Motorola 6864115B62-C Detailed Service Manual

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Page 1

Professional Radio

GM Series

Detailed Service Manual

6864115B62-C

Page 2

Page 3

WLS EMEA Publications Department, Jays Close, Viables Industrial Estate, Basingstoke, Hampshire, RG22 4PD, UK. Issue : July 2007

iii

Professional Radio

GM Series

Detailed Service Manual

6864115B62-C

Contents

Section 1 Service Maintainability Section 2 Controlhead Service Information Section 3 Controller Service Information Section 4 VHF Service Information Section 5 UHF Service Information Section 6 Lowband Service Information

Page 4

Page 5

Professional Radio

GM Series

Service Maintainability

Issue: July 2007

Page 6

Computer Software Copyrights

The Motorola products described in this manual may include copyrighted Motorola comp uter 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 comput er 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 no rmal non-exclusive royalty-free license to use that arises by operation of law in the sale of a product.

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Table of Contents

Chapter 1 INTRODUCTION

1.0 Scope of Manual..................................................................................................1-1

2.0 Warranty and Service Support.............................................................................1-1

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

2.2 After Warranty Period.....................................................................................1-1

2.3 European Radio Support Centre (ERSC).......................................................1-2

2.4 Parts Identification and Ordering....................................................................1-2

2.5 EMEA Test Equipment Support......................................................................1-2

2.6 Technical Support...........................................................................................1-3

2.7 Related Documents........................................................................................1-3

3.0 Radio Model Information......................................................................................1-4

Chapter 2 MAINTENANCE

1.0 Introduction..........................................................................................................2-1

2.0 Preventive Maintenance ......................................................................................2-1

2.1 Inspection.......................................................................................................2-1

2.2 Cleaning .........................................................................................................2-1

3.0 Safe Handling of CMOS and LDMOS..................................................................2-2

4.0 General Repair Procedures and Techniques.......................................................2-2

5.0 Notes For All Schematics and Circuit Boards......................................................2-5

Chapter 3 SERVICE AIDS

1.0 Recommended Test Tools...................................................................................3-1

2.0 Test Equipment....................................................................................................3-2

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Chapter 1

INTRODUCTION

1.0 Scope of Manual

This 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 inco rporated by a complete Manual revision or alternatively as additions.

2.0 Warranty and Service Support

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

2.1 Warranty Period and Return Instructions

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

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

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

2.2 After Warranty Period

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

1. Motorola's Radio Aftermarket and Accessory Division (AAD) offers a repair service to both end users and dealers at competitive prices.

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

NOTE

Before operating or testing these units, plea se read the Safety Information Section in the front of this manual.

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1-2 INTRODUCTION

2.3 European Radio Support Centre (ERSC)

The ERSC Customer Information Desk is available throu gh th e follo win g se rvic e nu m bers : Austria: 06 60 75 41 Italy: 16 78 77 387 Belgium: 08 00 72 471 Luxemburg: 08 00 23 27 Denmark: 80 01 55 72 Netherlands: 60 22 45 13 Finland: 08 00 11 49 10 Norway: 80 01 11 15 France: 05 90 30 90 Portugal: 05 05 49 35 70 Germany: 08 00 18 75 240 Spain: 90 09 84 902 Greece: 00 80 04 91 29 020 Sweden: 02 07 94 307 UK: 08 00 96 90 95 Switzerland: 1 55 30 82 Ireland: 18 00 55 50 21 Iceland: 80 08 147 Or dial Customer Care Centre:

Tel: +49 6128 70 2618

Please use these numbers for repair enquiries only.

2.4 Parts Identification and Ordering

Request for help in identification of non-referenced spare parts should be directed to the Customer Care Organisation of Motorola’s local area representation. Orders for replacement parts, kits and assemblies should be placed directly on Motorola’s local distribution organisation or via Motorola Online (Extranet).

2.5 EMEA Test Equipment Support

Information related to support and service of Motorola Test Equi pment is available via Motorola Online (Extranet), through the Customer Care Organisation of Motorola’s local area representation or by calling the Motorola switchboard in Germany on telephone number: +49 6128 700.

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Warranty and Service Support 1-3

2.6 Technical Support

Motorola Product Services is available to assist the dealer/distributors in resolving any malfunctions which may be encountered.

North Europe - Stephen Woodrow Central/East Europe - Siggy Punzenberger Telephone: +44 (0) 1256 488 082 Telephone: +49 (0) 6128 70 2342 Fax: +44 01256 488 080 Fax: +49 (0) 6128 95 1096 Email: CSW066@motorola.com Email: TFG003@email.mot.com

Russian and Belarus - Andrey Nagornykh Germany - Customer Connect Team Telephone: +7 495 787 8910 Telephone: +49 (0) 30 6686 1539 Fax: +7 495 785 0185 Fax: +49 (0) 30 6686 1916 Email: mwcb47@email.mot.com Email: cgiss.emea@europe.mot.com

Africa & Middle East - Wayne Holmes Italy - Ugo Gentile Telephone: +27 11 800 7922 Telephone: +39 02 5220 7825 Fax: +27 11 800 7923 Fax: +39 02 5220 7810 Email: radiosupport.za@motorola.com Email: Ugo.Gentile@motorola.com

France - Armand Roy France - Laurent Irrmann Telephone: +33 1 6935 7868 Telephone: +33 1 6935 7866 Fax: +33 1 6935 7808 Fax: +33 1 6935 78 08 Email: armand.roy@motorola.com Email: laurent.irrmann@motorola.com

2.7 Related Documents

The following documents are directly related to the use and maintainability of this product.

Title Language Part Number

GM100 Series Product Manual English ENLN4147 GM300 Series Product Manual English

German French Italian Spanish Russian

ENLN4137 ENLN4138 ENLN4139 ENLN4140 ENLN4141 ENLN4142

GM600/GM1200 Series Product Manual English

German French Russian

ENLN4143 ENLN4144 ENLN4145 ENLN4146

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1-4 INTRODUCTION

3.0 Radio Model Information

The model number and serial number are located on a label attached to the back of yo ur 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.

Table 1-1 Radio Model Number (Example: MDM25KHC9AN1AE)

Type of

Unit

Model

Series

Freq.

Band

Power

Level

Physical

Packages

Channel Spacing

Protocol

Feature

Level

Model

Revision

Model

Package

MD M 25 K

VHF

(136-

174MHz)

1-25W

GM140 GM328 GM340 GM640

Program

mable

Conventional

5 Tone

GM140 GM328 GM340 GM640

A E

UHF 1

(403-

470MHz)

25-40W 40-60W

GM380,

GM1280

Conventional

MDC

Databox

(5Tone)

UHF 2

(450-

527MHz)

GM160 GM338 GM360 GM660

MPT

GM160 GM338 GM360 GM660

LB1

29-36MHz

Databox

GM338 GM380

GM1280

LB2

36-42MHz

GM398

Databox

(MPT)

LB3

42-50MHz

MD = Motorola Internal Use

M = Mobile

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Chapter 2

MAINTENANCE

1.0 Introduction

This chapter of the manual describes:

■ preventive maintenance

■ safe handling of CMOS devices

■ repair procedures and techniques

2.0 Preventive Maintenance

The radios do not require a scheduled preventive maintenance program; however, periodic visual inspection and cleaning is recommended.

2.1 Inspection

Check that the external surfaces of the radio are clean, and that a ll external controls and switch es are functional. It is not recommended to inspect the interior electronic circuitry.

2.2 Cleaning

The 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 sur faces 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 (70% by volume).

1. Cleaning External Plastic Surfaces The detergent-water solution should be applied sparingly with a stiff, non-metallic, shortbristled 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.

2. Cleaning Internal Circuit Boards and Components Isopropyl 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

NOTE

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

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.

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2-2 MAINTENANCE

3.0 Safe Handling of CMOS and LDMOS

Complementary metal-oxide semicondu ctor (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.

4.0 General Repair Procedures and Techniques

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

NOTE

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

NOTE

Environmentally Preferred Products (EPP) (refer to the marking on the printed circuit boards — examples shown below) were developed and assembled using environmentally preferred components and solder assembly techniques to comply with the European Union’s Restriction of Hazardous Substances (ROHS) Directive 2002/95/ EC and Waste Electrical and Electronic Equipment (WEEE) Directive 2002/96/EC. To maintain product compliance and reliability, use only the Motorola specified parts in this manual..

Table 2-1 Lead Free Solder Wire Part Number List

Motorola

Part Number

Alloy 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 1088929Y02 95.5Sn/3.8Ag/0.7Cu RMA Version 2.7-3.2% 217C 52170 0.010” 0.5lb spool 1088929Y03 95.5Sn/3.8Ag/0.7Cu RMA Version 2.7-3.2% 217C 52173 0.032” 1lb spool

Table 2-2 Lead Free Solder Paste Part Number List

Motorola Part

Number

Manufacturer Part

Number

Viscosity Type Composition & Percent Metal

Liquid

Temperature

10-856-74C03 NC-SMQ230 900-1000KCPs

Brookfield (5rpm)

Type 3

(-325/+500)

95.5%Sn-3.8%Ag-0.7%Cu

89.93%

217°C

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General Repair Procedures and Techniques 2-3

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 Commun icatio ns 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 18-pin and 40-pin connectors:

■ 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 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 minithermojet hand piece. On either unit, adjust the tem p er at ur e co nt ro l to 370 °C (7 00 °F), an d adjust the airflow to a minimum setting. Airflow can vary due to component density.

■ T o 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 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.

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2-4 MAINTENANCE

Shields

Removing and replacing shields will be done with the R1070 station with the temperature control set to approximately 215°C (415°F) [230°C (445°F) 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. Once the shie ld is off, turn off the heat, grab the part with a pair of tweezers, and turn of f

the vacuum pump.

9. Remove the circuit board from the R1070 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 R1070 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 and lower it to approximately 0.3 cm (1/8”)

above 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.

Page 17

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 (µF).

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

3. Interconnect Tie Point Legend: 16_8MHz 16.8MHz Reference Frequency 3V3 Regulated 3.3V Supply Voltage for Voice Storage 5V Regulated 5V Supply Voltage for RF Circuitry 5V Regulated 5V Supply Voltage (Control Head) 5V RF Regulated 5V Supply Voltage for RF Circuitry 5V SOURCE 5V Signal to Switch On Control Head 5VD Regulated 5V Supply Voltage for Digital Circuitry 9V3 Regulated 9.3V Supply Voltage 9V3FLT Filtered 9.3V Supply Voltage A+ 13.2V Supply Voltage ADDR *P Address Lines AN Analog Lines to Analog to Digital Converter ANALOG INPUT 2 External Keypad Matrix Column Signal ANALOG INPUT 3 External Keypad Matrix Row Signal BATTERY VOLTAGE Battery Voltage Sense Line BL A GREEN Back Light Anode Green BL A RED Back Light Anode Red BL GREEN Green Back Light Control BL K GREEN Back Light Cathode Green BL K RED Back Light Cathode Red BL KP Green Green Keypad Back Light Control BL KP RED Red Keypad Back Light Control BL LCD GREEN Green Display Back Light Control BL LCD RED Red Display Back Light Control BL RED Red Back Light Control BOOT CNTRL Bootstrap Mode Enable Signal BOOT MODE Boot Mode Select BOOT PWR ON Control Head Switch On Signal BOOT SCI RX Serial Communication Interface Receive Line BOOT SCI TX Serial Communication Interface Transmit Line BOOT VPP Boot Mode Select BUS+ Bi-directional Serial Communication Line BWSELECT Signal to select between the Ceramic Filter Pairs

Page 18

2-6 MAINTENANCE

CH ACT Channel Activity Indicator Signal (Fast Squelch) CH KP ID Control Head Keypad ID (Data) Lines CH REQUEST Control Head Request from Control Head *P CLK Clock Signal CNTLVLTG PA Power Control Voltage CNTR AUDIO Audio Lines of the Controller COL x Keypad Matrix Column x CSX Chip Select Line PCIC / FRACN DATA Data Signal DC POWER ON Electronic Switching On or Off of the Radio's Voltage Regulators DISCAUDIO Audio Output Signal from the Receiver IC ECLK Clock (not used) EE CS EEPROM Chip Select EMERGENCY CONTROL Emergency Line to switch on the Radio's V oltage Regulators EXP BD REQ Service Request Line from Expansion Board EXP1 CS Expansion Board Chip Select 1 EXP2 CS Expansion Board Chip Select 2 EXT KP COL External Keypad Matrix Column Signal EXT KP ROW External Keypad Matrix Row Signal EXT MIC External (from Accessory Connector) Microphone Input EXT SWB+ External Switched 13.2V Supply Voltage F1200 Interrupt Line from ASFIC CMP FECTRL 1 Control Voltage for Front End Filter FECTRL 2 Control Voltage for Front End Attenuator Switch FLASH CS Flash Chip Select FLASH OE Flash Output Enable FLAT RX SND O ption Board Audio Output Signal FLA T TX RTN Flat TX Input from Option Board and Accessory Connector FLT A+ Filtered 13.2 V Supply Voltage GP x IN General Purpose Input x GP x IN ACC y General Purpose Input x from Accessory Connector Pin y GP x IN OUT ACC y General Purpose Input /Output x from Accessory Connector Pin

y GP x OUT General Purpose Output x GP x OUT ACC y General Purpose Input x from Accessory Connector Pin y GPIO General Purpose Input Output Lines HANDSET AUDIO Handset Audio Output HOOK Hang-up Switch Input HSIO High Speed Clock In / Data Out IF First Intermediate Frequency Signal IGNITION CONTROL Ignition Line to switch on the Radio's Voltage Regulators

Page 19

Notes For All Schematics and Circuit Boards 2-7

IN 5V RF REG Supply Voltage for 5V Regulator in RF Section INT KP COL Internal Keypad Matrix Column Signal INT KP ROW Internal Keypad Matrix Row Signal INT MIC Internal (from Control Head) Microphone Input INT SWB Internal Switched 13.2V Supply Voltage INT SWB+ Internal Switched 13.2V Supply Voltage IRQ Interrupt Request from Control Head K9V1 9.1V in Transmit Mode KEYPAD ID Keypad Identification Line LCD A0 LCD Control / Display Data Select LCD CS LCD Chip Select LCD DATA LCD Data Lines LCD E RD LCD Enable Read LCD RW WR LCD Read Write Control LED CNTRL LED Control Lines LED GREEN Green LED Control LED RED Red LED Control LED YELLOW Yellow LED Control LOCK Lock Detect Signal from Synthesizer LSIO Low Speed Clock In / Data Out LVZIF CS LVZIF Chip Select (not used) MIC Microphone Input MISO Serial Peripheral Interface Receive Line MODIN Modulation Signal into the Synthesizer MOSBIAS 2 PA Bias Voltage for second Stage MOSBIAS 3 PA Bias Voltage for third Stage NOISE BLNKR Noise Blanker Enable (Low Band only) ON OFF CONTROL Service Request Line from Control Head / Manual Switc hin g On

of the Radio's Voltage Regulators ON OFF SENSE (Control Head)On Off Sense Line to Control Head *P ON OFF SENSE (Controller) Service Request Line from Control Head OPT CS Option Board Chip Select OPT PTT PTT from Option Board PA PWR SET ASFIC Output Voltage to set the Transmitter Power PA SWB Switches Supply Voltage for PA Current Control Circuitry PASUPVLTG 13.2 V Supply Voltage of the Transmitter PA PCIC MOSBIAS 1 PA Bias Voltage for first Stage PRESC Prescaler Signal from VCO to Synthesizer PTT IRDEC Microphone PTT Input PTT IRDECODER Microphone PTT Input R W Read Write Signal for RAM / Flash

Page 20

2-8 MAINTENANCE

RAM CS RAM Ship Select RDY Service Request Line from Option Board REF CS Reference Chip Select (not used) RESET Reset Line ROW x Keypad Matrix Row x RSSI Received Signal Strength Indicator RX ADAPT Flat TX Path Disable during Transmitter Key-up RX AUD RTN Option Board In put / Output of Receiver Audio Path RX FLAT FILTERED AUDIO Flat or Filtered Audio to Accessory Connector RXIN RF Signal from Antenna Switch into the Receiver RXINJ RF Signal from the VCO into the Mixer SCI RX Serial Communication Interface Receive Line SCI TX Serial Communication Interface Transmit Line SPI Serial Peripheral Interface Bus SPKR- Negative Audio PA Speaker Output SPKR+ Positive Audio PA Speaker Output SQ DET Squelch Detect Signal SYN *P Clock Signal TEMP SENSE Temperature Sense Line for LCD TEMPSENSE T emperature Sense Line from PA to *P TRB TX/RX VCO Switch Signal TX AUD RTN Option Board Output to Transmit Audio Path TX AUD SND Microphone Audio to Option Board TXINJ RF Signal from the VCO into the Transmitter PA U DRIVER Supply V oltage for PA Driver U PREDRIVER Supply Voltage for PA Pre-driver UNSW 5V Permanent 5V Supply URX SND Filtered Audio Signal to Option Board VAG 2.5V Reference Voltage for Analog Circuitry VCOBIAS 1 Switch Signal from Synthesizer VCOBIAS 2 Switch Signal from Synthesizer VCOMOD Modulation Signal into VCO VCTRL VCO Frequency Control Voltage VDDA Regulated 5V for Digital Circuitry in RF Section VOLTAGE SENSE Voltage Sense Line from LCD VOLUME Volume Pot Output VOX Voice Operated Transmit Level VPP Boot Mode Select VS AUDIOSEL Switch Signal to Enable Option Board Audio Output Signal VS GAINSEL Voice Storage Gain Select Line VS INT Voice Storage Interrupt Line

Page 21

Notes For All Schematics and Circuit Boards 2-9

VS MIC Voice Storage Audio Signal into Microphone Path VS RAC Voice Storage Row Address Clock Signal VSF Volt age Super Filtered (5V) VSTBY 5V Supply for *P when the Radio is switched off

4-LAYER CIRCUIT BOARD DETAIL VIEWING COPPER STEPS IN PROPER LAYER SEQUENCE

LAYER 1 (L1) LAYER 2 (L2) LAYER 3 (L3) LAYER 4 (L4)

INNER LAYERS

SIDE 1

SIDE 2

Page 22

2-10 MAINTENANCE

Page 23

Chapter 3

SERVICE AIDS

1.0 Recommended Test Tools

Table 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 equipm e nt item s, an d an y eq uiv ale n t item capable of the same performance may be substituted for the item listed.

Table 3- 1 Service Aids

Motorola Part

Number

Description Application

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

Allows switching for radio testing.

RKN4081_ Programming Cable with

Internal RIB

Includes radio interface box (RIB) capability.

RLN4853_ 10 to 20 Pin Adapter Connects RKN4081_ to the radio accessory

connector.

RKN4083_ Mobile Programming/Test

Cable

Connects radio to RIB (RLN4008_).

GTF374_ Program Cable Connects RIB to Radio microphone input RLN4008_ Radio Interface Box Enables communications between radio and

computer’s serial communications adapter.

HLN8027_ Mini UHF to BNC Adaptor Adapts radio antenna port to BNC cabling of

test equipment.

GPN6133_ Power Supply Provides the radio with power when bench

testing. EPN4040_ Wall-Mounted Power Supply Used to supply power to the RIB (UK). EPN4041_ Wall-Mounted Power Supply Used to supply power to the RIB (Euro) 8180384J59 Housing Eliminator (short) Test Fixture used to bench test the radio pcb 8180384L95 Housing Eliminator

(short + top)

Test Fixture used to bench test the radio pcb.

