pin 84


TXVB TX operating voltage

TX_AF3 TX audio signal from audio processor IC to TX Audio filter

TX_SUB_TONE TX sub tone signal from audio processor IC to TX modulation.

RX_B+ RX operating voltage

RSSI RX signal strength indication from IF IC to U101

Busy RX detect signal from IF IC to U101

FTV RX frequency shift voltage

RX_AF1 RX audio signal from IF IC to Audio processor IC

PLL_LD PLL lock detect signal from PLL IC to U101

N/S SW Channel space selectable Switch (12.5 kHz/25 kHz)

1/2VCC 1.9 volts (divided by U502-D)

UHF2 Schematic Diagrams, Overlays, and Parts Lists: Speaker and Microphone Schematic 7-3

7.1.2 Four Layer Circuit Board

Figure 7-1. Four–Layer Circuit Board: Copper Steps in Layer Sequence

7.2 Speaker and Microphone Schematic

Figure 7-2. Speaker and Microphone Schematic

7.2.1 Speaker and Microphone Parts List

ReferenceDesignator Motorola Part No. Description

MIC1 PMDN4139_R Microphone

SPK1 PMDN4067BR Speaker & Cable

Plating (Au)

PSR inkCopper PlateCopper

Copper

Copper

CopperCopper PlatePSR ink

PrePreg.

CCL (core)

PrePreg.

MIC1

SPK1

1

2

1

2

MATES WITH J103 ONRADIO BOARD


7-4 Circuit Board/Schematic Diagram and Parts List (UHF2: 435–480 MHz)

7.3

Figu

FL201645MHz

RX_EN

+5V

8

CR306KDS160E

C3390.1uF(K)

R317180K

R3183.3K

DEC1455 C24(LCP)

R3193.3K

R342NA

C381 NA

C3420.1uF(K)

BUSY

RSSI

RX_AF1

N/S_SW

Q201KRC404

20KHZ_SEL

SQ_U/D

SQ_CS

C2110.1uF(K)

C340 0.1uF(K)

R315DS160E

C20147pF

C2130.1uF(K)

R2581.5K

R21710K

R20422K

R20610K

R20722K

R203 22K

R210120K

1

11 10 9

2

12

4

14

3

13

6

16

RF_

IN

GN

D

N_R

EC

N_D

ET

RS

SI

IF_O

UT

QU

AD

AF_

OU

T

OS

C1

OS

C2

VC

C

MX

OU

T

R21

6

10

k

IF_I

N

DE

CO

FIL_

O

FIL_

IN

5

15

87 C2060.1uF(K)

C2070.1uF(K)

C34156pF

C203120pF

CR201KDS181

CF1

CR202KDS181

R25010K

R21115K

R21233K

RT20110K(TH)

R2133.3K

R208 12K

Q202NA

U202

VDD U/D

VSS NC

BA

W CS/

+3.3V

MCP4011(502)

1

2

3

4

8

7

6

5

R2205.6K

Q207KRC404

CF2C2080.1uF

C210330pF

C209330pF

Q206KRC404

C2140.1uF

455FW

455HW

U201TA31136

343.1uF

C344470pF

C3820.1uF

3054

Circuit Board/Schematic Diagram and Parts List (UHF2: 435–480 MHz)

re 7-3. UHF2 (435–480 MHz) Receiver Schematic Diagram

C3015pFFROM_HARMONIC_FILTER

C30718pF

C3604pF

R30256K

R320100R

RX_B +

RX_B +

820nH

FROM_RX_VCD

C3033pF

C32712pF

C36527pF

C369NA

R338100R

R311330R

R315100R

L327820nH (1608)

44. Q303

2SC4226

R312150K

L340820nH(1608)

L332820nH (1608)

C367220pF

C36810nF

C3282pF

C32910nF

FL30145.1MHz(SMF - 1) 8.5K

C33039pF

C3760.1uF

C377 NA

C204 0.1uF

1 4

5 2 3

C33210pF

C331 9pF

C370NA

Q3072SK711

L333B4F(1664)

C36433pF

6

6

4

4

1

1

2

23

3

L3348.2nH Q306

2SK711

L306EJPS

L329B4F(1667)

C3263pF

C32533pF

L325220nH(1608)

C35756pF

C36122pF

R323100K

R330100K

CR309KDS114E

Q3012SC4226

CR310KDS114E

CR313 KDV154E

CR307KDV154E

CR314KDV154E

L32422nH EJPS

L32022nH EJPS

L33033nH

L331OR

L31018nH EJPS

C35110pF

C3100.1uF

C3093pF

C31215pF

L30439nH

L321N / A

C356 NA

C362 10pF

C37233pF

C37320pF

C37920pF

C35410pF

R332100K

FTV

R333100K

C375 NA

C35515pF

CR305KDV154E

C35815pF

L32222nH

L32318nH

CR304KDV154E

C304OR

C37410pF

C31815pF

L32818nH EJPS EJPS

EJPS

C363NA

R334100K

R309100R

R3104.7K

R3352.2K

R3361K

R337100R

RX_B +

C

B

E

C31910nF

+C32010uF / 16V(A)

C38047pF

C37810uF / 16V(A)

C3341nF

+C3347nF

R314100R

C33710nF

CR312KDS160E

CK

C3470.1uF

Q305KRC404

R316100K

C0

KRAQ30

Circuit Board/Schematic Diagram and Parts List (UHF2: 435–480 MHz) 7-5

Figure 7-4. VCO and PLL Schematic Diagram

6L

CR703KDV154E

CR702KDV154E

SH102

SH101

R71330K

R712100K

L7052.2uH(1608)

R711100K

C7511uF / 35V

C7520.1uF(K)

C51610uF / 16(A)

R50512K

+R50447K

C7491uF(1608)

C75347nF(3216)

C75447nF(3216)

Q708KTA2014

Q710KTC4075

R725100R

R7263K

R7401.5K

R7272.7K

+

R7282.7K

C722 6pFTZY02

C72411pF

C725470pF

C7261pF

C7272pF

C7230.5pF

04.7K (1%)

L70330113TL

R7034.7K (1%)

C710 6pF

C7094pF

C71113pF

TZY02

L

702

2.2u

H(16

08)

CR701KDV154E

C712470pF

R7021.5K

+5V

RX_EN

TX_EN1

VCO_OUT(TX)

C53810nF

Q705KRA305

Q706KRA305

E

B

C

Q7022SC4226

Q7012SC4226

C7041nF

C705 2pF

C706 3pF

L704220nH(1608)

R705220R

R7071.5K

R7084.7K (1%)

R7096.8K (1%)

L7030103T

L70827nH

L707220nH(1608)

Q7032SC4226

Q7042SC4226

C7213pF

C717 3pF

C718 4pF

C716470pF

C729 6pF

R71456R

R715 56R

C7302pF

C7550.1uF(K)

C731 2pF

R7351K

R7361K

R7371K

R73033K

R729100K

Q711KRA304

C719 7pF

C7480.1uF

C57547pF

1 / 2VCC

C5150.1uF

U502-BNJM324

R50610K

R50356K

R7330R

R73410R

R732 10K

8 7 6 5 4 3 2 1

9 10 11 12 13 14 15 16

FIN

CLK

DATA LE PS ZC

LD_F

OUT @

P

@R

OSC

IN

OSC

OUT

VPVCC

DOGND

XFIN

U701MB15E03L

PLL_PS

PLL_CLK

PLL_LD

PLL_DATAPLL_STB

C7387pF

C739 1nF

C756 1nF

C747 10pF

C746 10pF

L70922nH

C7400.1uF

C7410.1uF

R73110R

+3.3V

+5V

76

3

21

FL701

12.8MHZ

VCC

VCXO

VCON GND

OUT4

5

Q707KTC4075

Q709KTA2014

C7500.1uF

R7187.5K

R7191K

R7231K R724

390R

R71710R

R716300R

R720

R721

R722

150R

150R

10K

+10V

+3.3V

R710220R

C7079pF

R7 4

C71522uF / 10V(A)

C7141nF

C70122uF / 10V(A)

R70156R

C7021nF

C728 4pF

+

+

+L70127nH

R706100R

C53910uF / 16V(A)

VCO_OUT(RX)

+3.3V


Figu

C469 0.1uF

+3.3V

C470 47pF

C473 47pF

TX_PWR_CS

TX_PWR_U/D

TX_PWR_LOW

C439 1nF

Q408 KRC404

C472 470pF

C471 0.1uF

Q407 KRA305

C438 NA

37 uF

XVB

TX_EN2

FROM_VCO

TX_VCO_B+

LK2

+5V

C

B

E

C467 470pF

+

R405 1.5K

R404 8.2K

R403 180R R401

180R

R402 39R

406 2R

R413 8.2K

C464 47pF

C406 0.1uF

SWB+

C463 470pF

C403 470pF

C402 10nF

05 pF

C404 56pF

L402 22nH(1608)

L401

27

nH(1

608)

Q401 PBR951 C401

3pF

C444 NA

R436 100R

R435 150R

Q409 2SC4226

C440 470pF

C449 3pF

L407 33nH C465

470pF

C447 3pF

C448 10nF

R434 33K

R441 0R

re 7-5. Transmitter Schematic Diagram

C431 1nF(1608)

C428 6pF(1608)

C429 5pF(1608)

C426 6pF(1608)

C427 4pF(1608)

C445 3pF(1608)

C446 4pF(1608)

C430 NA

Zo = 50 0.8t * 1.4(W)

L301 45145TL

L410 45143TL

1

2

ANT1 ANT

L409 451443TL

L411 45143TL

R416 47K(1608)

SH105

CR311 NA

TO_RX

CR301 KDS114

C422 12pF(1608)

C41815pF(1608)

C45233pF(1608) SH103

Q4032SK3476

R415 220R(2012)

L412

22

0nH

(106

8)

C42

0

10pF

(160

8)

C41

9

NA

(160

8)

C45

1 3

pF(1

608)

C

417

12p

F(16

08)

C41

6 7

pF(1

608)

C423 NA(1608)

C466 470pF

C468 0.5pF

MA4P7001F-1072

CR401

L413 35167L

L405 6.8nH(1608)

C413 27pF(1608)

R418 220K(0.5%)

R419 220K(0.5%)

R421 68K(0.5%)

R422 68K(0.5%)

R417 RLC63 0R1

C453 470pF

C460 47pF

C461 220pF

C432 1nF

C454 22uF/16V(B)

C434 470pF

C433 NA

060031MA005G500PL

BAT+

BAT+

J602

+

+

- 2 1

3

U401-A KIA358

GND R420 4.7M

R423 3.9M

R425 3.9K

R424 12K

R430 100R

L406 220nH(1608)

C436 0.1uF

7

8 1 U402

U/D VDD

NC VSS

B

CS/ W

A

2

3

4

6

5

R426 4.7K

R431 10K

R433 0R

MCP4011(502)

Q406 KRC404

C40.1

T

7

47nF C435

R427 220K 6

5

4

8

R432 27K

R429 3.6K

R428 100R

+

-

U401-B KIA358

U401-C KIA358

+ -

C409 NA(1608)

C411 NA

Q402 2SK3078

R414 1K

R411 560R

Q405 KTC4075

R412 1K

R440 15K

R409 10R R410

10R

R408 2.2K 2

R407 4.7K

R2

Q404 STB1188

C46233F

C408 10nF C4

56C410 27pF(1608)

L403 33nH(1608)

1

3


Figure 7-6. Microprocessor and Keypad Schematic Diagram

C10

35

4

7pF

C10

34

4

7pF

C10

36

4

7pF

R115 10K

R193 10K

+3.3V

TP3 TP9 TP6 TP10 TP5 TP2 TP4 TP8 TP1 TP7

220p

F

220p

F

220p

F

220p

F

220p

F

220p

F

220p

F

220p

F

0.1u

F

0.1u

F

C16

1

C17

8

C17

7

C18

9

C18

8

B to

B F

lex.

PC

B

C17

5

C17

6

C17

4

C18

7 C17

9

C16

6 22

0pF

220p

F C

167

C16

8 22

0pF

220p

F

C17

0 22

0pF

220p

F C

171

C17

2 22

0pF

220p

F C

173

C16

5

C16

2

C16

3

C16

4

C10

15

C10

11

C10

10

C10

09

C10

14

C10

13

C10

12

220p

F

220p

F M

IC1

J102

05

004H

R_2

2A01

S

04-6

292-

022-

0 00-

800+

J1

03

220p

F

220p

F

47pF

47pF

47pF

47pF

47pF

47pF

47pF

47pF

47pF

47K

C10

01

C10

02

C10

06

C10

07

C10

08

C10

03

C10

04

C10

05

R15

9

R16

0

R16

1

R19

6

R19

7

R19

8

R19

9

R14

7

47K

47K

47K

47K

47K

47K

47K

47pF

47pF

47pF

47pF

47pF

47pF

C16

9

TONE_IN

MIC1 0B27P40(2.8mm)

R108

R109

R112

R119

1

2

3

4 5 6

7

8 9

# 0 *

4.7K

4.7K

P1

+3.3V

L_ARROW

R_ARROW

P2

P3

4.7K

4.7K

1 2

1 2 3 4 5 6 7

3 4 6 7 5

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

LCD Flex.PCB

05004HR_07C01S(G) J101

Q110

CR110 CR111

CR113 CR112

CR114

CR110~CR115 : BL-HG036

CR115

R155 470R

R156 1K

R157 1K

R158 1K

SH201KRC104

11 11

9 9

10 10

12 12

13 13

14 14

16 16

17 17

19 19 18 18

20 20

22 22 21 21

2

1

15 15

+3.3V

LCD101 LCD_BEACON

SWB+

C10

18

220p

F

+3.3V

R194 10K

C140 47nF

TX_AF1

C141 NA

C142 470pF

+5V

R176 24K

C143 0.1uF

R177 20K

Q120 KRC404

Q121 KRC404

Q122 KRC404

R507 10K

C571 15nF

+3.3V

RT501 10K(TH)

C1016 0.1uF

C

B

E

C

B

E

+3.3V

R1004 10K

R167 100K R1005

10nF BEEP

R1006 NA

C198 NA

R168 100K

KTA 2014 Q112

R163 100K

KTA2014 Q111

SWB+

+ C195 220pF

C194 10uF / 16V R154

47K(1%)

R153 68K(1%)

CR101 NA

LOW_BATT

RX_TONE_EN

C146 15pF

B_S2

FL101 7.372MHZ

C145 15pF

R185 0R

R148 1M

R114 10k

B_S1

A_S2

A_S3

FUN_KEY1

MOD_CON_CS

MOD_CON_U/D

FUN_KEY2

PLL_LD

PROGRAM_DATA

LED(GREEN)

LED(RED) PTT1

+3.3V

R190 15K

R184 15K

R165 3K

DTMF_OUT

DTM

F_C

ON

BE

EP

_CO

N

R18

0

1

00K

PO

P_C

ON

R17

9

5

1K

R18

2

2

00K

R18

3

N

A

TX_P

WR

_CS

TX_P

WR

_LO

W

SQ

_U /

D

DTM

F_S

TEE

R

RX

_EN

20K

HZ_

SE

L

PTT

2

DC

S_S

EL

DTM

F_Q

1

DTM

F_Q

2

DTM

F_Q

3

DTM

F_Q

4

VS

S

SQ

_CS

VC

C2

EP

P_C

LK

EP

P_D

ATA

LIG

HT_

CO

N

BU

SY

PLL

_DAT

A

PLL

_STB

SW_I

N2

SW_I

N1

PLL

_CLK

TON

E4

TON

E3

TON

E_I

NT3

TON

E2

TON

E1

VS

S

CN

VS

S

BE

EP

RE

SE

T

X_O

UT

GN

D

X_I

N

VC

C1

TON

E_I

NT1

B_S

2

B_S

2

A_S

2

A_S

3

FUN

_KE

Y1

PO

P_C

ON

TON

E_I

NT2

MO

D_C

ON

_CS

MO

D_C

ON

_U/D

LCD

_DAT

A

KIA7027AT

+3.3V

R164 100K

R169 1.2K

R175 51K R174 100K

FTV

C1017 470pF R171

10K R172 10K

R173 10K

MIC1

BUSY

Q4 +3.3V

U102_SDATA U102_SCLK U102_CSN

8 VCC

OC A1

A2 SCL

SDA VSS

7

6

5 4

3

2 A0 1

C147 0.1uF(K)

U104 24LC64

R139 10K

Q3

Q2

Q1

STD

U106_SW

PTT2

20KHZ_SEL

PLL_PS

TX_PWR_U/D

BEEP_CON

DTMF_DEC_EN

FREQ_CON3

SW_SCAN1

SW_SCAN2

SW_SCAN3

SW_SCAN4

SW_IN3

DTMF_CON

FREQ_CON2

FREQ_CON1

AUDIO_MUTE_CON

TX_EN1

PTT1

U101

M30302FCPGP

PGM_BUTTON1

PGM_BUTTON2

PGM_BUTTON3

LEFT_BUTTON

RIGHT_BUTTON

LED(RED)

LED(GREEN)

TX_EN2

N/S_SW

PRG / CLONE_RX

PRG / CLONE_TX

FUN_KEY2

AK_DATA

AK_CLK

AK_CSN

DTMF_OUT DTMF_OUT

PLL_LD VOX_EN

VOX_EN

R152

R195 100R

680R

RX_TONE_CON1

RX_TONE_CON2

ANL_SUBTONE_IN

VOX_IN

LOW_BATT_IN

TEMP_IN

A_GND

RSSI_IN

V_REF

A_VCC

LCD_CS

LCD_CLK

MIC_MUTE2

PWDN

RX_TONE_CON1

RX_TONE_CON2

VOX

LOW_BATT

AUDIO_MUTE_CON

TX_EN1 TX_EN2

N/S_SW

RSSI

R178 100K

C123 0.1uF

C124 1uF

R113 47K

U107 C144 0.1uF(K)

+3.3V

RX_TONE_EN

75

1 12

13

14

15

16

17

18

19

20

21

22

23

24

25

2 3 4 5 6 7 8 9 10

11

74

73

72

71

70

69

68

67

66

65

64

63

62

61

60

59

58

57

56

55

54

53

52

51

77

76

78

79

80

81

82

83

84

85

86

87

88

89

90

91

92

93

94

95

96

97

98

2

3

1

99

26

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

27

28

29

100

PLL_CLK

PLL_STB PLL_DATA

RX_EN SQ_CS

SQ_U/D

TX_PWR_LOW

TX_PWR_CS

TX_PWR_U/D


Figu

L18

6

7

5

8+

D

C

T-

08)

06uF

C6010.1uF

SWB+

R6102R2

C6160.1uF(K)

R6152R2

J60353047-0210

C6170.1uF(K)

R6160R

C621330pF

C6090.1uF(K)

C62247pF

L601 2.2uH(1608)

SPK1SM3624X1

J6010980683Z01

L602 2.2uH(1608)

1

+

-

23

4567

re 7-7. Audio Power Amplifier and External Audio Schematic Diagram

C6150.22uF (K)(1608)

SW/VORY841

C619 33pF

R614

4 IN-

IN+

SVR

MODE OUT

TDA8541C6184.7uF / 16V(A)

GN

VC

OU3

2

1

390K(16

U601

AUDIO_MUTE_CON

R623 560R

R1003 10K

R131 10R

RX_AF1 +

+3.3V

R61910K

C620330pF

C6020.22uF(K)

BEEP

C62347pF

C113560pF

C114220pF

R100110K

C11210uF/16V

C103847pF

C1001uF(1608)

R10029.1K

C102647pF

R61315K(1608)

R609 1K R622 0R

R621 39K

C60

54.

