Motorola Cm300 Manual

MCM200/CM300/PM400Radios

Detailed Service Manual6881098C00-A

ii

ForewordThis 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.

Computer Software CopyrightsThe 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 exexclusive right to ccopyrighted Motoronot be copied, reprwritten permission either directly or byapplications of Motthe sale of a produ

Document CNo duplication or dwritten permissionform or by any meMotorola.

DisclaimerThe information in responsibility is asproducts herein to of the applicationspatent rights nor th

MOTOROLA, The All other product o 2004, 2007 Moto

Note: Before operating or testing these units, please read the Product Safety and RF ExposureCompliance section.clusive rights for copyrighted computer programs, including, but not limited to, the opy or reproduce in any form the copyrighted computer program. Accordingly, any la computer programs contained in the Motorola products described in this manual may oduced, modified, reverse-engineered, or distributed in any manner without the express of Motorola. Furthermore, the purchase of Motorola products shall not be deemed to grant implication, estoppel, or otherwise, any license under the copyrights, patents or patent orola, except for the normal non-exclusive license to use that arises by operation of law in ct.

opyrightsistribution of this document or any portion thereof shall take place without the express of Motorola. No part of this manual may be reproduced, distributed, or transmitted in any ans, electronic or mechanical, for any purpose without the express written permission of

this document is carefully examined, and is believed to be entirely reliable. However, no sumed for inaccuracies. Furthermore, Motorola reserves the right to make changes to any improve readability, function, or design. Motorola does not assume any liability arising out or use of any product or circuit described herein; nor does it cover any license under its e rights of others.

Stylized M logo, and Radius are trademarks of Motorola, Inc.r service names are the property of their respective owners.rola, Inc. All rights reserved. Printed in U.S.A.

CM200/CM300/PM400Radios

Detailed Service Manual

Section 1

Section 2

Section 3

Section 4

Section 56881098C00-AContents

Service Maintainability

Control Head Service Information

UHF2 Low Power (1-25 W) Service Information (438-470 MHz)

UHF2 High Power (25-40 W) Service Information (438-470 MHz)

UHF3 High Power (25-40 W) Service Information (465-495 MHz)

NotesTHIS PAGE INTENTIONALLY LEFT BLANK


Service Maintainability

Issue: November, 2007

M

ii

Computer Software CopyrightsThe 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 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 or reproduced 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.

iii

Table of ContentsSAFETY INFORMATION .......................................................................................... v

Chapter 1 INTRODUCTION

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

2.1 Warranty Period and Return Instructions .......................................................1-12.2 After Warranty Period .....................................................................................1-1

3.0 Replacement Parts Ordering ...............................................................................1-23.1 Basic Ordering Information.............................................................................1-23.2 Mot3.3 Mai3.4 Tele3.5 Fax3.6 Par

4.0 Radio M

Chapter 2

1.0 Introdu2.0 Preven

2.1 Insp2.2 Clea

3.0 Safe H4.0 Genera5.0 Notes F

Chapter 3

1.0 Recom2.0 Test Eqorola Online ..............................................................................................1-2l Orders .....................................................................................................1-2phone Orders...........................................................................................1-2 Orders......................................................................................................1-2ts Identification ..........................................................................................1-3

odel Information......................................................................................1-3

MAINTENANCE

ction ..........................................................................................................2-1tive Maintenance ......................................................................................2-1ection .......................................................................................................2-1ning .........................................................................................................2-1

andling of CMOS and LDMOS..................................................................2-2l Repair Procedures and Techniques.......................................................2-2or All Schematics and Circuit Boards ......................................................2-5

SERVICE AIDS

mended Test Tools...................................................................................3-1uipment....................................................................................................3-2

iv

Notes

vSAFETY INFORMATIONProduct Safety and RF Exposure Compliance

ATTENTION!This radio is restricted to occupational use only to satisfy FCC 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 radio (Motorola Publication part number 68P81095C99) to ensure compliance with RF energy exposure limits.For a list of Motorolists approved acce

Note:Before using this product, read the operating instructions for safe usage contained in the Product Safety and RF Exposure booklet enclosed with your radio.la-approved antennas, batteries, and other accessories, visit the following web site which ssories: http://www.motorola.com/governmentandenterprise.

vi

Notes

Chapter 1

INTRODUCTION

1.0 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.

2.0 WarraMotorolaof the proAny "retuaccompaAuthorize

2.1 Warran

The termReseller guidance

In instancwarranty,This is todamage

Prior to sCustomeaccompaProductsdamage

2.2 After W

After the

1. Motorousers

2. Radio can be

* The RadiServices D

NOTE Before operating or testing these units, please read the Safety Information Section in thefront of this manual.nty and Service Support offers long term support for its products. This support includes full exchange and/or repair duct during the warranty period, and service/ repair or spare parts support out of warranty. rn for exchange" or "return for repair" by an authorised Motorola Dealer must be nied by a Warranty Claim Form. Warranty Claim Forms are obtained by contacting an d Motorola Dealer.

ty Period and Return Instructions

s and conditions of warranty are defined fully in the Motorola Dealer or Distributor or contract. These conditions may change from time to time and the following notes are for purposes only.

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

hipping any radio back to the appropriate Motorola warranty depot, please contact r Resources (Please see page 2 and page 3 in this Chapter). All returns must be nied by a Warranty Claim Form, available from your Customer Services representative. should be shipped back in the original packaging, or correctly packaged to ensure no occurs in transit.

arranty Period

Warranty period, Motorola continues to support its products in two ways.

la's Radio Products and Solutions Organization (RPSO) offers a repair service to both end and dealers at competitive prices.Products and Solutions Organization (RPSO) supplies individual parts and modules that purchased by dealers who are technically capable of performing fault analysis and repair.o Products and Solutions Organization (RPSO) was formerly known as the Radio Products ivision (RPSD) and/or the Accessories and Aftermarket Division (AAD).

1-2 INTRODUCTION

3.0 Replacement Parts Ordering

3.1 Basic Ordering InformationWhen ordering replacement parts or equipment information, the complete identification number should be included. This applied to all components, kits, and chassis. If the component part number is not known, the order should include the number of the chassis or kit of which it is a part, a sufficient description of the desired component to identify it.

3.2 Motorola OnlineMotorola ohttp://wwwTo register

3.3 Mail OrSend writte

3.4 TelephoRadio Prod(United Sta7:00 AM toMonday th1-800-4221-847-538U.S. Fede1-800-8738:30 AM to

3.5 Fax OrdRadio Pro(United S1-800-6221-847-576

USFGMD(Federal G1-800-526

ReplacemTest EquCrystal S

Motorola InRadio ProdOrganizatiAttention: O1307 E. AlSchaumbuU.S.A.nline users can access our on-line catalog at:.motorola.com/businessonline for online access, please call 800-814-0601 (for U.S. and Canada Service Centers only).

dersn orders to the following addresses:

ne Ordersucts and Solutions Organization*tes and Canada) 7:00 PM (Central Standard Time)rough Friday (Chicago, U.S.A.)-4210-8023 (International Orders)ral Government Markets Division (USFGMD)-4668 5:00 PM (Eastern Standard Time)

ersducts and Solutions Organization*

tates and Canada)-6210-3023 (International)

overnment Orders)-8641 (For Parts and Equipment Purchase Orders)

ent Parts/ipment/Manuals/ervice Items:

Federal Government Orders: International Orders:

c.ucts and Solutions

on*rder Processing

gonquin Roadrg, IL 60196

Motorola Inc.U.S. Federal Government Markets DivisionAttention: Order Processing7230 Parkway DriveLandover, MD 21076U.S.A.

Motorola Inc.Radio Products and Solutions Organization*Attention: Order Processing1307 E. Algonquin RoadSchaumburg, IL 60196U.S.A.

Radio Model Information 1-3

3.6 Parts IdentificationRadio Products and Solutions Organization*(United States and Canada)1-800-422-4210* The Radio Products and Solutions Organization (RPSO) was formerly known as the Radio Products Services Division (RPSD) and/or the Accessories and Aftermarket Division (AAD).

4.0 Radio Model InformationThe model number and serial number are located on a label attached to the back of your radio. You can determine the RF output power, frequency band, protocols, and physical packages. The example below shows one mobile radio model number and its specific characteristics.

TyU

AA

AA

= C

ount

ry C

odeTable 1-1 Radio Model Number (Example: AAM50RNC9AA1)

pe of nit

Model Series

Freq. Band

Power Level

Physical Packages

Channel Spacing Protocol

Feature Level

M 50 RUHF2

(438-470 MHz)

N1-25 W

CCM200

9Programmable

AAConventional

MDC

14/32 mini-U

364 mini-U

SUHF3

(465-495 MHz)

P25-40 W

FCM300PM400

Q25-45 W

M =

Mob

ile

1-4 INTRODUCTION

Notes

Chapter 2

MAINTENANCE

1.0 IntroductionThis chapter of the manual describes:

preventive maintenance safe handling of CMOS devices repair procedures and techniques

2.0 Preventive MaintenanceThe rainspec

2.1 InspectCheckare fun

2.2 CleaninThe foused wfront cperiod

The ondishwacircuit

1.

2.

NOTE

CAUTIONcertain pl!dios do not require a scheduled preventive maintenance program; however, periodic visual tion and cleaning is recommended.