(Radio using pressure pads to retain pcb) 8180384J60 Housing Eliminator

(medium)

Test Fixture used to bench test the radio pcb

8180384J61 Housing Eliminator (long) Test Fixture used to bench test the radio pcb 3080369B71 Computer Interface Cable Connects the RIB to the Computer (25-pin) 3080369B72 Computer Interface Cable Connects the RIB to the Computer 9-pin

(Use for IBM PC AT - other IBM models use

the B71 cable above) 6686119B01 Removal Tool Assists in the removal of radio control head.

Page 24

3-2 SERVICE AIDS

2.0 Test Equipment

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

Table 3-2 Recommended Test Equipment

Motorola Part

Number

Description Characteristics

Application

R2600_NT Comms System Analyzer

(non MPT)

This monitor will substitute for items with an asterisk*

Frequency/deviation meter and signal generator for widerange troubleshooting and alignment

R2680_NT Comms System Analyzer

( MPT1327) to be ordered with RLN1022_ (H/W) RLN1023_ (S/W)

This monitor will substitute for items with an asterisk*.

Frequency/deviation meter and signal generator for widerange troubleshooting and alignment

*R1072_ Digital Multimeter AC/DC voltage and

current measurements

*R-1377_ AC Voltmeter 100µV to 300V, 5Hz -

1MHz, 10Megohm input impedance

Audio voltage measurements

WADN133_ Delay Oscilloscope 2 Channel 40MHz

bandwidth, 5mV/cm - 20 V/cm

Waveform measurements

R1440_ 0180305F17

0180305F31 0180305F39 RLN4610_

T1013_

Wattmeter, Plug-in Elements

Plug-in Elements Plug-in Elements Carry case

RF Dummy Load

Thruline 50-Ohm, ±5% accuracy 100W, 25 - 60MHz 25W, 100-250MHz 10W, 200-250MHz Wattmeter and 6 elements

Transmitter power output measurements

S1339_ RF Millivolt Meter 100mV to 3 VRF.

10kHz to 1.2GHz

RF level measurements

R1011_/220V 220V Power Supply 0 - 40V 0 - 40A Programmable

Page 25

Professional Radio

GM Series

Controlhead

Service Information

Issue: July 2007

Page 26

Computer Software Copyrights

The Motorola products described in this manual may include copyrighted Motorola comp uter 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 comput er 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 royaltyfree license to use that arises by operation of law in the sale of a product.

Page 27

Table of Contents

Chapter 1 MODEL OVERVIEW

1.0 GM140/GM340/GM640 Models...........................................................................1-1

2.0 GM160/GM360/GM660 Models...........................................................................1-1

3.0 GM380/GM1280 Models......................................................................................1-2

Chapter 2 THEORY OF OPERATION

1.0 Introduction..........................................................................................................2-1

2.0 Controlhead Model for GM140, GM340 and GM640...........................................2-1

2.1 Power Supplies...............................................................................................2-1

2.2 Power On / Off................................................................................................2-1

2.3 Microprocessor Circuit....................................................................................2-1

2.4 SBEP Serial Interface.....................................................................................2-2

2.5 Keypad Keys ..................................................................................................2-2

2.6 Status LED and Back Light Circuit..................................................................2-3

2.7 Microphone Connector Signals ......................................................................2-3

2.8 Speaker..........................................................................................................2-4

2.9 Electrostatic Transient Protection...................................................................2-4

3.0 Controlhead Model for GM160, GM360 and GM660...........................................2-4

3.1 Power Supplies...............................................................................................2-4

3.2 Power On / Off................................................................................................2-4

3.3 Microprocessor Circuit....................................................................................2-5

3.4 SBEP Serial Interface.....................................................................................2-5

3.5 Keypad Keys ..................................................................................................2-6

3.6 Status LED and Back Light Circuit..................................................................2-6

3.7 Liquid Crystal Display (LCD) ..........................................................................2-6

3.8 Microphone Connector Signals ......................................................................2-7

3.9 Speaker..........................................................................................................2-8

3.10 Electrostatic Transient Protection...................................................................2-8

4.0 Controlhead Model for GM380 and GM1280.......................................................2-8

4.1 Power Supplies...............................................................................................2-8

4.2 V oltage Regulator Circuit................................................................................2-8

4.3 Power On / Off................................................................................................2-9

4.4 Microprocessor Circuit....................................................................................2-9

4.5 SBEP Serial Interface.....................................................................................2-9

4.6 Keypad Keys ................................................................................................2-10

4.7 Status LED and Back Light Circuit................................................................2-10

4.8 Liquid Crystal Display (LCD) ........................................................................2-11

4.9 Microphone Connector Signals ....................................................................2-11

4.10 Speaker........................................................................................................2-12

4.11 Electrostatic Transient Protection.................................................................2-12

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Chapter 3 TROUBLESHOOTING CHARTS

1.0 Troubleshooting Chart for Controlhead GM140/340/640 ....................................3-1

1.1 On/Off .................................................................................................................3-1

1.2 Microprocessor ...................................................................................................3-2

2.0 Troubleshooting Chart for Controlhead GM160/360/660 ....................................3-3

2.1 On/Off .................................................................................................................3-3

2.2 Microprocessor ...................................................................................................3-4

2.3 Display ................................................................................................................3-5

2.4 Backlight .............................................................................................................3-6

3.0 Troubleshooting Chart for Controlhead GM380/1280 .........................................3-7

3.1 On/Off .................................................................................................................3-7

3.2 Microprocessor ...................................................................................................3-8

3.3 Microprocessor ...................................................................................................3-9

3.4 Display ..............................................................................................................3-10

3.5 Keypad Backlight ..............................................................................................3-11

3.6 Display Backlight ..............................................................................................3-12

Chapter 4 CONTROLHEAD PCB/SCHEMATICS/PARTS LISTS

1.0 Allocation of Schematics and Circuit Boards.......................................................4-1

2.0 Controlhead GM140/340/640 - PCB 8486146B07/8471236Z01 / Schematics....4-3

2.1 Controlhead PCB 8486146B07 - Parts List .........................................................4-6

2.2 Controlhead PCB 8471236Z01 - Parts List .........................................................4-7

3.0 Controlhead GM160/360/660 - PCB 8486155B06/8415672H03 / Schematics ..4-8

3.1 Controlhead PCB 8486155B06 - Parts List ......................................................4-13

3.2 Controlhead PCB 8415672H03 - Parts List.......................................................4-14

4.0 Controlhead GM380/1280 - PCB 8486178B03/04 / Schematics.......................4-15

4.1 Controlhead PCB 8486178B03/04 - Parts List ..................................................4-20

4.2 Controlhead PCB 8471237L01 - Parts List........................................................4-21

Page 29

Chapter 1

OVERVIEW

1.0 GM140/GM340/GM640 Models (GCN6112_)

The Controlhead contains the internal speaker, the on/off/volume knob, the microphone connector, several buttons to operate the radio and several indicator Light Emitting Diodes (LED) to inform the user about the radio status. To control the LED’s an d to communicate with the host radio the con trol head uses the Motorola 68HC11E9 microprocessor.

2.0 GM160/GM360/GM660 Models (GCN6114-GM160 / GCN6120-GM360/660)

The Controlhead contains the internal speaker, the on/off/volume knob, the microphone connector, several buttons to operate the radio, several indicator Ligh t Emitting Diodes (LED) to inform the user about the radio status, and a 14 character Liquid Crystal Display (LCD) for alpha - numerical information e.g. channel number or call address name. To control the LED’s and th e LCD, and to communicate with the host radio the control head uses the Motorola 68HC11E9 microprocessor

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1-2 overview

3.0 GM380/GM1280 Models (GCN6121_)

The Controlhead contains the on/off/volume knob, the microphone connector, several buttons to operate the radio, several indicator Light Emitting Diodes (LED) to inform the user about the radio status, and a Liquid Crystal Display (LCD) with 21 pre - defined symbols and a 32*96 dot matrix for graphical or alpha - numerical information e.g. channel number, select code, call address name. To control the LED’s and the LCD, and to communicate with the host radio the control head uses the Motorola 68HC11K4 microprocessor.

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Chapter 2

THEORY OF OPERATION

1.0 Introduction

This Chapter provides a detailed theory of operation for the Controlhead circuits. For details of the trouble shooting refer to the related Section of this manual.

2.0 Controlhead Model for GM140, GM340 and GM640

The controlhead contains the internal speaker, the on/off/volume knob, the micr ophone connector, several buttons to operate the radio and sev eral indicator Light Emitting Diodes (LED) to inform the user about the radio status. To control the LED’s and to communicate with the host radio the controlhead uses the Motorola 68HC11E9 microprocessor.

2.1 Power Supplies

The power supply to the controlhead is taken from the host radio ’s FLT A+ voltage via connector J0801 pin 3 and the regulated +5V via connector J0801 pin 7. The vo ltage FLT A+ is at supply voltage level and is used for the LED’s, the back light and to power up the radio via on/off/volume knob. The stabilized +5 volt is used for the microprocessor and the keypad buttons. The voltage USW 5V derived from the FL T A+ voltage and stabilized by the series combination of R0822, VR0822 is used to buffer the internal RAM of the microprocessor (U0831). C0822 allows the supply voltage level to be disconnected for a couple of seconds without losing RAM pa rameters. Dual dio de D0822 prevents radio circuitry from discharging th is cap acitor. When the supply voltage is applied to the radio, C0822 is charged via R0822 and D0822. To avoid, that the µP enters the wrong mode when the radio is switched on while the voltage across C0822 is still too low, the regulated 5V charge C0822 via diode D0822.

2.2 Power On / Off

The on/off/volume knob when pressed switches the radio’s voltage regulators on by connecting line ON OFF CONTROL to line UNSW 5V via D0821. Additionally, 5 volts at the base of digita l transistor Q0822 informs the controlhead’s microprocessor about the pressed knob. The microprocessor asserts pin 62 and line CH REQUEST low to hold line ON OFF CONTROL at 5 volts via Q0823 and D0821. The high line ON OFF CONTROL also informs the host radio, that the controlhead’s microprocessor wants to send data via SBEP bus. When the radio returns a data request message, the microprocessor will inform the radio about the pressed knob. If the radio was switched off, the radio’s µP will switch it on and vice versa. If the on/off/volume knob is pressed while the radio is on, the software detects a low state on line ON OFF SENSE, the radio is alerted via line ON OFF CONTROL and sends a data request message. The controlhead µP will inform the radio about the pressed knob and the radio’s µP will switch the radio off.

2.3 Microprocessor Circuit

The controlhead uses the Motorola 68HC11E9 microprocessor (µP) (U0831) to control the LED’s and to communicate with the host radio. RAM and ROM are contained within the microprocessor itself.

The microprocessor generates it’s clock using the oscillator inside the microprocessor along with a 8 MHz ceramic resonator (U0833) and R0920.

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2-2 THEORY OF OPERATION

The microprocessor’s RAM is always powered to maintain parameters such as the last operating mode. This is achieved by maintaining 5V at µP pin 25. Under normal conditions, when the radio is off, USW 5V is formed by FLT A+ running to D0822. C0822 allows the battery voltage to be disconnected for a couple of seconds without losing RAM parameters. Diode D0822 prevents radio circuitry from discharging this capacitor.

There are 8 analogue to digital converter ports (A/D) on the µP. They are labeled within the device block as PE0-PE7. These lines sense the voltage level ranging from 0 to 5V of the input line and convert that level to a number ranging from 0 to 255 which can be read by the software to take appropriate action.

Pin VRH is the high reference voltage for the A/D ports on the µP. If this voltage is lower than +5V the A/D readings will be incorrect. Likewise pin VRL is the low reference for the A/D ports. This line is normally tied to ground. If this line is not connected to ground, the A/D readings will be incorrect.

The microprocessor can determine the used keypad type and the controlhead ID by reading the levels at ports PC0 – PC7. Connections JU0852/3/4 are provided by the individual keypads.

The MODB / MODA input of the µP must be at a logic „1 " for it to st art executing correctly. The XIRQ and the IRQ pins should also be at a logic „1".

Volt age sense device U0832 pro vides a reset outp ut that goes to 0 vo lts if the regulated 5 vo lts go es below 4.5 volts. This is used to reset the controller to prevent improper operation.

2.4 SBEP Serial Interface

The host radio (master) communicates to the controlhead µP (slave) through its SBEP bus. This bus uses only line BUS+ for data transfer. The line is bi-directional meaning that either the radio or the controlhead µP can drive the line. The microprocessor sends serial data via pin 50 and D0831 and it reads serial data via pin 47. Whenever the microprocessor detect s activity on the BUS+ line, it start s communication.

When the host radio needs to communicate to the controlhead µP, it sends data via line BUS+. Any transition on this line generates an interrupt and the µP starts communication. The host radio may send data like LED and back light status or it may request the controlhead ID or the keypad ID.

When the controlhead µP wants to communicate to the host radio, th e µP brings request line CH REQUEST to a logic „0" via µP pin 62. This switches on Q0823, which pulls line ON OFF CONTROL high through diode D0821. A low to high tran sition on this lin e informs the radio , that the contro lhead requires service. The host radio then sends a data request message via BUS+ and the controlhead µP replies with the data it wanted to send. This data can be information like which key has been pressed or that the volume knob has been rotated.

The controlhead µP monitors all messages sent via BUS+, but ignores any data communication between host radio and CPS or Universal Tuner.

2.5 Keypad Keys

The controlhead keypad is a 6 - key keyp ad. All ke ys are configured as 2 analog ue lines read by µP pins 13 and 15. The voltage on the analogue lines varies between 0 volt s and +5 volt s depending on which key has been pressed. If no key is pressed, the voltage at both lines will be 5 volts. 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 +5 volts. If a button is pressed, it will connect one specific resistor of each divider line to ground level and thereby redu ce the volt age s on the analogue lines The voltages of the lines are A/D converted inside the µP (ports PE 0 - 1) and specify the pressed button. To determine which key is pressed, the voltage of both lines must be considered.

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Controlhead Model for GM140, GM340 and GM640 2-3

An additional pair of analogue lines and A/D µP ports (PE 3 – 2) is available to support a keypad microphone, connected to the microphone connector J08 1 1. Any micro phone key press is pro cessed the same way as a key press on the controlhead.

2.6 Status LED and Back Light Circuit

All indicator LED’s (red, yellow, green) are driven by current sources. To change the LED status the host radio sends a data message via SBEP bus to the controlhead µP. The controlhead µP determines the LED status from the received message and switches th e LED ’s on or off via port PB 7 – 0 and port P A4. The LED status is stored in the µP’s memory. The LED cur ren t is determine d by the resistor at the emitter of the respective current source transistor.

The back light for the keypad is controlled by the host radio the same way as the indicator LED’s using µP port PA 5. The µP can switch the back light on and off under software control. The keypad back light current is drawn from the FLT A+ source and controlled by 2 current sources. The LED current is determined by the resistor at the emitter of the respective current source transistor.

2.7 Microphone Connector Signals

Signals BUS+, PTT IRDEC, HOOK, MIC, HANDSET AUDIO, FLT A+, +5V and 2 A/D conver ter inputs are available at the microphone connector J0811. Signal BUS+ (J08 11-7) connects to the SBEP bus for communication with the CPS or the Universal Tuner. Line MIC (J0811-5) feeds the audio from the microphone to the radio’ s controller via connector J0801-4. Line HANDSET AUDIO (J0811-8) feeds the receiver audio from the controller (J0801-6) to a connected handset. FLT A+, which is at supply voltage level, and +5V are used to supply any connected accessory like a microphone or a handset.

The 2 A/D converter inputs (J0811-9/10) are used for a microphone with keypad. A pressed key will change the dc voltage on both lines. The voltages depend on which key is pressed. The µP determines from the voltage on these lines which key is pressed and sends the information to the host radio.

Line PTT IRDEC (J0811-6) is used to key up the radio’s transmitter. While the PTT button on a connected microphone is released, line PTT IRDEC is pulled to +5 volts level by R0843. Transistor Q0843 is switched on and causes a low at µP port PA2. When the PTT button is presse d, signal P TT IRDEC is pulled to ground level. This switches off Q0843 and the resulting high level at µP port PA2 informs the µP about the pressed PTT button. The µP will inform the host radio about any status change on the PTT IRDEC line via SBEP bus.

When line PTT IRDEC is connected to FLT A+ level, transistor Q0821 is switched on through diode VR0821 and thereby pulls the level on line ON OFF CONT ROL to FLT A+ level. This switches on the radio and puts the radio’s µP in bo otstrap mode. Boot strap mode is used to load the firmware into the radio’s flash memory (See controller subsection for more details).

The HOOK input (J0811-3) is used to inform the µP when the microphone´ s hang-up switch is engaged. Dependent on the CPS programming the µP may t ake actions like turning the audio PA on or off. While the hang up switch is open, line HOOK is pulled to +5 volts level by R0841. Transistor Q0841 is switched on and causes a low at µP port PA1. When the HOOK switch is closed, signal HOOK is pulled to ground level. This switches off R0841and the resulting high level at µP port PA1 informs the µP about the closed hang up switch. The µP will inform the host radio about any status change on the HOOK line via SBEP bus.

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2-4 THEORY OF OPERATION

2.8 Speaker

The controlhead contains a speaker for the receiver audio. The receiver audio signal from the differential audio output of the audio amplifier located on the radio’s controller is fed via connector J0801-10, 11 to the speaker connector P0801 pin 1 and pin 2. The speaker is connected to the speaker connector P0801. The controlhead speaker can be disconnected if an external speaker, connected on the accessory connector, is used.

2.9 Electrostatic Transient Protection

Electrostatic transient protection is provided for the sensitive components in the controlhead by diodes VR0811 VR00812 VR0816 - VR0817. The diodes limit any transient voltages to tolerable levels. The associated capacitors provide Radio Frequency Interference (RFI) protection.

3.0 Controlhead Model for GM160, GM360 and GM660

The controlhead contains the internal speaker, the on/off/volume knob, the microphone connector, several buttons to operate the radio, several indicator Light Emittin g Diodes (LED) to inform the user about the radio status, and a 14 character Liquid Crystal Display (LCD) for alpha - numerical information e.g. channel number or call address name. To control the LED’s and the LCD, and to communicate with the host radio the controlhead uses the Motorola 68HC11E9 microprocessor.

3.1 Power Supplies

The power supply to the controlhead is taken from the host radio’s FLT A+ voltage via connector J0801 pin 3 and the regulated +5V via connector J0801 pin 7. The voltage FLT A+ is at battery level and is used for the LED’s, the back light and to power up the radio via on/off/volume knob. The stabilized +5 volt is used for the microprocessor, the display, the display driver and the keypad buttons. The voltage USW 5V derived from the FLT A+ voltage and stabilized by the series combination of R0822, VR0822 is used to buffer the internal RAM of the microprocessor (U0831). C0822 allows the battery voltage to be disconnected for a couple of seconds without losing RAM parameters. Dual diode D0822 prevents radio circuitry from discharging this capacitor. When the supply voltage is applied to the radio, C0822 is ch arged via R0 822 and D082 2. To avoid that the µP enters the wrong mode when the radio is switched on while the voltage a cross C0822 is still too low, the regulated 5V charge C0822 via diode D0822.