7uF

(201

2)

R608NA

R62033K

C60.1

POP_CON

Q602KRC404

Q601KRC404

+

123456789

101112

123456789

101112

J105

0550

4HR

-12B

01S

(G)

J104

XF2

M-1

215-

1A

U10

2A

K23

47

123456789101112C

SN

SD

ATA

VS

S

MO

D

LIM

LV

EX

TIN

O

EX

TIN

TXIN

TXIN

O

AG

ND

AG

ND

IN

SC

LK

TES

T

XIN

XO

UT

VD

D

TSA

OU

T

RS

AO

UT

DIN

DIN

0

RX

OU

T

FILO

RX

INO

RX

IN

13 14 15 16 17 18 19 20 21 22 23 24


Figure 7-8. Switches and Battery Schematic Diagram

+

+ C510 4.7uF(2012)

C572 0.1uF

C512 470pF

C406 0.1uF

C464 47pF R412

1K

Q404TB1188

R413 8.2K

4405K

R614 390K(1608)

8)

R620 33K

C462 33pF

C619 33pF

58)

C606 0.1uF

V(A)

C601 0.1uF

C618 4.7uF / 16V(A)

C463 470pF

C51

1

22uF

/ 16

V(B

) R716,717 +10V

DRIVE_CON

AF_OUT1

AF_OUT2

+5V R734

U501_pin4

Q705,706

Q304

Q407

R171~173

U105_pin4

U502_pin4

+5V

+5V

+5V

+5V

+5V

+5V

+5V

+3.3V

+3.3V

+3.3V

+3.3V

+3.3V

+3.3V

+3.3V

+3.3V

+3.3V

+3.3V

+3.3V

+3.3V

+3.3V

+3.3V

U107_pin1

U106_pin4

R131

R150

U103_pin11,20

U104_pin8

J102_pin16

U101_pin14,96,97

U104_pin1

Q711

R719,722

R507

R537

U508_pin1

1 / 2VCC

C54522uF / 10V(A)

R523 30K(1%)

C533 0.1uF

C531 0.1uF

R524 47K(1%)

NJM324 U502-D

VIN1

1

13-`+`12

14

2

2

3

3

4

4 IN-

IN+

OUT+

OUT-

VCC

SVR GND

MODE

5

5

6

6

7

8

TDA8541

U601

C+

C-

GNDVOUT

SHDN

U507TC1240

+3.3V

+5V

+10V

C529 0.1uF

C530 10nF

J602BAT+

LED(RED)LED(GREEN)

B_S2

10K

47pF

47pF

47pF

47pF

47pF

47pF

47pF

47pF

C57

9

C56

5

C56

2

C56

4

C56

3

C56

1

C56

0

C56

6

C58

0

C58

1

C58

2

C54

0

47pF

47pF

47pF

220p

F

+3.3VSW/VOL1RY8418

SW1RY8487

CR

501

BL-

HE

IG03

3B

R501220R

C501470pF

C506470pF

+

+

Q405KTC4075

Q601KRC404

U506TK11233AMTL

S

R 1 R411

560K

R619 10K

R622 OR

R613 15K(160

R609 1K

R608 NA

R621 39K

R414 1K

C61 0.22uF(K)(160

C605 4.7uF(2012)

C509 470pF

C508 10uF / 16

C541 0.1uF

MUTE_CON

APC(U401_PIN7)

C507 22uF / 16V(B)

C503 0.1uF

U505TK11250AMTL

VOUT

VIN

C502 22uF / 16V(B)

R502220R

Q501KRC404

Q502KRC404

1

1

1

+

1

A

BC

E

BC

1

1

2

2

2

2

C

2

2

3

3

3

3

+

3

3

4

4

4

4

VIN

VOUT

C

4

4

5

5

5

5

5

6

6

6

6

6

7

7

7

8

8

8

9

9

9

1010

1111

1212

R53

2

R53

3

R53

4

R53

5

J105 J104

10K

10K

10K

B_S1A_S2A_S3

SWB+BAT+

060031MA005G500PL

GNDC46047pF

BAT+

C461220pF

L413

1-+3

2 R417RLC63 0R1

R418220K(0.5%)

R4233.9M C433

NA R419220K(0.5%)

C432 1nF

R420 4.7M R421

68K(0.5%) R422 68K(0.5%)

U401-AKIA358

R424

SWB+

SWB+

SWB+

SWB+


Figu

- -+ +

-+

-+

C1022.2nF

6

57

9

108

4

11 NJM324

21

3C1030 47pF

C1033 47pF

C134 0.22uF(K)

C12947nF

C13033nF

C109 22nF

C12847nF

Q102KRC413

Q104KRC413

Q113KRC404

RX_TONE_CON1

U101_PIN3_16_23

U101_PIN100(RX_TONE_EN)

RX_TONE_CON2

uF

C1570.22uF

C1580.22uF

R127

33K

R122330K

R1283.9K

R129150K

U105-E

1 / 2 VCC

+5V

R121330K R149

470K

R133680K

R1321K

R1343.9M

NJM324U105-A NJM324

U105-B

NJM324U105-C

C1026 47pF

C102747pF

C102847pF

C11910nF

C1531uF(K)

U10

2A

K23

47

U103MT88L70

IN+

IN-

GS

VREF

INH

PWDN

NC

OSC1

OSC2

VSS

VDD

ST/GT

EST

STD

NC

Q4

Q3

Q2

Q1

TOE

1

2

1

2

3

3

4

4

5

5

6

6

7

7

8

8

9

9

10

10

11

11

U101_PIN72

C12133nF

R142330K

TONE4

TONE3

TONE2

TONE1

R180

100K

R179

51K R182

200K

R183

NA

U101_PIN66

U101_PIN65

U101_PIN64

U101_PIN63

12

12C

SN

SD

ATA

VS

S

MO

D

LIM

LV

EX

TIN

O

EX

TIN

TXIN

TXIN

O

AG

ND

AG

ND

IN

SC

LK

TES

T

XIN

XO

UT

VD

D

TSA

OU

T

RS

AO

UT

DIN

DIN

0

RX

OU

T

FILO

RX

INO

RX

IN

13

13

14

14

15

15

16

16

17

17

18

18

19

19

20

20 21 22 23 24

C1541uF(K)

C1039 47pF

C10515nF

C1070.1uF(K)

C12015pF

+

U101_PIN79

RX_AF2

C11810uF / 16V

R143 100K

R144 100K

C117 1.2nF

C11527pF C116

27pF

R10110K

R103150K

C10333pF

R10247K

R1460R

R141100K

R14068K

R15112K(1%)

R1161.2K

U101_PIN26(DTMF_IN)

R11847K

C10647nF

C104150pF

C1022 47pF

C1023 47pF

C1019pF(1608)

R1178.2K

+3.3V

+3.3V

R110270K

R15010K(1%)

R145 1M

FL1023.5795MHz

re 7-9. Transmitter Audio Filter and Sub-tone Schematic Diagram

+3.3V

R194 10K C140

47nF

C142470pF

C141NA

TO_VCTCXO & VCOR5083.6K

R509 2.2K

NJM324U501-B NJM324

U501-A

76

5 12-

+

-+

-+

-+

-+

-+

3

R51415K R516

2.2KR51715K

R51520K

C51715nF

C52215nF

C5432.2nF

C5252.2nF

C548NA

C54210nF

C547 2.2nF

C544NA

C52447nF

C523470pF

C62447pF

C5206.8nF

C5185.6nF

C550560pF

C5191.2nF

C1111uF(K)

C1011uF(K)

C57747pF

C52818nF

C191220pF

C103847pF

C1001uF(1608)

C55110uF / 10V(A)

U101_PIN29(CSN)U101_PIN30(CLK)

U101_PIN31(SDATA)

C57947pF

C1024 47pF

C1020 47pF

C1025 47pF

U106TC7S66FU

1 24

C103147pF

C12633nF

Q101KRC413

Q103KRC413

C12747nF

C11022nF

C1560.22

C12547nF

R126 15K

C102947pF

U101_PIN79(DTMF_DEC_EN)

C103747pF

C1021 47pF

C347pF

R51220K

R51015K

R1073.9K

R162820R

C549560pF

U508

MCP4011(503)

1 / 2_VCC

NJM324U502-A

R5184.7K

R5194.7M

R104 47K

10R

R

131

R105 47K

R106 47K

R5201M

R53810K

R536330K

C53615nF

C5372.2nF

R52647K R527

82KR52882K

R541330K

+

47

R521330K

+3.3V

+3.3V

C5211.2nF

NJM324U501-C

NJM324U501-D

NJM324U502-C

R5118.2K

C58347pF

C52718nF

C57647pF(1608)

MOD_CON_U /D

MOD_CON_CS

R539330K

R51310K

1 / 2VCC

1

18

1

+3.3V+3.3V

PTT147K

47K

47K

C57347pF

PB

501

PTT

EV

QP

UD

02K

PB

502

FUN

1E

VQ

PU

D02

K

PB

503

FUN

2E

VQ

PU

D02

K

R54047K

R537 1K

Q504KRC404

Q505KRA305

C57047pF

C57447pF

R530

R529

R531FUN_KEY1

FUN_KEY2

PTT2

CR502NA

TX_AF2

1

1

1

3

3

3

2

2

2

2

2

2

4

4

5

5

6

6

7

7

8

8

VDD

VSSNC

CS/

B

U/D

A

W

913

1214

9

10

10

C5460.1uF(K)

PROGRAM_DATA

C62547pF(1608)

L6042.2uH(1608)

J6010980683Z01

L603

2.2u

H(1

608)

2

1

MIC10B27P40(2.8mm)

1 / 2VCC

+3.3V

VOX

13

1214

NJM324U105-D

VOX_EN

C13910K

C13547pF

C13

80.

22uF

1608

)C1370.1uF(K)

CR117

KDS160E

CR116KDS160E

C1360.1uFC1032

47pF

R1350.1uF(K)

R136100K

R12047K

R1374.7M

R138220K

R111 NA

Q114KRC404


gure 7-10. UHF2 (435–480 MHz) Mainboard Top Side: PCB No. 8431BEACON200
Fi
L602

C602

C616

R615

C623

C573

C469C470

C570

DEC1

R318R317

R342

C381

CR

306

C339

C378

C382

C334

C320

C1017 Q101

C380R316

R314

R213

R208C209

C211

C210

C213R216

R128

C129

C157 C109C130

C128

R149

R129

R122

R121

C574

C206 C

R202

RT201

R212

R210 R211

Q207

Q206

C198R168

R204 R217

CR201

Q112

C134

R163

R169

R164

R138

R133

R135

C139

Q111

C138

C1021

C1039

C1031

C1037

C1019

C135

C137

Q114

R136

C136

C125

C156

C110

C158

C126C127

Q103Q113Q104Q102

R126

R127

C1029

C1030

U105

CR116

CR117

R137

FL102

R220

R203

R250 R206

R207

R134

R132

R111

R165R

167R

1004R

1005R

1006

C204

C208

C1038

C1024

C115

C145

C146

R115

R185

R148

C107

C106R116

R117R118

R110R

145R

146

C105

C104

C1022 C

1023

TP4

TP10

U101

FL101

TP8TP9

TP2

TP6TP5

TP7 J102

TP3

C1027C1026C1025

C116

C1016

C214

U202

PB502

Q202

PB503

C473

C617

C621

C601 C

625C624

R608

R609

R623 R619

R433

U402

Q601Q602PB501

R616

L601

L604

L603 J601

R417

R421 R419R420 C433

C471C472

C435

C438

C411

C463C462

C465

L709 C747

R730R721

R722R723

R724R725

R740R726

R716

R718

R717

C749

C738

R733C

748

C752

R720R731R719

C756C539

SH102

SH103

U701

Q503

C754

C741

C753

C1028 C119C512

C511

C739

C516

C515

R504

U502

R503

R506

R541R521R519R520

C740

C536

C537C530

C545

C531C577

C583C578

C551

C576

TP1

R527

U103

U507

C120R141

R505

R526R528

R523

R524

C533

C528

R734

C510

C572

C121

R142

R140

C751

R728

R727

TP11

C750Q707Q709

Q710 Q708

Q711

C755R729

R735

R736

R737

C746

R732

C538

C468

Q403

C454

R414

RT501

R425

C439

R431

R432

R507

R411

R440R

412C

464C

406R

413Q

405

Q404

C571

R422

R418

C436 C

437 C453

L413

R441

C460C461

LK2Q408

Q407

R426 R427

U401

Q406

R423

R424

C432

C622

J105J603


Figu

C605

C61

8

ANT5R621R620

R622

U601

FL301C

330

C332

C338

C337

CF2 Q201

C112

R1003

U102

R144

R143

C347

C342

R319

R312

R258

C203

C201

C207

C113

C100

C118

C162C163C

142

C140

C141

C123C124R113

R131R184

R180R179R182R183R190

R531

R530R535R534

R533R532R11415

1614

13

R529R152R195

R120

R178

U107

C117

C144

C114

R1001

R1002

R311303

C340

C341

U2011

C331

R338

L340

L332

re 7-11. UHF2 (435–480 MHz) Mainboard Bottom Side: PCB No. 8431BEACON200

ANT4 ANT1

ANT3

L410

L409

L411L301

C429

C445

C466

C422

C420

C417

C434

C409

C408C403C402

C404

C327

C326

C405

C467

C444C448

C447

Q409L407

R435

C401

C449Q401

R408R407

R405

R404R402R403

R401

C410

Q402

L403

L406L405

L402

L310L331

L330

L334

L321

L328

C309

C363C379

R334

R332R333

C357

C303

C361

C351

R323

R330

CR

314

CR307

CR310CR309

C609

C540

C619

C580

C579

C582

C581

C620

C606

C615

R614

R613

R610

CR313

CR304J602

CR

305Q

306Q

307

L306

C329

C369

C377

C376

C319

Q304

Q122

Q305

Q121

C1033

Q120

Q701Q703

Q706

Q704Q702 Q705

CF1C701

C710

L703

C712

C715C714C716C717

C718

C722

CR702

C725

C730C729L708R

707

R706

C702

C711

C709

C705

C719

C702

C704

L701

R703

R710

R708

L707

L706

L705R

713

R712C727

C726

C724

C723C721

R711

CR

703

R70 2 R

701

C707

C706

C728R715R714

R709

C731

SH101

C704

CR701

L704

R315 L327

CR312

CR315

C509

C508

C507

C194

C502

C501

R139

R539

R512C521 C161

C178C179C177

C523R509R508 C517

C544C524C516C525C548C529

C550C519R107

C575

C547C542R517

R518R538

R536

C527

U508

C543

C522

R514

R515

U501C168C167C166

C165 C171 C164

C189

C188

C170

C173C169C172R193

C1034

C1036

C1035

R194

C549

R511

R510

C520

C518

C503

C147

R540

Q504Q505

U104FL701

C546 R513

R537

CR

502

C506

C541

U506

U505

R153C195

C191

R154

C1020

C103

C154

C102R101

R162C101

C111

C1032

C153

CR101

U106 R106R105R104

R150R151R102R103

TP

TPTP

TP

Q

R173R176R

175R

172

R171R

174

R705

R177C143

C344C343

FL20

R335

R310

R309

C328

C370

C368R337C367

L333

C355

C354

C360

C307

C310

R302

R320

C301

C312

L323

Q301L304

L322

C364

C375C373

C372

C318

C358

C374

C362

L325 L320

L324

C356

C304

R336

L329

C325

C365

C440

R436

R434

L401

C413

R430R429R428

R409R410R406

C419

C418

C416

C452

C451

C431 R416

C428

C427

SH

105

C426

C446

C423

C430

CR

301

CR401

R415L412

CR

311

ANT2


12. UHF2 (435–480 MHz) Sub Circuit Board Top View: PCB No. 8421BEACON100

C56

5

C56

6

C560

C561

Figure 7-

R501 R502

CR501

C56

3

C56

4

C56

2

Q501 Q502


Figu

SW / VOL1

re 7-13. UHF2 (435–480 MHz) Sub Circuit Board Bottom View: PCB No. 8421BEACON100

SW1

J104


Figure 7-14. UHF2 (435–480 MHz) Keypad Board: PCB No. 8422BEACON100

C1018

J101

C176C175

C174C187

R155

R199R147C1005

C1004

R196R197R198R161R160R159

C1002C1003

C1006

C1007

R108

R158

R156

8

R109

R112

C1012

C1013C1014

R119

R157

C1015

J103

C10

09C

1010

C10

11Q

110

MIC1

CR110 CR111

CR114 CR115

CR112 CR113

SH201

C100

C1001


7.3.

CiR

C1

C1

C1

C1

C1

C1

C1

C1

C1

C1

C1

C1

C1

C1

C1

C1

C1

C1

C1

C1

C1

C1

C1

C1

C1

C1

C1

C1

3PF

22μF

PF

μF

1μF

22μF

KΩ

3PF

0PF

μF

1μF

PF

PF

1μF

F

F

22μF

22μF

22μF

0PF

0PF

0PF

0PF

0PF

0PF

0PF

0PF

0PF

0PF

0PF

C172 TDK – Chip Cap, 1005 J 220PF



C175 TDK – Chip Cap, 1005 Z 0.1μF









C194 HITACH – Chip Tantal, 10uF–M/16V(A)





C206 TDK – Chip Cap, 1005 K 0.1μF








C301 TDK – Chip Cap, 1005 C 5PF


C304 KAMAYA – Chip Res, 1005 J 0Ω



Circuit Ref. Supplier Supplier Part No. Description

1 Parts List

rcuit ef. Supplier Supplier Part No. Description

00 TDK – Chip Cap, 1608 Z 1μF

01 TDK – Chip Cap, 1005 K 1μF

02 TDK – Chip Cap, 1005 K 2200PF

03 TDK – Chip Cap, 1005 J 33PF




07 TDK – Chip Cap, 1005 K 0.1μF



11 TDK – Chip Cap, 1005 K 1μF

12 HITACH – Chip Tantal, 10uF–M/16V(A)







19 TDK – Chip Cap, 1005 K 10nF



23 TDK – Chip Cap, 1005 Z 0.1μF







C130 TDK – Chip Cap,1005 K 33

C134 TDK – Chip Cap, 1005 K 0.

C135 TDK – Chip Cap, 1005 J 47

C136 TDK – Chip Cap, 1005 Z 0.1



C139 KAMAYA – Chip Res, 1005 J 10

C140 TDK – Chip Cap, 1005 K 47


C143 TDK – Chip Cap, 1005 Z 0.1





C153 TDK – Chip Cap, 1005 K 1μ

C154 TDK – Chip Cap, 1005 K 1μ

















10PF

33PF

27PF

220PF

10nF

33PF

20PF

10PF

0.1μF

–M/

20PF

47PF

0.1μF

3PF

10nF

470PF

56PF

56PF

0.1μF

10nF

27PF

27PF

7PF

12PF

15PF

10PF

12PF

6PF

4PF

6PF

n


C431 TDK – Chip Cap, 1608 K 1000PF











C448 TDK – Chip Cap, 1005 K 10nF





C454 HITACH – Chip Tantal, 22uF–M/16V(B)









C468 TDK – Chip Cap, 1005 C 0.5PF
















C331 TDK – Chip Cap, 1005 D 9PF




















C362 TDK – Chip Cap, 1005 D

C364 TDK – Chip Cap, 1005 J



C368 TDK – Chip Cap, 1005 K




C376 TDK – Chip Cap, 1005 Z

C378 HITACH – Chip Tantal, 10uF16V(A)




C401 TDK – Chip Cap, 1005 C

















Circuit Ref. Supplier Supplier Part No. Descriptio


C4

C4

C5

C5

C5

C5

C5

C5

C5

C5

C5

C5

C5

C5

C5

C5

C5

C5

C5

C5

C5

C5

C5

C5

C5

C5

C5

CiR

μF

μF

3PF

00PF

nF

/

0PF

μF

nF

00PF

/

1μF

00PF

0PF

0PF

/

PF

PF

PF

PF

PF

PF

PF

PF

3PF

μF

PF

PF












C605 TDK – Chip Cap, 2012 Z 475PF






C618 HITACH – Chip Tantal, 4.7uF–M/16V(A)
















02 HITACH – Chip Tantal, 22uF–M/16V(B)






10 TDK – Chip Cap, 2012 Z 475PF



















C531 TDK – Chip Cap, 1005 Z 0.1

C533 TDK – Chip Cap, 1005 Z 0.1




C539 HITACH – Chip Tantal, 10uF–M16V(A)


C541 TDK – Chip Cap, 1005 Z 0.1


















C572 TDK – Chip Cap, 1005 Z 0.1





10PF

10PF

0.1μF

1μF

0.1μF

M/

0.1μF

16 J

16 J

0.1μF

1000PF

47PF

47PF

47PF

47PF

47PF

47PF

47PF

47PF

47PF

47PF

47PF

47PF

47PF

47PF

47PF

0.1μF

470PF

n























CF1 BGTech 8286045500120 TOKO, Ceramic Filter, ELFY455F

CF2 BGTech 8286045500220 TOKO, Ceramic Filter, ELFY455H

CR110 BRIGHT LED – LED DIODE, BL-HG036D-TR







C710 MURATA – Chip Trimmer Cap, 2PIE 6PF

C711 MURATA – Chip Cap, 1005 J 13PF 10V











C724 MURATA – Chip Cap, 1005 J 11PF 10V


















C751 HITACH – Chip Tantal, 1uF–35V(A)


C753 PANASINIC – Film Chip Cap, 32473PF

C754 PANASINIC – Film Chip Cap, 32473PF






















CR

CR

CR

CR

CR

CR

CR

CR

CR

CR

CR

CR

CR

CR

CR

CR

CR

CR

CR

CiR

DV–

DV–

DV–

m)

m)

Filter, 5

O,

N

ON

4HR-

4HR–

292-

-

J105 BGTech 851612A01S110 YUNHO, FPC CONNECTOR, 05004HR–12B01S(G)