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

gllowing procedures describe the recommended cleaning agents and the methods to be hen cleaning the external and internal surfaces of the radio. External surfaces include the

over, housing assembly, and battery case. These surfaces should be cleaned whenever a ic visual inspection reveals the presence of smudges, grease, and/or grime.

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

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.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.

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

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

2-2 MAINTENANCE

3.0 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 humidCAUT

4.0 GenerParts Re

When compoorder tParts

Rigid Cir

The fanot accompoTherefWhen

av be clo

NOTE Always use a fresh supply of alcohol and a clean container to prevent contamination bydissolved material (from previous usage).ity conditions. DO NOT attempt to disassemble the radio without first referring to the CMOS ION paragraph in the Disassembly and Reassembly section of the manual.

al Repair Procedures and Techniquesplacement and Substitution

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

cuit Boards

mily of radios uses bonded, multi-layer, printed circuit boards. Since the inner layers are cessible, some special considerations are required when soldering and unsoldering nents. The through-plated holes may interconnect multiple layers of the printed circuit. ore, care should be exercised to avoid pulling the plated circuit out of the hole.soldering near the 18-pin and 40-pin connectors: oid accidentally getting solder in the connector. careful not to form solder bridges between the connector pins sely examine your work for shorts due to solder bridges.

General Repair Procedures and Techniques 2-3

Chip Components

Use either the RLN4062 Hot-Air Repair Station or the Motorola 0180381B45 Repair Station for chip component replacement. When using the 0180381B45 Repair Station, select the TJ-65 mini-thermojet hand piece. On either unit, adjust the temperature control to 370 C (700 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.

To

1.

2.

3.4.

To

1.2.3.4.

5. replace a chip component using a soldering iron:

Select the appropriate micro-tipped soldering iron and apply fresh solder to one of the solder pads. Using a pair of tweezers, position the new chip component in place while heating the fresh solder. Once solder wicks onto the new component, remove the heat from the solder. 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.

replace a chip component using hot air:

Use the hot-air hand piece and reflow the solder on the solder pads to smooth it. Apply a drop of solder paste flux to each pad. Using a pair of tweezers, position the new component in place. Position the hot-air hand piece approximately 0.3 cm (1/8 ) above the component and begin applying heat. Once the solder wicks to the component, remove the heat and inspect the repair. All joints should be smooth and shiny.

2-4 MAINTENANCE

Shields

Removing and replacing shields will be done with the R1070 station with the temperature control set to approximately 215C (415F) [230C (445F) maximum].

To remove the shield:

1. Place the circuit board in the R1070 circuit board holder. 2. Select the proper heat focus head and attach it to the heater chimney. 3. Add solder paste flux around the base of the shield. 4. Position the shield under the heat-focus head. 5. Lower the vacuum tip and attach it to the shield by turning on the vacuum pump. 6. Lower the focus head until it is approximately 0.3 cm (1/8) above the shield. 7. Turn on the heater and wait until the shield lifts off the circuit board. 8.

9. To

1.2.

3.4.5.

6.7.

8.Once the shield is off, turn off the heat, grab the part with a pair of tweezers, and turn off the vacuum pump. Remove the circuit board from the R1070 circuit board holder.

replace the shield:

Add solder to the shield if necessary, using a micro-tipped soldering iron. 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. Place the circuit board back in the R1070 circuit board holder. Place the shield on the circuit board using a pair of tweezers. Position the heat-focus head over the shield and lower it to approximately 0.3 cm (1/8) above the shield. Turn on the heater and wait for the solder to reflow.Once complete, turn off the heat, raise the heat-focus head and wait approximately one minute for the part to cool. Remove the circuit board and inspect the repair. No cleaning should be necessary.

Notes For All Schematics and Circuit Boards 2-5

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

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

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

3. Interconnect Tie Point Legend:

Signal Name Signal Description16_8MHz 16.8MHz Reference Frequency from Synthesizer to ASFIC3V5V5V_CH9V 9RASFIC_CSB+BATT_SENSEBOOT_EN_IN_CBW_SELCH_ACTCOMM_DATA_SED3_V3DEMODDETECTOR_AUDDISPLAY_CS_CHEMERGENCY_AEMERGENCY_SEXTERNAL_MICF1200FILT_SW_B+FLAT_TX_AUDIOHANDSE RX_AUHOOK_CHHSIOIGNITIONKEYPAD_COL_CLOC_DISTLSIOMIC_AUDIO_CH3V RF regulator5V RF regulatorOptional 5V for Control HeadRegulated 9.3V Supply Voltage9V to enable RX_INJ when RX_EN is activeASFIC Chip Select13.8V Supply VoltageBattery Voltage Sense Line

H Boot Mode SelectSelect BW (12.5 KHz, 25 KHz)Channel Activity Indicator Signal (Fast Squelch)

L_CH Display Driver Command/ Data SelectRegulated 3.3V supply voltage for Voice StorageAudio Output Signal from the Receiver IC

IO_SEND_BRD Flat Audio to Option BoardControl Head Chip Select

CCES_CONN Emergency line to switch on the radio voltage regulatorsENSE Emergency sense to P_AUDIO ACCES_CONN External (from accessory connector) microphone input

Interrupt line from ASFIC CMPSwitched 13.8 V supply voltage

_INPUT_ACCESS_CONN Flat TX input from accessory connectorDIO_CH Handset Audio Output

Hang-up switch inputHigh Speed Clock In / Data OutIgnition Line to switch on the radios voltage regulator

H Keypad Matrix ColumnEnable Attenuator for RX lineLow Speed Clock In / Data OutMicrophone Input

2-6 MAINTENANCE

MIC_PTT_CH Microphone PTT InputMOD_IN Modulation Signal from ASFICMOD_OUT Modulation Signal to the SynthesizerONOFF_SENSE On off sense switchOPT_DATA_R_OPRD DATA/Ready Request from Option BoardOPT_EN_OPBD Option Board Chip SelectPA_BIAS PA Control bias voltagePA_CURRENT Not usedPOST_LIMITER_TX AUDIO_RETURN_OPT_BRD

Flat TX Input from Option Board

PROG x IN ACC y General Purpose Input x accessory connector Pin yPROG x INOUT APROG x OUT ACPWR_SETRESETRSSIRXRX AUD RTNRX_AUDIO_OUTRX_ENRX_INJSCI_CHSHIFT_R_CSSPI_CLKSPI_MISOSPI_MOSISPKR-SPKR-SPKR+SQ_DETSYNTH_CSSYNTH_LOCKTX AUDIO_RETUTX AUDIO_SENDTX_INJTX_ENUNMUTED RX_AuP_CLKVoL_INDIRECTVOXCC y General Purpose Input/Output x accessory connector Pin yC y General Purpose Input x accessory connector Pin y

PA Power Control VoltageReset LineReceived Signal Strength IndicatorRX signalOption Board Input/Output of Receiver Audio Path

PUT_ACCESS_CONN Flat or filtered audio to accessory connectorEnable ReceivingRF signal from VCO into the ReceiverBi-directional serial communication lineSPI Chip select for the Control HeadSerial peripheral interface bus CLOCKSerial peripheral interface bus data INSerial peripheral interface bus data OUTNegative Audio PA Speaker OutputNegative Audio PA Speaker OutputPositive Audio PA Speaker OutputSquelch Detect SignalSynth Chip SelectP Clock Lock Signal

RN_OPT_BRD Option Board Output to Transmit Audio Path_OPT_BRD Microphone Audio to Option Board

RF signal from the VCO to transmitter PAEnable transmitting

UDIO_SEND_OPT_BRD Unmuted filtered audio to option boardP Clock signalVolume Pot InputVoice operated transmit level

Notes For All Schematics and Circuit Boards 2-7

VS AUDIO_SEL Switch signal to Enable option board audio output signalVS GAIN_SEL Voice Storage Gain Select lineVS_MIC Voice Storage Audio Signal to microphone pathVS_INT Voice Storage Interrupt lineVS_RAC Voice storage Row Address Clock SignalVSTBY 3.3 V supply for P when the radio is switched off

2-8 MAINTENANCE

Notes

Chapter 3

SERVICE AIDS

1.0 Recommended Test ToolsTable 3-1 lists the service aids recommended for working on the radio. While all of these items are available from Motorola, most are standard workshop equipment items, and any equivalent item capable of the same performance may be substituted for the item listed.

Table 3-1 Service Aids

Motorola Part No. Description Application

RLN4460_ Portable Test Set Enables connection to audio/accessory jack.

RVN4191_

RKN4081_

FKN8096_

RKN4083_

FKN8113_

GTF374_

RLN4008_

HSN9412_

HLN8027_

8180384N64

3080369B71

3080369B72

6686119B01

6680334F39Allows switching for radio testing.

Customer Programming Software (CPS) - Software on CDROM & Global Tuner

Programs customer options and channel data.

Programming Cable with Internal RIB

Includes radio interface box (RIB) capability.

Data/Flash Adapter Key Used with RKN4081 (10 to 8 pin adapter for front Telco connector with Data/Flash switch).

Mobile Programming/Test Cable Connects radio to RIB (RLN4008_).via rear accessory connector

Adapter Cable Used with RKN4083 (20 to 16 pin adapter for rear accessory connector).