3.2 Power On / Off

The on/off/volume knob when pressed switches the radio’s voltage regulators on by connecting line ON OFF CONTROL to line UNSW 5V via D0821. Additionally, 5 volts at the base of digit al transistor Q0822 informs the controlhead’s microprocessor about the pressed knob. The microprocessor asserts pin 62 and line CH REQUEST low to hold lin e ON OFF CONTROL at 5 volts via Q0823 and D0821. The high line ON OFF CONTROL also informs the host radio, that the controlhead’s microprocessor wants to send data via SBEP bus. When the radio returns a data request message, the microprocessor will inform the radio about the pressed knob. If the radio was switched off, the radio’s µP will switch it on and vice versa. If the on/off/volume knob is pressed while the radio is on, the software detects a low state on line ON OFF SENSE, the radio is alerted via line ON OFF CONTROL and sends a data request message. The controlhead µP will inform the radio about the pressed knob and the radio’s µP will switch the radio off.

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Controlhead Model for GM160, GM360 and GM660 2-5

3.3 Microprocessor Circuit

The controlhead uses the Motorola 68HC11E9 microprocessor (µP) (U0831) to control the LED’s and the LCD and to communicate with the host radio. RAM and ROM are contained within the microprocessor itself.

The microprocessor generates it’s clock using the oscillator inside the microprocessor along with a 8 MHz ceramic resonator (U0833) and R0920.

The microprocessor’s RAM is always powered to maintain parame ters such as the last operating mode. This is achieved by maintaining 5V at µP pin 25. Under normal conditions, when the radio is off, USW 5V is formed by FLT A+ running to D0822. C0822 allows the battery voltage to be disconnected for a couple of seconds without losing RAM parameters. Diode D0822 prevents radio circuitry from discharging this capacitor.

Pin VRH is the high reference voltage for the A/D port s on the µP. If this voltage is lower than +5V the A/D readings will be incorrect. Likewise pin VRL is the low reference for the A/D ports. This line is normally tied to ground. If this line is not connected to ground, the A/D readings will be incorrect.

The microprocessor can determine the used keypad type and the controlhead ID by reading the levels at ports PC0 – PC7. Connections JU0852/3/4 are provided by the individual keypads.

The MODB / MODA input of the µP must be at a logic „1" for it to start executing correctly. The XIRQ and the IRQ pins should also be at a logic „1".

Voltag e sense device U0832 provides a reset ou tput th at goes to 0 volts if the regu lated 5 volts goe s below 4.5 volts. This is used to reset the controller to prevent improper operation.

3.4 SBEP Serial Interface

The host radio (master) communicates to the controlhead µP (slave) through its SBEP bus. This bus uses only line BUS+ for data transfer. The line is bi-directional, meaning that either the radio or the controlhead µP can drive the line. The microprocessor sen ds serial dat a via pin 50 and D0831 an d it reads serial data via pin 47. Whenever the microproce ssor detect s activity on the BUS+ line, it start s communication.

When the host radio needs to communicate to the controlhead µP, it sends data via line BUS+. Any transition on this line generates an interrupt and the µP sta rts communication. The host radio may send data like display information, LED and back light status or it may request the controlhead ID or the keypad ID.

When the controlhead µP wants to communicate to the host radio, the µP brings request line CH REQUEST to a logic „0" via µP pin 62. This switches on Q0823, which pulls line ON OFF CONTROL high through diode D0821. A low to high transition on this line informs the radio, tha t the controlh ead requires service. The host radio then sends a data request message via BUS+ and the controlhead µP replies with the data it wanted to send. This data can be information like which key has been pressed or that the volume knob has been rotated.

The controlhead µP monitors all messages sent via BUS+, but ignores any data communication between host radio and CPS or Universal Tuner.

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2-6 THEORY OF OPERATION

3.5 Keypad Keys

The controlhead keypad is a 6-key kepad (Model B) or a 10- key keypad (model C). All keys are configured as 2 analogue lines read by µP pins 13 and 15. The voltage on the analog ue lines vari es between 0 volts and +5 volts depending on which key has been pressed. If no key is pressed, the voltage at both lines will be 5 volts. 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 +5 volts. 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 analogue lines. The voltages of the lines are A/D converted inside the µP (ports PE 0 - 1) and specify the pressed button. To determine which key is pressed, the voltage of both lines must be considered.

An additional pair of analogue lines and A/D µP ports (PE 3 – 2) is available to support a keypad microphone, connected to the microphone connector J0811. Any microphone key press is processed the same way as a key press on the controlhead.

3.6 Status LED and Back Light Circuit

All the indicator LED’s (red, yellow, green) are driven by current sources. To change the LED status the host radio sends a data message via SBEP bus to the controlhead µP. The controlhead µP determines the LED status from the received message and switches the LED’s on or off via port PB 7 – 0 and port PA4. The LED status is stored in the µP’s me mor y. The LED current is determined by the resistor at the emitter of the respective current source transistor.

The back light for the LCD and the keypad is controlled by the host radio the same way as the indicator LED’s using µP port PA 5. This port is a Pulse Width Modulator (PWM) output. The output signal charges capacitor C0843 through R0 847. By changing the pulse wid th under sof tware control, the dc voltage of C0843 and thereby, the brightness of the back light can be changed in four steps. The keypad back light current is drawn from the FLT A+ source and controlled by transistor Q0933. The current flowing through the LED’s ca use a proportional voltage drop across the par allel resistors R0947, R0948. This voltage drop is amplified by the op-amp U0931-2. U0931-2 and Q0934 form a differential amplifier. The voltage difference between the base of Q0934 and the output of U0931-2 determines the current from the base of the LED control transistor Q0933 and in turn the brightness of the LED’s. The µP can control the LED’s by changing the dc level at the base of Q0934. If the base of Q0934 is at ground level, Q0934 is switched off and no current flows through Q0933 and th e LED’s. If the base voltage of Q0934 rises a current flows throu gh Q0934 and in turn through Q0933 causing the LED’s to turn on and a rising voltage drop across R0947, R0948. The rising voltage causes the output of the op-amp to rise and to reduce the base to emitter voltage of Q0934. This decreases the current of Q0933 until the loop has settled.

3.7 Liquid Crystal Display (LCD)

The LCD H0971 uses the display driver U0971. The display is a single layer super twist nematic (STN) LCD display. It has 14 characters with a 5*8 dot matrix for displaying alpha - numerical information and a line with 21 pre-defined icons above the dot matrix.

The driver contains a data interface to the µP, an LCD segment driver, an LCD power circuit, an oscillator, data RAM and control logic. At power up the driver’s control logic is reset by a logic „0" at input SR2 (U0971-15). The driver’s internal oscillator is set to about 20 kHz and can be measured at pin 22. The driver’s µP interface is configured to accept 8 bit par allel dat a inpu t (U0971- D0-D7) fr om the controlhead µP (U0831 port PC0-PC7).

To write data to the driver’s RAM the µP sets chip select (U0971-20) to logic „0" via U0831-11, RD (U0971-18) to logic „1" via (U0831-10) and WR (U0971-17) to logic „0" via U0831-9. With input A0 (U0971-21) set to logic „0" via U0831-12 the µP writes control data to the driver. Control data

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Controlhead Model for GM160, GM360 and GM660 2-7

includes the RAM start address for the following display data. With input A0 set to logic „1" the µP then writes the display data to the display RAM. When data transfer is complete the µP terminates the chip select, RD and WD activities.

The display driver’s power circuit provides the voltage supply for the display. This circuit consists of a voltage multiplier, voltage regulator and a voltage follower. The external capacitors C0971 - C0973 configure the multiplier to double the supply voltage. In this configuration the multiplier output VOUT (U0971-8) supplies a voltage of -5V (2* -5V below VDD). The multiplied voltage VOUT is sent to the internal voltage regulator. T o set the voltag e level of the reg ulator output V5 (U0971-5) this volt age is divided by the resistors R0973 and R0974 and fed back to the reference input VR (U0971-6). In addition the regulator output voltage V5 can be controlled electronically by a control command sent to the driver. With the used configuration the voltage V5 is about –2V. The voltage V5 is resistively divided by the driver’s voltage follower to provide the voltages V1 - V4. These voltages are needed for driving the liquid crystals. The level of V5 can be meas ured by one of the µP’s analogue to digital converters (U0831-20) via resistive divider R0975, R0976. To stabilize the display brightness over a large temperature range the µP measures the temperature via analogue to digital converter (U0831-

18) using temperature sensor U0834. Dependent on the measured temperature the µP adjusts the driver output voltage V5, and in turn the display brightness, via parallel interface.

3.8 Microphone Connector Signals

The HOOK input (J0811-3) is used to inform the µP when the microphone´ s hang-up switch is engaged. Dependent on the CPS programming the µP may t ake actions like turning the audio PA on or off. While the hang up switch is open, line HOOK is pulled to +5 volts level by R0841. Transistor Q0841 is switched on and causes a low at µP port PA1. When the HOOK switch is closed, signal HOOK is pulled to ground level. This switches off R0841 and the resulting high level at µP port PA1 informs the µP about the closed hang up switch. The µP will inform the host radio about any status change on the HOOK line via SBEP bus.

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2-8 THEORY OF OPERATION

3.9 Speaker

3.10 Electrostatic Transient Protection

4.0 Controlhead Model for GM380, and GM1280

The controlhead contains the on/off/volume knob, the microphone connector, several buttons to operate the radio, several indicator Light Emitting Diodes (LED) to inform the user about the radio status, and a Liquid Crystal Display (LCD) with 21 pre - defined symbols and a 32*96 dot matrix for graphical or alpha - numerical information e.g. channel number, select code, call address name. To control the LED’s and the LCD, and to communicate with the host radio the controlhead uses the Motorola 68HC11K4 microprocessor.

4.1 Power Supplies

The power supply to the controlhead is taken from the host radio’s FLT A+ voltage via connector J0801 pin 3. The voltage FLT A+ is at battery level and is used for the LED’s, the back light, to power up the radio via on/off/volume knob and to supply the voltage regulator circuitry. The regulator circuitry provides the stabilized +5 volts which is used for the microprocessor circuitry, the display, the display driver and the keypad buttons. The regulated +5V taken from the host radio via connector J0801 pin 7 (line 5V SOURCE) is only used to switch on or off the voltage regulator in the control-head.

4.2 Voltage Regulator Circuit

Voltage regulator U0861provides 5V for the controlhead. The supply voltage FLT A+ for the voltage regulator is fed via parallel resistors R0861/2 and dual diode D0861 to pin 8 of U0861. The +5 volt output is switched on and off by the host radios’s 5 volt source via line 5V SOURCE and control transistor Q0866. When the host radio is switched off the vo ltage on line +5V SOURCE is at ground level and switches off transistor Q0866. Pull up resistor R0863 pulls input SHUTDOWN (pin 3) of the voltage regulator U0861 to FLT A+ level and switches off the output of U08 61 (pin 1). Whe n the host radio is switched on the voltage on line 5V SOURCE of about +5 volts switche s on transistor Q0 866 which in turn pulls input SHUTDOWN (pin 3) to ground and switches on the output of U0861. Input and output capacitors (C0861 / C0862 and C0864 / C0865) are used to reduce high frequency noise and provide proper operation during battery transients. Diode D0861 prevents discharge of C0862 by negative spikes on the FLT A+ voltage. This regulator provides a reset output (pin 5) that goes to 0 volts if the regulator output goes out of regulation. This is used to reset the microprocessor (U0871) and the display driver (J0821-5) to prevent improper operation.

The voltage USW 5V derived from voltage FLT A+ is stabilized using resistor R0855 and diode VR0855 This voltage is used to buffer the microprocessor’s internal RAM. C0856 allows the battery voltage to be disconnected for a couple of seconds without losing RAM parameters. Diode D0855

Page 39

Controlhead Model for GM380, and GM1280 2-9

prevents radio circuitry from discharging this capacitor. The +5V at the second anode of D0855 speeds up charging of C0856, when the host radio is turned on by a high level at the ignition input while the supply voltage is applied to the radio. This prevents the microprocessor from accidently entering bootstrap mode.

4.3 Power On / Off

The on/off/volume knob when pressed switches the radio’s and the controlhead‘s voltage regulators on by connecting line ON OFF CONTROL to line UNSW 5V via D0852. Additionally, 5 volts at the base of digital transistor Q0853 informs the controlhead’s microprocessor about the pressed knob. The microprocessor asserts pin 8 and line CH REQUEST low to hold line ON OFF CONTROL at 5 volts via Q0852 and D0852. The high line ON OFF CONTROL also informs the host radio, that the controlhead’s microprocessor wants to send data via SBEP bus. When the radio returns a data request message, the microprocessor will inform the radio about the pressed knob. If the radio was switched off, the radio’s µP will switch it on and vice versa. If the on/off/volume knob is pressed while the radio is on, the software detects a low state on line ON OFF SENSE, the radio is alerted via line ON OFF CONTROL and sends a data request message. The controlhead µP will inform the radio about the pressed knob and the radio’s µP will switch the radio off. If the radio is switched on either manually or automatically it’s +5V source switches on the controlhead’s voltage regulator U0861 via line 5 SOURCE and transistor Q0866 and the controlhead’s microprocessor starts execution.

4.4 Microprocessor Circuit

The controlheadcontrolhead uses the Motorola 68HC11K4 microprocessor (uP) (U0871) to control the LED’s and the LCD and to communicate with the host radio. RAM and ROM ar e containe d within the microprocessor itself.

The microprocessor generates it’s clock using the oscillator inside the microprocessor along with a 8 MHz ceramic resonator (U0873) and R0873.

The microprocessor’s RAM is always powered to maintain parameters such as the last operating mode. This is achieved by maintaining 5V at µP pin 76. Under normal conditions, when the radio is off, USW 5V is formed by FLT A+ running to D0855. C0856 allows the battery voltage to be disconnected for a couple of seconds without losing RAM parameters. Diode D0855 prevents radio circuitry from discharging this capacitor.

Pin VRH is the high reference voltage for the A/D port s on the µP. If this voltage is lower than +5V the A/D readings will be incorrect. Likewise pin VRL is the low reference for the A/D ports. This line is normally tied to ground. If this line is not connected to ground, the A/D readings will be incorrect.

The microprocessor can determine the used keypad type by reading the level at port PE5. Connections S0931 – S0935 are provided by the individual keypads.

The MODB / MODA input of the µP must be at a logic „1" for it to start executing correctly. The XIRQ and the IRQ pins should also be at a logic „1".

4.5 SBEP Serial Interface

Page 40

2-10 THEORY OF OPERATION

reads serial data via pin 78. Whenever the microprocessor detect s activity on the BUS+ line, it start s communication.

When the host radio needs to communicate to the controlhead µP, it sends data via line BUS+. Any transition on this line generates an interrupt and the µP starts communication. The host radio may send data like display information, LED and back ligh t status or it may request the controlhead ID or the keypad ID.

When the controlhead µP wants to communicate to the host radio, th e µP brings request line CH REQUEST to a logic „0" via µP pin 8. This switches on Q0852, which pulls line ON OFF CONT RO L high through diode D0852. A low to high tran sition on this lin e informs the radio , that the contro lhead requires service. The host radio then sends a data request message via BUS+ and the controlhead µP replies with the data it wanted to send. This data can be information like which key has been pressed or that the volume knob has been rotated.

The controlhead µP monitors all messages sent via BUS+, but ignores any data communication between host radio and CPS or Universal Tuner.

4.6 Keypad Keys

The controlhead keypad is a 25 - key keypad. All keys are configu red as 2 analogue lines read by µP pins 49 and 48. The voltage on the analogue lines varies between 0 volt s and +5 volt s depending on which key has been pressed. If no key is pressed, the voltage at both lines will be 5 volts. 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 +5 volts. If a button is pressed, it will connect one specific resistor of each divider line to ground level and thereby redu ce the volt age s on the analogue lines The voltages of the lines are A/D converted inside the µP (ports PE 0 - 1) and specify the pressed button. To determine which key is pressed, the voltage of both lines must be considered.

An additional pair of analogue lines and A/D µP ports (PE 3 – 2) is available to support a keypad microphone, connected to the microphone connector J0811. Any microphone key press is processed the same way as a key press on the controlhead.

4.7 Status LED and Back Light Circuit

All the indicator LED’s (red, yellow, green) are driven by current sources. To change the LED status the host radio sends a data message via SBEP bus to the controlhead µP. The controlhead µP determines the LED status from the received message and switches the LED’s on or off via port PA 6 - 4. The LED status is stored in the µP’s memory. The LED current is determined by the resistor at the emitter of the respective current source transistor.

The back light for keypad is controlled by the host radio the same way as the indicator LED’s using µP port PH 3. This port is a Pulse Width Modulator (PWM) output. The output signal charges capacitor C0943 through R0945. By changing the pu lse wid th under sof tware control, the dc volt age of C0943 and thereby, the brightness of the back light can be changed in 16 steps. The keyp ad back light current is drawn from the FLT A+ source and controlled by transistor Q0941. The current flowing through the LED’s cause a proportional voltage drop across the parallel resistors R0955, R0957. This voltage drop is amplified by the op-amp U0941-1. U0941-1 and Q0943 form a differential amplifier. The voltage difference between the base of Q0943 and the output of U0941-1 determines the current from the base of the LED control transistor Q0941 and in turn the brightness of the LED’s. The µP can control the LED’s by changing the dc level at the base of Q0943. If the base of Q0943 is at ground level, Q0943 is switched off and no current flows through Q0941 and th e LED’s. If the base voltage of Q0943 rises a current flows throu gh Q0943 and in turn through Q0941 causing the LED’s to turn on and a rising voltage drop across R0955, R0957. The rising voltage

Page 41

Controlhead Model for GM380, and GM1280 2-11

causes the output of the op-amp to rise and to reduce the base to emitter voltage of Q0943. This decreases the current of Q0941 until the loop has settled.

The back light for the LCD module uses a similar circuitry. The only differences are that µP port PH2 controls the back light brightness and that the LED’s are located on the LCD module which is connected via J0821. Control line BL A GREEN connects to the anodes and control line BL K GREEN connects to the cathodes of the LED’s.

4.8 Liquid Crystal Display (LCD)

The LCD module consists of the display and the display driver and is connected via connector J0821. The display is a single layer super twist nematic (STN) LCD display. It has a dot matrix of 32 * 96 dots for displaying graphics and alpha - numerical information and a line with 21 pre - defined icons above the dot matrix

The driver contains a data interface to the µP, an LCD segment driver, an LCD power circuit, an oscillator, data RAM and control logic. At power up the driver’s control logic is reset by a logic „0" via pin 5 of J0821. The driver’s µP interface is configured to accept 8 bit parallel data input (J0821-D0D7) from the controlhead µP (U0871 port PC0-PC7).

To write data to the driver’s RAM the µP sets chip select (J0821-6) to logic „0" via U0871-26, RD (J0821-10) to logic „1" via (U0871-40) and WR (U0821-9) to logic „0" via U0871-33. With input A0 (J0821-8) set to logic „0" via U0871-34 the µP writes control data to the driver. Control data includes the RAM start address for the following display data. With input A0 set to logic „ 1" the µP then writes the display data to the display RAM. When data transfer is complete the µP terminates the chip select and the clock activities.

The display driver’s power circuit provides the voltage supply for the display. This circuit consists of a voltage multiplier, voltage regulator and a voltage follower. The regulator output voltage for the display can be controlled electronically by a control command sent to the driver. The voltage level can be measured by one of the µP’s analogue to digital converters (U0871-42) via J0821-21. To stabilize the display brightness over a large temperature range the µP measures the temperature via analogue to digital converter (U0871-43) using a temperature sensor on the module (J0821-4). Dependent on the measured temperature the µP adjusts the driver output voltage, and in turn the display brightness, via parallel interface.