J601 BGTech 8500031009800 CHI CHENG, SPK MIC JACK, 0980683Z01–D

J602 BGTech 85100G500PL00 SUYIN, BATTERY CONNECTOR, 060031MA005G500PL

J603 BGTech 8510530470210 MOLEX, CONNECTOR, 53047–0210

L301 DEARIM – Coil Air, 0.45–1.4–5TL

L304 TAIYOYUDEN – Chip Ind, 1005 J 39N

L306 DELTA – Chip Ind, 2012 820NH (Tolerance: 5%)

L310 DELTA – Chip Ind, 2012 18NH

L320 DELTA – Chip Ind, 2012 22nH




L325 TAIYOYUDEN – Chip Ind, 1608 220nH J

L327 TAIYOYUDEN – Chip Ind, 1608 K 820NH


L329 BGTech 8920PT1667020 TOKO, #617PT–1667

L330 TAIYOYUDEN – Chip Ind, 1005 J 33nH

L331 KAMAYA – Chip Res, 1005 J 0Ω


L333 BGTech 8920PT1664020 TOKO, #617PT–1664

L334 TAIYOYUDEN – Chip Ind, 1005 J 8.2nH




L403 TAIYOYUDEN – Chip Ind, 1608 33NJ

L405 TAIYOYUDEN – Chip Ind, 1608 J 6.8nH


1132 BRIGHT LED – LED DIODE, BL-HG036D-TR



116 KEC – SWITCH DIODE, KDS–160E (ESM)


201 KEC – SWITCH DIODE, KDS 181

202 KEC – SWITCH DIODE, KDS 181

301 KEC – SWITCH DIODE, KDS–114

304 KEC – VARIABLE DIODE, KDV–154E (ESM)










401 M/A COM – PIN DIODE, MA4P7001F–1072T


CR501 BRIGHT LED – LED DIODE, BL-HEIG033B-TR

CR701 KEC – VARIABLE DIODE, K154E (ESM)



DEC1 BGTech 8287455C24010 CQ, Descriminator, JTBC455C24 (LCP)

FL101 BGTech 82827R3728M00 SHINSUNG, Crystal,7.3728MHz (H: 2.8m

FL102 BGTech 82823R5795M00 SHINSUNG, Crystal,3.5795MHz (H: 2.8m

FL201 BGTech 828244R645M00 SHINSUNG, Crystal,44.645MHz (SMD)

FL301 BGTech 828645R100220 SHINSUNG, Crystal MCF 45.15S12.B (8.kHz)

FL701 BGTech 8289012R80010 SHINSUNG, VCTCX12.8 MHZ

F–CABLE1

BGTech 8560228005000 SNAGGWA, BEACOFLAT CABLE, FF12–22N080XXA

F–CABLE2

BGTech 8560124005000 SNAGGWA, , BEACFLAT CABLE, FF12–12N040XXA

J101 BGTech 851607C01S110 YUNHO, FPC CONNECTOR, 050007C01S(G)

J102 BGTech 851622A01S110 YUNHO, FPC CONNECTOR, 050022A01S

J103 BGTech 8516220005020 KYOCERA, FPC CONNECTOR, 04-6022-000-800+

J104 BGTech 851612151A110 OMIRON, FPC CONNECTOR, XF2M1215-1A



N

P

P

N

N

FET N–r

n

Q307 BGTech 81492SK711020 2SK711 TOSHIBA FET N–Channel Transistor

Q401 BGTech 8142000951120 PBR 951LT1 PHILIPS BJT NPN Transistor

Q402 BGTech 8149003078021 2SK3078 TOSHIBA FET N–Channel Transistor

Q403 BGTech 8149003476021 2SK3476 TOSHIBA FET N–Channel Transistor

Q404 BGTech 8145001188021 STB 1188 AUK BJT NPN Transistor

Q405 KEC – KTC 4075 BJT NPN Transistor

Q406 KEC – KRC 404 BJT NPN Transistor

Q407 KEC – KRA 305 BJT PNP Transistor


Q409 NEC – 2SC4226 BJT NPN Transistor


















L601 TAIYOYUDEN – Chip Ind, 1608 K 2.2uH






L703 DAERIM – Coil Air, 0.3–1.1–3TL



L706 DAERIM – Coil Air, 0.3–1.0–3TL




LCD101 BGTech 86343208A2020 EVERRVIEW,VBS3208A2–7FWLYA,REV4.0

MIC1 BGTech 8420063215000 BSE, C-MIC, 6.0*2.7/2.2KΩ,2V,-44±3dB, Pin type

PB501 BGTech 8466PUD02K020 PANASONIC, Tack Switch, EVQPUD02K





Q102 KEC – KRC 413 BJT NPNTransistor



Q110 NEC – 2SC4226 BJT NPTransistor

Q111 KEC – KTA 2014 BJT PNTransistor

Q112 KEC – KTA 2014 BJT PNTransistor









Q301 KEC – 2SC4226 BJT NPTransistor

Q303 NEC – 2SC4226 BJT NPTransistor

Q304 KEC – KRA 305 BJT PNPTransistor


Q306 BGTech 81492SK711020 2SK711 TOSHIBAChannel Transisto



Q7

Q7

Q7

Q7

Q7

Q7

Q7

Q7

Q7

R1

R1

R1

R1

R1

R1

R1

R1

R1

R1

R1

R1

R1

R1

R1

R1

CiR

KΩ

7KΩ

KΩ

0KΩ

0KΩ

KΩ

KΩ

KΩ

0KΩ

Ω

Ω

0KΩ

MΩ

μF

0KΩ

MΩ

0KΩ

KΩ

KΩ

0KΩ

0KΩ

0KΩ

0KΩ

Ω

KΩ

Ω

0KΩ

KΩ

KΩ

R152 KAMAYA – Chip Res, 1005 J 680Ω

R153 KAMAYA – Chip Res, 1005 F 68KΩ



R156 KAMAYA – Chip Res, 1005 J 1KΩ

R1572 KAMAYA – Chip Res, 1005 J 1KW











R169 KAMAYA – Chip Res, 1005 J 1.2KΩ















03 NEC – 2SC4226 BJT NPN Transistor

04 NEC – 2SC4226 BJT NPN Transistor

05 KEC – KRA 305 BJT PNP Transistor


07 KEC – KTC 4075 BJT NPN Transistor

08 KEC – KTA 2014 BJT PNP Transistor

09 KEC – KTA 2014 BJT PNP Transistor



01 KAMAYA – Chip Res, 1005 J 10KΩ






07 KAMAYA – Chip Res, 1005 J 3.9KΩ











R118 KAMAYA – Chip Res, 1005 J 47

R1192 KAMAYA – Chip Res, 1005 J 4.






R128 KAMAYA – Chip Res, 1005 J 3.9



R132 KAMAYA – Chip Res, 1005 J 1K



R135 TDK – Chip Cap,1005 K 0.1










R145 KAMAYA – Chip Res, 1005 J 1M





R150 KAMAYA – Chip Res, 1005 F 10

R151 KAMAYA – Chip Res, 1005 F 12



180KΩ

3.3KΩ

3.3KΩ

100Ω

100KΩ

100KΩ

100KΩ

100KΩ

100KΩ

2.2KΩ

1KΩ

100Ω

100Ω

180Ω

39Ω

180Ω

8.2KΩ

1.5KΩ

22Ω

4.7KΩ

2.2KΩ

10Ω

10Ω

560Ω

1KΩ

8.2KΩ

1KΩ

220Ω

47KΩ

12 0.1Ω

n

R418 KAMAYA – Chip Res, 1608 D 220KΩ


R420 KAMAYA – Chip Res, 1005 J 4.7MΩ






















R504 NOBLE – Chip Semi V.R, 3PIE 47 KΩ






































R317 KAMAYA – Chip Res, 1005 J





























R417 ROHM – Chip Res, 1W J 25



R5

R5

R5

R5

R5

R5

R5

R5

R5

R5

R5

R5

R5

R5

R5

R5

R5

R5

R5

R5

R5

R5

R5

R5

R5

R5

R5

R5

R5

R5

CiR

Ω

Ω

KΩ

0KΩ

Ω

KΩ

KΩ

KΩ

0Ω

Ω

KΩ

KΩ

KΩ

0Ω

0Ω

KΩ

KΩ

KΩ

0Ω

0KΩ

0KΩ

KΩ

Ω

Ω

0Ω

Ω

KΩ

Ω
























R1005 TDK – Chip Cap, 1005 K 10nF

RT201 TAIYOYUDEN – Thermistor, 103K

RT501 TAIYOYUDEN – Thermistor, 103K

SH101 BGTech 8860BEACA1010 Shield CAN, VCO

SH102 BGTech 8860BEAC93010 Shield CAN, PLL

SH103 BGTech 8660BEACA4010 Shield CAN, PA

SH105 MOTOROLA PMDN4149AR Finger Strip TX











19 KAMAYA – Chip Res, 1005 J 4.7MΩ

20 KAMAYA – Chip Res, 1005 J 1MΩ


23 KAMAYA – Chip Res, 1005 F 30KΩ

24 KAMAYA – Chip Res, 1005 F 47KΩ

26 NOBLE – Chip Semi V.R, 2PIE 47 KΩ






























R703 KAMAYA – Chip Res, 1005 F 4.7



















ITAL R,

–G–

in PCB, Rev.#P4

y PCB,

n

Note:2: Not for PMUE3144AAL

SH201 MOTOROLA PMDN4151AR Finger Strip–Pair

SPK1 BGTech 8400362424100 SHINMYUNG, Speaker, 24Ω 1.0W 36θ(Connector type)

SW/VOL1

BGTech 84766N992N151 TOKOS, Switch Volume, RY-8418 Rev1

U101 BGTech 81100303RF020 RENESAS, CPU IC, M3030RFCPGP

U102 BGTech 8116AK2347020 ASAHI KASEL, AUDIO LSI, AK2347

U103 BGTech 8192088L70020 ZERLINK, DTMF RECEIVER, MT88L70

U104 BGTech 811324LC64020 MIRCO CHIP, EEPROM IC, 24LC64

U105 JRC – OP AMP, NJM324

U106 BGTech 8135TC7S66020 TOSHIBA, Analog SW IC, TC7S66FU

U107 BGTech 81287027AT020 VOLTAGE DETECTOR, KIA7027AT

U201 BGTech 8125311360020 TOSHIBA, FM IC, TA31136

U202 BGTech 8191401150220 MIRCOCHIP, DIGITAL POTENTIOMETER, MCP4011(502)

U401 KEC – OP AMP (DUAL), KIA358

U402 BGTech 8191401150220 MIRCOCHIP, DIGITAL POTENTIOMETER, MCP4011(502)

U501 JRC – JRC, OP AMP, NJM324

U502 JRC – JRC, OP AMP, NJM324

U505 BGTech 8123011250021 TOKO, REGULATOR IC, TK11250AMTL

U506 BGTech 8123112330020 TOKO, REGULATOR IC, TK11233AMTL

U507 BGTech 8128TC1240020 MICRO CHIP, VOLTAGE DOUBLER, TC1240


U508 BGTech 8191401150320 MIRCO CHIP,DIGPOTENTIOMETEMCP4011(503)

U601 BGTech 811608541T020 PHILIPS, AUDIO AMP,TDA8541

U701 BGTech 810415E03S020 FUJISU, PLL IC, MB15E03SLPFV1BND–EF–6

PCB1 BGTech 8431BEACON200 CAFSYSTEM, MaFR4 4 Layer PCB

KEY PCB1

BGTech 8422BEACON100 CAFSYSTEM, Ke1.2T 2Layer


7-26

Notes

Chapter 8 136 – 174 MHz VHF Theory Of Operation


8.2 VHF ReceiverThe VHF receiver design covers the frequency range of 136 – 174 MHz and it is a doubleconversion super heterodyne with 1st IF 45.1 MHz and 2nd IF 455 kHz. The receiver is divided intotwo major blocks, Front End and Back End as shown in Figure 8-1.

Figure 8-1. VHF Receiver Block Diagram

CrystalFilter

Crystal44.645MHz

1st MixerRF

AmpPreselector

FilterPostselector

FilterRX from

Antenna Switch

Inj FilterFirst LO

from Synthesizer

IFAmp

IFAmpLPF


455HW

QuadratureDetector

RSSI

N/S_SW

Recovered Audio

455C24

8-2 136 – 174 MHz VHF Theory Of Operation: VHF Receiver

8.2.1 Receiver Front EndIncoming RF signals from antenna are first routed through the harmonic filter (L409, L410, L411, C426, C427, C428, C429, C445, C446) and antenna switch (CR301), part of the transmitter circuitry, before being applied to the receiver front end. The receiver front end consists of preselector filter, RF amplifier, post-selector filter and a single-balanced mixer. The preselector filter is a varactor-tuned 2-pole design using discrete elements (L301, L302, L303, L304, C301, C304, C305, C307) in a shunt or series resonator configuration. It is a band-shift filter and the frequency shift is controlled by varactor diodes CR302 and CR303, which are connected to the microprocessor. It is configured to provide steeper attenuation above the passband for improved spurious rejection when high-side local injection is used. The frequency is separated into 6 steps and controlled by CPU (136 – 174 MHz). The output of this filter is matched to the base of RF amplifier Q301 which provides 15dB of gain.The output of the RF amplifier is applied to the post-selector filter. The post-selector filter designed using discrete elements (L307, L308, L309, L311, C315 and C354) in a series/shunt resonator configuration. It is a band-shift filter and the frequency shift is controlled by varactor diodes CR305 and CR307, which are connected to the microprocessor. It is configured to provide steeper attenuation above the passband for improved spurious rejection when low-side local injection is used. The frequency is separated into 6 steps and controlled by CPU (136 – 174 MHz).The output of the post selector is connected to the single-balanced mixer consisting of components L329, L333, Q306 and Q307. 1st local signal generated from VCO is filtered by injection filter (L310, L331, C325, C326, C327, C333 and C365) to remove second harmonics. The converted 1st IF frequency at mixer passes through L331 and matches the 45.1 MHz IF signal to pair crystal filter (FL301).

8.2.2 Receiver Back EndThe 1st IF signal is amplified about 15 dB by IF amp Q303. The output of the IF amp is connected to IF IC (U201). 1st IF frequency (45.1 MHz) and 2nd LO frequency (44.645 MHz) are mixed in U201. The second mixer converts the 45.1 MHz high IF frequency to 2nd IF frequency (455 kHz).

Additional IF selectivity is provided by two ceramic filters (CF1, CF2). The wider filter 455 FW is used for 25 kHz channel spacing, and the narrower filter 455 HW is used for 12.5 kHz channel spacing. These two ceramic filters may eliminate undesired signal and demodulated by demodulator in U201. N/S_SW which connected to microprocessor is used to select the wide and narrow band.

The mute (squelch) circuit switches off the audio amplifier when no audio is present. The squelch circuit consists of U201 and U202 and their associated components. The noise signal from pin 9 of U201 is used to control the squelch circuit sensitivity of U202. The noise passes through filter, and is amplified by internal amp of U201. The amplified noise act as a DC voltage to control the mute system. So if the noise level is under the threshold voltage, the microprocessor (U101) un-mutes the radio. If the noise level is over the threshold voltage, the microprocessor mutes the radio. The squelch level is tuned in the factory. When a component or a part in the RX system is replaced, the squelch must be re-tuned using the Tuner.

136 – 174 MHz VHF Theory Of Operation: VHF Transmitter 8-3

8.3 VHF TransmitterThe VHF transmitter covers the range of 136 – 174 MHz. Depending on model, the output power of the transmitter is switchable on a per-channel basis between high power (5 Watts) and low power (1 Watt). The transmitter is divided into four major blocks as shown in Figure 8-2.

• Power Amplifier• Harmonic Filter • Power Control

Figure 8-2. VHF Transmitter Block Diagram

8.3.1 Power AmplifierThe transmitter power amplifier has three stages of amplification – Pre Driver (Q401), Driver Amp (Q402) and Final Amp (Q403). Signal from TX VCO is applied to the pre driver via an attenuator circuit. The attenuator is pie style resistor attenuator, and is used as isolation between VCO and the power amps. The -3dBm TX RF signal from attenuator is then amplified by pre driver and driver amp to around +28dBm and is applied to the final amp. The final amp (Q403) is an enhancement-mode N-channel MOSFET device providing a gain of 12dB. The device drain current is drawn directly from the DC battery supply voltage input via L413. A matching network consisting of C417, C418, C419, C420, C455 and a strip line, transforms the impedance to approximately 50 Ohm.

8.3.2 Antenna SwitchAn antenna switch works mainly as a switching device between transmit and receive paths. In transmit mode (PTT), Q407 is turned on and both PIN diodes (CR401, CR301) are forward biased into conduction. This enables the RF signal to pass to the harmonic filter and then to the antenna. In the receiver mode, both diodes are off. Signals applied to the antenna jack are routed via the LPF (harmonic filter), through a TX Low Pass Filter (L409, L410, L411, C426, C427, C428, C429, C430, C445 and C446), to the receiver input.


Attenuator Circuit

Pre DriverAmp

From VCO

DriverAmp

FinalAmp

Power Control

Strip Line

Current Detect

SWB+ BAT+


CR401

Harmonic Filter

Antenna

8-4 136 – 174 MHz VHF Theory Of Operation: VHF Frequency Generation Circuitry

8.3.4 Auto Power ControlThe APC keeps the current supply constant to the final amp (Q403). The drain current of Q403 (final amp) is sensed across resistor R417. The voltage difference across R417. The differential signal at the output of U401 (pin 7) is passed to Q404 and Q405 that produces a constant power output to the antenna. If the current is changed due to change of battery voltage or load, APC controls gate voltage of Q403 and collector voltage of Q401 and drain voltage of Q402 to keep TX power stable. This circuit stabilizes TX power at a pre-determined level adjusted by U402. This bias voltage is tuned in the factory. If the transistor (Q403) is replaced, the RF Output Power must be tuned. By tuning the RF output power, the bias voltage will be tuned through U402. Extra care has to be taken during the tuning process. Do not exceed the maximum allowed bias voltage.

8.4 VHF Frequency Generation CircuitryThe PLL synthesizer subsystem consists of the reference oscillator (VCTCXO), VCO, PLL IC, Charge Pump and Loop Filter.

Figure 8-3. VHF Frequency Generation Unit Block Diagram

8.4.1 Reference Oscillator (12.8 MHz VCTCXO)The reference oscillator is powered by regulated 5V provided by U505. The reference frequency 12.8 MHz VCTCXO (Voltage Controlled Temperature Compensated Crystal Oscillator) is applied to the PLL IC (U701) via pin 1. Main frequency can be adjusted by chip trimmer of VCTCXO. This frequency provides reference to the PLL IC and has a frequency stability of +/-2.5PPM (max) at the temperature ranging from -30 to +60 Degree Celsius.

ModulatingSignal

FL701

12.8MHzRef.OSC.

ChargePump

LoopFilter

TX VCO

RX OutTo Mixer

To PA DriverTX Out

Circuit

RX VCOCircuit

VoltageDoubler

SynthesizerU701

PLL Datafrom μP

136 – 174 MHz VHF Theory Of Operation: VHF Frequency Generation Circuitry 8-5

8.4.2 PLL IC Prescaler and ComparatorThe reference frequency from VCTCXO is divided to 6.25 kHz or 5 kHz by reference counter, R. The RF signal input from the VCO is divided to by prescaler (1/64), divided by N and A counters in PLL IC to determine frequency steps and then supplied to the comparator. The comparison frequency is 6.25/5 kHz. The internal phase comparator compares the phase difference between the reference and VCO signal. When the phase of the reference frequency is leading, Pin15 (R) is the output. When VCO frequency is leading, Pin16 (P) is the output. When P=R, small pulses are the output of the phase detector.

8.4.3 Voltage Doubler and Charge PumpThe voltage doubler (U507) converts 5V to 10V and is applied to the charge pump circuitry. The charge pump is used for charging output signals P, R supplied by PLL IC from 0-3.3V to 0-10V. This voltage is used to drive the VCO.

8.4.4 Loop FilterThe loop filter contains C751, C752, C753, C754, R726, R727, R728. It reduces the residual side-band noise to get the best signal-to-noise ratio. The output signal from loop filter is applied to VCO.

8.4.5 Dual VCOThe dual VCO module contains a RX VCO and a TX VCO. They are configured as colpitts oscillators and connected to power up through transistor switches. Only one VCO is selected at a time. A steering line voltage between 0.35V and 9.7V at varactor CR701 tunes the full RX frequency range from 181.1 MHz to 219.1 MHz, and varactor CR703 tunes the full TX frequency range from 136 MHz to 174 MHz.