Program Cable Connects RIB to Radio microphone input.

Radio Interface Box Enables communications between radio and computers serial communications adapter.

Wall-Mount Power Suppy Used to power the RIB. (120 V ac)

Mini UHF to BNC Adaptor Adapts radio antenna port to BNC cabling of test equipment.

Housing Eliminator (25W) Test Fixture used to bench test the radio pcb.

Computer Interface Cable Connects the RIB to the Computer (25-pin).

Computer Interface Cable Connects the RIB to the Computer (9-pin)(Use for IBM PC AT - other IBM models use the B71 cable above).

Removal Tool Assists in the removal of radio control head.

Hex Tool Assists in the removal of antenna connector.

3-2 SERVICE AIDS

2.0 Test EquipmentTable 3-2 lists test equipment required to service the radio and other two-way radios.

Table 3-2 Recommended Test Equipment

Motorola Part No. Description Characteristics Application

R2000, R2600, R2400, or R2001 with trunking option for Privacy Plus and Smartnet Systems

Service Monitor This monitor will substitute for items listed below with an asterisk *

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

*R1049

*S1100

*S1053, *SKN6009, *SKN6001

R1053

R1443A

S1339

*R1013

S1348 (prog)Digital Multimeter Two meters recommended for AC/DC voltage and current measurements

Audio Oscillator 67 to 200Hz tones Used with service monitor for injection of PL tones

AC Voltmeter, Power Cable for meter, Test leads for meter

1 mV to 300 V 10 M input impedance

Audio voltage measurements

Dual-trace Oscilloscope

20 MHz bandwidth, 5 mV/cm - 20 V/cm

Waveform measurements

Broadband Wattmeter

Transmitter power output measurements

RF Millivolt Meter 100 V to 3 VRF, 10 kHz to 1.2 GHz

RF level measurements

SINAD Meter Receiver sensitivity measurements

DC Power Supply 0-20 Vdc, 0-20 Amps Bench supply for 13.8Vdc


Control HeadService Information


M

ii


iii

Table of Contents

Chapter 1 OVERVIEW

1.0 CM200 Model.......................................................................................................1-12.0 CM300/PM400 Models ........................................................................................1-1

Chapter 2 THEORY OF OPERATION

1.0 Introduction ..........................................................................................................2-12.0 Control Head Model for CM200 ...........................................................................2-1

2.1 Pow2.2 SPI2.3 Key2.4 Stat2.5 Mic2.6 Spe2.7 Elec

3.0 Control3.1 Pow3.2 SPI3.3 Key3.4 LCD3.5 Stat3.6 Mic3.7 Spe3.8 Elec

Chapter 3

1.0 Control1.1 Con1.2 Butt1.3 Butt

2.0 Control2.1 Con2.2 Butt2.3 Butt

Chapter 4

1.0 Allocati2.0 Controler Supplies...............................................................................................2-1 Interface...................................................................................................2-1pad Keys ..................................................................................................2-2us LEDs and Back Light Circuit...............................................................2-2rophone Connector Signals ......................................................................2-2aker ..........................................................................................................2-3trostatic Transient Protection...................................................................2-3 Head Model for CM300/PM400...............................................................2-4er Supplies...............................................................................................2-4

Interface...................................................................................................2-4pad Keys ..................................................................................................2-5 Driver......................................................................................................2-5us LEDs and Back Light Circuit...............................................................2-5rophone Connector Signals ......................................................................2-5aker ..........................................................................................................2-6trostatic Transient Protection...................................................................2-6

TROUBLESHOOTING CHARTS

Head CM200 Troubleshooting Chart.......................................................3-1trol Head Failure ......................................................................................3-1on/Tones Select Error (Page 1 of 2) ........................................................3-2on/Tones Select Error (Page 2 of 2) ........................................................3-3 Head CM300/PM400 Troubleshooting Chart ..........................................3-4trol Head Failure ......................................................................................3-4on/Tones Select Error (Page 1 of 2) ........................................................3-5on/Tones Select Error (Page 2 of 2) ........................................................3-6

CONTROL HEAD PCB / SCHEMATICS / PARTS LISTS

on of Schematics and Circuit Boards .......................................................4-1 Head CM200 - PCB 8488998U01 / Schematics .....................................4-3

iv

2.1 Control Head PCB 8488998U01 Parts List ....................................................4-53.0 Control Head CM300/PM400 - PCB 8489714U01 / Schematics.........................4-6

3.1 Control Head PCB 8489714U01 Parts List ....................................................4-8

Chapter 1

OVERVIEW

1.0 CM200 ModelThe control head contains the internal speaker, the on/off/volume knob, the microphone connector, several buttons to operate the radio, three indicator Light Emitting Diodes (LED) to inform the user about the radio status, and a single character 7-segment display for numeric information e.g. channel number.

2.0 CM300The contseveral babout theinformatio/PM400 Models rol head contains the internal speaker, the on/off/volume knob, the microphone connector, uttons to operate the radio, three indicator Light Emitting Diodes (LED) to inform the user radio status, and an 8 character Liquid Crystal Display (LCD) for alpha - numerical n e.g. channel number or call address name.

P2P1 P3 P4

PM400

PERS4

P2P1 P3 P4

CM300

PERS4

1-2 OVERVIEW

Notes

Chapter 2

THEORY OF OPERATION

1.0 IntroductionThis Chapter provides a detailed theory of operation for the Control head circuits. For details of the trouble shooting refer to the related chapter in this section.

2.0 Control Head Model for CM200The head contains the internal speaker, the on/off/volume knob, the microphone connector, several buttons to operate the radio and three indicator Light Emitting Diodes (LED) to inform the user about the radio

2.1 Power The poweused for 3V is use

2.2 SPI InteThe hostconnectechip sele

K

R

7-segmdisplay

K

R

7-segmdisplay

4status and a 7-segment display for numeric information.

Suppliesr supply to the head is taken from the host radios 9.3V via connector J803-9, The 9.3V is

the LEDs and back light, the 5V is used for the LCD driver and level shifter. The stabilized d for the other parts.

rface radio (master) communicates with the head through its SPI bus. Three lines are d to the shift register (U801):SPI clock (J803-17), SPI MOSI (J803-16) and shift register ct (J803-15).

ShiftRegister

BCD To 7-segment

Mux.Control

eypads

DTMFesistors

PTTcircuit

2 pin speaker connector

ent 9.3V

KeypadBacklight

9.3VRow/Column

Control lineBoot_res / SCI

DTMF Row/Column

Boot_res (DTMF-Column)/ SCI (DTMF-Row)

ShiftRegister

BCD To 7-segment

Mux.Control

eypads

DTMFesistors

PTTcircuit

2 pin speaker connector

ent 9.3V

KeypadBacklight

9.3VRow/Column

Control lineBoot_res / SCI

DTMF Row/Column

Boot_res (DTMF-Column)/ SCI (DTMF-Row)

2-2 THEORY OF OPERATION

When the host radio needs to send date to the shift register, the radio asserts the shift register chip select and the data is loaded to the shift register. For example, the host radio sends data to change display channel or change LED status.

2.3 Keypad KeysThe head keypad is a four-key design. All keys are configured as two analog lines read by P. The voltage on the analog lines varies between 0V and 3.3 V depending on which key is pressed. If no key is pressed, the voltage at both lines is 3.3V. The key configuration can be thought of as a matrix where the two lines represent one row and one column. Each line is connected to a resistive divider powered by 3.3V. If a button is pressed, it will connect one specific resistor of each divider line to ground level and thereby reduce the voltages on the analog lines. The voltages of the lines are A/D converted inside the P (ports PE 6 - 7) and specify the pressed button. To determine which key is pressed, the voltage of both lines must be considered.

The samthe same

2.4 Status All indicathe host rregister dQ7.

The back9.3 V souemitter o

2.5 MicropThe MIC_released,parts) aresense (ac

Two of theSCI lead keypad opshifting (aelectronicrow line thWhen MUpin 2) is cthat goes

The HOOto the micMIC_SENhook condthe use omux for Smicrophocost mic.e analog lines also support a keypad microphone. A microphone key press is processed in manner like a head key press.

LEDs and Back Light Circuittor LEDs (red, yellow, and green) are driven by current sources. To change the LED status adio sends a data message to the head shift register via the SPI bus. The head shift etermines the LED status from the received data and switches the LEDs on or off via Q5-

light for the keypad is always on. The back light current for the keypad is drawn from the rce and led by two current sources. The LED current is determined by the resistor at the

f the respective current source transistor.

hone Connector SignalsPTT line (J802-3) is grounded when the PTT button on the microphone is pressed. When this line is pulled to 9.3V by R805. Two transistor stages (Q802, Q801 and associated used to level shift between 9.3V and 3.3V required for the uP while keeping the same tive low for PTT pressed).

mic socket lines (J802-2,7) have dual functions depending on the type of microphone or connected. An electronic switch (U803) is used to switch these two lines between mic eration or SCI operation. The switch (mux) is led by the uP through J803-20 with level

nd inversion) provided by transistor Q812. When MUX_CTRL (J803-20) is low the switch is in the mic keypad mode. The mic socket (J802) pin 2 is connected to the keypad at goes to J803-13 and pin 7 is connected to the keypad column line that goes to J803-12. X_CTRL (J803-20) is high the electronic switch is in the SCI mode. The mic socket (J802 onnected to the SCI line that goes to J803-4 and pin 7 is connected to the BOOT_RES line to J803-11.