4.9 Microphone Connector Signals

Line PTT IRDEC (J0811-6) is used to key up the radio’s transmitter. While the PTT button on a connected microphone is released, line PTT IRDEC is pulled to +5 volts level by R0880. Transistor Q0871 is switched on and causes a low at µP port PA2. When the PTT button is presse d, signal P TT IRDEC is pulled to ground level. This switches off Q0871 and the resulting high level at µP port PA2

Page 42

2-12 THEORY OF OPERATION

informs the µP about the pressed PTT button. The µP will inform the host radio about any status change on the PTT IRDEC line via SBEP bus.

When line PTT IRDEC is connected to FLT A+ level, transistor Q0851 is switched on through diode VR0851 and thereby pulls the level on line ON OFF CONTROL to FL T A+ level. This switches on the radio and puts the radio’s µP in bootstrap mode. Bootstrap mode is used to load the firmware into the radio’s flash memory (See controller sub section for more details) .

The HOOK input (J0811-3) is used to inform the µP when the microphone´s hang-up switch is engaged. Dependent on the CPS programming the µP m ay take actions like turning the audio PA on or off. While the hang up switch is open, line HOOK is pulled to +5 volts level by R0883. Transistor Q0872 is switched on and causes a low at µP port PA1. When the HOOK switch is closed, signal HOOK is pulled to ground level. This switches off R0883 and the resulting high level at µP port PA1 informs the µP about the closed hang up switch. The µP will inform the host radio about any status change on the HOOK line via SBEP bus.

4.10 Speaker (Remote Mount Configuration only)

The remote mount controlhead contains a speaker for the receiver audio. The receiver audio signal from the differential audio output of the audio amplifier located on the radio’s controller is fed via connector J0801-10,11 to the speaker connector P0801 pin 1 and pin 2. The speaker is connected to the speaker connector P0801. The controlhead speaker can be disconnected if only an external speaker, connected on the accessory connector, should be used. If the controlhead is mounted directly on the radio, an external speaker is required.

4.11 Electrostatic Transient Protection

Electrostatic transient protection is provided for the sensitive components in the controlhead by diodes VR081 1 - VR0 814. The diodes limit a ny transient volt ages to tolerable levels. The associated capacitors provide Radio Frequency Interference (RFI) protection.

Page 43

Chapter 3

TROUBLESHOOTING CHARTS

1.0 Controlhead GM140/340/640 Troubleshooting Chart

1.1 On/Off

Check / Replace

R0822 / VR0822 /

D0822 / C0822

Radio can not be switched on via ON/OFF Volume Knob

YES

R0823 Pin TAB

= 5V ?

R0823 Pin TAB1

when pressed

= 5V ?

Check / Replace

Volume Pot R0823

YES

J0801 Pin 2

> 10V ?

Check / Replace

Q0821

Check / Replace

Q0822 / R0821

YES

J0801 Pin 2

=5V ?

Check / Replace

D0821 / R0852

Press and hold

On/Off Volume Knob

Page 44

3-2 TROUBLESHOOTING CHARTS

1.2 Microprocessor

Power Up Alert Tone is OK but volume knob

does not operate and no indicator is on

YES

EXTAL U0831 Pin 31 = 8.00 MHz ?

RESET

TP0833

= HIGH ?

Check / Replace

C0833 / R0832 / U0831

Check radio controller

Data Signal

on J0801 Pin 5

BUS+ ?

Data Signal

on TP0836

SCI_RX ?

Data Signal

on TP0837

SCI_TX ?

Check / Replace

R0831 / U0833 / U0831

Check / Replace

R0837 / R0836

Check / Replace

U0831

Check / Replace

D0831 / R0838

Measure with scope while

rotating Volume Pot

Page 45

Controlhead GM160/360/660 Troubleshooting Flow Chart 3-3

2.0 Controlhead GM160/360/660 Troubleshooting Flow Chart

2.1 On/Off

Radio can not be switched on via ON/OFF Volume Knob

YES

R0823 Pin TAB

= 5V ?

R0823 Pin TAB1

when pressed

= 5V ?

Check / Replace

Volume Pot R0823

Check / Replace

R0822 / VR0822 /

D0822 / C0822

YES

J0801 Pin 2

> 10V ?

Check / Replace

Q0821

Check / Replace

Q0822 / R0821

YES

J0801 Pin 2

=5V ?

Check / Replace

D0821 / R0852

Press and hold

On/Off Volume Knob

Page 46

3-4 TROUBLESHOOTING CHARTS

2.2 Microprocessor

Measure with scope while

rotating Volume Pot

Power Up Alert Tone is OK but volume knob does

not operate and no indicator is on

YES

EXTAL U0831 Pin 31 = 8.00 MHz ?

RESET TP0833

= HIGH ?

Check / Replace

C0833 / R0832 / U0831

Check radio controller

Data Signal

on J0801 Pin 5

BUS+ ?

Data Signal

on TP0836

SCI_RX ?

Data Signal

on TP0837

SCI_TX ?

Check / Replace

R0831 / U0833 / U0831

Check / Replace

R0837 / R0836

Check / Replace

U0831

Check / Replace

D0831 / R0838

Page 47

Controlhead GM160/360/660 Troubleshooting Flow Chart 3-5

2.3 Display

Power Up Alert Tone is OK, volume knob does operate,

indicator/backlight is on but nothing on display

YES

V5 (against 5V)

TP0973 between

-6V and -7V ?

Activity on

Address & Data lines

A0 / D0..D7 / CS1

of U0971?

Check for shortage

U0831 / U0971

Check LCD Assembly

Check / Replace

C0971 / C0973 / R0972 R0973 / R0974 / U0971

Page 48

3-6 TROUBLESHOOTING CHARTS

2.4 Backlight )

Check / Replace

R0847 / C0843 / R0943

Power Up Alert Tone is OK, volume knob does operate,

indicator/display is on but no backlight

YES

U0831 Pin 58

is toggling ?

Base of

Q0934

> 0.7V ?

Check for shortage

U0831

YES

Collector of

Q0934

>5V and < 11V ?

Check / Replace

Q0934 U0931 /R0941 /

R0942 / R0944 / R0945

Check / Replace

Q0933 / R0947 / R0948

Page 49

Controlhead GM380/1280 Troubleshooting Flow Chart 3-7

3.0 Controlhead GM380/1280 Troubleshooting Flow Chart

3.1 On/Off

R0854

Pin TAB1

when pressed

=5V ?

J0801 PIN2

> 10V ?

J0801 PIN2

=5V?

Check / Replace

Q0853 / R0853

YES

Check / Replace

D0852 / R0852



Check / Replace

Volume Pot R0854

Check / Replace

Q0851



Radio can not be switched on via ON/OFF Volume Knob

YES

R0854

Pin TAB

= 5V?

Check / Replace

R0855 / VR0855 / D0855

C0856

Press and hold

On / Off

Volume Knob

Page 50

3-8 TROUBLESHOOTING CHARTS

3.2 Microprocessor

Power Up Alert Tone is audible on external speaker but volume

knob does not operate and no indicators are on

TP0876

=5V ?

YES

U0871

Pin 73 EXTAL

= 8 MHz

TP0866



= 0V

Check / Replace R0873 / U0873 /

U0871



Check / Replace

R0866 / C0866 / 

Q0866 / R0863



Check / Replace R0861 / R0862 / D0861 C0861 / C0862 / U0861 C0863 / C0864 / C0865



YES

Page 51

Controlhead GM380/1280 Troubleshooting Flow Chart 3-9

3.3 Microprocessor

Data Signal

on J0801

Pin 5 BUS+

Data Signal

on TP0877

SCI_RX

Data Signal

on TP0878

SCI_TX

Check / Replace

D0872 / R0887



YES

Check / Replace

U0871



Check 

Radio Controller



Check / Replace

R0888 / R0889



Measure with scope

while rotating

Volume Pot

Page 52

3-10 TROUBLESHOOTING CHARTS

3.4 Display

TP0973

Voltage Sense

between

2V and 2.4V

?



Activity on

Address & Data lines

A0 / D0...D7 / CS1

of U0971

?



YES

Check / Replace

Flex connection

Resistors on Address & Data

lines and LCD Module

 

Check / Replace 

LCD Module

Check for shortage

U0871



Power Up Alert Tone is audible, volume knob does operate,

indicator/backlight is on but nothing is seen on the display.

Page 53

Controlhead GM380/1280 Troubleshooting Flow Chart 3-11

3.5 Keypad Backlight

U0871 Pin 25

is toggling ?

Base of Q0943

> 0.7V ?

Collector of

Q0943

>5V & < 11V

Check / Replace

Q0941 / R0955 / R0957

 

YES

Check / Replace Q0943 / U0941 / R0941 R0943 / R0949 / R0951



Check for shortage 

U0871



Check / Replace

R0945 / C0943 / R0947



Power Up Alert Tone is audible, volume knob does operate,

display is on but no keypad backlight.

Page 54

3-12 TROUBLESHOOTING CHARTS

3.6 Display Backlight

U0871 Pin 24

is toggling ?

Base of Q0963

> 0.7V ?

Collector of

Q0963

>5V & < 11V

Check / Replace

Q0961 / R0975 / R0977

 

YES

Check / Replace Q0963 / U0941 / R0961 R0963 / R0969 / R0971



Check for shortage 

U0871



Check / Replace

R0965 / C0963 / R0967



Power Up Alert Tone is audible, volume knob does operate,

display is on but no display backlight.

Page 55

Chapter 4

CONTROLHEAD PCB / SCHEMATICS / PARTS LISTS

1.0 Allocation of Schematics and Circuit Boards

Table 4- 1 Controlhead Diagrams and Parts Lists

PCB :

Controlhead GM140/340/640

8486146B07/8471236L01

Main Board Top Side

8486146B07/8471236L01

Main Board Bottom Side

Page 4-3 Page 4-3

SCHEMATICS

Sheet 1 of 2 Sheet 2 of 2

Page 4-4 Page 4-5

Parts List

8486146B07 8471236L01

Page 4-6 Page 4-7

Table 4- 2 Controlhead Diagrams and Parts Lists

PCB :

Controlhead GM160/360/660

8486155B06/8415672H03

Main Board Top Side

8486155B06/8415672H03

Main Board Bottom Side

Page 4-8 Page 4-8

SCHEMATICS

Sheet 1 of 4 Sheet 2 of 4 Sheet 3 of 4 Sheet 4 of 4

Page 4-9 Page 4-10 Page 4-11 Page 4-12

Parts List

8486155B06 8415672H03

Page 4-13 Page 4-14

Page 56

4-2 controlhead PCB / Schematics / Parts lists

Table 4-3 Controlhea d Dia gram s an d Pa rts Lists

PCB :

Controlhead GM380/1280

8486178B03/04/8471237L01

Main Board Top Side

8486178B03/04/8471237L01

Main Board Bottom Side

Page 4-15 Page 4-15

SCHEMATICS

Sheet 1 of 4 Sheet 2 of 4 Sheet 3 of 4 Sheet 4 of 4

Page 4-16 Page 4-17 Page 4-18 Page 4-19

Parts List

8486178B03/04 8471237L01

Page 4-20 Page 4-21

Page 57

Controlhead GM140/340/640 - PCB 8486146B07/8471236L01 / Schematics 4-3

2.0 Controlhead GM140/340/640 - PCB 8486146B07/8471236L01 / Schematics

D0871

D0872

D0873

D0874

D0875

D0876

D0877

D0878

D0879

D0881

D0884

D0885

D0886

D0887

D0888

3579

864 10

J0811

JU0852

JU0853

JU0854

R0823

S0861

S0862

S0863

S0864

S0865

S0866

ZWG0130114-A

C0802

C0803

C0804

C0805

C0806

C0808

C0809

C0810

C0811

C0813

C0815

C0816

C0817

C0818

C0819

C0821

C0822

C0823

C0824

C0831

C0832

C0833

C0843

D0821

D0822

D0831

J0801

P0801

Q0821

Q0822

Q0823

Q0841

Q0843

Q0871

Q0872

Q0873

Q0874

Q0875

Q0876

Q0877

Q0878

Q0879

Q0881

Q0885

R0810

R0811

R0812

R0813

R0814

R0815

R0816

R0821

R0822

R0824

R0825

R0832

R0833

R0834

R0835

R0836

R0837

R0838

R0839

R0841

R0842

R0843

R0844

R0845

R0847

R0849

R0852

R0853

R0854

R0861

R0862

R0864

R0866

R0867

R0871

R0872

R0873

R0874

R0875

R0876

R0877

R0878

R0879

R0880

R0881

R0885

TP0831

TP0832

TP0833

TP0834

TP0835

TP0836

TP0837

TP0838

U0831

U0832

U0833

U0835

VR0811

VR0816

VR0817

VR0821

VR0822

VR0823

MOTOROLA

8486146B07-0

Controlhead GM140/340/640 - PCB8486146B07/

8471236L01

ZWG0130114-A Top Side

ZWG0130113-B Bottom Side

Page 58

4-4 Controlhead GM140/340/640 - PCB 8486146B07/8471236L01 / Schematics

HOOK

GROUND

MIC

GM300

CONTROL HEAD

PTT_IRDECODER

CONNECTOR

J0801

MICROPHONE

CONNECTOR

SCI_RX

BOOT_VPP

J0811

RESET

BOOT_MODE

WARIS

HANDSET_AUDIO

CONTROLLER

KEYPAD ID

CONTROL HEAD ID

SCI_TX

EXT_KP_ROW

EXT_KP_COL

FLT_A+

456

BUS+

VR0822

5.6V

R0843

2.2K

GND

INPUT

RESET_

U0835

MC33464N-45ATR

J0801-8

JU0853 SWITCH

C0833

R0833

0.1uF

47K

10K

R0844

VDD22VRH

VRL

VSS1

VSS2

VSS3

XIRQ

XTAL

PE3_AN3

PE4_AN4

14 16

PE5_AN5 PE6_AN6

PE7_AN7

RESET

STRA_AS

STRB_RW*

PD1_TXD

PD2_MISO

PD3_MOSI

52 53

PD4_SCK PD5_SS*

PE0_AN0

PE1_AN1

PE2_AN2

PC1_AD1

PC2_AD2

PC3_AD3

PC4_AD4

39 40

PC5_AD5 PC6_AD6

PC7_AD7

PD0_RXD

PB1_A9

PB2_A10

PB3_A11

PB4_A12

8 7

PB5_A13 PB6_A14

PB7_A15

PC0_AD0

PA1_IC2

PA2_IC1

PA3_OC5_OC1

PA4_OC4_OC1

PA5_OC3_OC1

PA6_OC2_OC1

PA7_PA1_OC1

PB0_A8

NC34NC426NC5

NC644NC7

NC8

NC9

PA0_IC3

CLK_E

EXTAL

IRQ

MODA_LIR*

MODB_VSTBY

NC1

NC10

NC2

MC68HC711E9

U0831

J0801-11

J0801-7

TP0832

50K

NEG

POS

TAB

TAB1

VAR

R0823

4.7K

R0824

J0811-5

Q0843

R0835

100

R0839

R0847

J0811-4

270

R0814

R0815

0.1uF

C0832

13K

C0831

3.3uF

J0811-1

C0823

.01uF

C0809

82pF

Q0823

D0822

R0813

GND

R0812

CSTCC8.00MG

U0833

5.6V

VR0821

100K

R0853

5.6V

VR0823

J0811-10

P0801-2

J0801-9

TP0837

INPUT

NC1

NC2

NC3

NC4

7 8

NC5

RESET

U0832

MC33064

GND

Q0821

J0811-6

J0801-10

J0801-6

JU0852

SWITCH

JU0854

SWITCH

C0804 470pF

R0852 100K

C0817 82pF

J0811-8

R0845

4.7K

VR0811

33V

470pF

C0818

C0816

33K

R0837

C0808 470pF

470pF

C0806

10K

R0841

R0811

51K

J0811-3

J0811-2

1MEG

R0831

VR0816

20V

13K

J0811-9

R0810

TP0833

10K

R0821

47K

J0801-14

R0849

P0801-1

2.2K

R0832

J0801-3

J0801-5

TP0838

TP0834

470pF

C0810 470pF

C0819

100K

R0854

J0801-12

R0838 10K

J0811-7

R0834

270

20V

VR0817

2.2uF

J0801-4

C0822

470pF

13K

C0821

R0816

R0822

51K

470pF

C0815

C0811

470pF

TP0831

R0836 10K

TP0836

J0801-13

J0801-1

J0801-2

470pF

C0802

C0803 470pF

470pF

C0843

C0813

TP0835

470pF

C0824

.01uF

R0825

D0821

C0805 82pF

Q0822

R0842

47K

Q0841

INT_KP_ROW

INT_KP_COL

USW_5V

FLT_A+

BUS+

EXT_KP_ROW

MIC

EXT_KP_COL

FLT_A+

D0831

CH_KP_ID(0:7)

LED_CNTRL(0:8)

CH_REQUEST

PTT_IRDEC

HOOK

ON_OFF_SENSE

ON_OFF_CONTROL

USW_5V

VOLUME

EXT_KP_ROW

EXT_KP_COL

PTT_IRDEC

FLT_A+

PTT_IRDEC

SCI_TX

BUS+

BL_GREEN

ON_OFF_SENSE

HOOK

HANDSET_AUDIO

ON_OFF_CONTROL

FLT_A+

MIC

BUS+

HANDSET_AUDIO

Shown from Front Side

Controlhead GM140/340/640 - Schematic Sheet 1 of 2

ZWG01300239-B

Page 59

Controlhead GM140/340/640 - PCB 8486146B07/8471236L01 / Schematics 4-5

S0862

LED5LED4 LED6LED1 LED2 LED3

F4 P2

F3 P1

F1 F2 F3 F4

P1 P2

LED1 LED2 LED3

1V/1V

0V/0V

0V/1V

LED4

LED6 LED5

S0864 S0863 S0861

S0866 S0865

KEYPAD

red yellow green

0V/2V

0V/3V

1V/0V

R0867

green

D0885

13K

green

D0888

D0886 green

green

D0887

green

D0884

green

D0881

270

R0885

270

R0881

Q0885

S0865

R0864

S0861

43K

R0866

51K

R0861

51K

R0880

22K

13K

R0862

S0864

S0863

S0862 S0866

270

green

R0877

D0877

D0879

Q0877

red

270

R0878

Q0879

Q0878

yellow

D0878

Q0873

R0879 270

R0871

270

Q0871 Q0872

red

D0876

D0875

red

D0874

R0876

270

R0875

270

R0874

Q0876

270

Q0875Q0874

CH_A sheet 2

red

Q0881

D0872 D0873

red red

R0873

D0871

270

R0872

FLT_A+

LED_CNTRL(0:8)

BL_GREEN

FLT_A+

LED_CNTRL(0:8)

INT_KP_COL

INT_KP_ROW

270

ZWG0130240-A

Controlhead GM140/340/640 - Schematic Sheet 2 of 2

Page 60

4-6 Controlhead GM140/340/640 - PCB 8486146B07/8471236L01 / Schematics

2.1 Controlhead PCB 8486146B07 Parts List

* Motorola Depot Servicing only

Reference designators with an asterisk indicate components which are not fieldreplaceable because they need to be calibrated with specialized factory equipment after installation. Radios in which these parts have been replaced in the field will be off frequency at temperature extremes.