In Receiver mode, high signal of RX_EN from pin 71, U101 activates Q305. When Q305 is activated, current flows through the base of Q304 and thus activates the Q705. The varactor CR701 sets the resonance frequency. When there is a change in voltage supplied by loop filter, there is a change in the resonance frequency. L703 is the resonating coil, which forms the tank circuit together with variable cap C710.

In Transmit mode, high signal of TX_EN1 from pin 84, U101 enables current flows through collector of Q503 and thus activates Q706. The varactor CR703 sets the resonance frequency. When there is a change in voltage supplied by loop filter, there is a change in the resonance frequency. L706 is the resonating tuning coil, which forms the tank circuit together with variable cap C722.

8-6 136 – 174 MHz VHF Theory Of Operation: Keypad

8.5 KeypadLeft, Right and P1 to P3 keys are directly connected to microprocessor via 22 pin connector. When any of these keys is pressed, the voltage goes "low" and microprocessor detects it. For full keypad models, the number keys are in matrix type which consisted of 3 rows and 4 columns. When any of these keys is pressed, the voltage goes "low" and microprocessor interprets the voltage for each key press.


KEYPAD

Left

NUMBERS

RightP1 P2 P3

Key

Key row

Keycolumn

22pi

n co

nnec

tor

Key

pad

boar

d

22pi

n co

nnec

tor

Mai

n bo

ard

MCP

detect

Chapter 9 VHF Troubleshooting Tables

9.1 Troubleshooting Table for Receiver (VHF) Table 9-1. Troubleshooting Table for Receiver (VHF)










Verify clock input to U101 pin 13 is 7.3728 MHz using high impedance probe.

Verify U101 pin10(reset) is high.



4. Regulator fault Verify U506 pin 4 is 3.3V

Verify U505 pin 4 is 5.0V












Verify clock input U102 pin 14 is 3.5795 MHz using high impedance probe.


3. Audio Amp IC not starting up right

Verify U601 pin 6 is battery voltage.

If battery voltage is being supplied to pin 6, then verify audio output at pin5&8.



1. IF IC dead or fault Verify clock input to U201 pin 1&2 is 44.645 Mhz using high impedance probe.



Check/Replace Q304

9-2 VHF Troubleshooting Tables: Troubleshooting Table for Synthesizer (VHF)

9.2 Troubleshooting Table for Synthesizer (VHF) Table 9-2. Troubleshooting Table for Synthesizer (VHF)




Verify clock output FL701 pin 3 is 12.8 MHz using high impedance probe.


2. 1/2VCC defective Verify FL701 pin 1, U502–B pin 5& U502–D pin 14 voltage is 1.9V.


3. No RX–Enable Verify U101 pin 71 (RX–EN1) is high.




4. Check PLL–LD port Verify U101 pin 27 is Low (Normal Mode)

Verify U101 pin 27 is swept from low to high (Power Save Mode)


Repair/Replace U701



Verify clock output FL701 pin 3 is 12.8 MHz using high impedance probe.

Repair/replace FL701

2. 1/2VCC defective Verify FL701 pin 1, U502–B pin 5 & U502–D pin 14 voltage is 1.9V.


3. No TX–Enable Verify U101 pin 84(TX–EN1) is high when PTT is pressed.



Check U101–pin 85 is high/Replace Q407/check LK2 is short

4. Check PLL–LD port Verify U101 pin 27 is Low (Normal Mode)

Verify U101 pin 27 is swept from low to high (Power Save Mode)


Repair/Replace U701

VHF Troubleshooting Tables: Troubleshooting Table for Transmitter (VHF) 9-3

9.3 Troubleshooting Table for Transmitter (VHF) Table 9-3. Troubleshooting Table for Transmitter (VHF)





Replace Mic.

2. Mic bias fault Verify U101 pin 78 is 1.1V when PTT button is pressed.

Check/Replace U101

3. Audio Processor IC not starting up right




2. Audio Processor IC not starting up right




1.PTT switch defective Verify U101 pin 44 is low when PTT is pressed.



1. Synthesizer out of lock Refer to Table 9-2 Check U101 operating

2. No TX–Enable Verify U101 pin 84 (TX–EN1) is high when PTT is pressed.


Check U101 pin 85 is high/








Replace Q404


Verify U401 pin 7 is near 0V Replace Q403







Check conducted power Re–tune power using tuner.





Replace antenna

9-4 VHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals (VHF)

9.4 Troubleshooting Table for Board and IC Signals (VHF) Table 9-4. Troubleshooting Table for Board and IC Signals (VHF)



2 Osc2 3.3

4 VCC 4.7




15 GND 0



4 VCC 3.3

6 GND 0

7 XF IN 2.2

8 F IN 2.2

12 Power save High

13 GND 0


15 @P 2.4

16 @R Low



3 IN+ 3.8

4 IN- 3.8

5 OUT- 3.8


7 GND 0

8 OUT+ 3.8

U103 1 IN+ 1.6

VHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals (VHF) 9-5


3 GS 1.6

4 Vref 1.6

8 OSC1 1.6 3.579545 MHz input

10 VSS 0

11 TOE 3.3


18 EST 3.3

19 ST/GT 3.3

20 VDD 3.3


2 GND 0


4 VCC 5






C RX_B+ 4.7


B RX_EN High

C To Q304 base Low


B TX_EN1 High

C To Q706 base Low



C TXVB 4.7


B TX_EN2 High

C To Q407 Low

Table 9-4. Troubleshooting Table for Board and IC Signals (VHF) (Continued)


9-6 VHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals (VHF)

Q601 E GND 0


None Mute: High

C Mode Mute: High

None Mute: Low


Table 9-4. Troubleshooting Table for Board and IC Signals (VHF) (Continued)


Chapter 10 VHF Schematic Diagrams, Overlays, and Parts Lists








10-2 VHF Schematic Diagrams, Overlays, and Parts Lists: Introduction












Name Description




















VHF Schematic Diagrams, Overlays, and Parts Lists: Speaker and Microphone Schematic 10-3









Plating (Au)


Copper

Copper


PrePreg.

CCL (core)

PrePreg.

MIC1

SPK1

1

2

1

2



10-1 Circuit Board/Schematic Diagram and Parts List (VHF: 136–174 MHz)

10.

Figu

C3341nF

C3470.1uF

CR306KDS160E

C3390.1uF(K)

KDS160E CR315

U201TA31136

C33847nF

R317120k

C340 0.1uF(K)

R3182.2K

DEC1455 C24

C34147pF

R3193.9K

R3426.8K

OSC

1

OSC

2

MXO

UT

VCC

IF-IN

DEC

O

FIL-

O

FIL-

INAF

-OU

T

QU

AD

IF-O

UT

RSS

I

N-R

EC

GN

D

RF-

IN

N-D

ET

FL20144.645MHZ

C20147pF

C203120pF

R2581.5K

C2130.1uF(K)

R2164.7K

R203 22K

455FW

CF1

CF2455HW

C2080.1uF

Q206KRC404

C214 0.1uF

Q207KRC404

TIGHT_SQ

MCP4011(503)

+3.3V

SQ_U/D

SQ_CS

U202

R217 10K

R206 10K

R207 22K

CR201KDS181

C204 0.1uF

C2060.1uF(K)

C2070.1uF(K) C209

560pF

C211 0.1uF(K)

Q202KRC404

20KHZ_SEL

N/S_SW

Q201KRC404

C342 0.1uF(K)

C381 0.1uF(K)

RX_AF1

BUSY

RSSI

R210 120K

C210 560pF

R250 10K

CR202 KDS181

R204 22K

R21115K

R2221.2K

8

7

6

54

3

2

1 VDD

VSS

A

W CS/

B

NC

U/D

R212 100K

RT20110K(TH)

R213 20K

R208 2K

9

1 2 3 4 5 6 7 8

10111213141516

C337 10nF

CR312KDS160E

R316 100K

3 Circuit Board/Schematic Diagram and Parts List (VHF: 136–174 MHz)

re 10-3. VHF (136–174 MHz) Receiver Schematic Diagram

FROM_HARMONIC_FILTERC301 47P

L326220nH

C35910P

L30227nH

C321NA

L303 12nH

KDV269ECR302

C30510P

C304 20P

C307 15P

R30539k

C31210P

C314 15P

KDV269ECR305

C31515P

L30868nH

L33527nH

L33627nH

RX_B+R315100R

C3760.1uF

R314 100R

+ C37810UF/16V

L327820nH(1608)

R312220K

R311560R

Q3032SC4226

C377 NA

C335 20pF

C316 15P

C31810nF

CR307KDV269E

R307100K

FTV

C322NA

C3131nF

R306100K

C309 N/F

Q3012SC4226

R357 1R

C35610nF

R358 1R

R308150R

L305220nH

L311220nH

C354 9P

C3111nF

C3100.1U

RX_B+

GND

L30922nH

L307 12nH

C30810nF

C33327P

L33082nH

L33147nH

C36547nH L337

22nH

R399 68R

C36810nF

Q3072SK711

Q3062SK711

RX_B+

R30910R

C3286P

L333B4F(1664)

R338 1P

L332820nH

R3101K

C32910nF

L340820nH

C3307p

FL30145.1MHZ(SMF-1)

C331 5P

C332 10pF

1

5 2 3

4

L306820nH EJPS

C369NA

R335 NA

C370 NA

R337 10R

C367220pF

L329B4F(1667) R336

1K

L31047nH

C325 39P

C32612P

6

6

4

4

3

32

2

1

1

C32710nH

L30468nH

R302100K

CR303KDV269E

C3171nF

R301 100K

FTV

VCO

_OU

T (R

X)

Circuit Board/Schematic Diagram and Parts List (VHF: 136–174 MHz) 10-2


C710

C70910pF

TZY02 10pF

CR701KDV300E

C711 33pF

R711100K

C72456pF

L7052.7uH(1608)

C725470pF

CR702KDV300E

TX_AUDIO_AND_SUB_TONE

C7273pFR712

100K

C726 6pF

C7233pF

7222 10pF

SH101

R7272.7K

R7282.7K

C7520.1uF(K)

C75347nF(3216)

C75447nF(3216)

R7262.4K

CR703KDV300E

C712470pF

L

702

2.2u

H(1

608)

L70328116TL

702(1%)

703K(1%)

+5V

+5V

R701

+

+

+

+

100R

KRA305 Q304

C7141nF

L7041uH(1608)

R705180R

C707 27pF

R70410K(1%)

R70647R

CTZY0

L70630146TL

C721 12pF

R7074.7K(1%)

L708220nH

C7293pF

R714100R

C7304pF

C7314pF

C447 5pF

VCO_OUT(TX)

R715100R

SH102

PLL_LD

Q711KRA304

R729100K

R730 33K

C746 20pF

C747 33pF

R7511K

R7521K

R7531K

L70947nH

PLL_STBPLL_DATA

PLL_CLK

PLL_PS

R73210K

+3.3V

+5V

12345678

9 10 11 12 13 14 15 16

C7387pF

R733 0R

FIN

CLK

DAT

AXF

IN

LE PSD

O

VCC

ZC

LD_F

OU

TVP OSC

OU

T@

P

@R

OSC

IN

GN

D

R73110R

C7561nF

R73410R

12.8MHz VCXO4 3

21

FL701

7

U502-BNJM324

RT50247K(TH)

C5150.1uF

R50610K

R503100K

R52230K R504

47K

R50510K

C51610uF / 16V(A)

+

+-

1/2VCC 5

6

VCON

VCC OUT

GNDC7391nF

C7400.1uF

C7410.1uF

U701MB15E03L

C7550.1uF(K)

+3.3V

C71712pF

R70912K(1%)

R71310K

C719 27pFR710

180R

C7491uF(1608)

R71756RR716

680R

C7480.1uF

R71820K

+3.3V

+10V

R7191K

R720 270R

R721 270R

R7401.8K

+ C7511uF / 35V

R725220R

R724820R

R7231.2K

C750 0.1uF

Q707KTC4075

Q709KTA2014

Q710KTC4075

Q708KTA2014

R72222K

L7071uH(1608)

C716470pF

C71812pF

Q703 2SC4226

Q7042SC4226

R70812K(1%)

C71522uF / 10V(A)

C704470pF

Q7022SC4226

C7021nF

C344470pF

C3430.1uF

C380470pF

C31910nF

C32010uF/16V(A)

C53810nF

C53910uF/16V(A)

L701100nH R

3K

R10

C7056pF

C70610pF

Q7012SC4226C728

10pF

C70122uF / 10V(A)

Q705KRA305

Q706KRA305

Q503KRC404

VCO_OUT(RX)

TX_EN1

RX_EN

RX_B+

Q305KRC404 C

B

E


Figu

402

4

3

2

1

VSS

A

/ W

VDD

4011(502) R499 1.5K

TX_PWR_CS

+3.3V

TX_EN2

Q408 KRC404

+5V

Q407 KRA305

C

TXVB

C438 NA

C437 0.1uF

432 7K

B

2

R413 8.2K

SWB+

C406 0.1uF

R406 10R C403

NA

C402 NA

L401 220nH

C404 15pF

C405 20pF

C408 NA

Q401 PBR951

L402 NA

R405 2.7K

C401 5pF

C440 470pF

R436 47R

TX_VCO_B+

L407 220nH

R402 39R

R401 180R

C448 10nF

R435 180R

C447 5pF FROM_VCO

Q7 2SC4226

R434 33K C449 5pF

R403 180R

C444 NA

R404 10K

R407 8.2K

LK2

C439 1nF

TX_PWR_U/D

TX_PWR_LOW


ANT 1 ANT

1

2 C431 1nF(1608)

R416 47K(1608)

SH105

C430 12pF(1608)

L410 35166TL

L409 35166TL

C429 10pF(1608)

C428 22pF(1608)

C426 27pF(1608)

L411 35166TL

C445 9pF(1608)

C446 22pF(1608)

TO_RX

CR3002 NA

Zo = 50 0.8t * 1.4(W)

CR311 NA CR301

MA2S077

L301 68nH(2520)

CR401

MA4P7001F - 1072

C423 NA

L412

1U

H(1

608)

C422 270P

C419 18P

L408 28116TL

C420 5P

L416 45143TL

C417 15P

C455 12P

C418 56P

L415 45143TL

R415 220R(2012) Land

C425 1nF(1608)

C453 470pF

C454 22uF / 16V(B)

R418 220K(0.5%)

C463 470P

C462 0.1uF

R417 RLC63 OR1

J602 060031MA005G500PL

BAT+

BAT+

GND C461

470P

C464 0.1uF

C432 0.1uF R420

4.7M R421 68K(0.5%)

R422 68K(0.5%)

R423 3.9M

R424 12K

1 2

3

U401-A KIA358

R425 2.4K R426

3.9K

Q406 KRC404

R431 47K

U8

7

6

5

U/D

NC

B

CS

MCP

R 4

8

7

R427 47K

C435 10nF

6

R428 100R

R430 100R

C413 30pF

C421 47pF

C410 56pF

R413.9K

Q404 STB1188

Q405 KTC4075

C415 20K

R411 3.3K

R414 4.7K

C411 NA

R410 10R

R409 10R

R408 2.2K

L404 22nH

C409 8P

Q402 2SK3078 3

2

1

L403 220nH(1608) L405

22nH

B401 MPZ1608D101B

B402 MPZ1608D101B

L413 35167TL

Q403 2SK3476

SH103

L406 220nH(1608)

SH104

C434 470pF

R429 3.6K

5

4

KIA358 U401-C

U401-B KIA358

C416 0.1uF

GND

C436 0.1uF

R433 0R

R419 220K(0.5%)

C433 NA

C460 0.1uF

C427 12pF(1608)



TONE_IN

0B27P40 MIC1

2

1

C16

6

220

pF

C17

0

220p

F

C17

1

220p

F

C17

2

220p

F

C17

3

220p

F

C16

5

220p

F

C16

2

220p

F M

IC1

J1

02

0500

4HR

-22A

01S

J

103

04-6

292-

022-

000-

800+

C16

3

220p

F

C16

4

220p

F

C10

15

47p

F

C100

6

47p

F

C100

1

47p

F

R159

47K

R160

47K

R161

47K

R196

47K

R197

47K

R198

47K

R199

47K

R147

47K

C100

2

47pF

C100

3

47p

F

C100

4

47p

F

C100

5

47p

F

R108 4.7K

1

P1

+3.3V

R155 470R

R156 1K

SH201R157 1K

R158 1K

KRC104

C174

2

20pF

C176

2

20pF

C175

0

.1uF

B to

B F

lex.

PCB

C188

220p

F

C189

220p

F

C161

220p

F

C178

2

20pF

C179

2

20pF

C177

2

20pF

1

1 1

2 2

20 20

21 21

22 22

3 3

4 4

5 5

6 6

7 7

8 8

9 9

10 10

11 11

12 12

13 13

14 14

15 15

16 16

17 17

18 18

19 19

1 2

2 3

3 4

4 5

5

7 7

6 6

C187

0

.1uF

Q110

LCD Flex.PCB

LCD101 LCD_BEACON

+3.3V

SWB+ J101 05004HR - 0701S(G)

CR114 CR115

CR113

CR111

CR112

CR110

CR110~CR115 : BL - HG036

L_ARROW R_ARROW

P2 P3

4

7 8 9

# 0 *

5 6

3 2

R109 4.7K

R112 4.7K

R119 4.7K

C10

08

47p

F

C10

07

47p

F

C10

18

220

pF

C10

11

47p

F

C10

10

47p

F

C10

09

47p

F

C10

14

47p

F

C10

13

47p

F

C10

12

47p

F

C16

7

220

pF

C16

8

220

pF

C16

9

220

pF

Q4

Q3

Q2 Q1

STD U106_SW

PTT2

20KHZ_SEL

PLL_PS

BUSY

PLL_CLK PLL_STB

PLL_DATA

RX_EN SQ_CS

SQ_U/D TX_PWR_LOW

+3.3V

MIC1

R194 6.8K

C140 47nF

TX_AF1

+5V

FTV

C143 0.1uF

R171 10K

R177 56K

Q120 KRC404

Q121 KRC404

+3.3V

R167 100K R1004

10K R1005 10nF

BEEP C

C B

B

1 U107

R178 100K

C123 0.1uF

C124 1nF R113

47K

RT501 10K (TH)

R507 10K

+3.3V

+3.3V

C144 0.1uF(K) 2

E

E

3

R10

06

N

A

R168 100K

KTA2014 Q112

KTA2014 Q111 R163

100K

DTM

F_C

ON

BE

EP

_CO

N

R165 3K

RSSI

100

+3.3V

LOW_BATT VOX

TIGHT_SQ

RX_TONE_CON2

RX_TONE_CON1

99

98

97

96

95

94

93

92

91

90

89

88

87

86

85

84

83

82

81

80

79

78

77

76

75

74

73

72

71

70

69

68

67

66

65

64

63

62

61

60

59

58

57

56

55

54

53

52

51

PWDN

RX_TONE_EN

LCD_CLK

TON

E4

TON

E3

TON

E_IN

T3

TON

E2

TON

E1

VSS

CN

VSS

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

1 2 3 4 5 6 7 8 9 10 BE

EP

LCD

_DAT

A

RES

ET

X_O

UT

GN

D

X_IN

VCC

1

TON

E_IN

T1

B_S2

B_S2

A_S2

A_S2

FUN

_KEY

1

TON

E_IN

T2

POP_

CO

N

MO

D_C

ON

_CS

MO

D_C

ON

_U/D

LCD_CS

A_VCC

V_REF

RSSI_IN

A_GND

TEMP_IN

LOW_BATT_IN

VOX_IN

TIGHT_SQ

RX_TONE_CON2

RX_TONE_CON1

N/S_SW

TX_EN2

TX_EN1 AUDIO_MUTE_CON

FREQ_CON1

FREQ_CON2

FREQ_CON3

DTMF_DEC_EN

TX_PWR_U/D

BEEP_CON

MIC_MUTE2

N/S_SW

TX_EN2

TX_EN1

AUDIO_MUTE_CON

DTMF_OUT

R169 1.2K

KIA 7027AT

R164 100K

SWB+

C195 220pF

CR101 NA

LOW_BATT RX_TONE_EN

PTT1 LED(RED)

LED(GREEN)

PROGRAM_DATA

PLL_LD

FUN_KEY2

MOD_CON_U/D MOD_CON_CS

FUN_KEY1

A_S3

A_S2

B_S2

+3.3V

R18

2 2

00K

R17

9

51K

R18

0 1

00K

R11

5

10K

R190 15K

R184 15K

C146 15pF

FL101 7.3728MHZ

C145 15pF

R148 1M

R185 0R

R114 10K

DTMF_OUT

PLL_LD

VOX_EN

AK_CSN

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

AK_CLK

AK_DATA

FUN_KEY2

PRG/CLONE_TX

PRG/CLONE_RX

LED(GREEN)

LED(RED)