K line (J802-6) is used to inform the uP which type of microphone or SCI lead is connected rophone socket. The voltage of the HOOK line is monitored by the uP (port PE0, SE) through a resistor divider on the main board. When the HOOK line is grounded (on ition) or floating (2.8V nominal), the uP sets the mux (U803) for keypad operation to allow

f microphones with a keypad. When the HOOK line is connected to 9.3V, the uP sets the CI operation. This mode is also used to select low cost mic operation where the gain of the ne path is increased (on the main board) to compensate for not having a pre-amp in the low

Control Head Model for CM200 2-3

If the BOOT_RES (J802-7) line is connected to >5V (e.g. 9.3V) at turn-on, the uP will start in boot mode instead of normal operation. This mode is used to programme new firmware into the FLASH memory (U404 mainboard).

2.6 SpeakerThe head contains a speaker for the receiver audio. The receiver audio signal from the differential audio output of the audio amplifier located on the radios ler is fed via connector J803-1, 2 to the speaker connector P801 pin 1 and pin 2. The speaker is connected to the speaker connector P801. The control head speaker must be disconnected if an external speaker, connected on the accessory connector, is used.

2.7 Electrostatic Transient ProtectionElectrostadiodes VRlevels. Thtic transient protection is provided for the sensitive components in the control head by 801, VR802, VR803 and VR804. The diodes limit any transient voltages to tolerable

e associated capacitors provide Radio Frequency Interference (RFI) protection.


3.0 Control Head Model for CM300/PM400The control head contains the internal speaker, the on/off/volume knob, the microphone connector, several buttons to operate the radio, three indicator Light Emitting Diodes (LED) to inform the user about the radio status, and an 8 character Liquid Crystal Display (LCD) for alpha - numerical information e.g. channel number or call address name.

3.1 Power The powe9.3V is u(U4). The

3.2 SPI InteThe hostconnecteselect (J1

When theselect andisplay c

9.3V LCD

B

9.3V

LEDIndicators Level

ShifterLCD

Driver

LEDBacklight

9.3V LCD

B

9.3V

LEDIndicators Level

ShifterLCD

Driver

LEDBacklightSuppliesr supply to the control head is taken from the host radios 9.3V via connector J103-9, The

sed for the LEDs and back light, the 5V is used for the LCD driver (U3) and level shifter stabilized 3V is used for the other parts.

rface radio (master) communicates with the control head through its SPI bus. Three lines are d to the shift register (U8):SPI clock (J103-17), SPI MOSI (J103-16), shift register chip 03-15) and LCD driver chip select (J103-18).

host radio needs to send date to the shift register, the radio asserts the shift register chip d the data is loaded to the shift register. For example, the host radio sends data to change hannel or change LED status.

8 pin JACK connector

ShiftRegister

acklightControl

Mux.Control

Keypads

KeypadResistors

PTTcircuit

2-pin speaker connector

Row/Column

Control lineBoot_Res / SCI

DTMF Row/Column

Boot_Res (DTMF-Column)/ SCI (DTMF-Row)

8 pin JACK connector

ShiftRegister

acklightControl

Mux.Control

Keypads

KeypadResistors

PTTcircuit

2-pin speaker connector

Row/Column

Control lineBoot_Res / SCI

DTMF Row/Column

Boot_Res (DTMF-Column)/ SCI (DTMF-Row)

Control Head Model for CM300/PM400 2-5

3.3 Keypad KeysThe control head keypad is a four-key design. All keys are configured as two analog lines read by P. The voltage on the analog lines varies between 0V and 3.3 V depending on which key is pressed. If no key is pressed, the voltage at both lines is 3.3V. The key configuration can be thought of as a matrix where the two lines represent one row and one column. Each line is connected to a resistive divider powered by 3.3V. If a button is pressed, it will connect one specific resistor of each divider line to ground level and thereby reduce the voltages on the analog lines. The voltages of the lines are A/D converted inside the P (ports PE 6 - 7) and specify the pressed button. To determine which key is pressed, the voltage of both lines must be considered.

The same analog lines also support a keypad microphone. A microphone key press is processed in the same manner like a control head key press.

3.4 LCD Driver

The LCD (typically SPI bus (SU2 is use

3.5 Status All indicathe host rhead shifoff via Q8

Backlightirows. The4 levels othe shift rcurrent byrequired lto clamp tcontrolled

3.6 Microp

The MIC_released,are used (active low

Two of theor SCI leamic keypawith levelelectronicrow line thWhen MUpin 2) is cthat goes(36 x 4 segemnts) is controlled by U3. It has an on onboard clock controlled by R28 20kHz measured on pin 2). U3 is operated from the 5V supply and is controlled over the PI_CLK J103-17, SPI_MOSI J103-16, LCD chip select J103-18). Chip select is active low.

d to provide level shifting between the 3.3V logic from the uP and the 5V required by U3.

LEDs and Back Light Circuittor LEDs (red, yellow, and green) are driven by current sources. To change the LED status adio sends a data message to the control head shift register via the SPI bus. The control t register determines the LED status from the received data and switches the LEDs on or -Q10.

ng for the LCD and keys is provided by a matrix of 21 LEDs arranged in 7 columns of 3 LEDs are driven from a constant current circuit (Q12, U1 and associated parts). There are f baclight: off, low, medium and high, which are controlled by two outputs (pins 15, 1) from egister (U8). The current is controlled by transistor Q12. The op amp U1 monitors the measuring the voltage drop across R26, R27 and adjusting the bias of Q12 to achieve the evel as set by the combined shift register o/ps. When in the off state, Q11 is also turned on he base of Q12 so as to force it off. This ensures that the LEDs are fully off. Q11 is by pin 3 of the shift register U8.

hone Connector Signals

PTT line (J102-3) is grounded when the PTT button on the microphone is pressed. When this line is pulled to 9.3V by R33. Two transistor stages (Q14, Q13 and associated parts) to level shift between 9.3V and 3.3V required for the uP while keeping the same sense

for PTT pressed).

mic socket lines (J102-2, 7) have dual functions depending on which type of microphone d that is connected. An electronic switch (U41) is used to switch these two lines between d operation or SCI operation. The switch (mux) is controlled by the uP through J103-20

shifting (and inversion) provided by transistor Q41. When MUX_CTRL (103-20) is low the switch is in the mic keypad mode. The mic socket (J102) pin 2 is connected to the keypad at goes to J103-13 and pin 7 is connected to the keypad column line that goes to 103-12. X_CTRL (103-20) is high the electronic switch is in the SCI mode. The mic socket (J102 onnected to the SCI line that goes to J103-4 and pin 7 is connected to the BOOT_RES line to J103-11.


The HOOK line (J102-6) is used to inform the uP which type of microphone or SCI lead is connected to the microphone socket. The voltage of the HOOK line is monitored by the uP (port PE0, MIC_SENSE) through a resistor divider on the main board. When the HOOK line is grounded (on hook condition) or floating (2.8V nominal), the uP sets the mux (U8) for keypad operation to allow the use of microphones with a keypad. When the HOOK line is connected to 9.3V, the uP sets the mux for SCI operation. This mode is also used to select low cost mic operation where the gain of the microphone path is increased (on the main board) to compensate for not having a pre-amp in the low cost mic.

If the BOOT_RES (J102-7) line is connected to >5V (e.g. 9.3V) at turn-on then the uP will start in boot mode instead of normal operation. This mode is used to programme new firmware into the FLASH memory (U404 mainboard).

3.7 SpeakerThe contrdifferentiaJ103-1, 2connectoron the ac

3.8 ElectroElectrostadiodes VRcapacitorsol head contains a speaker for the receiver audio. The receiver audio signal from the l audio output of the audio amplifier located on the radios controller is fed via connector to the speaker connector P101 pin 1 and pin 2. The speaker is connected to the speaker P101. The control head speaker must be disconnected if an external speaker, connected cessory connector, is used.

static Transient Protectiontic transient protection is provided for the sensitive components in the control head by 1 - VR4. The diodes limit any transient voltages to tolerable levels. The associated provide Radio Frequency Interference (RFI) protection.

Chapter 3

TROUBLESHOOTING CHARTS

1.0 Control Head CM200 Troubleshooting Chart

1.1 Control Head Failure

Control Head CheckBack lightOK ?

Check 9.3V on R808, R809

No

Power-upAlert Tone

OK ?

Check SpeakerConnection

No

Power-upRed LEDFlash?

Check D801, Q806, U801

No

ChannelDisplay

OK?

CheckDS801, U801, U802

No

Up/DownP1 and P2Alert Tone

Buttons OK?Check R845, R846

R810, R811

No

EXTPTTOK ?

Check Q801, Q802No

Communication Ok Check Q803, Q812

Control Head is OK

YES

YES

YES

YES

YES

YESNo

3-2 TROUBLESHOOTING CHARTS

1.2 Button/Tones Select Error (Page 1 of 2)

Check Voltage Levels onTP401 (Keypad Col)

and TP402 (Keypad Row)(see table on next page)

Right

Button/Tones CheckNoVoltageUp Key

No

Check R846, R811on Control Head

RightVoltage

on Down Key?