Circuit

Ref

Motorola

Part No

Description

C0802 2113741F17 470pF 50V C0803 2113741F17 470pF 50V C0804 2113741F17 470pF 50V C0805 2113740F49 82pF 5% 50V C0806 2113741F17 470pF 50V C0808 2113741F17 470pF 50V C0810 2113741F17 470pF 50V C0811 2113741F17 470pF 50V C0813 2113741F17 470pF 50V C0815 2113741F17 470pF 50V C0816 2113741F17 470pF 50V C0817 2113740F49 82pF 5% 50V C0818 2113741F17 470pF 50V C0821 2113741F17 470pF 50V C0822 2311049A40 TANT CP 2.2uF 10% 10V C0823 2113741F49 10nF 50V C0824 2113741F49 10nF 50V C0831 2311049A42 TANT CP 3.3uF 10% 6V C0832 2113743E20 100nF 16V C0833 2113743E20 100nF 16V C0843 2113741F17 470pF 50V D0821 4813833C02 DUAL SOT MMBD6100 D0822 4813833C02 DUAL SOT MMBD6100 D0831 4880236E05 DIODE CHIP SCHOTTKY D0871 4886171B01 LED RED D0872 4886171B01 LED RED D0873 4886171B01 LED RED D0874 4886171B01 LED RED D0875 4886171B01 LED RED D0876 4886171B01 LED RED D0877 4886171B01 LED RED D0878 4886171B03 LED YELLOW D0879 4886171B04 LED GREEN D0881 4886171B04 LED GREEN D0884 4886171B04 LED GREEN D0885 4886171B04 LED GREEN D0886 4886171B04 LED GREEN D0887 4886171B04 LED GREEN D0888 4886171B04 LED GREEN J0801 0902636Y02 CONNECTOR FLEX 12 PIN J0811 2864287B01 CONN TELCO 10 PIN JACK P0801 2809926G01 CONN 1.25MM 2PIN SURMT Q0821 4805921T02 TSTR DUAL ROHM FMC2

RH Q0822 4880048M01 TSTR NPN DIG 47k/47k Q0823 4805921T02 TSTR DUAL ROHM FMC2

Q0841 4880048M01 TSTR NPN DIG 47k/47k Q0843 4880048M01 TSTR NPN DIG 47k/47k Q0871 4813824A10 TSTR NPN 40V .2A B=50-150 Q0872 4813824A10 TSTR NPN 40V .2A B=50-150 Q0873 4813824A10 TSTR NPN 40V .2A B=50-150 Q0874 4813824A10 TSTR NPN 40V .2A B=50-150 Q0875 4813824A10 TSTR NPN 40V .2A B=50-150 Q0876 4813824A10 TSTR NPN 40V .2A B=50-150 Q0877 4813824A10 TSTR NPN 40V .2A B=50-150 Q0878 4813824A10 TSTR NPN 40V .2A B=50-150 Q0879 4813824A10 TSTR NPN 40V .2A B=50-150 Q0881 4813824A10 TSTR NPN 40V .2A B=50-150 Q0885 4813824A10 TSTR NPN 40V .2A B=50-150 R0810 0662057A76 13k 1/16W 5% R0811 0662057A90 51k 1/ 16W 5% R0812 0662057A09 22 1/16W 5% R0813 0662057A01 10 1/16W 5% R0814 0662057A35 270 1/16W 5% R0815 0662057A76 13k 1/ 16W 5% R0816 0662057A90 51k 1/16W 5% R0821 0662057A73 10k 1/ 16W 5% R0822 0662057A76 13K 1/16W 5% R0823 1805911V02 POT VOL R0824 0662057A65 4k7 1/16W 5% R0825 0662057A49 1k 1/16W 5% R0831 0662057B22 1M 1/16W 5% R0832 0662057A57 2k2 1/ 16W 5% R0833 0662057A89 47k 1/16W 5% R0834 0662057A35 270 1/16W 5% R0835 0662057A25 100 1/16W 5% R0836 0662057A73 10k 1/ 16W 5% R0837 0662057A85 33k 1/16W 5% R0838 0662057A73 10k 1/ 16W 5% R0841 0662057A73 10k 1/16W 5% R0842 0662057A89 47k 1/ 16W 5% R0843 0662057A57 2.2k 1/16W 5% R0844 0662057A73 10k 1/ 16W 5% R0845 0662057A65 4k7 1/16W 5% R0847 0662057A09 22 1/16W 5% R0849 0662057A89 47k 1/16W 5% R0852 0662057A97 100k 1/16W R0853 0662057A97 100k 1/16W R0854 0662057A97 100k 1/16W R0861 0662057A90 51k 1/16W 5% R0862 0662057A76 13k 1/ 16W 5% R0864 0662057A88 43k 1/16W 5% R0866 0662057A90 51k 1/ 16W 5% R0867 0662057A76 13k 1/16W 5% R0873 0660076A35 270 5 1/8 R0874 0660076A35 270 5 1/8 R0875 0660076A35 270 5 1/8

Circuit

Ref

Motorola

Part No

Description

R0876 0660076A35 270 5 1/8 R0877 0660076A35 270 5 1/8 R0878 0660076A35 270 5 1/8 R0879 0660076A35 270 5 1/8 R0880 0662057A81 22k 1/16W 5% R0881 0662057A35 270 1/16W 5% R0885 0662057A35 270 1/16W 5% *U0831 5113802A24 IC 68HC11 W/SCI,SPI,A/D U0832 5113815A02 IC U0833 4886061B01 CER RESONATOR 8MHZ

CSTCC8.00MG

VR0816 4805656W09 DIODE ZENER QUAD

MMQA20VT1

VR0817 4805656W09 DIODE ZENER QUAD

MMQA20VT1 VR0821 4813830A15 DIODE 5.6V 5% 225mW VR0822 4813830A15 DIODE 5.6V 5% 225mW VR0823 4813830A15 DIODE 5.6V 5% 225mW

Circuit

Ref

Motorola

Part No

Description

Page 61

Controlhead GM140/340/640 - PCB 8486146B07/8471236L01 / Schematics 4-7

2.2 Controlhead PCB 8471236L01 Parts List

* Motorola Depot Servicing only Reference designators with an asterisk indicate

components which are not fieldreplaceable because they need to be calibrated with specialized factory equipment after installation. Radios in which these parts have been replaced in the field will be off frequency at temperature extremes.

Circuit

Ref

Motorola

Part No

Description

C0803 2113945L17 CAP 470PF C0804 2113945L17 CAP 470PF C0805 2113944C43 CAP 82PF C0808 2113945L17 CAP 470PF C0811 2113945L17 CAP 470PF C0813 2113945L17 CAP 470PF C0815 2113945L17 CAP 470PF C0816 2113945L17 CAP 470PF C0817 2113944C43 CAP 82PF C0822 2313960B28 CAP 2.2UF C0823 2113945L49 CAP 0.01UF C0831 2313960B54 CAP 3.3UF C0832 2113945C31 CAP 0.1UF C0833 2113945C31 CAP 0.1UF C0843 2113945L17 CAP 470PF D0821 4813978C02 DIODE DUAL 70V D0822 4813978C02 DIODE DUAL 70V D0831 4813974A05 DIODE MMBD301L D0871 4886171B01 LED RED WM D0872 4886171B01 LED RED WM D0873 4886171B01 LED RED WM D0874 4886171B01 LED RED WM D0875 4886171B01 LED RED WM D0876 4886171B01 LED RED WM D0877 4886171B01 LED RED WM D0878 4886171B03 LED YELLOW WM D0879 4886171B04 LED GREEN WM D0881 4886171B04 LED GREEN WM D0884 4886171B04 LED GREEN WM D0885 4886171B04 LED GREEN WM D0886 4886171B04 LED GREEN WM D0887 4886171B04 LED GREEN WM D0888 4886171B04 LED GREEN WM J0801 0916162H02 12 POS FLEX CONNECTOR J0811 2864287B01 CONN 10 MODULAR JACK P0801 2815162H01 HEADER SMT HORZ MOUNT Q0821 4816097H01 XSTR FMC2 RH Q0822 4813973A42 XSTR NPN SC-59 Q0823 4816097H01 XSTR FMC2 RH Q0841 4813973A42 XSTR NPN SC-59 Q0843 4813973A42 XSTR NPN SC-59 Q0871 4813973M07 XSTR NPN TO-236 Q0872 4813973M07 XSTR NPN TO-236 Q0873 4813973M07 XSTR NPN TO-236

Q0874 4813973M07 XSTR NPN TO-236 Q0877 4813973M07 XSTR NPN TO-236 Q0878 4813973M07 XSTR NPN TO-236 Q0875 4813973M07 XSTR NPN TO-236 Q0876 4813973M07 XSTR NPN TO-236 Q0879 4813973M07 XSTR NPN TO-236 Q0881 4813973M07 XSTR NPN TO-236 Q0885 4813973M07 XSTR NPN TO-236 R0810 0613952J04 RES 13K OHM R0811 0613952J18 RES 51K OHM R0812 0613952H33 RES 22.0 OHM R0813 0613952H25 RES 10.0 OHM R0814 0613952H59 RES 270 OHM R0815 0613952J04 RES 13K OHM R0816 0613952J18 RES 51K OHM R0821 0613952J01 RES 10K OHM R0822 0613952J04 RES 13K OHM R0823 1866500A01 POTENTIOMETER R0824 0613952H89 RES 4700 OHM R0825 0613952H73 RES 1000 OHM R0831 0613952J49 RES 1M OHM R0832 0613952H81 RES 2200 OHM R0833 0613952J17 RES 47K OHM R0834 0613952H59 RES 270 OHM R0835 0613952H49 RES 100 OHM R0836 0613952J01 RES 10K OHM R0837 0613952J13 RES 33K OHM R0838 0613952J01 RES 10K OHM R0841 0613952J01 RES 10K OHM R0842 0613952J17 RES 47K OHM R0843 0613952H81 RES 2200 OHM R0844 0613952J01 RES 10K OHM R0845 0613952H89 RES 4700 OHM R0847 0613952H33 RES 22.0 OHM R0849 0613952J17 RES 47K OHM R0852 0613952J25 RES 100K OHM R0853 0613952J25 RES 100K OHM R0854 0613952J25 RES 100K OHM R0861 0613952J18 RES 51K OHM R0862 0613952J04 RES 13K OHM R0864 0613952J16 RES 43K OHM R0866 0613952J18 RES 51K OHM R0867 0613952J04 RES 13K OHM R0871 0613958H59 RES 270 OHM R0872 0613958H59 RES 270 OHM R0873 0613958H59 RES 270 OHM R0874 0613958H59 RES 270 OHM R0875 0613958H59 RES 270 OHM

Circuit

Ref

Motorola

Part No

Description

R0876 0613958H59 RES 270 OHM R0877 0613958H59 RES 270 OHM R0878 0613958H59 RES 270 OHM R0879 0613958H59 RES 270 OHM R0880 0613952J09 RES 22K OHM R0881 0613952H59 RES 270 OHM R0885 0613952H59 RES 270 OHM U0831 5116526H01 8 BIT MICRO CONTROLLER U0832 5114004A02 IC MC33064 U0833 4886061B01 CER RESO 8.00MHZ VR0816 4813979C11 DIODE SOT-26/SC-74 VR0817 4813979C11 DIODE SOT-26/SC-74 VR0821 4813977M11 DIODE MBZ5232 VR0822 4813977M11 DIODE MBZ5232 VR0823 4813977M11 DIODE MBZ5232

Circuit

Ref

Motorola

Part No

Description

Page 62

4-8 Controlhead GM160/360/660 - PCB 8486155B06/8415672H03 / Schematics

3.0 Controlhead GM160/360/660 - PCB 8486155B06/8415672H03 / Schematics

D0877

D0879

D0880

D0931

D0932

D0933

D0934

D0935

D0936

D0937

D0938

D0939

D0940

D0941

D0942

D0943

D0944

D0945

D0946

D0947

D0948

D0949

D0950

D0951

D0952 D0953

D0954

D0955

D0956

D0957

D0958

D0961

D0962

D0963

D0964

D0965

D0966

D0967

D0968

D0969

D0970

D0971

D0972

D0973

D0974 D0975

D0976

D0977

D0978

D0979

D0980

D0981

D0982 D0983

D0984

D0985

D0986

D0987

D0988

H0971

3579

864 10

J0811

R0823

S0852

S0853

S0854

S0901

S0902

S0903

S0904

S0905

S0906

S0907

S0908

S0909

S0910

U0834

ZWG0130136-A

C0802

C0803

C0804

C0805

C0806

C0807

C0808

C0810

C0811

C0812

C0813

C0815

C0816

C0817

C0818

C0819

C0821

C0822

C0823

C0831

C0832

C0833

C0842

C0843

C0931

C0932

C0933

C0971

C0972

C0973

C0974

C0975

C0976

C0977

C0978

C0979

C0980

C0981

C0982

C0983

C0984

C0985

D0821

D0822

D0831

J0801

P0801

Q0821

Q0822

Q0823

Q0841

Q0843

Q0877

Q0878

Q0879

234

Q0931

Q0932

234

Q0933

Q0934

R0810

R0811

R0812

R0813

R0814

R0815

R0816

R0817

R0821

R0822

R0824

R0825

R0831

R0832

R0833

R0834

R0835

R0836

R0837

R0838

R0841

R0842

R0843

R0844

R0845

R0847

R0848

R0849

R0850

R0851

R0852

R0853

R0854

R0855

R0856

R0857

R0858

R0859

R0860

R0861

R0862

R0863

R0864

R0865

R0877

R0878

R0879

R0901

R0902

R0903

R0904

R0905

R0906

R0907

R0908

R0909

R0910

R0931

R0932

R0933

R0934

R0935

R0936

R0937

R0938

R0941

R0942

R0943

R0944

R0945

R0946

R0947

R0948

R0972

R0973

R0974

R0975

R0976

R0977

R 0978

TP0831

TP0832

TP0833

TP0834

TP0835

TP0836

TP0837

TP0838

TP0971

TP0972

TP0973

TP0974

TP0975

U0831

U0832

U0833

U0835

U0931

128

103

102

U0971

VR0811

VR0812

VR0816

VR0817

VR0821

VR0822

MOTOROLA

8486155B06-0

ZWG0130136-A Top Side

ZWG0130137-B Bottom Side

Controlhead GM160/360/660 - PCB 8486155B06/

8415672H03

Page 63

Controlhead GM160/360/660 - PCB 8486155B06/8415672H03 / Schematics 4-9

MIC

PTT_IRDECODER

BUS+

KEYPAD ID

CONTROLLER

NOT PLACED

PLACED

VPP

HANDSET_AUDIO

ANALOG_INPUT_3

BOOT_MODE

SCI_RX

SCI_TX

FLT_A+

RESET

TEMP_SENSE

CONTROL HEAD ID

GND

HOOK

CONTROLHEAD

CONNECTOR

GROUND

ANALOG_INPUT_2

FLT_A+

J0801

J0801-8

4.7K

R0864

270

R0814

R0815

13K

R0810

13K

Q0841

J0801-5

R0833 47K

R0832

2.2K

R0837

33K

270

R0877

J0811-8

R0852

47K

GND

INPUT RESET_

U0835

MC33464N-45ATR

S0854

SWITCH

S0853

J0801-3

S0852

SWITCH

J0801-10

J0801-13

J0811-9

J0801-14

J0811-10

6 7

R0813

J0801-7

5.6V

VR0822

D0831

Q0821

U0833

CSTCC8.00MG

GND

J0811-6

J0801-4

470pF

C0812

R0817

47K

R0851

green

D0879

R0857

47K

D0880 yellow

47K NU

R0854

47K

R0859

10K

R0841

2.2K

R0843

51K

R0816

J0811-7

Q0823

R0831

TAB1

VAR

1MEG

R0823 50K

NEG

POS

TAB

J0801-12

J0801-9

R0848

68K

C0831

NC4 NC5

RESET

3.3uF

MC33064

GND

INPUT

NC1

NC2

NC3

U0832

R0812

R0879

270

R0878 270

D0822

J0811-5

R0844 10K

R0865

4.7K

100K

R0860

47K

R0853

J0801-11

Q0822

4.7K

R0845

C0842

2.2uF

Q0879Q0878

red

D0877

R0811

Q0877

51K

TP0833

R0825

470pF

C0804

13K

TP0836

R0822

TP0834

470pF

C0821

VR0812

5.6V

R0863

4.7K

R0850

47K

R0856

47K

82pF

C0805

VDD22VRH

VRL

VSS124VSS249VSS3

XIRQ

XTAL

PE4_AN4

PE5_AN5

PE6_AN6

PE7_AN7

RESET

STRA_AS

STRB_RW*

PD2_MISO

PD3_MOSI

PD4_SCK

PD5_SS*

PE0_AN0

PE1_AN1

PE2_AN2

PE3_AN3

PC2_AD2

PC3_AD3

PC4_AD4

PC5_AD5

PC6_AD6

PC7_AD7

PD0_RXD

PD1_TXD

PB2_A10

PB3_A11

PB4_A12

PB5_A13

PB6_A14

PB7_A15

PC0_AD0

PC1_AD1

PA1_IC2

PA2_IC1

PA3_OC5_OC1

PA4_OC4_OC1

PA5_OC3_OC1

PA6_OC2_OC1

PA7_PA1_OC1

PB0_A8

PB1_A9

NC326NC432NC5

NC644NC748NC860NC9

PA0_IC3

CLK_E

EXTAL

IRQ

MODA_LIR*

MODB_VSTBY

NC1

NC10

NC2

MC68HC711E9

U0831

J0811-4

J0811-3

J0811-2

C0822

2.2uF

R0838

10K

R0836 10K

VR0816

20V

VR0817

20V

2.2uF

C0843

0.1uF

C0832

C0833

0.1uF

47K

R0842

VR0821

5.6V

C0819

C0816

470pF

82pF

C0817

TP0831

P0801-2

P0801-1

TP0835

C0806 470pF

47K

R0849

47K

R0855

470pF

C0803

R0847

68K

470pF

C0813

C0815 470pF

47K

C0807

R0858

470pF

Q0843

VOUT

D0821

U0834 LM50

GND

POS

R0821 10K 6

J0801-1

270

R0834

322

J0801-6

R0824

4.7K

470pF

C0802

470pF

C0810

VR0811

33V

C0811

470pF

C0818

100K

R0862

TP0837

TP0832 TP0838

100

R0835

100K

R0861

J0801-2

J0811-1

82pF

C0808

C0823 .01uF

BL_RED

BL_GREEN

BUS+

RESET

HOOK

MIC

FLT_A+

SCI_TX

VOLTAGE_SENSE

HANDSET_AUDIO

PTT_IRDEC

BUS+

AN(0:4)

USW_5V

FLT_A+

CH_REQUEST

ON_OFF_CONTROL

PTT_IRDEC

HOOK

CH_REQUEST

ON_OFF_SENSE

SCI_TX

HANDSET_AUDIO

BUS+

MIC

FLT_A+

ON_OFF_CONTROL

FLT_A+

LED_CNTRL(0:8)

ON_OFF_SENSE

PTT_IRDEC

FLT_A+

AN(0:4)

USW_5V

FLT_A+

AN(0:4)

CH_KP_ID(0:7)

CONTROLHEAD B NU NU NU USED USED USED USED NU  CONTROLHEAD C NU NU USED NU USED USED NU USED  

R0850 R0851 R0852 R0853 R0855 R0856 R0857 R0858

GM300

789

MICROPHONE

CONNECTOR

J0811

WARIS

145623

Shown from Front Side

ZWG0130241-B

Controlhead GM160/360/660 - Schematic Sheet 1 of 4

ZWG0130241-B

Page 64

4-10 Controlhead GM160/360/660 - PCB 8486155B06/8415672H03 / Schematics

SW0906 SW0904

SW0903 SW0901

SW0909 SW0910

SW0908SW0907

SW0902

SW0905

KEYPAD C

SW0908

SW0905

SW0902

KEYPAD B

P3P1

P2 P4

SW0906

SW0910

SW0903

SWITCH

S0901

SWITCH

S0905

SWITCH

S0902

SWITCH

S0910

SWITCH

S0908

SWITCH

S0906

SWITCH

S0903

43K

R0909

43K

130K

R0904

130K

R0910

R0905

R0906

51K

R0901

51K

R0908

22K

R0903

22K

R0902

13K

R0907

13K

CH_C sheet 2

CH_B

SWITCH

S0909

SWITCH

S0907

SWITCH

S0904

COL2

COL1

ROW2

ROW1

ROW3 COL3

ROW5

ROW4

COL5

COL4

AN(0:4)