RIGHT_BUTTON

LEFT_BUTTON

PGM_BUTTON3

PGM_BUTTON2

PGM_BUTTON1

PTT1

SW_SCAN4

SW_SCAN3

SW_SCAN2

SW_SCAN1

DTMF_CON

SW_IN3

SW

_IN

2

SW

_IN

1

PLL

_CLK

P

LL_S

TB

PLL

_DAT

A

BU

SY

LIG

HT_

CO

N

EP

P_D

ATA

EP

P_C

LK

VC

C2

SQ

_CS

VS

S

DTM

F_Q

4

DTM

F_Q

3

DTM

F_Q

2

DTM

F_Q

1

DC

S_S

EL

PTT

2

20K

HZ_

SE

L

RX

_EN

DTM

F_S

TEE

R

SQ

_U/D

TX_P

WR

_LO

W

TX_P

WR

_CS

U101

M30302FCPGP

VOX_EN

R195 100R

R152 680R

PO

P_C

ON

B_S1

C194 0.1U

R154 47K(1%)

R153 68K(1%)

C198 NA

Q122 KRC404

R172 10K

R173 10K

R175 47K R176 30K

R174 120K

C141 NA C142

470pF

TX_PWR_CS

TX_PWR_U/D

+3.3V

C147 0.1uF(K)

R139 10K

U104 24LC64

U102_SDATA U102_SCLK U102_CSN

VCC A0

A1

A2 VSS

OC

SCL SDA

7

8

6

5 4

3

2

1

R193 10K


Figu

765

31

2

4 R610 2R2

R615 2R2

C616 0.1uF(K)

C617 0.1uF(K)

J60353047-0210

SPK1SM3624X1

J6010980683Z01L601

2.2uH(1608)

L6022.2uH(1608)

R616 0R

C609 0.1uF(K)

C621 470pF

C622 47pF

+

-

SWB+

/ 16V(A)


AUDIO_IN

AUDIO_MUTE_CON

POP_CON

Q610KRC404

Q601KRC404

R636 560R

R619 10K

R613 15K

R609 1K

R608 NA

R621 39K

R620 33K

C619 33pF

R614 560K

TDA 8541

U601

IN- OUT-

VCCIN+

SVR GND

OUT+MODE

4

3

2

1 8

7

6

5

C6150.22uF (K) (1608)

+

+

C601 10uF

C606 0.1uF

C618 4.7uF / 16V(A)

R635 0R

C

605

4

.7uF

(201

2)



8/16V(A)

50970pF

C60110uF/16V(A)

+

+

C6060.1uF

R62033K

C6184.7uF/16V(A)

0RAF_OUT2

AF_OUT1

TDA8541

U601

R614 560K

C619 33pFAUDIO

C415 20K

R412 3.9K

Q404STB1188

R413 8.2K C406

0.1uF

C51122uF/16V(B)C510

4.7uF(2012)

U507TC1240

C512470pF

+10V

61

C54522uF/10V(A)

C5310.1uF

NJM324 U502-D R523

30K(1%)C5330.1uF

R524 47K(1%)

1/2 VCC

1413

+5V

+5V

+5V

+5V

+5V

+5V

+5V

+5V

+3.3V

+3.3V

+3.3V

+3.3V

+3.3V

+3.3V

+3.3V

+3.3V

+3.3V

+3.3V

+3.3V

+3.3V

+3.3V

+3.3V

U107_pin1

U106_pin4

U103_pin11,20

U104_pin8

J102_pin16

U104_pin1

Q711

R719,722

R507

U508_pin1

R537

U101_pin14,96,97

R131

R150

R734

U501_pin4

Q705,706

Q304

Q407

U105_pin4

U502_pin4

R171-173

12 +

-

+

+

2

3

5

4

C+VINVOUT

GNDSHDNC-

R716,717

DRIVE_CON

(1608)

13K 5

6

7

81

IN- OUT-

VCC

SVR GND

MODE OUT+

IN+2

3

4

+3.3V

+10V

+5V

+3.3V

RX_AF2

B_S2 11

1111

1212

1010

22

33

44

55

66

77

88

99

B_S1A_S2A_S3

SWB+BAT+

RX_AUDIOBEEP

LED(RED)

J602BAT+

GND060031MA005G500PL C460

0.1uF

L413

2 -+

2

1

16

C5410.1uF

C5010uF

C4 +

R62139K

R635

RX_

APC(U401_PIN7)

Q502KRC404

Q501KRC404

R502220R

SW1 RY8487

B

B

C

CA1

2

3 6

5

4 7

8

9

R50

1

220

RC56

2

47p

F

C56

1

47p

F

C56

0

47p

F

C56

5

47p

F

C56

6

47p

F

C56

3

47p

F

C56

4

47p

F

C54

0

0.1

uF

C62

0

470

P

R53

5

10

K

C60

2

0.

22uF

(k)

R53

4

10

K

R53

3

10

K

R53

2

10

K

12

J104

J105

43

E

C

R50

1

BL-

HE

IG03

3B

R414 4.7K

R4113.3K

C411NA

Q405KTC4075

C50722uF/16V(B)

C506470pF

VIN C

VOUT

1

3

2

4

5

6 C501470pF

+

+

C50222uF/16V(B)

U505TK11250AMTL

C5030.1uF

SW / VOL1 RY8418

C6150.22uF(K)

R615

C6054.7uF(2012)

R608NA

R609 1K

R636 560R

R619 10K

Q601KRC404

Q610KRC404

MU

TE_C

ON

PO

P_C

ON

U506TK11233AMTL

VIN

VOUT

C5

4

R4243

3

C4640.1uF

C4320.1uF R420

4.7MR42268K(0.5%)

U401-AKIA358

R42168K(0.5%)

R419220K(0.5%)

C433NA

R4233.9M

R418220K(0.5%)

R417RLC63 0R1BAT +

SWB +

SWB +

SWB+

SWB+

C461470pF

LED(GREEN)


Figu

VOX

7K

111uF(K)

R162820R

C1022.2nF

R103150K

C10347pF

R102 47K

C101 1uF(K)

R101 10K

R117

660E

160E

C1380.22U(K)(1608)

R138220K

FL1023.5795MHz

C12015pF

R180

+3.3V

C12133nF

C1070.1uF(K)

C10515nF

R110270K

R11847K

C10647nF

R1161.2K

U101-PIN26(DTMF_IN)C104150pF

R1178.2K

+3.3V

R181150R

U

102

AK

2347

C1531uF(K)

C1541uF(K)

R15010K(1%)

R15112K(1%)

U101_PIN72

U101_PIN63

U101_PIN64

U101_PIN65

U101_PIN66

R142

330K

IN+

IN-

GS

VREF

INH

PWDN

NC

NC

STD

EST

ST/GT

OSC1

OSC2

VSS TOE

Q1

Q2

Q3

Q4

VDD

100K

51K

200K

NA

R179

R183

R182

TONE 4

U101_PIN79

R140

1

19

18

17

16

15

14

13

12

11

20

2

3

4

5

6

7

8

9

10

R141100K

C11910nF

68K

TONE 3

TONE 1

TONE 2

R145 1M

C11527pF C116

27pF

C117 1.2nF

C11810uF / 16VR144 100K

R143 91K

RX_AF2

U103MT88L70

+

R146 0R

R105 47K

R10647K

1213 14

CS

NTE

ST

XIN

XO

UT

VD

DV

SS

MO

D

DIN

DIN

0E

XTI

N

TXIN

FIL0

RX

IN0

RX

IN

TXIN

0

AG

ND

AG

ND

IN

RX

OU

T

LIM

LV

EX

TIN

O

RS

AO

UT

TSA

OU

TSD

ATA

SC

LK15 16 17 18 19 20 21 22 23 24

12345678911 10


R508 1K

C56810nF

GND

R5092.2K

NJM324U501-B

7

+-

+-

+-

+-

+-

+

-

+

-

+

-

6

12

8

4

11NJM324

NJM324U501-EU502-E

9

10

1

2

3

45

6

7

8U/D VDO

VSS

A

W

NC

B

CS/3

5

C51722nF C523

1nF

C5431.2nF

C5225.6nF

R514 24K

R515 12K

R5974.7K C525

330PC548NA

C544 NA

+5V

C142470pF

C141NA

L604 2.2uH(1608)

CR601KDZ5.1V

PROGRAM_DATA

+3.3V

MIC10B27P40(2.8mm)

C14047nF

J6010980683Z01

L603

2.2u

H(1

608)

1

C546 0.1uF R513

10K

C5204.7nF

1/2VCC

VOX_EN

+3.3V

NJM324U501-D

14

14

13

12

13

12

C5191.2nF

R103.9

C1

C550560pF

R510 15KR512

20K

R1350.1uF(K)

C135 47pF

R136100K

R111NA

C1360.1uF

C1370.1uF(K)

C

CR11KDS1

KDS

C13910K

Q114KRC404

NJM324105-D

R1374.7M

R12047K

98

10

C549560pF

R511 8.2K

C518 5.6nF

C5211.2nF

NJM324U501-CR539

330K

1/2VCC

3

2

1

2

4567

R1946.8K

C52433nF

R516 12K

R51715K

R5388.2K

R536 330K

R5185.6K

1/2VCC

+3.3V

2 2

2

PB

501

PTT

DH

T111

4S1

PB

502

FUN

1D

HT1

114S

PB

503

FUN

2D

HT1

114S

1

1

C570 47pF

PTT1+3.3V

FUN_KEY1

FUN_KEY2

R5371K

Q505KRA305

Q504KRC404

TX_AF2

PTT2

R529 47K

R531 47K

R540 47K

R530 47K

R526 100R

R545 4.7k

C5372.2nF

U101_PIN31(SDATA)U101_PIN30(CLK)U101_PIN29(CSN)

R52882K

+

+

C56710uF / 10V(A)

R541330K

R527 100K1

2

3

C53610nF

NJM324U502-A

1/2VCC

NJM324U502-C

R521 330K

R5192M

R520560K

R59820K

U508

+3.3V

MCP4011(503)

R599NA

+3.3V

C191220pF

C19010uF / 16V

C199470pF

10R

R13

1

R104 47K

C1001uF(1608)

C52818nF

MOD_CON_U/D

MOD_CON_CS

C547NA

C5290.1uF

C53010nF

C54210nF

NJM324U501-A

TO_VCTCXO&VCO


Figure 10-10. Receiver Audio Filter and Sub-tone Schematic Diagram

C13033nF

C1570.22uF(K)

C1340.22uF(K)

NJM324U105-C

TONE_INT

RX_TONE_EN

C1580.22uF(K)

Q102KRC413

+5V

Q104KRC413

Q113KRC404

RX_TONE_CON1

RX_TONE_CON2

1/2VCC

R149100K

R129 150K

C10922nF

R121330K

NJM324U105-B

NJM324U105-E

11

4

9

1086

57

R19215K

R132 10K

R134 4.7M

R133 470K+

-+

-

+-

C191220pF

C6020.22uF(K)

C199470P

R13110R

R1460R

R1451M

FL1023.5795MHz

R10447K

R181150R

R15010K(1%)

R15112K(1%)

+3.3V

C1541uF

C1531uF

U10

2A

K23

47

TES

TC

SN

EX

TIN

O

EX

TIN

TXIN

TXIN

O

AG

ND

AG

ND

IN123456789101112

242322212019181716151413

SC

LK

SD

ATA

VS

S

MO

D

LIM

LV

XIN

DIN

O

XO

UT

RX

OU

T

VD

D

FILO

TSA

OU

T

RX

INO

RS

AO

UT

RX

IN

DIN

R10547K

R10647K

R100310K

RX_AF1

SDATA

DCS_SEL

U106TC7S66FU

SCLK

CSN

SW/VOL1RY8418

R100110K

R10029.1KC113

560pF

C11627pF

C11022nF

C12547nF

C12633nF

R12615K

R122330K

R19115K R128

3.9K

Q103KRC413

C12747nF

R127 33K C12947nF

C12847nF

C1560.22uF(K)

Q101KRC413

24

1

2

31

NJM324U105-A

+

-

C11527pF

C114220pF

C1001uF(1608)

C11210uF/16V

C620470P

123456789

101112

123456789

101112

AUDIO_IN

J105

5274

5-12

97

J104

XF2

M-1

215-

1A

B to

B fl

ex. P

CB

C19010uF/16V

+

+

+3.3V


Figu
re 10-11. VHF (136–174 MHz) Mainboard Top Side: PCB No. 8431BEACON400
J603

C621

C616

C617

C602

J105

C461C460

C439LK2

Q408

R433

U402Q406

Q407U401

R424

R427

R425

R426

R432

R431

C436

R423C433

C435

R420R419R421

L603

R417R418

R422

C453

R507

R411

R412

R413

C415

C406

C380

Q405

Q404

Q101

Q103Q113

R314R318

R316

R208

R213

R212R211

R210

R222Q207

Q206

Q111

Q112

U105

FL102

C213

C157 C109C130

C128

C126C539

R730

Q709R722R723C750

C754

C755

C751

C752

R716

R718

R733

C749

C748

C738

C741R731R719

C753TP11

C119C512

C511

C510

C516

C533

C515

C536

C537C530

C545

C531

C567

C739C740

C120

U103

U507

R724R725

R726 R740R717

R728

R727

R141R140

R505

R526

R545

R527

R541R521R519

R523

R524

R506U502

R504

R503

R522

R142

C121

RT502

R528

R734

R729

R753

R752

R751

Q711

Q710 Q708

Q707

R721 R720

C538

U701

C746

L709C756

C747

R732Q503

Q114

C127

C116

R216

R206R207

R168

R117

R116

R1005

R1006

R1004R

167R

110

R133

R136

R115

R185

R148

R118

R165

C206

R203

C204

C214

C208

C198

C158

C110

C156

C125

C136

C129

C104

C139

C105

C106

C107

TP10

R138

R164

R132

R134

R192R128

R149

R111

R129

R122

R127

R126

R121

R204 R217

R137

R169

R163

R135

C138

C137

C134

CR201

C135

CR117

CR116

TP9

TP2

TP6TP5

TP7 J102

TP1

FL101

TP8

U101

TP4

TP3

C115

C145

C146

R146

R145

R250

CR

202

RT201

R317

R342

CR

306

Q202

C381

C334

C320

C378

C339

C209C210

C211

DEC1

C570

PB502

PB503

Q104Q102

U202

RT501

B401

B402

SH103

SH102

Q403

R414

C437

L413

L604

L601 J601

L602

C622

C432

C438

C454

C411

R499

R616

R615

R636

Q610

Q601

R608R619

R609

C601

PB501


e 10-12. VHF (136–174 MHz) Mainboard Bottom Side: PCB No. 8431BEACON400
Figur
ANT4 ANT1

ANT3 ANT2

L410

L409

L411L301

L412

L408

L415

L406

L403

L407

L708

L707

L704

L703L706

L702

Q703

Q704

Q706

SH101

C717 C715

C706

C731C728

C702

R701

C701

C707

L701C

704

C709

C716

C718

C721C723

C725

C727

C719

C726

C724

CR

703

CR702CR701

C722

C712

C710

C711

Q701

Q702Q705

Q7

L405

L402 L401

L404

L416

C429

C445

C422

C419

C428

C427

C426

C446

C423

SH

104S

H105 C

R301

CR401

C455

C434

C409

C408

C405

C401

C448C447

C449C440

C404

C444

C403C402

C421

Q402

Q401

C410

R429R428

R410R409

R408R407

R435

R714

R706

R708

R710

R711

R705

R704

R702

R703

R715

R707

R709

R712

R713

L705

C714

C705

C703

C729

R402

R404

R436

R434

R401

R403

R405

R406

R430

CR

311

C425

C420

C418

C417

C413

C430

C431 R416

L326

L302

L303

Q301 L304

L305

L309CR305

L308

L335

C313

C322

C318

C369

C329

L340 C330 C331

L332

R338

C332

R319

C342

C341

C338

C340

C337C

347C

203C

201

CR315CR312

FL201

C335R311R312

R258

FL301

C319

C376

C377

C328

C370

C343 C344

R310

R315

R335

Q306

Q307

Q303

U201

Q305

Q120 Q121 Q122

Q304

R306

R307

R336

R309

R173R176R

175R

172

R171R

174R

191

CF1 CF2

Q201

C112

C207

C153

C101

C111

C154 C

103

C102

R181R101

R162R103R102R151R150

R104

R1003

R1002R1001

R144

C113

C114

C117

R143

R131

R184

R180R179R182R183R190

R178

R114R532R533 U107

U102

R105R106

C190

CR101

C191

C501

C507

C541

C506

R139

R537

FL701

U104

R540

C503

C147

C546

C547C542R517

R538R518

R599

C544C524

C525C548C529

C550C519R107

R597

R515

R514

C522

C543

U501

R516U508

R598

C521C549

C523

C517C568

R509R508

C161C168C167 C172

C169

C170C171C165

C173C162

R195R152R529R531

R120

R530

R535

C509

C508 R534TP

15TP

14

TP13

TP12

C163C140C

188C

189C

164

C142

C141

CR

601

R193

R194

C166

C178C179C177

C518

C520

R510

R536

C528

R520

R511

R539

R513

R512

Q504

Q505

C502 U506

U505

C100

C199

C123C124R113R153

C195C194

R154

C118

C144

U106

R177C143

R399

R337

C367

C368

L329L333

L306

L327

L337

L330C

365C

333C

325C

326C

327L331

L310L311

L307

C321

C301

C359

C304

C307

C310

C311C

312C

314C416 C

315C

464 C354

C305

C317

CR

3002

CR

302

R301

R302R

305

R357

CR

303

CR307

C308

ANT5

C605

C618

C620C615

C540

C609

R621R620

R610

U601

R635

R613

R614

C619

C463

C462

C606

R415R358

R308

C356

C316 L336


Figu

C56

5

C56

6

C560

C561

re 10-13. VHF (136–174 MHz) Sub Circuit Board Top View: PCB No. 8421BEACON100

R501 R502

CR501

C56

3

C56

4

C56

2

Q501 Q502


. VHF (136–174 MHz) Sub Circuit Board Bottom View: PCB No. 8421BEACON100

SW / VOL1

Figure 10-14

SW1

J104


Figu

C1018

J101

C176C175

7487

R155

R199R147C1005

C1004

R196R197R198R161R160R159

C1002C1003

C1006

C1007

R108

R158

156

R109

R112

C1012

C1013C1014

R119

R157

C1015

J103

C10

09C

1010

C10

11Q

110

re 10-15. VHF (136–174 MHz) Keypad Board: PCB No. 8422BEACON100

MIC1

CR110 CR111

CR114 CR115

CR112 CR113

SH201

C1C1

R

C1008

C1001


1

47nF

47nF

47nF

3nF

7PF

.1μF

.1μF

0.22μF

0KΩ

473PF

70PF

.1μF

.1μF

5PF

5PF

.1μF

1μF

1μF

.22μF

.22μF

.22μF

20PF

20PF

20PF

20PF

20PF

20PF

20PF

20PF

n

C169 TDK – Chip Cap,1005 J 220PF






C175 TDK – Chip Cap,1005 Z 0.1μF








C190 HITACH – Chip Tantal, 10uF-M/16V(A)




C199 TDK – Chip Cap,1005 K 470PF




C206 TDK – Chip Cap,1005 K 0.1μF









0.3.1 Parts List


B401 TDK – Chip beads 1608 D 100Ω

B402 TDK – Chip beads 1608 D 100Ω

C100 TDK – Chip Cap, 1608 Z 1μF

C101 TDK – Chip Cap, 1005 K 1μF



C104 TDK – Chip Cap, 1005 J 150 PF




C109 TDK – Chip Cap,1005 K 22nF


C111 TDK – Chip Cap, 1005 K 1μF






C117 TDK – Chip Cap, 1005 K 1.2nF













C134 TDK – Chip Cap,1005 K 0.2210nFμF


C136 TDK – Chip Cap,1005 Z 0



C139 KAMAYA – Chip Res, 1005 J 1













C161 TDK – Chip Cap,1005 J 2










C3

C3

C3

C3

C3

C3

C3

C3

C3

C3

C3

C3

C3

C3

C3

C3

C3

C3

C3

C3

C3

C3

C3

C3

C3

C3

C3

C3

C3

C3

CiR

μF

F

μF

μF

PF

μF

F

PF

PF

F

μF

PF

μF

F

F

μF

F

F

Ω

μF

F

F

F

F






C429 TDK – Chip Cap,1608 D 10PF


C431 TDK – Chip Cap,1608 J 1nF










C447 TDK – Chip Cap,1005 C 5PF




C454 HITACH – Chip Tantal, 22uF-M/16V(B)