Check Control Headconnectivity continuity and R429, R430, D401

(main board)

Connect DTMF Micto TELCO Connector

YES


RightVoltage

on P1/P2Keys ?

Is there0.75 Vdc onMIC_SENSE

R429, on radio


?

A

YES

No

YES

No

Control Head CM200 Troubleshooting Chart 3-3


KeyVol(TP

0.0

0.6

1.3

1.9

2.6

3.3

Key

_Ro

w V

olt

age

TP

402

NoRight

Voltageon DTMF keys

?

ReplaceQ812

A

Does Q812on Control Head

operates well?

No_Coltage 401)

Key_Column Voltage TP401

0.008 V 0.675 V 1.346 V 1.997 V 2.650 V 3.300 V

08 V Up

75 V 1 2 3

46 V 4 5 6 7

97 V 8 9 0 *

50 V # C B A

00 VDown Left KeyP1

Right KeyP2 Idle

YES

Button/Tones KeysOkay

Replace U803on Control Head

YES


2.0 Control Head CM300/PM400 Troubleshooting Chart

2.1 Control Head Failure

Back lightOK ?

Check 9.3V on Q12, U1 and associated

parts and U8

No

Control Head CheckPower-upAlert Tone

OK ?

Check SpeakerConnection

No

IndicatorLEDSOK ?

Check Q8-Q10, U8 and 9.3V

No

DisplayOK?

Check LCDconnections, U3 for 5V, Osc. pins 1 & 2 activity

SCI thru via U4

No

Up/DownP1 and P2Alert Tone

Buttons OK?

Check keypad resistorsNo

EXTPTTOK ?

Check Q13, Q802No

Communication Ok Check Q803, Q14 and associated parts

Control Head is OK

YES

YES

YES

YES

YES

YESNo

Control Head CM300/PM400 Troubleshooting Chart 3-5


Check Voltage Levels onTP401 (Keypad Col)

and TP402 (Keypad Row)(see table on next page)

Right

Button/Tones CheckNoVoltageUp Key?

No


RightVoltage

on Down Key?

Check Control Headconnectivity continuity and R429, R430, D401

(Main Board)

Connect DTMF Micto TELCO Connector

YES

Check R12, R49 on Control Head

RightVoltage

on P1-P4Keys ?

Is there0.75 Vdc onMIC_SENSE

R429, on radio

Check R31, R29R51, R11

on Control Head

A

YES

No

YES

No



KeyVol(TP

0.0

0.6

1.3

1.9

2.6

3.3

Key

_Ro

w V

olt

age

TP

402

NoRight

Voltageon DTMF keys

?

ReplaceQ41

A

Does Q41on Control Head

operates well?

No_Coltage 401)

Key_Column Voltage TP401

0.008 V 0.675 V 1.346 V 1.997 V 2.650 V 3.300 V

08 V Up

75 V 1 2 3

46 V 4 5 6 7

97 V 8 9 0 *

50 V # C B A

00 VDown Left KeyP1

Right KeyP2 P3 P4 Idle

YES

Button/Tones KeysOkay

Replace U8on Control Head

YES

Chapter 4

CONTROLHEAD PCB / SCHEMATICS / PARTS LISTS

1.0 Allocation of Schematics and Circuit BoardsTable 4-1 Control Head Diagrams and Parts Lists

PCB :Control Head CM200

8488998U01 Main Board Top Side8488998U01 Main Board Bottom Side

Page 4-3Page 4-3

SCHEMATICSSheet 1 of 1 Page 4-4

Pa

PCC

SC

Parts List8488998U01 Page 4-5

Table 4-2 Control Head Diagrams and Parts ListsB :

ontrol Head CM300/PM4008489714U01 Main Board Top Side8489714U01 Main Board Bottom Side

Page 4-6Page 4-6

HEMATICSSheet 1 of 1 Page 4-7

rts List8489714U01 Page 4-8

4-2 CONTROLHEAD PCB / SCHEMATICS / PARTS LISTS

Notes

Control Head CM200 - PCB 8488998U01 / Schematics 4-3

2

C

8

1

7

C

8

1

8

C

8

1

9

C

8

2

0

C

8

2

1

C

8

2

2

R

8

3

3

VR80203 VR804

Control Head CM200 PCB 8488998U01

Top Side

Bottom Side.0 Control Head CM200 - PCB 8488998U01 / Schematics

SHOWN FROM SIDE 1

D801

S801

D

8

0

5

J802

D

8

0

4

SH1

DS801

S802

J805

J804

D806

D802 D803

1

1

1 1 11

1

1

M

8

0

1

8488998u01_p3

SHOWN FROM SIDE 2

C

8

0

1

C

8

0

2

C

8

0

3

C

8

0

4

C

8

0

5

C

8

0

6

C

8

0

7

C

8

0

8

C

8

0

9

C

8

1

0

C

8

1

1

C

8

1

2

C

8

1

3

C

8

1

4

C

8

1

5

C

8

1

6

C

8

2

3

C824C825

C826C827

C832

C

8

3

3

C834

C

8

3

6

M

8

0

2

M

8

0

3

M

8

0

4

P801

Q802

Q803

Q804 Q805 Q806Q811

Q

8

1

2

R

8

0

1

R

8

0

2

R

8

0

3

R

8

0

4

R

8

0

5

R806

R

8

0

7

R

8

0

8

R

8

0

9

R

8

1

0

R811

R

8

1

3

R

8

1

6

R

8

1

8

R

8

1

9

R

8

2

0

R821R822R823R824R825

R826R827

R829

R

8

3

0

R

8

3

1

R

8

3

2

R834

R839

R

8

4

0

R

8

4

1

R842

R843

R

8

4

4

R

8

4

5

R

8

4

6

R847

R

8

4

8

R

8

4

9

R850

U801VR8

Q801

R842

J803

4-4 Control Head CM200 - PCB 8488998U01 / Schematics

DNP

MIC. PTTMIC. AUDIO

SPI_MOSI

HOOK

RX. AUDIOSPKR-SPKR+

SPKR-

SPKR+

KEY_ROWKEY_COL

COM/DATA_SEL

SPI_CLKSH_R_CS

DISP_CS

DIS_RES

BOOT_RES

BOOT_RES

DNP

DNPDNP DNP

THESE ARE THE

ESD PROTECTION

MAIN BOARD CONNECTOR

MICROPHONE CONNECTOR

SPEAKER CONNECTOR

HOOK

9.3 V

MIC. AUDIO

MIC. PTT

SCI

RX. AUDIO

CONTACTS (SPRINGS)

SCI

J803-22

VR803

G2

J803-21G1

J803-101810

J803-18

19J803-19

6J803-6

J803-4

1

4

J803-1

J803-1313

17J803-17

7

9J803-9

J803-7

12J803-12

20J803-20

J803-88

J803-55

3J803-3

J803-1111

J803-15

CH_PTT

TELCO_PTT

1516

2

J803-16

J803-2

1M804

1M803

1M801

C817

1M802

20.VR804 220.p

220.p 220.p

C818C816

220.pC819 C821

220.p

C820

220.p

220.p

C822

C803

220.p

C801

220.p

C805

220.p 220.p 220.p

C809C807 C811

220.p

C813

220.p

220.p

C814

220.p

C812

220.p

C810C806

220.p

C808

220.p 220.p220.p

9_3VD3_3V

C804C802

9_3V D3_3V

1n

C82310.K

Q802 47.K

R807

R806

10.K

R805

47.K47.K R804

Q801

R803

1J802-1

5J802-5

2J802-2

4J802-4

3J802-3

7J802-7

6J802-6

8J802-8

1P801-1

2P801-2

20.0

VR802

VR801

20.0

20.0

14J803-14

10K

47K

10K

47K

73B02964C39-O

ContrChange to 1% Change to 1%

COL

ROW

COL

DNP

DNPDNPDNP

DNP

UPDOWN

DNPDNP

DNP

ROW

Change to 1%Change to 1%

Change to 1%

Place under the 7-segment

DNP

F1F2

R

E

D

L

E

D

G

R

E

E

N

L

E

D

Y

E

L

L

O

W

L

E

D

KEYPAD BACKLIGHT

220.p

R84551.K

R846

BIDISPL_CS

CH_PTT

OE

TELCO_PTT

COMM_CATH_2

ANODE_B

ANODE_A

HDSP-513G

S802

4

S801

6C6

5C5

C4

R809

3.3K

D3_3V

SH1

4321

SHIELD

0.

PIN22

R850

CONTACT

13K

PIN22

PIN11

J804CONTACT

R848

PIN11

J805

10.KR849

R84410.K

R847

D3_3V D3_3V

51.K

10.K

C8369_3V

R843

10.K

Q812

9_3V

Q811

10.K

22.K

R840

R842

22.KR839

9_3V9_3V

R83220.K20.K

R831

R841

C833100n

10.K

0.

0.

R834

100n

R83313

X1

MC14053B

3

C832

C9

B10

11

Z1

Z05

Z4

Y11

Y02

Y15

X012

X14

V

E

E

7

V

C

C

1

6

G

N

D

8

EN6

A

U803

C834

22.n

V

D

D

1

6

LT3

LE5

G

C211

C12

BI4

B2

U802

V

S

S

8

14F

15E

9D2

10

D16

C824

12

B11

A213

A17MC14511BFEL

220.p

C826

220.p

9_3V9_3V

9_3V

9_3V

9_3V

D3_3V

D3_3V

33.