COL3 COL2

ROW1

ROW2

ROW3

ROW4

COL4

Controlhead GM160/360/660 - Schematic Sheet 2 of 4

ZWG0130242-A

Page 65

Controlhead GM160/360/660 - PCB 8486155B06/8415672H03 / Schematics 4-11

BACKLIGHT REDBACKLIGHT GREEN

Q0931

D0980

D0979

D0978

R0946

D0977

R0945

10K

33K

10K

R0942

10K

R0941

D0972

R0944

100K

R0947

R0948

U0931-2

MC33072

100K

Q0933

D0987

R0934

D0986

D0985

D0984

10K

R0935

D0969

D0951

D0967

D0966

D0964

D0965

D0963

D0970

D0962

D0971

D0947

D0943

Q0934

D0932

4.7K

D0931

R0943

C0931

0.1uF

R0938

R0937 10

C0932

0.1uF

R0936

10K

R0932

D0949

33K

R0931

10K

Q0932

MC33072

U0931-1

D0942

D0941

D0940

D0938

D0937

D0958

D0957

D0956

D0954

D0953

D0952

D0950

D0975

D0976

D0974

D0973

D0939

D0935

D0933

D0934

0.1uF

C0933

D0936

D0968

D0988

4.7K NU

R0933

D0961

D0983

D0982

D0981 D0955

D0948

D0946

D0944

D0945

FLT_A+

BL_GREEN BL_RED

FLT_A+

Controlhead GM160/360/660 - Schematic Sheet 3 of 4

ZWG0130243-A

Page 66

4-12 Controlhead GM160/360/660 - PCB 8486155B06/8415672H03 / Schematics

THE LCD IS PART OF HARDWAREKITS GLN7358A (EUR) AND GLN7359A (US)

R0974

1.8MEG

R0973

1.2MEG

R0972

C0972

1uF

C0971

2.2uF

C0985

.01uF

1uF

C0984

C0973

0.1uF

C0980

0.1uF

C0976C0975

0.1uF

C0974

0.1uF

C0982

0.1uF

C0981C0979

0.1uF NU

0.1uF

C0977

34567

100K

R0978

200K

R0977

100K

R0976

SEG69_C70

SEG6_C7

SEG7_C8

SEG8_C9

SEG9_C10

SEG61_C62

SEG62_C63

SEG63_C64

SEG64_C65

SEG65_C66

SEG66_C67

SEG67_C68

SEG68_C69

SEG54_C55

SEG55_C56

SEG56_C57

SEG57_C58

SEG58_C59

SEG59_C60

SEG5_C6

SEG60_C61

SEG47_C48

SEG48_C49

SEG49_C50

SEG4_C5

SEG50_C51

SEG51_C52

SEG52_C53

SEG53_C54

SEG3_C4

SEG40_C41

SEG41_C42

SEG42_C43

SEG43_C44

SEG44_C45

SEG45_C46

SEG46_C47

SEG32_C33

SEG33_C34

SEG34_C35

SEG35_C36

SEG36_C37

SEG37_C38

SEG38_C39

SEG39_C40

SEG25_C26

SEG26_C27

SEG27_C28

SEG28_C29

SEG29_C30

SEG2_C3

SEG30_C31

SEG31_C32

SEG18_C19

SEG19_C20

SEG1_C2

SEG20_C21

SEG21_C22

SEG22_C23

SEG23_C24

SEG24_C25

SEG10_C11

SEG11_C12

SEG12_C13

SEG13_C14

SEG14_C15

SEG15_C16

SEG16_C17

SEG17_C18

COM3_R4

COM4_R5

COM5_R6

COM6_R7

COM7_NC

COMS

SEG0_C1

04B01

H0971

COM0_R1

COM1_R2

COM2_R3

VDD

VOUT

VSS

SEG858SEG9

SR115SR2

1V12V23V34

121

SEG72

122

SEG73

123

SEG74

124

SEG75

125

SEG76

126

SEG77

127

SEG78

128

SEG79

114

SEG65

115

SEG66

116

SEG67

117

SEG68

118

SEG69

SEG7

119

SEG70

120

SEG71

107

SEG58

108

SEG59

SEG6

109

SEG60

110

SEG61

111

SEG62

112

SEG63

113

SEG64

SEG50

100

SEG51

101

SEG52

102

SEG53

103

SEG54

104

SEG55

105

SEG56

106

SEG57

SEG4393SEG4494SEG4595SEG4696SEG4797SEG48

SEG49

SEG5

SEG3686SEG37

SEG3888SEG39

SEG4

SEG4090SEG4191SEG42

SEG29

SEG3

SEG3080SEG3181SEG3282SEG3383SEG3484SEG35

SEG2171SEG2272SEG2373SEG2474SEG2575SEG2676SEG2777SEG28

SEG1464SEG1565SEG1666SEG1767SEG1868SEG19

SEG2

SEG20

M_S

SEG050SEG1

SEG1060SEG1161SEG1262SEG13

25D126D227D328D429D530D631

COM639COM7

COM841COM9

COMS

CS119CS2

COM1245COM1346COM1447COM15

COM235COM336COM437COM5

CAP1_POS9CAP2_NEG

CAP2_POS

COM033COM1

COM1043COM11

SED1526F0A

U0971

CAP1_NEG

C0978

0.1uF

TP0974

TP0973

TP0975

TP0972

TP0971

2.2uF

C0983

200K

R0975

RESET

5VCH_KP_ID(0:7)

LED_CNTRL(0:8)

VOLTAGE_SENSE

Controlhead GM160/360/660 - Schematic Sheet 4 of 4

ZWG0130244-A

Page 67

Controlhead GM160/360/660 - PCB 8486155B06/8415672H03 / Schematics 4-13

3.1 Controlhead PCB 8486155B06 Parts List

* Motorola Depot Servicing only

Circuit

Ref

Motorola

Part No

Description

C0803 2113741F17 470pF 50V C0804 2113741F17 470pF 50V C0805 2113740F49 82pF 5% 50V NP0 C0807 2113741F17 470pF 50V C0811 2113741F17 470pF 50V C0812 2113741F17 470pF 50V C0813 2113741F17 470pF 50V C0815 2113741F17 470pF 50V C0816 2113741F17 470pF 50V C0817 2113740F49 82pF 5% 50V C0822 2311049A40 TANT CP 2.2uF 10% 10V C0823 2113741F49 10nF 50V C0831 2311049A42 TANT CP 3.3uF 10% 6V C0832 2113743E20 100nF 16V C0833 2113743E20 100nF 16V C0843 2311049A40 TANT CP 2.2uF 10% 10V C0931 2113743E20 100nF 16V C0933 2113743E20 100nF 16V C0971 2311049A07 TANT CP 1uF 10% 16V C0973 2311049A07 TANT CP 1uF 10% 16V C0974 2113743E20 100nF 16V C0975 2113743E20 100nF 16V C0976 2113743E20 100nF 16V C0978 2113743E20 100nF 16V C0980 2113743E20 100nF 16V C0983 2311049A09 TANT CP 2.2uF 10% 20V C0984 2113741F49 10nF 50V C0985 2311049A40 TANT CP 2.2uF 10% 10V D0821 4813833C02 DIODE DUAL SOT

MMBD6100

D0822 4813833C02 DIODE DUAL SOT

MMBD6100 D0831 4880236E05 DIODE CHIP SCHOTTKY D0877 4886171B01 LED RED D0879 4886171B04 LED GREEN D0880 4886171B03 LED YELLOW D0965 4886171B04 LED GREEN D0966 4886171B04 LED GREEN D0967 4886171B04 LED GREEN D0968 4886171B04 LED GREEN D0969 4886171B04 LED GREEN D0970 4886171B04 LED GREEN D0971 4886171B04 LED GREEN D0972 4886171B04 LED GREEN D0973 4886171B04 LED GREEN D0974 4886171B04 LED GREEN D0975 4886171B04 LED GREEN

D0976 4886171B04 LED GREEN D0977 4886171B04 LED GREEN D0978 4886171B04 LED GREEN D0979 4886171B04 LED GREEN D0980 4886171B04 LED GREEN D0981 4886171B04

Not used in

LED GREEN Controlhead B

D0982 4886171B04

Not used in

LED GREEN Controlhead B

D0983 4886171B04

Not used in

LED GREEN Controlhead B

D0984 4886171B04

Not used in

LED GREEN

Controlhead B D0985 4886171B04 LED GREEN D0986 4886171B04 LED GREEN D0987 4886171B04 LED GREEN D0988 4886171B04 LED GREEN J0801 0902636Y02 CONNECTOR FLEX 12 PIN J0811 2864287B01 CONN TELCO 10 PIN JACK P0801 2809926G01 CONN 1.25MM 2PIN SUR MT Q0821 4805921T02 TSTR DUAL ROHM FMC2 RH Q0822 4880048M01 TSTR NPN DIG 47k/47k Q0823 4805921T02 TSTR DUAL ROHM FMC2 RH Q0841 4880048M01 TSTR NPN DIG 47k/47k Q0843 4880048M01 TSTR NPN DIG 47k/47k Q0877 4813824A10 TSTR NPN 40V .2A B=50-150 Q0878 4813824A10 TSTR NPN 40V .2A B=50-150 Q0879 4813824A10 TSTR NPN 40V .2A B=50-150 Q0933 4813822A08 TSTR PNP 25V 5AMJD210T4 Q0934 4813824A10 TSTR NPN 40V .2A B=50-150 R0810 0662057A76 13k 1/16W 5% R0811 0662057A90 51k 1/16W 5% R0812 0662057A09 22 1/16W 5% R0813 0662057A01 10 1/16W 5% R0814 0662057A35 270 1/16W 5% R0815 0662057A76 13k 1/16W 5% R0816 0662057A90 51k 1/16W 5% R0817 0662057A09 22 1/16W 5% R0821 0662057A73 10k 1/16W 5% R0822 0662057A76 13k 1/16W 5% R0823 1805911V02 POT VOL R0824 0662057A65 4k7 1/16W 5% R0825 0662057A49 1k 1/16W 5% R0831 0662057B22 1M 1/16W 5% R0832 0662057A57 2k2 1/16W 5% R0833 0662057A89 47k 1/16W 5% R0834 0662057A35 270 1/16W 5% R0835 0662057A25 100 1/16W 5% R0836 0662057A73 10k 1/16W 5% R0837 0662057A85 33k 1/16W 5% R0838 0662057A73 10k 1/16W 5%

Circuit

Ref

Motorola

Part No

Description

R0841 0662057A73 10k 1/16W 5% R0842 0662057A89 47k 1/16W 5% R0843 0662057A57 2.2k 1/16W 5% R0844 0662057A73 10k 1/16W 5% R0845 0662057A65 4k7 1/16W 5% R0847 0662057A93 68k 1/16W 5% R0849 0662057A89 47k 1/16W 5% R0852 0662057A89 47k 1/16W 5% R0855 0662057A89 47k 1/16W 5% R0856 0662057A89 47k 1/16W 5% R0857 0662057A89

Not used in

47k 1/16W 5% Controlhead C

R0858 0662057A89

Not used in

47k 1/16W 5%

Controlhead B R0859 0662057A89 47k 1/16W 5% R0860 0662057A97 100k 1/16W R0861 0662057A97 100k 1/16W R0862 0662057A97 100k 1/16W R0863 0662057A65 4k7 1/16W 5% R0864 0662057A65 4k7 1/16W 5% R0865 0662057A65 4k7 1/16W 5% R0877 0660076A35 270 5 1/8 R0878 0660076A35 270 5 1/8 R0879 0660076A35 270 5 1/8 R0901 0662057A90 51k 1/16W 5% R0902 0662057A76 13k 1/16W 5% R0903 0662057A81 22k 1/16W 5% R0904 0662057A88 43k 1/16W 5% R0906 0662057A90 51k 1/16W 5% R0907 0662057A76 13k 1/16W 5% R0908 0662057A81 22k 1/16W 5% R0909 0662057A88

Not used in

43k 1/16W 5%

Controlhead B R0935 0662057A73 10k 1/16W 5% R0936 0662057A73 10k 1/16W 5% R0937 0660076A01 10 5 1/8 R0941 0662057A73 10k 1/16W 5% R0942 0662057A85 33k 1/16W 5% R0943 0662057A65 4k7 1/16W 5% R0944 0662057A97 100k 1/16W R0945 0662057A73 10k 1/16W 5% R0946 0662057A73 10k 1/16W 5% R0947 0660076A01 10 5 1/8 R0948 0660076A01 10 5 1/8 R0972 0662057B47 0 1/16W R0973 0662057B24 1.2M 1/16W 5% R0974 0662057B28 1.8M 1/16W 5% R0975 0662057G29 200k 0.1W 1% R0976 0662057G13 100k 0.1W 1% *U0831 5113802A24 IC 68HC11 W/SCI,SPI,A/D

Circuit

Ref

Motorola

Part No

Description

U0832 5113815A02 MC33064

UNDER VLTG SENSING

U0833 4886061B01 CER RESONATOR 8MHZ

CSTCC8.00MG U0834 5185963A15 TEMP SENSOR 1M5 U0931 5113818A03 IC HIGH PERFORMANCE SI U0971 5186158B01 LCD DRIVER SED1526F0A VR0812 4813830A15 DIODE 5.6V 5% 225mW VR0816 4805656W09 DIODE ZENER QUAD

MMQA20VT1 VR0817 4805656W09 DIODE ZENER QUAD

MMQA20VT1 VR0821 4813830A15 DIODE 5.6V 5% 225mW VR0822 4813830A15 DIODE 5.6V 5% 225mW

Circuit

Ref

Motorola

Part No

Description

Page 68

4-14 Controlhead GM160/360/660 - PCB 8486155B06/8415672H03 / Schematics

3.2 Controlhead PCB 8415672H03 Parts List

* Motorola Depot Servicing only

Circuit

Ref

Motorola

Part No

Description

C0803 2113945L17 CAP 470PF C0804 2113945L17 CAP 470PF C0805 2113944C43 CAP 82PF C0807 2113945L17 CAP 470PF C0811 2113945L17 CAP 470PF C0812 2113945L17 CAP 470PF C0813 2113945L17 CAP 470PF C0815 2113945L17 CAP 470PF C0816 2113945L17 CAP 470PF C0817 2113944C43 CAP 82PF C0822 2313960B28 CAP 2.2UF C0823 2113945L49 CAP 0.01UF C0831 2313960B54 CAP 3.3UF C0832 2113945C31 CAP 0.1UF C0833 2113945C31 CAP 0.1UF C0843 2313960B28 CAP 2.2UF C0931 2113945C31 CAP 0.1UF C0933 2113945C31 CAP 0.1UF C0971 2313960B01 CAP 1UF C0973 2313960B01 CAP 1UF C0974 2113945C31 CAP 0.1UF C0975 2113945C31 CAP 0.1UF C0976 2113945C31 CAP 0.1UF C0978 2113945C31 CAP 0.1UF C0980 2113945C31 CAP 0.1UF C0983 2313960C78 CAP 2.2UF C0984 2113945L49 CAP 0.01UF C0985 2313960B28 CAP 2.2UF D0821 4813978C02 DIODE DUAL 70V D0822 4813978C02 DIODE DUAL 70V D0831 4813974A05 DIODE MMBD301L D0877 4886171B01 LED RED WM D0879 4886171B04 LED GREEN WM D0880 4886171B03 LED YELLOW WM D0965 4886171B04 LED GREEN WM D0966 4886171B04 LED GREEN WM D0967 4886171B04 LED GREEN WM D0968 4886171B04 LED GREEN WM D0969 4886171B04 LED GREEN WM D0970 4886171B04 LED GREEN WM D0971 4886171B04 LED GREEN WM D0972 4886171B04 LED GREEN WM D0973 4886171B04 LED GREEN WM D0974 4886171B04 LED GREEN WM

D0975 4886171B04 LED GREEN WM D0976 4886171B04 LED GREEN WM D0977 4886171B04 LED GREEN WM D0978 4886171B04 LED GREEN WM D0979 4886171B04 LED GREEN WM D0980 4886171B04 LED GREEN WM D0985 4886171B04 LED GREEN WM D0986 4886171B04 LED GREEN WM D0987 4886171B04 LED GREEN WM D0988 4886171B04 LED GREEN WM J0801 0916162H02 12 POS FLEX CONNECTOR J0811 2864287B01 CONN 10 MODULAR JACK P0801 2815162H01 HEADER SMT HORZ MOUNT Q0821 4816097H01 XSTR FMC2 RH Q0822 4813973A42 XSTR NPN SC-59 Q0823 4816097H01 XSTR FMC2 RH Q0841 4813973A42 XSTR NPN SC-59 Q0843 4813973A42 XSTR NPN SC-59 Q0877 4813973M07 XSTR NPN TO-236 Q0878 4813973M07 XSTR NPN TO-236 Q0879 4813973M07 XSTR NPN TO-236 Q0933 4813971A08 XSTR PNP MJD210T4 Q0934 4813973M07 XSTR NPN TO-236 R0810 0613952J04 RES 13K OHM R0811 0613952J18 RES 51K OHM R0812 0613952H33 RES 22.0 OHM R0813 0613952H25 RES 10.0 OHM R0814 0613952H59 RES 270 OHM R0815 0613952J04 RES 13K OHM R0816 0613952J18 RES 51K OHM R0817 0613952H33 RES 22.0 OHM R0821 0613952J01 RES 10K OHM R0822 0613952J04 RES 13K OHM R0823 1866500A01 POTENTIOMETER R0824 0613952H89 RES 4700 OHM R0825 0613952H73 RES 1000 OHM R0831 0613952J49 RES 1M OHM R0832 0613952H81 RES 2200 OHM R0833 0613952J17 RES 47K OHM R0834 0613952H59 RES 270 OHM R0835 0613952H49 RES 100 OHM R0836 0613952J01 RES 10K OHM R0837 0613952J13 RES 33K OHM R0838 0613952J01 RES 10K OHM R0841 0613952J01 RES 10K OHM R0842 0613952J17 RES 47K OHM R0843 0613952H81 RES 2200 OHM R0844 0613952J01 RES 10K OHM