01 TDK – Chip Cap, 1005 J 47pF

04 TDK – Chip Cap,1005 J 20PF

05 TDK – Chip Cap, 1005 D 10PF


08 TDK – Chip Cap,1005 K 10nF

10 TDK – Chip Cap,1005 Z 0.1μF

11 TDK – Chip Cap,1005 K 1000PF









20 HITACH – Chip Tantal, 10uF-M/16V(A)



27 TAIYOYUDEN – Chip Ind, 1005 J 10N

28 TDK – Chip Cap,1005 D 6PF



31 TDK – Chip Cap, 1005 C 5PF







39 TDK – Chip Cap,1005 K 0.1μF


C340 TDK – Chip Cap,1005 K 0.1

C341 TDK – Chip Cap, 1005 J 47P


C343 TDK – Chip Cap,1005 Z 0.1




C356 TDK – Chip Cap,1005 K 10n

C359 TDK – Chip Cap, 1005 D 10

C365 TAIYOYUDEN – Chip Ind, 1005 J 47N


C368 TDK – Chip Cap,1005 K 10n







C405 TDK – Chip Cap,1005 J 20P





C415 KAMAYA – Chip Res, 1005 J 20K









0nF

M/

0.1μF

.1μF

0nF

1.2nF

M/

.1μF

60PF

60PF

7PF

7PF

7PF

7PF

7PF

7PF

7PF

M/

0nF

7PF

M/

.22μF

4.7uF

.1μF

.1μF

0.22μF

.1μF

.1μF

n

C618 HITACH – Chip Tantal, 4.7uF-M/16V(A)

























































C539 HITACH – Chip Tantal, 10uF-16V(A)





























C7

C7

C7

C7

C7

C7

C7

C7

C7

C7

C7

C7

C7

C7

C7

C7

C7

C7

C7

C7

C1

C1

C1

C1

C1

C1

C1

C1

C1

CiR

F

F

F

F

F

F

PF

r,

r,

36D-

36D-

36D-

36D-

36D-

36D-

S-

S-

181

181

CR305 KEC – VARIABLE DIODE, KDV269E

CR306 KEC – SWITCH DIODE, KDS-160E (ESM)




CR401 M/A COM – PIN DIODE, MA4P7001F-1072T

CR501 BRIGHT LED – LED DIODE, BL-HEIG033B-TR

CR601 KEC – ZENOR DIODE, KDZ5.1V




DEC1 BGTech 8287455c24010 CP, Desciminator, JTBC455C24

F-CABLE1

BGTech 8560228005000 SNAGGWA, BEACON FLAT CABLE, FF12-22N080XXA

F-CABLE2

BGTech 8560124005000 SNAGGWA, BEACON FLAT CABLE, FF12-12N040XXA

FL101 BGTech 82827R3728M00 SHINSUNG, Crystal, 7.3728MHz (H: 2.8mm)

FL102 BGTech 82827R5795M00 SHINSUNG, Crystal, 3.5795MHz (H: 2.8mm)

FL201 BGTech 828244R645M00 SHINSUNG, Crystal, 44.645MHz (SMD)

FL301 BGTech 828645R100220 SHINSUNG, Crystal, MCF 45.15S12.B (8.5KHz)







38. TDK – Chip Cap, 1005 D 7PF







49 TDK – Chip Cap, 1608 Z 1μF


51 HITACH – Chip Tantal, 1uF-M/35V(A)


53 PANASONIC – Film Chip Cap, 3216 J 47nF

54 PANASONIC – Film Chip Cap, 3216 J 47nF



















C1018 TDK – Chip Cap, 1005 J 220

CF1 BGTech 8286045500120 TOKO, Ceramic FilteELFY455F

CF2 BGTech 8286045500220 TOKO, Ceramic FilteELFY455H

CR110 Bright LED – LED DIODE, BL-HG0TR






CR116 KEC – SWITCH DIODE, KD160E (ESM)

CR117 KEC – SWITCH DIODE, KD160E (ESM)

CR201 KEC – Switch DIODE, KDS

CR202 KEC – Switch DIODE, KDS

CR301 PANASONIC – Switch DIODE, MA2S07700L





0NH

67

2N

7N

0NH

64

7N

7N

2N

0NH

nH J

nH J

2N

2N

nH J

nH J

-

-

-

-

R0K-T

-

-3TL

-3TL

.2uH

.2uH

.2uH

n


L701 TAIYOYUDEN – Chip Ind, HK1005 R10J


L703 DAERIM – COIL AIR, 0.28-1.1-6TL(SMD)

L704 TAIYOYUDEN – Chip Ind, LK1608-1R0K-T


L706 DAERIM – COIL AIR, 0.3-1.4-6TL

L707 TAIYOYUDEN – Chip Ind, LK1608-1R0K-T



LCD1 BGTech 86343208A2020 EVERRVIEW,VBS3208A2-7FWLYA,REV4.0

MIC1 BGTech 8420063215000 BSE, C-MIC, 6.0*2.7/2.2KΩ,2V,-44±3dB, Pin type




Q101 KEC – KRC413

Q102 KEC – KRC413

Q103 KEC – KRC413

Q104 KEC – KRC413

Q110 KEC – SWITCHING TR

Q111 KEC – KTA 2014

Q112 KEC – KTA 2014

Q113 KEC – KRC 404

Q114 KEC – KRC 404

Q120 KEC – KRC 404

Q121 KEC – KRC 404


FL701 BGTech 8289012R80010 SHINSUNG, VCTCXO, 12.8 MHZ

J101 BGTech 851607C01S110 YUNHO, FPC CONNECTOR, 05004HR-07C01S(G)

J102 BGTech 851622A01S110 YUNHO, FPC CONNECTOR, 05004HR-22A01S

J103 BGTech 8516220005020 KYOCERA, FPC CONNECTOR, 04-6292-022-000-800+

J104 BGTech 851612151A110 OMIRON, FPC CONNECTOR, XF2M-1215-1A

J105 BGTech 851612A01S110 YUNHO, FPC CONNECTOR, 05004HR-12B01S(G)

J601 BGTech 8500031009800 CHI CHENG, SPK MIC JACK, 0980683Z01-D

J602 BGTech 85100G500PL00 SUYIN, BATTERY CONNECTOR, 060031MA005G500PL

J603 BGTech 8510530470210 MOLEX, CONNECTOR, 53047-0210

L301 TAIYOYUDEN – Chip Ind, LEM2520T-68NK





L306 DELTA – Chip Ind, 2012 820NH (Tolerance: 5%)








L327 TAIYOYUDEN – Chip Ind,1608 K 82

L329 BGTech 8920PT1667020 TOKO, #617PT-16

L330 TAIYOYUDEN – Chip Ind, 1005 J 8








L401 TAIYOYUDEN – Chip Ind, 1608 220






L408 DAERIM – COIL AIR, 0.28-1.16TL(SMD)




L412 TAIYOYUDEN – Chip Ind, LK1608-1


L415 DAERIM – COIL AIR, 0.45-1.4

L416 DAERIM – COIL AIR, 0.45-1.4

L601 TAIYOYUDEN – Chip Ind, 1608 K 2





Q1

Q2

Q2

Q2

Q2

Q3

Q3

Q3

Q3

Q3

Q3

Q4

Q4

Q4

Q4

Q4

Q4

Q4

Q4

Q5

Q5

Q5

CiR

Ω

Ω

KΩ

Ω

Ω

























R135 TDK – Chip Cap,1005 K 0.1μF







22 KEC – KRC 404

01 KEC – KRC 404

02 KEC – KRC 404

06 KEC – KRC 404

07 KEC – KRC 404

01 NEC – SWITCHING TR

03 NEC – SWITCHING TR

04 KEC – KRA 305

05 KEC – KRC 404

06 BGTech 81492SK711020 2SK711 TOSHIBA FET N-Channel Transistor

07 BGTech 81492SK711020 2SK711 TOSHIBA FET N-Channel Transistor

01 BGTech 8142000951120 PBR 951LT1 PHILIPS BJT NPN Transistor

02 BGTech 8149003078021 2SK3078A TOSHIBA FET N-channel Transistor

03 BGTech 8149003476021 2SK3476 TOSHIBA FET N-channel Transistor

04 BGTech 8145001188021 STB 1188 AUK BJT NPN Transistor


06 KEC – KRC 404 BJT NPN Transistor

07 KEC – KRA 305







Q505 KEC – KRA 305











Q708 KEC – KTA 2014 BJT PNP Transistor

Q709 KEC – KTA 2014 BJT PNP Transistor


Q711 KEC – KRA304 BJT PNP Transistor








0KΩ

20KΩ

7KΩ

0KΩ

6KΩ

00KΩ

1KΩ

00KΩ

50Ω

00KΩ

5KΩ

Ω

5KΩ

5KΩ

5KΩ

0KΩ

.8KΩ

00Ω

7KΩ

7KΩ

7KΩ

7KΩ

2KΩ

2KΩ

0KΩ

2KΩ

KΩ

20KΩ

5KΩ

00KΩ

n














R310 KAMAYA – 1005 J 1KΩ











R338 KAMAYA – Chip Res, 1005 C 1PF











R145 KAMAYA – Chip Res, 1005 J 1MΩ



R148 KAMAYA – Chip Res, 1005 J 1MΩ
























































R4

R4

R4

R4

R4

R4

R4

R4

R4

R4

R4

R4

R4

R4

R4

R4

R4

R4

R4

R4

R4

R4

R4

R4

R4

R4

R4

R4

R4

R4

CiR

Ω

Ω

Ω

KΩ

Ω

Ω

KΩ

47

Ω

Ω

Ω

KΩ

Ω

KΩ

Ω

Ω

Ω

Ω

Ω

Ω

KΩ

Ω

KΩ

KΩ

Ω

Ω

Ω

















R545 NOBLE – CHIP SEMI V.R, 2PIE 4.7 KΩ




R610 KAMAYA – Chip Res, 1005 J 2.2Ω



R615 KAMAYA – Chip Res, 1005 J 2.2Ω








02 KAMAYA – Chip Res, 1005 J 39Ω















17 ROHM – Chip Res, 1W J 2512 0.1Ω

18 KAMAYA – Chip Res, 1608 D 220KΩ
























R504 NOBLE – CHIP SEMI V.R, 3PIEKΩ



















R523 KAMAYA – Chip Res, 1005 F 30K

R524 KAMAYA – Chip Res, 1005 F 47K



Note:1: Not for PMUD2441AAL

0Ω

0KΩ

Ω

0Ω

.8KΩ

KΩ

0KΩ

.1KΩ

0KΩ

0KΩ

0nF

H)

H)

H)

36θ

lume

7

,

64

7S66FU

TOR,

, S

n

U401 BG Tech 8191401150220 DIGITAL POTENTIOMETER, MCP4011-502E/MS

U402 BG Tech 8124000358011 OP AMP (DUAL), KIA358

U501 BG Tech 8191401150220 DIGITAL POTENTIOMETER, MCP4011(5002)

U502 BG Tech 8124000324011 OP AMP, NJM324

U505 BG Tech 8124000324011 REGULAR IC, TK11250CMCL - G (AMTL)

U506 BG Tech 8123011250021 REGULATOR IC, TK11250AMTL

U507 BG Tech 8123011233020 VOLTAGE DOUBLER, TC1240AECH

U508 BG Tech 8128TC1240020 DIGITAL POTENTIOMETER, MCP4011-503E/MS

U601 BG Tech 811608541T020 AUDIO AMP (SOT 8PIN TYPE) IC, TDA8541T

U701 BG Tech 810415E03S020 PLL IC, MB15E03SLPFV1-G-BND-EF-6

PCB1 BG Tech 8431BEAVHF400 CAFSYSTEM, Main PCB, FR4 4 Layer PCB

SH101 BG Tech 8860BEACA1010 SHIELD CAN - VCO

SH102 BG Tech 8860BEAC93010 SHIELD CAN PLL

SH103 BG Tech 8660BEACA4010 PA SHIELD CAN

SH104 MOTOROLA PMDN4137AR Finger Strip PCB

SH105 MOTOROLA PMDN4137AR Finger Strip PCB

SH201 MOTOROLA PMDN4151AR Finger Strip–Pair

SUB PCB1

BGTech 8421BEACON100 CAFSYSTEM, Sub PCB, 1.2T 2 Layer

KEY PCB1

BGTech 8422BEACON100 CAFSYSTTEM, Key PCB, 1.2T 2Layer








R707 KAMAYA – Chip Res, 1005 F 4.7KΩ





































R1005 TDK – Chip Cap,1005 K 1

RT201 TAIYOYUDEN – Thermistor, 10K (T



SPK1 BG Tech 8400362424100 Speaker, 24Ω 1.0W(Connector type)

SW/VOL1

BG Tech 84766N992N151 TOKOS, Switch VoRY-8418

U101 BG Tech 81100303RF020 CPU IC

U102 BG Tech 8116AK2347020 AUDIO LSI, AK234

U103 BG Tech 8192088L70020 DTMF RECEIVERMT88L70

U104 BG Tech 811324LC64020 EEPROM IC, 24LC

U105 BG Tech 8124000324011 OP AMP, NJM324

U106 BG Tech 8135TC7S66020 Analog SW IC, TC

U107 BG Tech 81287027AT020 VOLTAGE DETECKIA7027AT

U201 BG Tech 8125311360020 FM IC, TA31136

U202 BG Tech 8191401150320 DIGITAL POTENTIOMETERMCP4011-503E/M


10-23

Notes

Chapter 11 403 – 447 MHz UHF1 Theory Of Operation


11.2 UHF1 ReceiverThe UHF1 receiver design covers the frequency range of 403 – 447MHz and it is a double conversion super heterodyne with 1st IF 45.1MHz and 2nd IF 455kHz. The receiver is divided into two major blocks, Front End and Back End as shown in Figure 11-1.

Figure 11-1. UHF1 Receiver Block Diagram

CrystalFilter

Crystal44.645MHz

1st MixerRF

AmpPreselector

FilterPostselector

FilterRX from

Antenna Switch

Inj FilterFirst LO

from Synthesizer

IFAmp

IFAmpLPF


455HW

QuadratureDetector

RSSI

N/S_SW

Recovered Audio

455C24

11-2 403 – 447 MHz UHF1 Theory Of Operation: UHF1 Receiver

11.2.1 Receiver Front EndIncoming RF signals from antenna are first routed through the harmonic filter (L409 – L411, C426 – C429, C445, C446) and antenna switch (CR301), part of the transmitter circuitry, before being applied to the receiver front end. The receiver front end consists of preselector filter, RF amplifier, post-selector filter and a double-balanced mixer. The preselector filter is a varactor-tuned 2-pole design using discrete elements (L320, L324, C351, C361, CR307 and CR314) in series/shunt resonator configuration. It is a band-shift filter and the frequency shift is controlled by varactor diodes CR307 and CR314, which are connected to the microprocessor. It is configured to provide steeper attenuation above the pass band for improved spurious rejection when high-side local injection is used. The frequency is separated into 8 steps and controlled by CPU (403 – 447MHz).The output of this filter is matched to the base of RF amplifier Q301 which provides 13dB of gain. The output of the RF amplifier is applied to the post-selector filter. The post-selector filter designed using discrete elements (L323, L328, C379, C363 and C355) in a series/shunt resonator configuration. It is a band-shift filter and the frequency shift is controlled by varactor diodes CR305 and CR313, which are connected to the microprocessor. It is configured to provide steeper attenuation above the passband for improved spurious rejection when high-side local injection is used. The frequency is separated into 8 steps and controlled by CPU (403 – 447MHz).The output of the post selector is connected to the double-balanced mixer consisting of components L329, L333, CR316. 1st local signal generated from VCO is filtered by injection filter (L310, L331, C325, C326, C388, C386, C365 and C387) to remove harmonics. The converted 1st IF frequency at mixer passes through L333 and matches the 45.1MHz IF signal to crystal filter (FL301).

11.2.2 Receiver Back EndThe 1st IF signal is amplified about 15dB by IF amp Q303. The output of the IF amp is connected to IF IC (U201).

1st IF frequency (45.1MHz) and 2nd LO frequency (44.645MHz) are mixed in U201. The second mixer converts the 45.1MHz high IF frequency to 2nd IF frequency (455kHz).

Additional IF selectivity is provided by two ceramic filters (CF1, CF2). The wider filter 455FW is used for 25kHz channel spacing, and the narrower filter 455HW is used for 12.5kHz channel spacing. These two ceramic filters may eliminate undesired signal and demodulated by demodulator in U201. N/S_SW which connected to microprocessor is used to select the side and narrow band.

The mute (squelch) circuit switches off the audio amplifier when no audio is present. The squelch circuit consists of U201 and U202 and their associated components. The noise signal from Pin 9 of U201 is used to control the squelch circuit sensitivity of U202. The noise passes through filter, and is amplified by internal amp of U201. The amplified noise acts as a DC voltage to control the mute system. So if the noise level is under the threshold voltage, the microprocessor (U101) un-mutes the radio. If the noise level is over the threshold voltage, the microprocessor mutes the radio. The squelch level is tuned in the factory. When a component or a part in the RX system is replaced, the squelch must be re-tuned using the Tuner.

403 – 447 MHz UHF1 Theory Of Operation: UHF1 Transmitter 11-3

11.3 UHF1 TransmitterThe UHF1 transmitter covers the range of 403 – 447MHz. Depending on model, the output power of the transmitter is switchable on a per-channel basis between high power (4 Watt) and low power (1 Watt). The transmitter is divided into four major blocks as shown in Figure 11-2.

• Power Amplifier• Harmonic Filter • Antenna Matching Network• Power Control.

Figure 11-2. UHF1 Transmitter Block Diagram

11.3.1 Power AmplifierThe transmitter power amplifier has three stages of amplification – Pre Driver (Q401), Driver Amp (Q402) and Final Amp (Q403). Signal from TX VCO is applied to the pre driver via an attenuator circuit. The attenuator is pie style resistor attenuator, and is used as isolation between VCO and the power amps. The -4dBm TX RF signal from attenuator is then amplified by pre driver and driver amp to around +25dBm and is applied to the final amp. The final amp (Q403) is an enhancement-mode N-channel MOSFET device providing a gain of 12dB. The device drain current is drawn directly from the DC battery supply voltage input via L413. A matching network consisting of C416, C417, C418, C419, C420, C451, C422, C452 and a strip line, transforms the impedance to approximately 50Ohm.

11.3.2 Antenna SwitchAn antenna switch works mainly as a switching device between transmit and receive paths. In transmit mode (PTT), Q407 is turned on and both PIN diodes (CR401, CR301) are forward biased into conduction. This enables the RF signal to pass to the harmonic filter and then to the antenna. In the receiver mode, both diodes are off. Signals applied to the antenna jack are routed via the LPF (harmonic filter), through network L409, L410, L411, C426, C427, C428, C429, C430, C445, C446 to the receiver input.


Attenuator Circuit

Pre DriverAmp

From VCO

DriverAmp

FinalAmp

Power Control

Strip Line

Current Detect

SWB+ BAT+


CR401

Harmonic Filter

Antenna

11-4 403 – 447 MHz UHF1 Theory Of Operation: UHF1 Frequency Generation Circuitry

11.3.4 Auto Power ControlThe APC keeps the current supply constant to the final amp (Q403). The drain current of Q403 (final amp) is sensed across resistor R417. The differential signal at the output of U401 (Pin 7) is passed to Q404 and Q405 that produces a constant power output to the antenna. If the current is changed due to change of battery voltage or load, APC controls gate voltage of Q403 and collector voltage of Q401 and drain voltage of Q402 to keep TX power stable. This circuit stabilizes TX power at a pre-determined level adjusted by U402. This bias voltage is tuned in the factory. If the transistor (Q403) is replaced, the RF Output Power must be tuned. By tuning the RF output power, the bias voltage will be tuned through U402. Extra care has to be taken during the tuning process. Do not exceed the maximum allowed bias voltage.

11.4 UHF1 Frequency Generation CircuitryThe PLL synthesizer subsystem consists of the reference oscillator (VCTCXO), VCO, PLLIC, Charge pump and Loop Filter.

Figure 11-3. UHF1 Frequency Generation Unit Block Diagram

11.4.1 Reference Oscillator (12.8 MHz VCTCXO)The reference oscillator is powered by regulated 5V provided by U505. The reference frequency 12.8MHz VCTCXO (Voltage Controlled Temperature Compensated Crystal Oscillator) is applied to the PLL IC (U701) via Pin 1. Min frequency can be adjusted by chip trimmer of VCTCXO. This frequency provides reference to the PLL IC and has a frequency stability of +/-2.5PPM (max) at the temperature ranging from -30 to +60 Degree Celsius.

ModulatingSignal

FL701

12.8MHzRef.OSC.