33.R827

33.R825

R826

R824

R823

R822

33.

33.

33.

33.R821

680.

R802

R820

680.

3C3

2C2

1C1

TOUCH_SW_MARLIN

3C3

2C2

1C1

TOUCH_SW_MARLIN

6C6

5C5

4C4

10u

0.

C815

R830

R810

470.

H

S

M

G

-

C

6

7

0 D806

R808

300.

0.

R801

H

S

M

G

-

C

6

7

0 D804

DS801

COMM_CATH_1

ANODE_G

ANODE_F

ANODE_E

ANODE_DP

ANODE_D

ANODE_C

OE

DISPL_CS

BI

R811

0.

22KR813 R816

D801

13K

D802

H

S

M

H

-

C

6

7

0

D803

H

S

M

Y

-

C

6

7

0

Q804

H

S

M

G

-

C

6

7

0

Q805

Q806

R818 R819

3.9K

C825

680.

CLK_L12

U801

100n

Q44

Q33

Q22

Q11

Q015

G

N

D

8

EN_OE13

CLK_S11V

C

C

1

6

SEROUT9

SERIN14

RESET10

Q77

Q66

Q55

MC74HC595A

C827

100n 10.K

R829

Q803

H

S

M

G

-

C

6

7

0 D805

10K

47K

47K

10K

47K

10K

47K

10K

47K

10K

ol Head CM200 Schematic

Control Head CM200 - PCB 8488998U01 / Schematics 4-5

2

CHIP RES 470 OHMS 5%CHIP RES 10K OHMS 5%CHIP RES 10K OHMS 5%CHIP RES 10K OHMS 5%CHIP RES 10K OHMS 5%CHIP RES 51K OHMS 5%CHIP RES 51K OHMS 5%CHIP RES 13K OHMS 5%

Description

.1 Control Head PCB 8488998U01 Parts

List

CircuitRef

MotorolaPart No Description

C802 2113740F59 CAP CHIP REEL CL13C804 2113740F59 CAP CHIP REEL CL13C805 2113740F59 CAP CHIP REEL CL13C806 2113740F59 CAP CHIP REEL CL13C808 2113740F59 CAP CHIP REEL CL13C809 2113740F59 CAP CHIP REEL CL13C810 2113740F59 CAP CHIP REEL CL13C811 2113740F59 CAP CHIP REEL CL13C812 2113740F59 CAP CHIP REEL CL13C813 2113740F59 CAP CHIP REEL CL13C814 2113740F59 CAP CHIP REEL CL13C816 2113740F59 CAP CHIP REEL CL13C817 2113740F59 CAP CHIP REEL CL13C818 2113740F59 CAP CHIP REEL CL13C819 2113740F59 CAP CHIP REEL CL13C820 2113740F59 CAP CHIP REEL CL13C822 2113740F59 CAP CHIP REEL CL13C823 2113743K15 CER CHIP CAP .100uFC824 2113740F59 CAP CHIP REEL CL13C825 2113743K15 CER CHIP CAP .100uFC826 2113740F59 CAP CHIP REEL CL13C827 2113743K15 CER CHIP CAP .100uFC832 2113743K15 CER CHIP CAP .100uFC833 2113743K15 CER CHIP CAP .100uFC834 2113743E07 CER CHIP CAP .022uFC836 2113740F59 CAP CHIP REEL CL13D801 4805729G74 LED SMT RED HPD802 4805729G73 LED SMT YEL HPD803 4805729G75 LED SMT GREEN HPD804 4805729G75 LED SMT GREEN HPD805 4805729G75 LED SMT GREEN HPD806 4805729G75 LED SMT GREEN HPDS801 5180353L02 7-SEGMENT DISPLAYJ802 0908353Y02 MODULAR 8-PIN STRJ803 0989241U02 FLEX 20-PIN 1mmTOP NON

M801 7588823L03 PAD GROUNFD LCDM802 7588823L03 PAD GROUNFD LCDM803 7588823L03 PAD GROUNFD LCDM804 7588823L03 PAD GROUNFD LCDP801 2809926G01 CONN 1.25MM 2PIN SURMTQ801 4809940E02 TSTR NPN DIG DTC114YEQ802 4813824A10 TSTR NPN 40V .2A GEN PQ803 4809940E02 TSTR NPN DIG DTC114YEQ804 4809940E02 TSTR NPN DIG DTC114YEQ805 4809940E02 TSTR NPN DIG DTC114YEQ806 4809940E02 TSTR NPN DIG DTC114YEQ811 4809940E02 TSTR NPN DIG DTC114YEQ812 4809940E02 TSTR NPN DIG DTC114YER801 0662057A01 CHIP RES 10 OHMS 5%R802 0662057A61 CHIP RES 330 OHMS 5%R803 0662057A89 CHIP RES 47K OHMS 5%R804 0662057A89 CHIP RES 47K OHMS 5%R805 0662057A73 CHIP RES 10K OHMS 5%R806 0662057A89 CHIP RES 47K OHMS 5%R807 0662057A73 CHIP RES 10K OHMS 5%R808 0662057A36 CHIP RES 300 OHMS 5%R809 0662057A45 CHIP RES 680 OHMS 5%R810 0662057B47 CHIP RES 0 OHMS +0.5R811 0662057B47 CHIP RES 0 OHMS +0.5R813 0662057D08 CHIP RES 22K OHMS 5%R816 0662057D03 CHIP RES 13K OHMS 5%R818 0662057A63 CHIP RES 3900 OHMS 5%R819 0662057A45 CHIP RES 680 OHMS 5%R820 0662057A45 CHIP RES 680 OHMS 5%R821 0662057A13 CHIP RES 33 OHMS 5%R822 0662057A13 CHIP RES 33 OHMS 5%R823 0662057A13 CHIP RES 33 OHMS 5%R824 0662057A13 CHIP RES 33 OHMS 5%R825 0662057A13 CHIP RES 33 OHMS 5%R826 0662057A13 CHIP RES 33 OHMS 5%R827 0662057A13 CHIP RES 33 OHMS 5%R829 0662057A73 CHIP RES 10K OHMS 5%