Circuit

Ref

Motorola

Part No

Description

R0845 0613952H89 RES 4700 OHM R0847 0613952J21 RES 68K OHM R0849 0613952J17 RES 47K OHM R0852 0613952J17 RES 47K OHM R0855 0613952J17 RES 47K OHM R0856 0613952J17 RES 47K OHM R0857 0613952J17 RES 47K OHM R0859 0613952J17 RES 47K OHM R0860 0613952J25 RES 100K OHM R0861 0613952J25 RES 100K OHM R0862 0613952J25 RES 100K OHM R0863 0613952H89 RES 4700 OHM R0864 0613952H89 RES 4700 OHM R0865 0613952H89 RES 4700 OHM R0877 0613958H59 RES 270 OHM R0878 0613958H59 RES 270 OHM R0879 0613958H59 RES 270 OHM R0901 0613952J18 RES 51K OHM R0902 0613952J04 RES 13K OHM R0903 0613952J09 RES 22K OHM R0904 0613952J16 RES 43K OHM R0906 0613952J18 RES 51K OHM R0907 0613952J04 RES 13K OHM R0908 0613952J09 RES 22K OHM R0935 0613952J01 RES 10K OHM R0936 0613952J01 RES 10K OHM R0937 0613958H25 RES 10.0 OHM R0941 0613952J01 RES 10K OHM R0942 0613952J13 RES 33K OHM R0943 0613952H89 RES 4700 OHM R0944 0613952J25 RES 100K OHM R0945 0613952J01 RES 10K OHM R0946 0613952J01 RES 10K OHM R0947 0613958H25 RES 10.0 OHM R0948 0613958H25 RES 10.0 OHM R0972 0613952G67 RES 0 OHM R0973 0613952J51 RES 1.2M OHM R0974 0613952J55 RES 1.8M OHM R0975 0613958F30 RES 200K OHM R0976 0613958F01 RES 100K OHM U0831 5116526H01 8 BIT MICRO CONTROLLER U0832 5114004A02 IC MC33064 U0833 4886061B01 CER RESO 8.00MHZ U0834 5115022H01 IC TEMP SENSOR U0931 5114005A19 ICOP AMP SO-8 U0971 5116154H01 IC LCD CTRL SED1526 VR0812 4813977M11 DIODE MBZ5232 VR0816 4813979C11 DIODE SOT-26/SC-74

Circuit

Ref

Motorola

Part No

Description

VR0817 4813979C11 DIODE SOT-26/SC-74 VR0821 4813977M11 DIODE MBZ5232 VR0822 4813977M11 DIODE MBZ5232

Circuit

Ref

Motorola

Part No

Description

Page 69

Controlhead GM380/1280 - PCB 8486178B03/B04/8471237L01 / Schematics 4-15

4.0 Controlhead GM380/1280 - PCB 8486178B03/B04/8471237L01 / Schematics

D0941

D0942

D0943

D0944

D0945

D0946

D0947

D0948

D0949

D0950

D0951

D0952

D0953

D0954

D0955

D0956

D0957

D0958

D0959

D0960

D0961

D0962

D0963

D0964

D0965

D0966

D0967

D0968

D0969

D0970

D0971

D0972

D0973

D0974

D0975

D0976

D0977

D0978

D0979

D0980

D0981

D0982

D0983

D0984

D0985

D0986

D0987

D0988

D0989

D0990

D0991

D0992

D0993

3579

864

J0811

R0854

S0901

S0902

S0903

S0904

S0905

S0906

S0907

S0908 S0909 S0910

S0911

S0912

S0913

S0914

S0915

S0916

S0917

S0918

S0919

S0920

S0921

S0922

S0923

S0924

S0925

S0931

S0932 S0933

S0934

S0935

C0802 C0803 C0804 C0805

C0806 C0807

C0808

C0810

C0811

C0812

C0813

C0815

C0816

C0817

C0818

C0819

C0823

C0824

C0825

C0826

C0827

C0828

C0829

C0830

C0831

C0832

C0833

C0834

C0835

C0836

C0837

C0838

C0840

C0851

C0853

C0855

C0856

C0861

C0862

C0863

C0864

C0865

C0866

C0870

C0871

C0872

C0873

C0874

C0875

C0941

C0942

C0943

C0944

C0945

C0946

C0963

C0964

C0965

C0966

C0991

C0994

C0998

C0999

D0852

D0855

D0861

D0871

D0872

J0801

J0821

to LCD - Module

P0801

Q0851

Q0852

Q0853

Q0866

Q0871

Q0872

234

Q0941

234

Q0942

Q0943

Q0944

234

Q0961

234

Q0962

Q0963

Q0964

Q0991

Q0992

Q0993

R0811

R0812

R0813

R0814

R0815

R0816

R0817

R0818

R0821

R0822

R0823

R0824

R0825

R0826

R0827

R0828

R0831

R0832

R0833

R0834

R0835

R0836

R0837

R0838

R0840

R0852

R0853

R0855

R0856

R0861

R0862

R0863

R0866

R0870

R0871

R0872

R0873

R0874

R0875

R0876

R0877

R0878

R0879

R0880

R0881

R0882

R0883

R0884

R0885

R0886

R0887

R0888

R0889

R0890

R0901

R0902

R0903

R0904

R0905

R0911

R0912

R0913

R0914

R0915

R0931

R0932

R0933

R0934

R0935

R0941

R0942

R0943

R0944

R0945

R0946

R0947

R0948

R0949

R0950

R0951

R0952

R0953

R0954

R0955

R0956

R0957

R0958

R0961

R0962

R0963

R0964

R0965

R0966

R0967

R0968

R0969

R0970

R0971

R0972

R0973

R0974

R0975

R0976

R0977

R0978

R0991

R0992

R0993

R0994

R0995

R0996

R0997

R0998

R0999

SH0871

SH0872

TP0804

TP0821

TP0866

TP0871

TP0872

TP0873

TP0874

TP0875

TP0876

TP0877

TP0878

U0861

U0871

HC11K4

µP

U0872 FLASH

U0873

U0874

U0875 SRAM

U0941

U0942

VR0811

VR0812

VR0813

VR0814

VR0851

VR0855

Controlhead GM380/1280 - PCB 8486178B03/B04/

8471237L01

ZWG0130368-B Top Side

ZWG0130369-C Bottom Side

Page 70

4-16 Controlhead GM380/1280 - PCB 8486178B03/B04/8471237L01 / Schematics

INOUT

CONTROLLER

R0871

BOOT_MODE

BOOT_VPP

ARCHITECTURE

OUT

CLOSED

BOOT_SCI_RX

* see note 1

Note 1: Volume Pot is part of Hardware Kit

BOOT_SCI_TX

BOOT_PWR

OUT

RESET

BOOT_PWR_ON

BOOT_GND

R0872

R0876

R0877

R0878

R0879

OPEN

OUT

SHIELD

SH0872

SHIELD

IO6

IO7

IO8

VCC

6 7

SH0871

EN_OE

EN_WE

GND

IO1

IO2

IO3

IO4

IO5

EN_CS

A10

A11

A12

A13

A14

U0875 63A21 NU

D0872

D0871

.01uF

1 2 3 4

8 9

C0870

TP0876

TP0871

TP0878

TP0872

GND

U0873

CSTCC8.00MG

R0886

47K

R0870

2.2K

D0861

33K

R0889

10K

R0888

10K

R0887

C0856

4 5

1 2

2.2uF

0.1uF

C0875

R0871

4.7K NU

C0872

0.1uF

6 7

3 4

C0861

0.1uF

10uF

C0862

R0866

10K

0.1uF

C0874

0.1uF

VCC

12 13

C0865

IO0

IO1

IO2

IO3

IO4

IO5

IO6

IO7

EN_CE

EN_OE

EN_WE

GND

A15

A16

A17

A18

A10

A11

A12

A13

A14

U0872 AT49F040

.01uF

C0851

VR0851

5.6V

VRL

VSS13VSS132VSS3

XIRQ

XTAL

PH5_CSGP127PH6_CSGP2

PH7_CSPROG

RESET

VDD

VDD131VDD2

VRH

PG5_XA18

PG6

PG7_R_W*

PH0_PW122PH1_PW223PH2_PW324PH3_PW4

PH4_CSIO

PF6_ADDR6

PF7_ADDR7

PFO_ADDR0

PG0_XA13

PG1_XA14

PG2_XA15

PG3_XA16

PG4_XA17

PE5_AN5

PE6_AN6

PE7_AN7

PF1_ADDR1

PF2_ADDR2

PF3_ADDR3

PF4_ADDR4

PF5_ADDR5

PD3_MOSI1PD4_SCK2PD5_SS*

PE0_AN0

PE1_AN1

PE2_AN2

PE3_AN3

PE4_AN4

PC3_DATA3

PC4_DATA4

PC5_DATA5

PC6_DATA6

PC7_DATA7

PD0_RXD78PD1_TXD79PD2_MISO

PB4_ADDR12

PB5_ADDR13

PB6_ADDR14

PB7_ADDR15

PBO_ADDR8

PC0_DATA0

PC1_DATA1

PC2_DATA2

PA3_IC4_OC5_OC1

PA4_OC4_OC17PA5_OC3_OC16PA6_OC2_OC1

PA7_PA1_OC1

PB1_ADDR9

PB2_ADDR10

PB3_ADDR11

EXTAL

IRQ

MODA_LIR*

MODB_VSTBY

PA0_IC311PA1_IC210PA2_IC1

MC68HC11K4

U0871

AVDD

AVSS

R0879

50K

NEG

POS

TAB

TAB1

VAR

R0854

R0856

4.7K

R0862

R0861

FEEDBACK

GND

INPUT1OUTPUT

SENSE

SHUTDOWN

LP2951C

U0861

5V_TAP

ERROR

HOLD

VCC

VSS

X25320_2.7V

U0874

CLK

Q0872

100K

R0863

0 NU

R0877

5.6V

VR0855

14 15 16 17 18

R0875

47K

13K

R0855

R0876

R0878

C0863

.022uF

4 5

0 1 2

270

R0890

47uF

C0864

Q0852

1 2

100

R0874

10K

R0881

Q0871

Q0853

R0852

R0884 10K

C0866

0.1uF

TP0877

TP0873

10K

7 8

R0885

C0855

470pF NU

R0872 0

R0880

2.2K

1MEG

R0873

TP0866

C0873

0.1uF

C0871

3.3uF

R0853 10K

TP0874

9 10 11

.01uF

C0853

R0882

10 11 12 13

47K

D0855

4 5 6

10K

R0883

7 8

Q0866

TP0875

D0852

Q0851

CH_REQUEST

SCI_TX

BUS+

LCD_RW_WR

LCD_DATA_(0:7)

RESET

FLT_A+

ON_OFF_CONTROL

PTT_IRDEC

VOLTAGE_SENSE

USW_5V

KEYPAD_ID

BL_LCD_RED BL_KP_RED BL_LCD_GREEN BL_KP_GREEN

LCD_CS

LCD_A0

LED_RED

LED_YELLOW

LED_GREEN

LCD_E_RD

RESET

FLT_A+

5V_SOURCE

INT_KP_COL INT_KP_ROW EXT_KP_COL EXT_KP_ROW

VOLUME

TEMP_SENSE

PTT_IRDEC

ADDR(0:18)

FLT_A+

CH_REQUEST

FLT_A+

USW_5V

VOLUME

HOOK

ON_OFF_SENSE

ZWG0130370-C

Controlhead GM380/1280 - Schematic Sheet 1 of 4

Page 71

Controlhead GM380/1280 - PCB 8486178B03/B04/8471237L01 / Schematics 4-17

SW0924P7SW0925

DOWN

SW09032SW0904

SW0910

SW09138SW0914

SW0901 SW0906

1V/1V

1V/2V

1V/3V

3V/2V

3V/3V

SW0917

SW0911

SW0912

KEYPAD D

0V/0V

3V/4V

2V/0V

SW09180SW0919

1V/4V

3V/0V

RIGHT

LEFT

SW09085SW0909

2V/1V

2V/2V

4V/0V

4V/1V

4V/2V

4V/3V

4V/4V

789

SW0905

P3 P4

EXIT

SW0915

SW0902 SW0907

SW0916 SW0921

SW0922

2V/3V

2V/4V

0V/1V

0V/2V

0V/3V

0V/4V

1V/0V

P5 P6 P7

3V/1V

SW0920

SW0923

4P45P56P67P78

SWITCH

S0924

1P12P23

S0933

SWITCH

130K

R0915

130K

R0935

P66P77P8

S0917 SWITCH

P11P22P33P44P5

P56P67P78P8

SWITCH

S0907

1P12P23P34

P33P44P55P66P77P8

S0903 SWITCH

P11P2

2P23P34P45P56P67P78

SWITCH

S0911

1P12P23P34P45P56P67

P77P8

SWITCH

S0904

P11P22P33P44P55P6

S0905 SWITCH

R0933

22K

R0914

43K

SWITCH

S0932

R0934

43K

R0931

51K

R0903R0902

22K13K

R0912 13K

R0932

13K

S0931 SWITCH

2P23P34P45P56P67P78

SWITCH

S0912

43K

R0904 R0905

130K

R0911 51K

51K

R0901

R0913

22K

P22P33P44P55P66P77P8

S0910 SWITCH

P12P23P34P45P56P67P7P7

7P88

SWITCH

S0915

P11P22P33P44P55P6

5P56P67P78

S0920 SWITCH

S0925

1P12P23P34

SWITCH

1P12P23P34P45

P44P55P66P77P8

S0916

S0906 SWITCH

P11P22P3

3P34P45P56P67P78

SWITCH

S0923

1P12

P11P22P33P44P55P66P77P8

S0909 SWITCH

1P12P23P34P45P56P67

P66P77P8

SWITCH

S0914

S0919 SWITCH

P11P22P33P44P5

SWITCH

S0935

SWITCH

6P67P78

S0934

1P12P23P34P45

P44P55P66P77P8

SWITCH

S0922S0921

SWITCH

P11P22P3

P33P44P55P66P77P8

S0901 SWITCH

P11P2

1P12P23P34P45P56P67P78

SWITCH

S0902

P56P67P78P81P12P23P34P4

4P45P56P67P78

SWITCH

S0908

SWITCH

S0913

1P12P23

2P33P44P55P66P77P88

S0918 SWITCH

P11P2

INT_KP_ROW

INT_KP_COL

5V 5V

KEYPAD_ID

Controlhead GM380/1280 - Schematic Sheet 2 of 4

ZWG0130371-A

Page 72

4-18 Controlhead GM380/1280 - PCB 8486178B03/B04/8471237L01 / Schematics

0.1uF

C0966

Q0992

10K

R0962

yellow

D0992

red

D0991

D0956

D0987

D0955

D0967

R0946

68K

C0999

C0998

2.2uF

C0994

2.2uF

10K

2.2uF

10K

R0999

10K

R0998

0.1uF

R0994

C0941

D0969

D0957

D0945

D0979

D0972

2.2uF

C0963

68K

R0966

10K

R0953

10K

R0951

D0983

green

D0993

R0955

0.1uF

C0945

R0954

10K

3.3K

R0943

10K

R0941

Q0943

D0961

D0949

D0980

10K

R0973

10K

R0971

33K

R0964

D0982

D0968

270

R0991

270

R0992

R0958

D0978

D0966

R0968

4.7K NU

R0970

100K

R0978 10

R0976

D0960

D0948

R0957

D0944

D0954

D0942

D0989

100K

R0949

D0947

2.2uF

C0944

R0993 270

Q0993

100K

R0997

100K

R0996

R0995

100K

D0976

D0964

2.2uF NU

C0964

Q0964

10K NU

33K NU

R0952

R0944

R0942

10K

Q0944

MC33072

U0942-1

Q0942

R0977R0975

C0965

0.1uF

D0958

D0946

D0970

470pF

C0991

0.1uF NU

C0942

D0975

D0963

D0951

D0985

D0973

R0956

0.1uF NU

C0946

D0990D0988

D0943

D0952

D0986

D0981

68K

R0945

C0943

2.2uF

D0974

D0962

D0950

D0984

R0974

10K

R0972

3.3K

R0963

R0961

10K

Q0963

MC33072

U0941-2

Q0961

U0941-1 MC33072

Q0941

U0942-2 MC33072

Q0962

4.7K

R0967

100K

R0969

Q0991

R0965

68K

D0971

D0959

D0977

D0965

D0953

D0941

4.7K

R0947

4.7K

R0948

100K

BL_KP_GREEN

BL_KP_RED

BL_LCD_GREEN

BL_LCD_RED

FLT_A+

LED_RED

LED_YELLOW

LED_GREEN

FLT_A+

R0950

BL_A_GREENFLT_A+

BL_K_GREEN

BL_A_REDFLT_A+

BL_K_RED

FLT_A+

ZWG0130372-C

Controlhead GM380/1280 - Schematic Sheet 3 of 4

ZWG0130372-C

Page 73

Controlhead GM380/1280 - PCB 8486178B03/B04/8471237L01 / Schematics 4-19

J0821-10 E (RD)

C0806 470pF470pF

C0807

100pF NU

C0824

470pF

C0816

R0815

100pF

C0827

C0826 100pF NU

C0815 470pF

C0813

C0811

470pF

R0816

270

R0817

13K

R0812

13K

ANALOG_INPUT_2 J0811-10

470pF

C0812

R0814

100pF

C0836

82pF

C0808

R0813

J0821-3 Backlight_Anode Red

J0821-4 Temp_Sense

J0821-2 Backlight_Anode Green

82pF

C0805

NC NC

R0833

100

R0832

100

J0821-21 Voltage_Sense

J0821-20 GND

J0801-6

J0801-5

J0801-7

J0821-24 GND

R0823

51K

R0811

HANDSET_AUDIO J0811-8

PTT_IRDECODER J0811-6

BUS+ J0811-7

J0821-13 D1

J0821-12 D0

R0822

C0804 470pF

NUNU

C0835

100pF100pF

C0834C0833

100pF

C0832

J0801-8

100pF

NUNU

C0840

100pF100pF

C0838C0837

100pF

J0821-26 GND

HOOK J0811-3

GROUND J0811-4

5V J0811-2

FLT_A+ J0811-1

TP0821

Voltage_Sense

J0821-15 D3

VR0811 33V NU

ANALOG_INPUT_3 J0811-9

100pF

C0823

VR0814

20V

100

VR0813

R0838

100pF

C0825

J0801-14

J0801-2

J0801-1

J0801-3

J0821-25 GND

R0824

J0821-14 D2

J0821-23 Backlight_Cathode Green

J0821-1 GND

J0821-9 R/W (WR)

J0821-7 CS2

J0821-8 A0 (Command)

J0821-6 CS1

C0831 100pF

470pF

C0810

470pF

C0819

470pF

C0818

C0830

100pF

J0821-22 Backlight_Cathode Red

J0801-9

J0821-11 VDD

J0801-12

P0801-1 NU P0801-2

J0801-13

J0821-19 D7

470pF

C0802

C0803

470pF

R0835

100

82pF

C0817

51K

R0818

100

J0821-18 D6

R0827

J0821-17 D5

C0829

100pF NU

100pF

C0828

R0840

100

MIC J0811-5

R0837

100

R0836

100

R0834

100

R0831

R0828

100

J0801-4

R0826

100

R0825

100

J0821-16 D4

R0821

J0821-5 Reset

VR0812

5.6V

J0801-10

EXT_KP_ROW

MIC

FLT_A+

EXT_KP_COL

HOOK

J0801-11

LCD_CS

RESET

LCD_DATA_(0:7)