ChargePump

LoopFilter

TX VCO

RX OutTo Mixer

To PA DriverTX Out

Circuit

RX VCOCircuit

VoltageDoubler

SynthesizerU701

PLL Datafrom μP

403 – 447 MHz UHF1 Theory Of Operation: UHF1 Frequency Generation Circuitry 11-5

11.4.2 PLL IC Prescaler and ComparatorThe reference frequency from VCTCXO is divided to 6.25kHz or 5kHz by reference counter, R. The RF signal input from the VCO is divided to by prescaler (1/64), divided by N and A counters in PLL IC to determine frequency steps and then supplied to the comparator. The comparison frequency is 6.25/5kHz. The internal phase comparator compares the phase difference between the reference and VCO signal. When the phase of the reference frequency is leading, Pin 15(R) is the output. When VCO frequency is leading, Pin 16 (P) is the output. When P=R, small pulses are the output of the phase detector.

11.4.3 Voltage Doubler and Charge PumpThe voltage doubler (U507) converts 5V to 10V and is applied to the charge pump circuitry. The charge pump is used for charging output signals P, R supplied by PLL IC from 0-3.3v to 0-10v. This voltage is used to drive the VCO.

11.4.4 Loop FilterThe loop filter contains C751 – C754, R726 – R728. It reduces the residual side-band noise to get the best signal-to noise ratio. The output signal from loop filter is applied to VCO.

11.4.5 Dual VCOThe dual VCO module contains a RX VCO and a TX VCO. They are configured as colpitts oscillators and connected to power up through transistor switches. Only one VCO is selected at a time. A steering line voltage between 0.35V and 9.7V at varactor CR701 tunes the fill RX frequency range from 357.9MHz to 401.9MHz and varactor CR703 tunes the full TX frequency range from 403MHz to 447MHz.

In Receiver mode, high signal of RX_EN from Pin 71, U101 activates Q305. When Q305 is activated, current flows through the base of Q304 and thus activates the Q705. The varactor CR701 sets the resonance frequency. When there is a change in voltage supplied by loop filter, there is a change in the resonance frequency. L703 is the resonating coil, which forms the tank circuit together with variable cap C710.

In Transmit mode, high signal of TX_EN1 from Pin 84, U101 enables current flows through collector of Q503 and thus activates Q706. The varactor CR703 sets the resonance frequency. When there is a change in voltage supplied by loop filter, there is a change in the resonance frequency. L706 is the resonating tuning coil, which forms the tank circuit together with variable cap C722.

11-6 403 – 447 MHz UHF1 Theory Of Operation: Keypad

11.5 KeypadLeft, Right and P1 to P3 keys are directly connected to microprocessor via 22 Pin connector. When any of these keys is pressed, the voltage goes “low” and microprocessor detects it.For full keypad models, the number keys are in matrix type which consisted of 3 rows and 4 columns. When any of these keys is pressed, the voltage goes “low” and microprocessor interprets the voltage for each key press.


KEYPAD

Left

NUMBERS

RightP1 P2 P3

Key

Key row

Keycolumn

22pi

n co

nnec

tor

Key

pad

boar

d

22pi

n co

nnec

tor

Mai

n bo

ard

MCP

detect

Chapter 12 UHF1 Troubleshooting Tables

12.1 Troubleshooting Table for Receiver (UHF1) Table 12-1. Troubleshooting Table for Receiver (UHF1)










Verify clock input to U101 Pin 13 is 7.3728 MHz using high impedance probe.

Verify U101 Pin10(reset) is high.



4. Regulator fault Verify U506 Pin 4 is 3.3V

Verify U505 Pin 4 is 5.0V














3. Audio Amp IC notstarting up

Verify U601 Pin 6 is battery voltage.

If battery voltage is being supplied to Pin 6, then verify audio output at Pin 5 & 8.



1. IF IC dead or fault Verify clock input to U201 Pin 1 & 2 is 44.645Mhz using high impedance probe.



Check/Replace Q304

12-2 UHF1 Troubleshooting Tables: Troubleshooting Table for Synthesizer (UHF1)

12.2 Troubleshooting Table for Synthesizer (UHF1) Table 12-2. Troubleshooting Table for Synthesizer (UHF1)








3. No RX–Enable Verify U101 Pin 71 (RX–EN1) is high.







Repair/Replace U701







3. No TX–Enable Verify U101 Pin 84(TX–EN1) is high when PTT is pressed.



Check U101–Pin 85 is high/Replace Q407/check LK2 is short




Repair/Replace U701

UHF1 Troubleshooting Tables: Troubleshooting Table for Transmitter (UHF1) 12-3

12.3 Troubleshooting Table for Transmitter (UHF1) Table 12-3. Troubleshooting Table for Transmitter (UHF1)





Replace Mic.

2. Mic bias fault Verify U101 Pin 78 is 1.1V when PTT button is pressed.

Check/Replace U101









1.PTT switch defective Verify U101 Pin 44 is low when PTT is pressed.



1. Synthesizer out of lock Refer to Table 12-2. Check U101 operating

2. No TX–Enable Verify U101 Pin 84 (TX–EN1) is high when PTT is pressed.


Check U101 Pin 85 is high/








Replace Q404


Verify U401 Pin 7 is near 0V Replace Q403







Check conducted power Re-tune power using tuner.





Replace antenna


12.4 Troubleshooting Table for Board and IC Signals (UHF1) Table 12-4. Troubleshooting Table for Board and IC Signals (UHF1)



2 Osc2 3.3

4 VCC 4.7




15 GND 0



4 VCC 3.3

6 GND 0

7 XF IN 2.2

8 F IN 2.2

12 Power save High

13 GND 0


15 @P 2.4

16 @R Low



3 IN+ 3.8

4 IN- 3.8

5 OUT- 3.8


7 GND 0

8 OUT+ 3.8

U103 1 IN+ 1.6

UHF1 Troubleshooting Tables: Troubleshooting Table for Board and IC Signals (UHF1) 12-5


3 GS 1.6

4 Vref 1.6

8 OSC1 1.6 3.579545 MHz input

10 VSS 0

11 TOE 3.3


18 EST 3.3

19 ST/GT 3.3

20 VDD 3.3


2 GND 0


4 VCC 5






C RX_B+ 4.7


B RX_EN High

C To Q304 base Low


B TX_EN1 High

C To Q706 base Low



C TXVB 4.7


B TX_EN2 High

C To Q407 Low




Q601 E GND 0


None Mute: High

C Mode Mute: High

None Mute: Low




Chapter 13 UHF1 Schematic Diagrams, Overlays, and Parts Lists








13-2 UHF1 Schematic Diagrams, Overlays, and Parts Lists: Introduction












Name Description




















UHF1 Schematic Diagrams, Overlays, and Parts Lists: Speaker and Microphone Schematic 13-3









Plating (Au)


Copper

Copper


PrePreg.

CCL (core)

PrePreg.

MIC1

SPK1

1

2

1

2




13.

Figu

3 Circuit Board/Schematic Diagram and Parts List (UHF1: 403–447 MHz)

re 13-3. UHF1 (403–447 MHz) Receiver Schematic Diagram




Figu




Figu




Figu


ure 13-10. UHF1 (403–447 MHz) Mainboard Top Side: PCB No. 8431BEAUHF300
Fig
J603

C61

6R

615

R608R619

R617R616

C62

1

R62

3

R60

9

Q602PB501

C573 R433

Q408

C602

C460

C471C472

R426R427C435 C454

C411 R414

C463C462

C465

R41

1R

440

Q40

5

C380

C320

C339 U202

C38

2

R21

0

R22

0

R20

3R

250

R212R211

R216

C33

4

C1017

R314R318

Q202

Q207

C574

PB503

PB502

R316

R213R208C209C210

C213

C20

6C

204

C21

4

C11

6C

115

C14

5C

146

R11

5

R18

5R

148

TP9U101

TP10

C1039

C106

C198

C1027

C10

22C

1016

R10

04R

1005

R10

06C1026C1025

C10

5C

104

C10

7C

1024

C10

38

R138

R134R132

R116

R11

0

R117

R168

R206R207

R16

5R

167

R16

3

R13

3R

135

R11

8

R14

6R14

5R164

R16

9

Q111

Q112

C1021C1019

CR117C138

CR116

Q114

R111

R137

R149

R12

2

R12

8

R12

1

C109

C12

9C

158

R12

6

R13

6

C12

5

C10

30C

156

C11

0

R12

7C

136

C10

23

C13

4

C13

9

C1029

Q103

Q113Q104Q102

C126C539 C

538

C74

6

C756C747

C73

8C

748

C75

2 C74

9R

718

R71

6

R72

8R

727

C741

C750

C753

C751

C755

Q707

Q708

Q711

R717

Q710

C754R740R726

R729

R73

5R

736

R73

7

TP11

Q709

R731R720

R730R721

R722R723

R724R725

R719

R73

3

U701

L709

R73

2

Q503

SH102C128

C130C157

R129

R204R217

C127

C135

C137

C10

31

C10

37

TP4

TP3

FL101

TP8

TP2

TP6TP5

TP7

J102

C576

C577

R520R521

R506

R504R526

C530C537

C536R527 R

528

R52

3

R52

4C

533

R505

R503

C515

C510

C512R141R140C120

C119C1028

C511

C516C740C739

R14

2

R73

4 C57

2

U50

7

C12

1R541C531

C545

U502

U103

R519

C583C578

C551

C52

8TP1

C20

8

CR201

U105

Q206

FL102

CR

202

C211 RT201

R31

7

R34

2C

381

CR

306

DEC1

C570

C378

Q101

Q404

R41

2C

464

C40

6R

413

RT501

C468

C635 C634

SH103

Q403

R425

8431BEAUHF300UHF R&TTE Rev#MP01

C43

7

C45

3

C57

1R

507

L413

C62

2

L604

L601

L602

C63

3

C43

2R

424

R42

2R

418

L603

C636

L605C63

2

C63

1

J601

C461

LK2

Q407U401

J105

C623

U402

C47

3

C469C470

Q406

R44

1

R421 R419R420C433R423

R417

R43

1

R43

2C

436

C62

4

C62

5

C43

9

C60

1

Q601


Figu
re 13-11. UHF1 (403–447 MHz) Mainboard Bottom Side: PCB No. 8431BEAUHF300
ANT4 ANT1

ANT2

R416C431

C429

L409

L411

R415

L325

L320

L324

Q301

L321

L328

R330

C609

C540

C61

9C

615C57

9C

580 C

582

C58

1C

620

C60

6

C61

8

C605R62

2

R61

4

R610

R613

R621R620

U601

C309

C363C379

C356

C389

C329C384

C32

6L3

10L3

31R

340

C388

C365C325

C343

Q30

5

Q30

4C344

C143R177

R715

R173

R17

2R

175

R31

5 R31

2

C31

9C

376

C33

7C

203

C20

1

C20

7C

112

C34

0

C33

2

C33

8FL

301

C34

2R31

9

R25

8C

347

C37

7

R176

Q121Q120 Q122

L327

R311

C341

U201

Q201CF2CF1

FL201

Q303

CR316

R338C390

C330C331L340L333

L332

CR312CR315

C1033

C10

32

C11

1 C15

4

C10

3

R10

03

R10

01R

143

R14

4C

113

C11

7C

114

C10

20

C50

1

C19

1

R17

4 R17

1

C32

7

C386

C38

5R

241

C387

Q308L329

R343R309

R31

0

L306

L334

L323

C364

C35

8C

318 C35

5C36

2

R334R333

CR313 J602

CR

305

C31

2

L304

L412

L301

CR

401

C466

C357

C301 C30

3C

360

C38

3R

339

R32

3R

320R

302

C35

1

C47

4

C30

7

C31

0C

361

CR

314

CR307

CR310

CR309

C445

C422C420

C43

0

C42

8C

427

C42

6C

446

C45

1

C41

9

C42

3

C45

2

C41

6

C41

8

C41

3L4

05

C417

L406

L403

L402

L401

C410

Q402

Q401

Q409 C444C448

C731R714C728

C701C715

C706R704

C71

9

C71

1

C72

6C

724

C730C729

C716

R709C718

C721C723

C722

C712

C710

C101C102

C153

L703

L704

R162R101

R181R103R102R151R150

R104R105R106

R54

0R

139 C

503

C50

6

C54

1

C14

4

R113

R131R184

R180R179R182R183R190

R178

R532R533

R534R535

R530

R531R529R152R195

R120

R114TP15

TP16

TP14

TP13

U107

R153

R15

4

C14

7

CR

502 C124

C100

C118

C123C195

CR101

C194

C502

C509

C508C507

R193

R194

C172C169

C168C167C166

C161C178C179

R512

R513C546

C521C549

U501

U508

C177C529C548C525

R107C519C550

C547C575

C542R517R538

R518

R516C524C544

C523R509R508

R51

4

R51

5

R53

6C

527

C51

8R

510

R51

1C

520

R53

9C

522

C54

3

C517

C173

C170C171C165

C162C163

C140

C14

1

C14

2

C16

4C

189

C18

8

C1034

C10

36C

1035

Q504Q505

R537U104

FL701

U505U

506

U106

U102

R1002

C70

7

C70

9C

705

R70

5

CR701CR702

C725SH101

C727R712

R71

3L7

05

CR

703

C717C714

Q705Q702

Q701

Q706Q703

Q704

L706

L702

L701

C70

2C

704

R70

1R70

2R70

6

R70

8R

711 R

710

R70

3L707

R70

7L7

08

C449C44

0R

436

R43

4

R40

1R

403

C447

C401

C467

C405C404

R405

L407

R435

R404

R407

R402

R408

C409

C434R430

R409R410R406

C408C403C402

R429R428

SH

104

CR

301

CR

311S

H10

5

L410

ANT3


12. UHF1 (403–447 MHz) Sub Circuit Board Top View: PCB No. 8421BEACON100

C56

5

C56

6

C560

C561

Figure 13-

R501 R502

CR501

C56

3

C56

4

C56

2

Q501 Q502


Figu

SW / VOL1

re 13-13. UHF1 (403–447 MHz) Sub Circuit Board Bottom View: PCB No. 8421BEACON100

SW1

J104


Figure 13-14. UHF1 (403–447 MHz) Keypad Board: PCB No. 8422BEACON100

R119

R157

R112

R109

R158

R156

R159R160R161R198

R197R196

C1011

C1004

C187C174

C175C176

C1018

J101

R155

Q11

0

C1005R147R199

C1010

C1009

SH201

C1008

R108

C1014C1013

C1012

C1006C1003C1002C1007

J103

C1015

MIC1

CR110

CR114

CR112 CR113

CR115

CR111

SH202

C1001


13.3

CiR

C1

C1

C1

C1

C1

C1

C1

C1

C1

C1

C1

C1

C1

C1

C1

C1

C1

C1

C1

C1

C1

C1

C1

C1

C1

C1

C1

C1

C1

C1

μF

F

F

F

F

F

F

F

F

F

F

F

F

F

F

F

F

F

F

F

F

C176 TDK N/A Chip Cap,1005 J 220PF




C187 TDK N/A Chip Cap,1005 Z 0.1μF




C194 HITACH N/A Chip Tantal, 10μF-M/16V(A)





C206 TDK N/A Chip Cap,1005 K 0.1μF



C209 TDK N/A Chip Cap,1005 K 470PF





C301 TDK N/A Chip Cap,1005 D 8PF

C303 TDK N/A Chip Cap,1005 C 5PF

C307 TDK N/A Chip Cap, 1005 J 12PF




C319 TDK N/A Chip Cap,1005 K 10nF






.1 Parts List


00 TDK N/A Chip Cap, 1608 Z 1μF

01 TDK N/A Chip Cap, 1005 K 1μF

02 TDK N/A Chip Cap, 1005 K 2.2nF

03 TDK N/A Chip Cap, 1005 J 33PF

04 TDK N/A Chip Cap, 1005 J 150 PF

05 TDK N/A Chip Cap, 1005 K 15nF


07 TDK N/A Chip Cap,1005 K 0.1μF

09 TDK N/A Chip Cap,1005 K 22nF


11 TDK N/A Chip Cap, 1005 K 1μF

121 HITACH N/A Chip Tantal, 10μF-M/16V(A)

131 TDK N/A Chip Cap,1005 K 560PF

141 TDK N/A Chip Cap,1005 J 220PF








23 TDK N/A Chip Cap,1005 Z 0.1μF












C138 TDK N/A Chip Cap, 1608 K 0.22

C139 KAMAYA N/A Chip Res, 1005 J 10KW

C140 TDK N/A Chip Cap, 1006 K 47nF

C142 TDK N/A Chip Cap,1005 K 470P






C153 TDK N/A Chip Cap, 1005 K 0.1μ

C154 TDK N/A Chip Cap, 1005 K 0.1μ

C156 TDK N/A Chip Cap,1005 K 0.22μ



C161 TDK N/A Chip Cap,1005 J 220P

















PF

F

PF

PF

F

nF

0PF

PF

PF

μF

nF

PF

PF

PF

F

F

PF

F

PF

F

F

F

F

F

F

0PF

7nF

μF

μF

F

0PF

n









C454 HITACH N/A Chip Tantal, 22μF-M/16V(B)






















C510 TDK N/A Chip Cap, 2012 Z 4.7μF





C332 MURATA N/A Chip Cap, 1005 J 11PF



C338 TDK N/A Chip Cap, 1006 K 47nF


















C365 KAMAYA N/A Chip Res, 1005 J 0?










C386 TDK N/A Chip Cap,1005 J 12

C387 TDK N/A Chip Cap,1005 D 8P

C388 TDK N/A Chip Cap,1005 D 10


C401 TDK N/A Chip Cap,1005 C 3P

C402 TDK N/A Chip Cap,1005 K 10


C404 TDK N/A Chip Cap, 1005 J 56


C406 TDK N/A Chip Cap,1005 Z 0.1















C431 TDK N/A Chip Cap,1608 J 1nF

C432 TDK N/A Chip Cap,1005 K 1n


C435 TDK N/A Chip Cap, 1006 K 4



C439 TDK N/A Chip Cap,1005 K 1n




C5

C5

C5

C5

C5

C5

C5

C5

C5

C5

C5

C5

C5

C5

C5

C5

C5

C5

C5

C5

C5

C5

C5

C5

C5

C5

C5

C5

C5

C5

C5

C5

CiR

F

F

μF

6V(A)

F










C706 TDK N/A Chip Cap, 1005 D 9PF



C710 MURATA N/A Chip Trimmer Cap, 2PIE 6PF

C711 MURATA N/A Chip Cap, 1005 J 16PF





C717 TDK N/A Chip Cap, 1005 C 3PF




C722 MURATA N/A Chip Trimmer Cap, 2PIE 6PF

C723 TDK N/A Chip Cap, 1005 C 0.5PF





























37 TDK N/A Chip Cap, 1005 K 2.2μF



40 TDK N/A Chip Cap, 1608 Z 0.1μF






47 TDK N/A Chip Cap, 1005 K 2.2μF




























C605 TDK N/A Chip Cap, 2012 Z 4.7μ



C615 TDK N/A Chip Cap, 1608 K 0.22



C618 HITACH N/A Chip Tantal, 4.7μF-M/1


C620 TDK N/A Chip Cap,1005 K 330P



0PF

PF

PF

PF

PF

PF

PF

PF

PF

PF

PF

PF

PF

PF

PF

PF

PF

PF

PF

PF

PF

PF

er,

er,

036D-TR

036D-TR

036D-TR

036D-TR

036D-TR

036D-TR

n

CR116 KEC N/A SWITCH DIODE, KDS-160E (ESM)


CR201 KEC N/A Switch DIODE, KDS 181



CR305 KEC N/A VARIABLE DIODE, KDV154E (ESM)



CR309 KEC N/A Switch DIODE, KDS 114E (ESD)

CR310 KEC N/A Switch DIODE, KDS 114E (ESD)





CR316 BGTech 8157MS2829020 Schotty DIODE, HSMS-2829

CR401 M/A COM N/A PIN DIODE, MA4P7001F-1072T

CR501 BRIGHT LED N/A LED DIODE, BL-HEIG033B-TR




DEC1 BGTech 8287455C24010 CP, Desciminator, JTBC455C24


C738. TDK N/A Chip Cap, 1005 D 7PF







C749 TDK N/A Chip Cap, 1608 Z 0.1μF




C753 PANASONIC N/A Film Chip Cap, 3216 J 47nF

C754 PANASONIC N/A Film Chip Cap, 3216 J 47nF











































CF1 BGTech 8286045500120 TOKO, Ceramic FiltELFY455F

CF2 BGTech 8286045500220 TOKO, Ceramic FiltELFY455H

CR110 Bright LED N/A LED DIODE, BL-HG








F-CA

F-CA

FL1

FL1

FL2

FL3

FL7

J10

J10

J10

J10

J10

J60

J60

J60

L30

L30

L30

L31

L32

L32

L32

L32

CiR

L706 DAERIM N/A COIL AIR, 0.30-1.1-3TL(SMD)

L707 TAIYOYUDEN N/A Chip Ind, 1608 220nH J

L708 TAIYOYUDEN N/A Chip Ind, 1005 J 27nH


LCD1 BGTech 86343208A2020 EVERRVIEW,VBS3208A2-7FWLYA,REV4.0

MIC1 BGTech 8420063215000 BSE, C-MIC, 6.0*2.7/2.2KW,2V,-44±3dB, Pin type




Q101 KEC N/A KRC 413 BJT NPN Transistor





Q111 KEC N/A KTA 2014 BJT PNP Transistor

Q112 KEC N/A KTA 2014 BJT PNP Transistor










Q301 HITACH N/A 2SC4901 BJT NPN Transis-tor


BLE1BGTech 8560228005000 SNAGGWA, BEACON FLAT

CABLE, FF12-22N080XXA

BLE2BGTech 8560124005001 SNAGGWA, BEACON FLAT

CABLE, FF12-12N040XXA

01 BGTech 82827R3728M00 SHINSUNG, Crystal, 7.3728MHz (H: 2.8mm)

02 BGTech 82827R5795M00 SHINSUNG, Crystal, 3.5795MHz (H: 2.8mm)

01 BGTech 828244R645M00 SHINSUNG, Crystal, 44.645MHz (SMD)

01 BGTech 828645R100220 SHINSUNG, Crystal, MCF 45.15S12.B (8.5KHz)

01 BGTech 8289012R80010 SHINSUNG, VCTCXO, 12.8 MHZ

1 BGTech 851607C01S110 YUNHO, FPC CONNECTOR, 05004HR-07C01S(G)

2 BGTech 851622A01S110 YUNHO, FPC CONNECTOR, 05004HR-22A01S

3 BGTech 8516220005020 KYOCERA, FPC CONNEC-TOR, 04-6292-022-000-800+

4 BGTech 851612151A110 OMIRON, FPC CONNEC-TOR, XF2M-1215-1A

5 BGTech 8516220R50100 MOLEX, FPC CONNEC-TOR, 52745-1297

1 BGTech 8500031009800 CHI CHENG, SPK MIC JACK, 0980683Z01-D

2 BGTech 85100G500PL00 SUYIN, BATTERY CONNEC-TOR, 060031MA005G500PL

3 BGTech 8510530470210 MOLEX, CONNECTOR, 53047-0210

1 DAERIM N/A COIL AIR, 0.45-1.4-5TL(SMD)

4 TAIYOYUDEN N/A Chip Ind, 1005 J 39N



0 DELTA N/A Chip Ind, 2012 27nH





L327 TAIYOYUDEN N/A Chip Ind,1608 K 820NH

L328 DELTA N/A Chip Ind, 2012 27nH


L331 TAIYOYUDEN N/A Chip Ind, 1005 J 22N

L332 TAIYOYUDEN N/A Chip Ind,1608 K 220NH


L334 KAMAYA N/A Chip Res, 1005 J 0?