CircuitRef


R830 0662057A41R841 0662057A73R842 0662057A73R843 0662057A73R844 0662057A73R845 0662057A90R846 0662057A90R849 0662057D03

CircuitRef

MotorolaPart No

4-6 Control Head CM300/PM400 - PCB 8489714U01 / Schematics

3.0

C

5

6

M

2

Q41 R4

1

16

18

9U41

C

2

C

3

C

5

C

2

9

C

3

4

C

4

2

R

4

2

R

4

3

C6

VR1VR2 VR3 VR414

7

M

1

R

3

4

R

3

6

D

2

0

1

S2

D

1

3

D

2

2

D

2

5

Contr

Top Side

Bottom SideControl Head CM300/PM400 - PCB 8489714U01 / Schematics

C40

4

3

2

1

Q

1

2

R

1

9

R

2

6

R

2

7

R

2

0

R

2

4

1

45

8

U

1

C

1

1

C

2

6

Q

1

1

C

1

7

R

1

8

C35 C36

2P101

C

1

9

C23 145

8

U

1

8

C

2

1

C

2

2

R

1

1

M

4

12

2437

48

U3

M

3

R28R39

R

6

R

7

R

8

R

9

C18

C30

C32

C33

R30

C

1

6

C

2

0

C

2

5

R

1

0

R

1

5

C

3

9

R

2

9

R

5

1

7

8

1

4

U

2

1

J103

C

4

C

8

C

2

7

C

3

8

C

4

4

C

4

5

C

4

6

C

4

7

C

4

8

C

4

9

C

5

0

C

5

1

C

5

2

C

5

3

C

5

4

C

5

5

C

2

4

R

1

3

R

2

5

R

4

4

R

4

5

R

4

6

R21

R22

R23Q

8

Q

9

Q

1

0

1

6

1

8 9

U

8

C

7

C

1

5

R

1

4

R

4

0

C1

C

1

4

C

5

8

R16

R17

R31

R54

R3

C43

Q13

QR33

R3

R38

C

4

1

R

1

2

R

3

5

R

4

8

R

4

9

R

5

0

875 6321 4

9

J102

1S6

D2

1S5

D

4

1

S3

D

2

6

1

S4

D

9

1

S1

D10

D18

D19

D

3

D

1

4

D

1

7

D

2

4

D

2

7

D

5

D

8

D

1

1

D

1

5

D

1

6

D

2

1

DS1

D

1

2

D

2

3

ol Head CM300/PM400 PCB 8489714U01

Control Head CM300/PM400 - PCB 8489714U01 / Schematics 4-7

9.3 V

MIC. AUDIO

MIC. PTT

KEY_ROWKEY_COL

SPI_CLK

SPEAKER CONNECTOR

HOOK

MICROPHONE CONNECTOR

MAIN BOARD CONNECTOR

ESD CONTACTS

DIS_RES

DISP_CSCOM/DATA_SEL

SH_R_CS

BOOT_RES

BOOT_RES

SCIMIC. PTT

SPKR+

SPKR-

SPI_MOSI

HOOK

RX. AUDIO

SCI

SPKR+SPKR-

MIC. AUDIO

RX. AUDIO

Y1C

ZA 14

ZB 15

ZC 4

V

D

D

1

6

V

E

E

7

V

S

S

8

YOA12

Y0B2

Y0C5

13 Y1A

Y1B1

3

U41HEF4053B

EN 6

11SA

SB 10

9SC

19

J102-88

J103-19

10

J102-77

J103-10

470pFC54

P101-22

C29

DNF1000pF

J103-1313

220pFC53

DNF

C35

M3

6

DNF1000pF

9_3V

J102-6

12 J103-12

J103-1111

F0pF

7

4 J102-4

20VVR3

VR220V

VR1

10uFC1

DNF

20V

Q55

Q66

Q77

RESET 10

SERIN 14SEROUT9

V

C

C

1

6

CLK_S 11

EN_OE 13

G

N

D

8

Q015

Q11

Q223 Q3Q44

U8MC74HC595A

CLK_L 12

J102-55

3

J103-21G1

J102-3

220pFDNF

C55

J103-1818

DNF

C47220pF

3

J103-88

J103-3

M2 M4

220pFC46

220pFDNF

DNF

C45R350R43

3.3K

R41

DNF

10K

J103-1515

9_3V

9_3V

D3_3V

0.1uF

57

8

4

DNF

C14

U1-2LM2904 6

5V_CH

M1

J103-44

1

J103-66

J103-1

C5470pF

R420

C48

DNF

DNF

C50

220pF

J103-55

470pF

0.1uF

C56

C3470pF470pF

C2

C18PWR_GNDU2-7

GND

7

VCC

1

4

0.1uF

J103-99

C361000pFDNF

220pFC44

DNF

DNF

J103-1717

J103-77

1000pFC42

1000pFDNF

C38

5V_IN

J102-11

J103-2020

VR420V

470pFC49

DNF

C51220pF

1000pFC34

DNF

R1410K0.1uF

C15

D3_3V

C71000pF

16

J102-22

J103-16

1

J103-22G2

P101-1

J103-22

J103-1414

1000pFC6

DNF

9_3V

C58.022uF

10

470pFC52

R3

SI

TELCO_PTT

CS

CK

MUX_CTL

CH_PTT

Control Head CM300/PM400 Schematic10K

47K

10K

47K

10K

47K

10K

47K

10K

47K

10K

47K

F1

+

F2

-

UP

DOWN

F4 F3

0.1uFC22

C231000pF

R1351K

D

1

2

H

S

M

G

-

C

6

7

0

D3_3V

H

S

M

G

-

C

6

7

0

D

1

0

C430.1uF

R36

47K

H

S

M

G

-

C

6

7

0

9_3V

R28

D

2

5

680K

51KR12

R2710

R710K

H

S

M

G

-

C

6

7

0

D

1

7

DNF

C55 C6 6

10KR34

S2

C11 C2 2

C33 C4 4

D

2

3

H

S

M

G

-

C

6

7

0

TOUCH_SWDNF

D

1

4

H

S

M

G

-

C

6

7

0

0

R9

M

C

7

4

H

C

T

0

4

A

U

2

-

6

1

3

1

2

1 2

DNF

C41000pF

4C45 C5 6C6

DNFTOUCH_SW

S6

TOUCH_SWS3

1 C1 2C23 C3

10KR8

DNF

U

2

-

5

M

C

7

4

H

C

T

0

4

A

1

1

1

0

DNF

H

S

M

G

-

C

6

7

0

D

8

8

DNF0

R10

U

2

-

4

M

C

7

4

H

C

T

0

4

A

9

680

DNF

R2010K

6C6

9_3V

R23

1 C1 C2 23 C3 4C45 C5

D

2

H

S

M

G

-

C

6

7

0

TOUCH_SWDNF

S1

1KR18

10KR15

100pFDNF

DNF C33

D3_3V

C30

DNF100pF

D

1

9

H

S

M

H

-

C

6

7

0

5V_IN

DNF

C202.2uF Q41

2.2uF

M

C

7

4

H

C

T

0

4

A

U

2

-

2

3

4

C19

9_3V

H

S

M

G

-

C

6

7

0

D

9

DN100C2

D

1

8

H

S

M

Y

-

C

6

7

0

DNF1000pFC41

47KR38

2

31

8

4

9_3V

4

V35

VDD7

V

R

E

G

1

6

VSS 6

U1-1LM2904

S

E

G

4

2

1

S

E

G

5

2

2

S

E

G

6

2

3

S

E

G

7

2

4

S

E

G

8

2

5

2

6

S

E

G

9

9

S

I

V13

V2

4

2

4

3

S

E

G

2

6

S

E

G

2

7

4

4

S

E

G

2

8

4

5

S

E

G

2

9

4

6

S

E

G

3

2

0

S

E

G

3

0

4

7

4

8

S

E

G

3

1

3

5

S

E

G

1

9

3

6

S

E

G

2

1

9

S

E

G

2

0

3

7

S

E

G

2

1

3

8

S

E

G

2

2

3

9

S

E

G

2

3

4

0

S

E

G

2

4

4

1

S

E

G

2

5

S

E

G

1

0

2

8

S

E

G

1

1

S

E

G

1

2

2

9

S

E

G

1

3

3

0

S

E

G

1

4

3

1

S

E

G

1

5

3

2

S

E

G

1

6

3

3

S

E

G

1

7

3

4

S

E

G

1

8

COM2 14

COM3 15

C

S

1

0

C

_

D

1

1

O

S

C

1

1

O

S

C

2

2

S

E

G

0

1

7

S

E

G

1

1

8

2

7

S1D15100U3

C

K

8

COM0 12

COM1 13

DNF22KR46

R44

R450

DNF20K

R54

13K

10KR39

DNF10KR6

R29

22K

47KR37

R3010KDNF

130K

D

4

H

S

M

G

-

C

6

7

0

R11

9_3V

D

1

6

H

S

M

G

-

C

6

7

0

D

2

4

H

S

M

G

-

C

6

7

0

DNF

S5TOUCH_SW

2 1

D3_3V

1000pFC24

Q8

C32 D3_3V

5V_CH

DNF100pF

9_3V 9_3V

9_3V

C17

DNF1000pF

Q9

R5022K

0R49

DNF

R4820KDNF

9_3V

R3310K

M

C

7

4

H

C

T

0

4

A

U

2

-

3

5

6

H

S

M

G

-

C

6

7

0

D

1

5

Q10

10K

R19

5V_CH

9_3V

43KR51

H

S

M

G

-

C

6

7

0

D

2

1

R4010K

C33 C4 4

C55 C6 6

9_3V

DNF

S4TOUCH_SW

C11 C2 2

C160.1uF

3.9K

R24

R21

C25

2.2K

DNF1000pF

Q12

Q13

Q14

R16

27K

H

S

M

G

-

C

6

7

0

D

5

H

S

M

G

-

C

6

7

0

D

1

3

0

R25

9_3V

9_3V

R31

13K

DNF4.7uFC21

D

2

0

H

S

M

G

-

C

6

7

0

R17

13K

D

2

7

H

S

M

G

-

C

6

7

0

H

S

M

G

-

C

6

7

0

D

2

6

S

E

G

8

1

3

S

E

G

9

1

4

680R22

S

E

G

2

9

3

4

S

E

G

3

8

S

E

G

3

0

3

5

S

E

G

3

1

3

6

S

E

G

4

9

S

E

G

5

1

0

S

E

G

6

1

1

S

E

G

7

1

2

S

E

G

2

1

2

6

S

E

G

2

2

2

7

S

E

G

2

3

2

8

S

E

G

2

4

2

9

S

E

G

2

5

3

0

3

1

S

E

G

2

6

S

E

G

2

7

3

2

S

E

G

2

8

3

3

S

E

G

1

4

1

9

S

E

G

1

5

2

0

S

E

G

1

6

2

1

S

E

G

1

7

2

2

S

E

G

1

8

2

3

S

E

G

1

9

2

4

S

E

G

2

7

S

E

G

2

0

2

5

COM2 3

COM34

S

E

G

0

5

S

E

G

1

6

S

E

G

1

0

1

5

S

E

G

1

1

1

6

S

E

G

1

2

1

7

S

E

G

1

3

1

8

DNFLCD_36PIN

DS1

COM0 1

COM1 2

1000pFC39

Q11

DNF

0.1uFC11

1

2

U

2

-

1

M

C

7

4

H

C

T

0

4

A

C40

DNF1000pF

9_3V

H

S

M

G

-

C

6

7

0

D

3

C81000pF

9_3V

H

S

M

G

-

C

6

7

0

D

2

2

SHUTDOWN3

LP2951C

5V_TAP 6

5ERRORFEEDBACK7

G

N

D

4

INPUT8 OUTPUT 1

SENSE 2

DNF

U18

H

S

M

G

-

C

6

7

0

D

1

1

C261000pF

CS

MUX_CTL

ROW

COL

10R26

CH_PTT

TELCO_PTT

CK

SI

4-8 Control Head CM300/PM400 - PCB 8489714U01 / Schematics

3.1

CircRe

C1C2C3C4C5C6C7C8C11C14C15C16C17C18C19C20C21C22C23C24C25C26C27C29C30C32C33C34C35C36C38C39C40C41C42C43C44C45

CTCTCTCTPYEYEYEYE2AYE904YE

00K0K0K

30K1K1K0K0K7K3KK0K0K.9K8080.2K

0080K2K0K

Description

R31 0662057A76 RES, 13KR33 0662057A73 RES, 10KR34 0662057A73 RES, 10KR35 0662057A61 RES, 3.3KR36 0662057A89 RES, 47KR37 0662057A89 RES, 47KR38 0662057A89 RES, 47KR39 0662057A73 RES, 10KR40 0662057A73 RES, 10KR41 0662057A73 RES, 10KR42 NOTPLACED RES, 0R43 NOTPLACED RES, 0R44 NOTPLACED RES, 20KR45 0662057B47 RES, 0R46 NOTPLACED RES, 22KR48 NOTPLACED RES, 20KR49 0662057B47 RES, 0R50 NOTPLACED RES, 22KR51 0662057A88 RES, 43KR54 0662057A76 RES, 13KS1 NOTPLACED TOUCH_SWS2 NOTPLACED TOUCH_SWS3 NOTPLACED TOUCH_SWS4 NOTPLACED TOUCH_SWS5 NOTPLACED TOUCH_SWS6 NOTPLACED TOUCH_SWU1 5113818A01 LM2904U2 5113805A05 MC74HCT04AU3 5102109U01 S1D15100U8 5113805A75 MC74HC595AU18 NOTPLACED LP2951CU41 5184704M60 HEF4053BVR1 4813830A75 MMBZ20VALVR2 4813830A75 MMBZ20VALVR3 4813830A75 MMBZ20VALVR4 4813830A75 MMBZ20VAL