L340 DELTA N/A Chip Ind, 2012 820nH




L405 TAIYOYUDEN N/A Chip Ind, 1608 6.8nH J








L601 TAIYOYUDEN N/A Chip Ind, 1608 K 2.2uH












ransistor

Transis-

Transis-

Transis-

Transis-

ransistor

KW

KW

0KW

KW

KW

KW

9KW

7KW

7KW

0KW

7KW

KW

KW

KW

2KW

2KW

KW

7KW

KW

0KW

0KW

KW

KW

n

R128 KAMAYA N/A Chip Res, 1005 J 3.9KW

R129 KAMAYA N/A Chip Res, 1005 J 150KW

R131 KAMAYA N/A Chip Res, 1005 J 10W




R134 KAMAYA N/A Chip Res, 1005 J 3.9MW

R135 TDK N/A Chip Cap,1005 K 0.1μF










R145 KAMAYA N/A Chip Res, 1005 J 1MW





R150 KAMAYA N/A Chip Res, 1005 F 10KW











Q303 NEC N/A 2SC4226 BJT NPN Transis-tor

Q304 KEC N/A KRA 305 BJT PNP Transistor



Q401 BGTech 8142000951120 PBR 951LT1 PHILIPS BJT NPN Transistor

Q402 BGTech 8149003078021 2SK3078A TOSHIBA FET N-channel Transistor

Q403 BGTech 8149003476021 2SK3476 TOSHIBA FET N-channel Transistor

Q404 BGTech 8145001188021 STB 1188 AUK BJT NPN Transistor

Q405 KEC N/A KTC 4075 BJT NPN Transis-tor


















Q706 KEC N/A KRA 305 BJT PNP T

Q707 KEC N/A KTC 4075 BJT NPNtor

Q708 KEC N/A KTA 2014 BJT PNPtor

Q709 KEC N/A KTA 2014 BJT PNPtor

Q710 KEC N/A KTC 4075 BJT NPNtor

Q711 KEC N/A KRA304 BJT PNP T

R101 KAMAYA N/A Chip Res, 1005 J 10






R107 KAMAYA N/A Chip Res, 1005 J 3.



















R1

R1

R1

R1

R1

R1

R1

R1

R1

R1

R1

R1

R1

R1

R1

R1

R1

R1

R1

R1

R1

R1

R1

R1

R1

R1

R1

R1

R1

R1

R1

R2

CiR

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W


R343 TAIYOYUDEN N/A Chip Ind, 1005 J 2.2uH

















R417 ROHM N/A Chip Res, 1W J 2512 0.1W

R418 KAMAYA N/A Chip Res, 1608 D 220KW














60 KAMAYA N/A Chip Res, 1005 J 47KW


62 KAMAYA N/A Chip Res, 1005 J 820W






69 KAMAYA N/A Chip Res, 1005 J 1.2KW





























R210 KAMAYA N/A Chip Res, 1005 J 120K



R213 KAMAYA N/A Chip Res, 1005 J 3.3K



























KW

KW

KW

KW

KW

KW

KW

KW

KW

0KW

W

8KW

0KW

KW

0KW

W

2W

KW

0KW

2W

KW

KW

KW

0W

W

5KW

7KW

7KW

0W

0W

n


R708 KAMAYA N/A Chip Res, 1005 F 4.7KW

R709 KAMAYA N/A Chip Res, 1005 F 6.8KW










































R504 NOBLE N/A CHIP SEMI V.R, 3PIE 47 KW




















R526 NOBLE N/A CHIP SEMI V.R, 2PIE 47 KW






























R703 KAMAYA N/A Chip Res, 1005 F 4.

R704 KAMAYA N/A Chip Res, 1005 F 4.





R1

R1

R1

R1

R1

RT

RT

SH

SH

SH

SH

SH

SH

SH

SP

SWVO

U1

U1

U1

U1

U1

U1

U1

U2

U2

U4

U4

U5

U5

CiR

E-

V1-G-

B,

B,

B,

Note:1: Not for PMUE3323AAL






201 TAIYOYUDEN N/A Thermistor, 103K

501 TAIYOYUDEN N/A Thermistor, 103K

101 BGTech 8860BEACA1010 Shield CAN, VCO

102 BGTech 8860BEAC93010 Shield CAN, PLL

103 BGTech 8660BEACA4010 Shield CAN, PA

104 MOTOROLA PMDN4150AR Finger Strip, T PCB

105 MOTOROLA PMDN4149AR Finger Strip TX

201 MOTOROLA PMDN4151AR Finger Strip – Pair

202 MOTOROLA PMDN4152AR Finger Strip - Single SMD

K1 BGTech 8400362424100 Speaker, 24W 1.0W 36q(Connector type)

/L1

BGTech 84766N992N151 TOKOS, Switch Volume RY-8418

01 BGTech 81100303RF020 CPU IC

02 BGTech 8116AK2347020 AUDIO LSI, AK2347

03 BGTech 8192088L70020 DTMF RECEIVER, MT88L70

04 BGTech 811324LC64020 EEPROM IC, 24LC64

05 BGTech 8124000324011 OP AMP, NJM324

06 BGTech 8135TC7S66020 Analog SW IC, TC7S66FU

07 BGTech 81287027AT020 VOLTAGE DETECTOR, KIA7027AT

01 BGTech 8125311360020 FM IC, TA31136

02 BGTech 8191401150220 DIGITAL POTENTIOME-TER, MCP4011(502)

01 BGTech 8124000358011 OP AMP (DUAL), KIA358

02 BGTech 8191401150220 DIGITAL POTENTIOME-TER, MCP4011(502)

01 BGTech 8124000324011 OP AMP, NJM324

02 BGTech 8124000324011 OP AMP, NJM324


U505 BGTech 8123011250021 REGULATOR IC, TK11250AMTL

U506 BGTech 8123011233020 REGULATOR IC, TK11233AMTL

U507 BGTech 8128TC1240020 VOLTAGE DOUBLER, TC1240

U508 BGTech 8191401150320 DIGITAL POTENTIOMTER, MCP4011(503)

U601 BGTech 811608541T020 AUDIO AMP, TDA8541

U701 BGTech 810415E03S020 PLL IC, MB15E03SLPFBND-EF-6

PCB1 BGTech 8431BEAUHF300 CAFSYSTEM, Main PCFR4 4 Layer PCB

SUB PCB1

BGTech 8421BEACON100 CAFSYSTEM, Sub PC1.2T 2 Layer

KEY PCB1

BGTech 8422BEACON100 CAFSYSTTEM, Key PC1.2T 2Layer


Appendix A Warranty, Service Support, and Replacement Parts

A.1 Scope of ManualThis manual is intended for use by service technicians familiar with similar types of equipment. It contains service information required for the equipment described and is current as of the printing date. Changes which occur after the printing date may be incorporated by a complete Manual revision or alternatively as additions.

A.2 Warranty

A.2.1 What This Warranty Covers And For How LongMOTOROLA INC. (“MOTOROLA”) warrants the MOTOROLA manufactured CommunicationProducts listed below (“Product”) against defects in material and workmanship under normal use andservice for a period of time from the date of purchase as scheduled below:

Motorola, at its option, will at no charge either repair the Product (with new or reconditioned parts),replace it (with a new or reconditioned Product), or refund the purchase price of the Product duringthe warranty period provided it is returned in accordance with the terms of this warranty. Replacedparts or boards are warranted for the balance of the original applicable warranty period. All replacedparts of Product shall become the property of MOTOROLA.

This express limited warranty is extended by MOTOROLA to the original end user purchaser onlyand is not assignable or transferable to any other party. This is the complete warranty for the Productmanufactured by MOTOROLA. MOTOROLA assumes no obligations or liability for additions ormodifications to this warranty unless made in writing and signed by an officer of MOTOROLA. Unless made in a separate agreement between MOTOROLA and the original end user purchaser,MOTOROLA does not warrant the installation, maintenance or service of the Product.

MOTOROLA cannot be responsible in any way for any ancillary equipment not furnished by MOTOROLA which is attached to or used in connection with the Product, or for operation of theProduct with any ancillary equipment, and all such equipment is expressly excluded from this warranty. Because each system which may use the Product is unique, MOTOROLA disclaims liability for range, coverage, or operation of the system as a whole under this warranty.

A.2.2 General ProvisionsThis warranty sets forth the full extent of MOTOROLA'S responsibilities regarding the Product.Repair, replacement or refund of the purchase price, at MOTOROLA's option, is the exclusive

Note: Before operating or testing these units, please read the Product Safety and RF ExposureCompliance section in the front of this manual.

Table A-1. Portable Radios and Product Accessories Warranty

EP350 Portable Radios Two (2) Years

Product Accessories (including Batteries and Chargers) One (1) Year

A-2 Warranty, Service Support, and Replacement Parts: Warranty

remedy. THIS WARRANTY IS GIVEN IN LIEU OF ALL OTHER EXPRESS WARRANTIES. IMPLIEDWARRANTIES, INCLUDING WITHOUT LIMITATION, IMPLIED WARRANTIES OFMERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE LIMITED TO THEDURATION OF THIS LIMITED WARRANTY. IN NO EVENT SHALL MOTOROLA BE LIABLE FORDAMAGES IN EXCESS OF THE PURCHASE PRICE OF THE PRODUCT, FOR ANY LOSS OFUSE, LOSS OF TIME, INCONVENIENCE, COMMERCIAL LOSS, LOST PROFITS OR SAVINGSOR OTHER INCIDENTAL, SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THEUSE OR INABILITY TO USE SUCH PRODUCT, TO THE FULL EXTENT SUCH MAY BEDISCLAIMED BY LAW.

A.2.3 How To Get Warranty ServiceYou must provide proof of purchase (bearing the date of purchase and Product item serial number in order to receive warranty service and, also, deliver or send the Product item, transportation andinsurance prepaid, to an authorized warranty service location. Warranty service will be provided byMotorola through one of its authorized warranty service locations. If you first contact the companywhich sold you the Product, it can facilitate your obtaining warranty service. You can also open aContact Us case on Motorola Online (www.motorola.com/businessonline).

A.2.4 What This Warranty Does Not Cover• Defects or damage resulting from use of the Product in other than its normal and customary• manner.• Defects or damage from misuse, accident, water, or neglect.• Defects or damage from improper testing, operation, maintenance, installation, alteration,• modification, or adjustment.• Breakage or damage to antennas unless caused directly by defects in material workmanship.• A Product subjected to unauthorized Product modifications, disassemblies or repairs (including,• without limitation, the addition to the Product of non-Motorola supplied equipment) which• adversely affect performance of the Product or interfere with Motorola's normal warranty• inspection and testing of the Product to verify any warranty claim.• Product which has had the serial number removed or made illegible.• Rechargeable batteries if:

- any of the seals on the battery enclosure of cells are broken or show evidence of tampering.

- the damage or defect is caused by charging or using the battery in equipment or service other than the Product for which it is specified.

• Freight costs to the repair depot.• A Product which, due to illegal or unauthorized alteration of the software/firmware in the

Product,• does not function in accordance with MOTOROLA’s published specifications or the FCC• type acceptance labeling in effect for the Product at the time the Product was initially distributed• from MOTOROLA.• Scratches or other cosmetic damage to Product surfaces that does not affect the operation of• the Product.• Normal and customary wear and tear.

Warranty, Service Support, and Replacement Parts: Warranty A-3

A.2.5 Patent And Software ProvisionsMOTOROLA will defend, at its own expense, any suit brought against the end user purchaser to theextent that it is based on a claim that the Product or parts infringe a United States patent, andMOTOROLA will pay those costs and damages finally awarded against the end user purchaser inany such suit which are attributable to any such claim, but such defense and payments areconditioned on the following:

• that MOTOROLA will be notified promptly in writing by such purchaser of any notice of suchclaim

• that MOTOROLA will have sole control of the defense of such suit and all negotiations for itssettlement or compromise

• should the Product or parts become, or in MOTOROLA's opinion be likely to become, thesubject of a claim of infringement of a United States patent, that such purchaser will permitMOTOROLA, at its option and expense, either to procure for such purchaser the right tocontinue using the Product or parts or to replace or modify the same so that it becomesnoninfringing or to grant such purchaser a credit for the Product or parts as depreciated andaccept its return. The depreciation will be an equal amount per year over the lifetime of theProduct or parts as established by MOTOROLA.

MOTOROLA will have no liability with respect to any claim of patent infringement which is basedupon the combination of the Product or parts furnished hereunder with software, apparatus ordevices not furnished by MOTOROLA, nor will MOTOROLA have any liability for the use of ancillaryequipment or software not furnished by MOTOROLA which is attached to or used in connection withthe Product. The foregoing states the entire liability of MOTOROLA with respect to infringement ofpatents by the Product or any parts thereof.

Laws in the United States and other countries preserve for MOTOROLA certain exclusive rights forcopyrighted MOTOROLA software such as the exclusive rights to reproduce in copies and distributecopies of such Motorola software. MOTOROLA software may be used in only the Product in whichthe software was originally embodied and such software in such Product may not be replaced,copied, distributed, modified in any way, or used to produce any derivative thereof. No other useincluding, without limitation, alteration, modification, reproduction, distribution, or reverseengineering of such MOTOROLA software or exercise of rights in such MOTOROLA software ispermitted. No license is granted by implication, estoppel or otherwise under MOTOROLA patentrights or copyrights.

A-4 Warranty, Service Support, and Replacement Parts: Warranty

A.2.6 Piece Parts

Some replacement parts, spare parts, and/or product information can be ordered directly. If a complete Motorola part number is assigned to the part, it is available from Motorola’s Managed Technical Services (MTS). If no part number is assigned, the part is not normally available from Motorola. If the part number is appended with an asterisk, the part is serviceable by Motorola Depot only. If a parts list is not included, this generally means that no user-serviceable parts are available for that kit or assembly.

All orders for parts/information should include the complete Motorola identification number. Request for help in identification of non-referenced spare parts should be directed to the Motorola’s local area representation. When damaged parts are replaced, identical parts should be used. If the identical replacement part is not locally available, check the parts list for the proper Motorola part number. Orders for replacement parts which are listed in the “Parts List” section of this manual, should be placed directly on Motorola’s local distribution organization or via Motorola Online (Extranet).

Glossary of Terms

Term Definition

ALC Automatic Level Control: a circuit in the transmit RF path that controls RF power amplifier output, provides leveling over frequency and voltage, and protects against high VSWR (Voltage Standing Wave Ratio).

ASFIC Audio Signalling Filter Integrated Circuit

BKC Bad Key Chirp

CD Compact Disk

CMP Compression

CPS Customer Programming Software

CSQ Carrier Squelch

DTMF Dual-Tone Multifrequency

DPL Digital Private-Line™

EEPROM Electronically Erasable/Programmable Read-Only Memory: used by the radio to store its personality

EPP Environmental Preferred Product

Firmware Software, or a software/hardware combination of computer programs and data, with a fixed logic configuration stores in a read-only memory. Information cannot be altered or reprogrammed.

FGU Frequency Generation Unit

GaAs Gallium Arsenide: a type of crystalline material used in some semiconductors.

GKC Good Key Chirp

ISW Inbound Signalling Word: data transmitted on the control channel from a subscriber unit to the central control unit.

LH DATA Longhorn Data: a bidirectional 0-5V, RS-232 line protocol that uses the microcontroller’s integrated RS-232 asynchronous serial communications interface (SCI) peripheral.

LLE Low Level Expander: slight amount of volume expansion; used to improve the signal to noise ratio.

MCU Micro Controller Unit

MRTI Motorola Radio-Telephone Interconnect: a system that provides a repeater connection to the Public Switched Telephone Network (PSTN). The MRTI allows the radio to access the telephone network when the proper access code is received.

OMPAC Over-Molded Pad-Array Carrier: a Motorola custom package, distinguished by the presence of solder balls on the bottom pads.

PC Board Printed Circuit Board

G-2

PL Private-Line® tone squelch: a continuous sub-audible tone that is transmitted along with the carrier.

PLL Phase-Locked Loop: a circuit in which an oscillator is kept in phase with a reference, usually after passing through a frequency divider.

PTT Push-To-Talk: the switch located on the left side of the radio; when pressed, causes the radio to transmit.

RAM Random Access Memory: the radio’s RAM is loaded with a copy of the EEPROM data.

Registers Short-term data-storage circuits within the microcontroller.

RESET Reset line: an input to the microcontroller that restarts execution.

RF PA Radio Frequency Power Amplifier

ROM Read Only Memory

RSSI Received Signal-Strength Indicator: a dc voltage proportional to the received RF signal strength.

RPT/TA Repeater/Talk-Around

Softpot A computer-adjustable electronic attenuator

Software Computer programs, procedures, rules, documentation, and data pertaining to the operation of a system.

SPI (clock and data lines)

Serial Peripheral Interface: how the microcontroller communicates to modules and ICs through the CLOCK and DATA lines.

Squelch Muting of audio circuits when received signal levels fall below a pre-determined value.

Standby Mode An operating mode whereby the radio is muted but still continues to receive data

TOT Time-Out Timer: a timer that limits the length of a transmission.

TPL Tone Private-line

µC Microcontroller

µP Microprocessor

UHF Ultra High Frequency

VCO Voltage-Controlled Oscillator: an oscillator whereby the frequency of oscillation can be varied by changing a control voltage.

VCOBIC Voltage-Controlled Oscillator Buffer Integrated Circuit

VHF Very High Frequency

VSWR Voltage Standing Wave Ratio

Term Definition

© 2009 Motorola Inc. All rights reserved.Motorola Technology Sdn Bhd (Co. No. 455657-H)Plot 2 Bayan Lepas Technoplex Industrial ParkMukim 12 S.W.D11900 Penang, Malaysia

Printed in MalaysiaAugust 2009

6878422A01-B*6878422A01*

Documents

BSM front - Diagramasde.com · 2013. 5. 13. · EP350. Technical Information Updates ... (Motorola Publication part number 68007024010) to ensure compliance with RF energy exposure