Circuit Ref

MotorolaPart No DescriptionControl Head PCB 8489714U01 Parts List

uit f


NOTPLACED CAP, 10uF2113740F67 CAP, 470pF2113740F67 CAP, 470pF2113740F29 CAP, 12pF2113740F67 CAP, 470pF2113740F29 CAP, 12pF2113741F25 CAP, 1000pF2113741F25 CAP, 1000pF2113743K15 CAP, 0.1uFNOTPLACED CAP, 0.1uF2113743K15 CAP, 0.1uF2113743K15 CAP, 0.1uFNOTPLACED CAP, 1000pF2113743K15 CAP, 0.1uF2113743F18 CAP, 2.2uFNOTPLACED CAP, 2.2uFNOTPLACED CAPP, 4.7uF2113743K15 CAP, 0.1uF2113741F25 CAP, 1000pF2113741F25 CAP, 1000pFNOTPLACED CAP, 1000pF2113741F25 CAP, 1000pF2113740F29 CAP, 12pF2113740F29 CAP, 12pFNOTPLACED CAP, 100pFNOTPLACED CAP, 100pFNOTPLACED CAP, 100pF2113740F29 CAP, 12pFNOTPLACED CAP, 1000pFNOTPLACED CAP, 1000pFNOTPLACED CAP, 1000pFNOTPLACED CAP, 1000pFNOTPLACED CAP, 1000pFNOTPLACED CAP, 1000pF2113740F29 CAP, 12pF2113743K15 CAP, 0.1uFNOTPLACED CAP, 220pFNOTPLACED CAP, 220pF

C46 NOTPLACED CAP, 220pFC47 NOTPLACED CAP, 220pFC48 NOTPLACED CAP, 220pFC49 2113740F67 CAP, 470pFC50 2113740F67 CAP, 470pFC51 2113740F29 CAP, 12pFC52 2113740F67 CAP, 470pFC53 2113740F29 CAP, 12pFC54 2113740F67 CAP, 470pFC55 NOTPLACED CAP, 220pFC56 2113743K15 CAP, 0.1uFC58 2113743E07 CAP, .022uFD2 4805729G75 HSMG-C670D3 4805729G75 HSMG-C670D4 4805729G75 HSMG-C670D5 4805729G75 HSMG-C670D8 4805729G75 HSMG-C670D9 4805729G75 HSMG-C670D10 4805729G75 HSMG-C670D11 4805729G75 HSMG-C670D12 4805729G75 HSMG-C670D13 4805729G75 HSMG-C670D14 4805729G75 HSMG-C670D15 4805729G75 HSMG-C670D16 4805729G75 HSMG-C670D17 4805729G75 HSMG-C670D18 4805729G73 HSMY-C670D19 4805729G74 HSMH-C670D20 4805729G75 HSMG-C670D21 4805729G75 HSMG-C670D22 4805729G75 HSMG-C670D23 4805729G75 HSMG-C670D24 4805729G75 HSMG-C670D25 4805729G75 HSMG-C670D26 4805729G75 HSMG-C670D27 4805729G75 HSMG-C670DS1 NOTPLACED LCD_36PINJ102 0908353Y02 CONN_J J103 0989241U02 CONN_J

Circuit Ref


M1 7588823L03 CONTAM2 7588823L03 CONTAM3 7588823L03 CONTAM4 7588823L03 CONTAP101 2809926G01 CONN_Q8 4809940E02 DTC114Q9 4809940E02 DTC114Q10 4809940E02 DTC114Q11 4809940E02 DTC114Q12 4813824B01 PZT222Q13 4809940E02 DTC114Q14 4813824A10 MMBT3Q41 4809940E02 DTC114R3 0662057A01 RES, 1R6 NOTPLACED RES, 1R7 NOTPLACED RES, 1R8 NOTPLACED RES, 1R9 0662057B47 RES, 0R10 NOTPLACED RES, 0R11 0662057B01 RES, 1R12 0662057A90 RES, 5R13 0662057A90 RES, 5R14 0662057A73 RES, 1R15 NOTPLACED RES, 1R16 0662057A83 RES, 2R17 0662057A76 RES, 1R18 0662057A49 RES, 1R19 0662057A73 RES, 1R20 NOTPLACED RES, 1R21 0662057A63 RES, 3R22 0662057A45 RES, 6R23 0662057A45 RES, 6R24 0662057A57 RES, 2R25 0662057B47 RES, 0R26 0662057A01 RES, 1R27 0662057A01 RES, 1R28 0662057B18 RES, 6R29 0662057A81 RES, 2R30 NOTPLACED RES, 1

Circuit Ref

MotorolaPart No


UHF2 (438-470 MHz) 1-25 WService Information


M

ii


iii

Table of Contents

Chapter 1 MODEL CHART AND TECHNICAL SPECIFICATIONS

1.0 CM200/CM300/PM400 Model Chart....................................................................1-12.0 Technical Specifications ......................................................................................1-2

Chapter 2 THEORY OF OPERATION

1.0 Introduction ..........................................................................................................2-12.0 UHF (438-470 MHz) Receiver .............................................................................2-1

2.1 Re2.2 Re

3.0 UHF Tr3.1 Fi3.2 Po3.3 Fi3.4 Di3.5 An3.6 Ha3.7 Po

4.0 UHF (44.1 Re4.2 Fr4.3 Vo4.4 Sy

5.0 Control5.1 Ra5.2 Pr5.3 Au5.4 M5.5 Se5.6 SB5.7 G5.8 No5.9 St

6.0 Control6.1 Au

7.0 Transm7.1 M7.2 PT

8.0 Transm8.1 Su8.2 Hiceiver Front-End......................................................................................2-1ceiver Back End ......................................................................................2-2ansmitter Power Amplifier (438-470 MHz) ...............................................2-2rst Power Controller Stage........................................................................2-2wer Controlled Driver Stage ....................................................................2-3

nal Stage...................................................................................................2-3rectional Coupler ......................................................................................2-3tenna Switch............................................................................................2-3rmonic Filter ............................................................................................2-4wer Control ..............................................................................................2-438-470 MHz) Frequency Synthesis ..........................................................2-4ference Oscillator ....................................................................................2-4

actional-N Synthesizer .............................................................................2-5ltage Controlled Oscillator (VCO) ............................................................2-6nthesizer Operation .................................................................................2-7ler Theory of Operation ............................................................................2-8dio Power Distribution .............................................................................2-8

otection Devices.....................................................................................2-10tomatic On/Off .......................................................................................2-10

icroprocessor Clock Synthesiser ............................................................2-11rial Peripheral Interface (SPI) ................................................................2-12EP Serial Interface ................................................................................2-12

eneral Purpose Input/Output ...................................................................2-12rmal Microprocessor Operation.............................................................2-13

atic Random Access Memory (SRAM)...................................................2-14 Board Audio and Signalling Circuits ......................................................2-14dio Signalling Filter IC and Compander (ASFIC CMP)..........................2-14it Audio Circuits......................................................................................2-15

icrophone Input Path...............................................................................2-15T Sensing and TX Audio Processing ....................................................2-16it Signalling Circuits ...............................................................................2-17b-Audio Data (PL/DPL)..........................................................................2-17gh Speed Data .......................................................................................2-18

iv

8.3 Dual Tone Multiple Frequency (DTMF) Data.............................................2-189.0 Receive Audio Circuits.......................................................................................2-19

9.1 Squelch Detect ..........................................................................................2-199.2 Audio Processing and Digital Volume Control ...........................................2-209.3 Audio Amplification Speaker (+) Speaker

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Motorola Cm300 Manual