VOLTAGE_SENSE

TEMP_SENSE

BL_A_GREEN

BL_A_RED

BL_K_GREEN

BL_K_RED

LCD_A0

LCD_RW_WR

LCD_E_RD

PTT_IRDEC

HANDSET_AUDIO

BUS+

SCI_TX

5V_SOURCE

HANDSET_AUDIO

BUS+

MIC

FLT_A+

ON_OFF_CONTROL

J0801

CONTROL HEAD

CONNECTOR

J0821 LCD MODULE CONNECTOR

TP0804

Temp_Sense

GM300

789

MICROPHONE CONNECTOR

J0811

WARIS

145623

Shown from Front Side

Controlhead GM380/1280 - Schematic Sheet 4 of 4

ZWG0130373-B

Page 74

4-20 Controlhead GM380/1280 - PCB 8486178B03/B04/8471237L01 / Schematics

4.1 Controlhead PCB 8486178B03/B04 Parts List

* Motorola Depot Servicing only

Circuit

Ref

Motorola

Part No

Description

C0803 2113741F17 470pF 50V C0804 2113741F17 470pF 50V C0805 2113740F49 82pF 5% 50V C0807 2113741F17 470pF 50V C0811 2113741F17 470pF 50V C0812 2113741F17 470pF 50V C0813 2113741F17 470pF 50V C0815 2113741F17 470pF 50V C0816 2113741F17 470pF 50V C0817 2113740F49 82pF 5% 50V C0851 2113741F49 10nF 50V C0856 2311049A40 TANT CP 2.2uF 10% 10V C0861 2113743E20 100nF 16V C0862 2311049A45 TANT CP 10uF 10% 35V C0863 2113743E07 22nF 16V C0864 2311049A99 TANT CP 47uF 20% 10V C0865 2113743E20 100nF 16V C0866 2113743E20 100nF 16V C0870 2113741F49 10nF 50V C0871 2311049A42 TANT CP 3.3uF 10% 6V C0873 2113743E20 100nF 16V C0941 2113743E20 100nF 16V C0943 2311049A40 TANT CP 2.2uF 10% 10V

C0944 2311049A40 TANT CP 2.2uF 10% 10V

C0945 2113743E20 100nF 16V

C0946 2113743E20 100nF 16V

C0963 2311049A40 TANT CP 2.2uF 10% 10V

C0964 2311049A40 TANT CP 2.2uF 10% 10V

C0965 2113743E20 100nF 16V

C0966 2113743E20 100nF 16V

C0994 2311049A40 TANT CP 2.2uF 10% 10V C0998 2311049A40 TANT CP 2.2uF 10% 10V C0999 2311049A40 TANT CP 2.2uF 10% 10V D0852 4813833C02 DUAL SOT MMBD6100 D0855 4813833C02 DUAL SOT MMBD6100 D0861 4813833C02 DUAL SOT MMBD6100 D0871 4813833C02 DUAL SOT MMBD6100 D0872 4880236E05 DIODECHIP SCHOTTKY D0941 4886171B04 LED GREEN

D0942 4886171B01 LED RED

D0943 4886171B04 LED GREEN

D0944 4886171B01 LED RED

D0945 4886171B04 LED GREEN D0947 4886171B04 LED GREEN D0949 4886171B04 LED GREEN D0951 4886171B04 LED GREEN D0953 4886171B04 LED GREEN

D0955 4886171B04 LED GREEN D0957 4886171B04 LED GREEN D0959 4886171B04 LED GREEN D0961 4886171B04 LED GREEN D0963 4886171B04 LED GREEN D0965 4886171B04 LED GREEN D0967 4886171B04 LED GREEN D0969 4886171B04 LED GREEN D0971 4886171B04 LED GREEN D0973 4886171B04 LED GREEN D0975 4886171B04 LED GREEN D0977 4886171B04 LED GREEN D0979 4886171B04 LED GREEN D0981 4886171B04 LED GREEN D0983 4886171B04 LED GREEN D0985 4886171B04 LED GREEN D0987 4886171B04 LED GREEN D0989 4886171B04 LED GREEN D0991 4886171B01 LED RE D D0992 4886171B03 LED YELLOW D0993 4886171B04 LED GREEN J0801 0902636Y02 CONN FLEX 12 PIN J0811 2864287B01 CONN TELCO 10 PIN JACK J0821 0986197B01 CONN ZIF HOR 24PIN Q0851 4805921T02 DUAL ROHM FMC2 RH Q0852 4805921T02 DUAL ROHM FMC2 RH Q0853 4880048M01 NPN DIG 47k/47k Q0866 4880048M01 NPN DIG 47k/47k Q0871 4880048M01 NPN DIG 47k/47k Q0872 4880048M01 NPN DIG 47k/47k Q0941 4813822A08 PNP 25V 5A MJD210T4 Q0943 4813824A10 NPN 40V .2A B=50-150 Q0961 4813822A08 PNP 25V 5A MJD210T4 Q0963 4813824A10 NPN 40V .2A B=50-150 Q0991 4813824A10 NPN 40V .2A B=50-150 Q0992 4813824A10 NPN 40V .2A B=50-150 Q0993 4813824A10 NPN 40V .2A B=50-150 R0811 0662057A90 51k 1/16W 5% R0812 0662057A76 13k 1/ 16W 5% R0813 0662057A09 22 1/16W 5% R0814 0662057A09 22 1/16W 5% R0815 0662057A01 10 1/16W 5% R0816 0662057A35 270 1/16W 5% R0817 0662057A76 13k 1/16W 5% R0818 0662057A90 51k 1/ 16W 5% R0821 0662057B47 0 1/16W R0823 0662057B47 0 1/16 W R0825 0662057A25 100 1/16W 5% R0826 0662057A25 100 1/16W 5% R0827 0662057A25 100 1/16W 5% R0828 0662057A25 100 1/16W 5%

Circuit

Ref

Motorola

Part No

Description

R0831 0662057A25 100 1/16W 5% R0832 0662057A25 100 1/16W 5% R0833 0662057A25 100 1/16W 5% R0834 0662057A25 100 1/16W 5% R0835 0662057A25 100 1/16W 5% R0836 0662057A25 100 1/16W 5% R0837 0662057A25 100 1/16W 5% R0838 0662057A25 100 1/16W 5% R0840 0662057A25 100 1/16W 5% R0852 0662057A49 1k 1/16W 5% R0853 0662057A73 10k 1/16W 5% R0854 1805911V02 POT VOL

(Part of Hardware Kit) R0855 0662057A76 13K 1/16W 5% R0856 0662057A65 4k7 1/16W 5% R0861 0662057A01 10 1/16W 5% R0862 0662057A01 10 1/16W 5% R0863 0662057A97 100k 1/16W R0866 0662057A73 10k 1/16W 5% R0870 0662057A73 10k 1/16W 5% R0872 0662057B47 0 1/16W R0873 0662057B22 1M 1/16W 5% R0874 0662057A25 100 1/16W 5% R0875 0662057A89 47k 1/16W 5% R0876 0662057B47 0 1/16W R0878 0662057B47 0 1/16W R0880 0662057A57 2k2 1/16W 5% R0881 0662057A73 10k 1/16W 5% R0882 0662057A89 47k 1/16W 5% R0883 0662057A73 10k 1/16W 5% R0884 0662057A73 10k 1/16W 5% R0885 0662057A73 10k 1/16W 5% R0886 0662057A89 47k 1/16W 5% R0887 0662057A73 10k 1/16W 5% R0888 0662057A73 10k 1/16W 5% R0889 0662057A85 33k 1/16W 5% R0890 0662057A35 270 1/16W 5% R0901 0662057A90 51k 1/16W 5% R0902 0662057A76 13k 1/16W 5% R0903 0662057A81 22k 1/16W 5% R0904 0662057A88 43k 1/16W 5% R0905 0662057B01 130K 1/16W 5% R0911 0662057A90 51k 1/16W 5% R0912 0662057A76 13k 1/16W 5% R0913 0662057A81 22k 1/16W 5% R0914 0662057A88 43k 1/16W 5% R0915 0662057B01 130K 1/16W 5% R0931 0662057A90 51k 1/16W 5% R0932 0662057A76 13k 1/16W 5% R0933 0662057A81 22k 1/16W 5% R0941 0662057A73 10k 1/16W 5%

Circuit

Ref

Motorola

Part No

Description

R0943 0662057A61 3.3k 1/16W 5% R0945 0662057A93 68k 1/16W 5% R0947 0662057A65 4k7 1/16W 5% R0949 0662057A97 100k 1/16W R0951 0662057A73 10k 1/16W 5% R0953 0662057A73 10k 1/16W 5% R0955 0660076A01 10 5 1/8 R0957 0660076A01 10 5 1/8 R0961 0662057A73 10k 1/16W 5% R0963 0662057A61 3.3k 1/16W 5% R0965 0662057A93 68k 1/16W 5% R0967 0662057A65 4k7 1/16W 5% R0969 0662057A97 100k 1/16W R0971 0662057A73 10k 1/16W 5% R0973 0662057A73 10k 1/16W 5% R0975 0660076A01 10 5 1/8 R0977 0660076A01 10 5 1/8 R0991 0660076A35 270 5 1/8 R0992 0660076A35 270 5 1/8 R0993 0660076A35 270 5 1/8 R0994 0662057A73 10k 1/16W 5% R0995 0662057A97 100k 1/16W R0996 0662057A97 100k 1/16W R0997 0662057A97 100k 1/16W R0998 0662057A73 10k 1/16W 5% R0999 0662057A73 10k 1/16W 5% U0861 5105469E65 IC VLTG REGLTR LP2951C *U0871 5113802A32 68HC11 W/SCI SPI A/D U0873 4886061B01 CER RESONATOR 8MHZ U0941 5113818A03 IC HIGH PERFORMANCE SI

VR0812

4813830A15 DIODE 5.6V 5% 225mW

VR0813

4805656W09 ZENER QUAD MMQA20VT1

VR0814

4805656W09 ZENER QUAD MMQA20VT1

VR0851

4813830A15 DIODE 5.6V 5% 225m W

VR0855

4813830A15 DIODE 5.6V 5% 225mW

Circuit

Ref

Motorola

Part No

Description

Page 75

Controlhead GM380/1280 - PCB 8486178B03/B04/8471237L01 / Schematics 4-21

4.2 Controlhead PCB 8471237L01 Parts List

Circuit

Ref

Motorola

Part No

Description

C0803 2113945L17 CAP 470PF C0804 2113945L17 CAP 470PF C0805 2113944C43 CAP 82PF C0807 2113945L17 CAP 470PF C0811 2113945L17 CAP 470PF C0812 2113945L17 CAP 470PF C0813 2113945L17 CAP 470PF C0815 2113945L17 CAP 470PF C0816 2113945L17 CAP 470PF C0817 2113944C43 CAP 82PF C0851 2113945L49 CAP 0.01UF C0856 2313960B28 CAP 2.2UF C0861 2113945C31 CAP 0.1UF C0862 2313960G32 CAP 10UF C0863 2113945C04 CAP 22000PF C0864 2313960F30 CAP 47PF C0865 2113945C31 CAP 0.1UF C0866 2113945C31 CAP 0.1UF C0870 2113945L49 CAP 0.01UF C0871 2313960B54 CAP 3.3UF C0873 2113945C31 CAP 0.1UF C0941 2113945C31 CAP 0.1UF C0943 2313960B28 CAP 2.2UF C0945 2113945C31 CAP 0.1UF C0963 2313960B28 CAP 2.2UF C0965 2113945C31 CAP 0.1UF C0994 2313960B28 CAP 2.2UF C0998 2313960B28 CAP 2.2UF C0999 2313960B28 CAP 2.2UF D0852 4813978C02 DIODE DUAL 70V D0855 4813978C02 DIODE DUAL 70V D0861 4813978C02 DIODE DUAL 70V D0871 4813978C02 DIODE DUAL 70V D0872 4813974A05 DIODE MMBD301L D0941 4886171B04 LED GREEN WM D0942 4886171B01 LED RED WM D0943 4886171B04 LED GREEN WM D0944 4886171B01 LED RED WM D0945 4886171B04 LED GREEN WM D0946 4886171B01 LED RED WM D0947 4886171B04 LED GREEN WM D0948 4886171B01 LED RED WM D0949 4886171B04 LED GREEN WM

D0950 4886171B01 LED RED WM D0951 4886171B04 LED GREEN WM D0952 4886171B01 LED RED WM D0953 4886171B04 LED GREEN WM D0954 4886171B01 LED RED WM D0955 4886171B04 LED GREEN WM D0956 4886171B01 LED RED WM D0957 4886171B04 LED GREEN WM D0958 4886171B01 LED RED WM D0959 4886171B04 LED GREEN WM D0960 4886171B01 LED RED WM D0961 4886171B04 LED GREEN WM D0962 4886171B01 LED RED WM D0963 4886171B04 LED GREEN WM D0964 4886171B01 LED RED WM D0965 4886171B04 LED GREEN WM D0966 4886171B01 LED RED WM D0967 4886171B04 LED GREEN WM D0968 4886171B01 LED RED WM D0969 4886171B04 LED GREEN WM D0970 4886171B01 LED RED WM D0971 4886171B04 LED GREEN WM D0972 4886171B01 LED RED WM D0973 4886171B04 LED GREEN WM D0974 4886171B01 LED RED WM D0975 4886171B04 LED GREEN WM D0976 4886171B01 LED RED WM D0977 4886171B04 LED GREEN WM D0978 4886171B01 LED RED WM D0979 4886171B04 LED GREEN WM D0980 4886171B01 LED RED WM D0981 4886171B04 LED GREEN WM D0982 4886171B01 LED RED WM D0983 4886171B04 LED GREEN WM D0984 4886171B01 LED RED WM D0985 4886171B04 LED GREEN WM D0986 4886171B01 LED RED WM D0987 4886171B04 LED GREEN WM D0988 4886171B01 LED RED WM D0989 4886171B04 LED GREEN WM D0990 4886171B01 LED RED WM D0991 4886171B01 LED RED WM D0992 4886171B03 LED YELLOW WM D0993 4886171B04 LED GREEN WM J0801 0916162H02 12 POS FLEX CONNECTOR J0811 2864287B01 CONN 10 MODULAR JACK

Circuit

Ref

Motorola

Part No

Description

J0821 0986197B02 CONN ZIF HOR 24 Q0851 4816097H01 XSTR FMC2 RH Q0852 4816097H01 XSTR FMC2 RH Q0853 4813973A42 XSTR NPN SC-59 Q0866 4813973A42 XSTR NPN SC-59 Q0871 4813973A42 XSTR NPN SC-59 Q0872 4813973A42 XSTR NPN SC-59 Q0941 4813971A08 XSTR PNP MJD210T4 Q0943 4813973M07 XSTR NPN TO-236 Q0961 4813971A08 XSTR PNP MJD210T4 Q0963 4813973M07 XSTR NPN TO-236 Q0991 4813973M07 XSTR NPN TO-236 Q0992 4813973M07 XSTR NPN TO-236 Q0993 4813973M07 XSTR NPN TO-236 R0811 0613952J18 RES 51K OHM R0812 0613952J04 RES 13K OHM R0813 0613952H33 RES 22.0 OHM R0814 0613952H33 RES 22.0 OHM R0815 0613952H25 RES 10.0 OHM R0816 0613952H59 RES 270 OHM R0817 0613952J04 RES 13K OHM R0818 0613952J18 RES 51K OHM R0821 0613952G67 RES 0 OHM R0823 0613952G67 RES 0 OHM R0825 0613952H49 RES 100 OHM R0826 0613952H49 RES 100 OHM R0827 0613952H49 RES 100 OHM R0828 0613952H49 RES 100 OHM R0831 0613952H49 RES 100 OHM R0832 0613952H49 RES 100 OHM R0833 0613952H49 RES 100 OHM R0834 0613952H49 RES 100 OHM R0835 0613952H49 RES 100 OHM R0836 0613952H49 RES 100 OHM R0837 0613952H49 RES 100 OHM R0838 0613952H49 RES 100 OHM R0840 0613952H49 RES 100 OHM R0852 0613952H73 RES 1000 OHM R0853 0613952J01 RES 10K OHM R0854 1866500A01 POTENTIOMETER R0855 0613952J04 RES 13K OHM R0856 0613952H89 RES 4700 OHM R0861 0613952H25 RES 10.0 OHM R0862 0613952H25 RES 10.0 OHM R0863 0613952J25 RES 100K OHM R0866 0613952J01 RES 10K OHM

Circuit

Ref

Motorola

Part No

Description

R0870 0613952J01 RES 10K OHM R0872 0613952G67 RES 0 OHM R0873 0613952J49 RES 1M OHM R0874 0613952H49 RES 100 OHM R0875 0613952J17 RES 47K OHM R0876 0613952G67 RES 0 OHM R0878 0613952G67 RES 0 OHM R0880 0613952H81 RES 2200 OHM R0881 0613952J01 RES 10K OHM R0882 0613952J17 RES 47K OHM R0883 0613952J01 RES 10K OHM R0884 0613952J01 RES 10K OHM R0885 0613952J01 RES 10K OHM R0886 0613952J17 RES 47K OHM R0887 0613952J01 RES 10K OHM R0888 0613952J01 RES 10K OHM R0889 0613952J13 RES 33K OHM R0890 0613952H59 RES 270 OHM R0901 0613952J18 RES 51K OHM R0902 0613952J04 RES 13K OHM R0903 0613952J09 RES 22K OHM R0904 0613952J16 RES 43K OHM R0905 0613952J28 RES 130K OHM R0911 0613952J18 RES 51K OHM R0912 0613952J04 RES 13K OHM R0913 0613952J09 RES 22K OHM R0914 0613952J16 RES 43K OHM R0915 0613952J28 RES 130K OHM R0931 0613952J18 RES 51K OHM R0932 0613952J04 RES 13K OHM R0933 0613952J09 RES 22K OHM R0941 0613952J01 RES 10K OHM R0943 0613952H85 RES 3300 OHM R0945 0613952J21 RES 68K OHM R0947 0613952H89 RES 4700 OHM R0949 0613952J25 RES 100K OHM R0951 0613952J01 RES 10K OHM R0953 0613952J01 RES 10K OHM R0955 0613958H25 RES 10.0 OHM R0957 0613958H25 RES 10.0 OHM R0961 0613952J01 RES 10K OHM R0963 0613952H85 RES 3300 OHM R0965 0613952J21 RES 68K OHM R0967 0613952H89 RES 4700 OHM R0969 0613952J25 RES 100K OHM R0971 0613952J01 RES 10K OHM

Circuit

Ref

Motorola

Part No

Description

Page 76

4-22 Controlhead GM380/1280 - PCB 8486178B03/B04/8471237L01 / Schematics

* Motorola Depot Servicing onlyReference designators with an asterisk indicate components which are not fieldreplaceable because they need to be calibrated with specialized factory equipment after installation. Radios in which these parts have been replaced in the field will be off frequency at temperature extremes.

R0973 0613952J01 RES 10K OHM R0975 0613958H25 RES 10.0 OHM R0977 0613958H25 RES 10.0 OHM R0991 0613958H59 RES 270 OHM R0992 0613958H59 RES 270 OHM R0993 0613958H59 RES 270 OHM R0994 0613952J01 RES 10K OHM R0995 0613952J25 RES 100K OHM R0996 0613952J25 RES 100K OHM R0997 0613952J25 RES 100K OHM R0998 0613952J01 RES 10K OHM R0999 0613952J01 RES 10K OHM U0861 5114014A22 IC LINEAR VOLTAGE REG

U0871 5166553A01

MICROCONTROLLER

MC68HC71 U0873 4886061B01 CER RESO 8.00MHZ U0941 5114005A19 ICOP AMP SO-8 VR0812 4813977M11 DIODE MBZ5232 VR0813 4813979C11 DIODE SOT-26/SC-74 VR0814 4813979C11 DIODE SOT-26/SC-74 VR0851 4813977M11 DIODE MBZ5232 VR0855 4813977M11 DIODE MBZ5232

Circuit

Ref

Motorola

Part No

Description

Page 77

Professional Radio

GM Series

Controller

Service Information

Issue: May 2007

Page 78

Computer Software Copyrights

The Motorola products described in this manual may include copyrighted Motorola comp uter 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 comput er 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 royaltyfree license to use that arises by operation of law in the sale of a product.

Page 79

iii

Table of Contents

Chapter 1 THEORY OF OPERATION

1.0 Controller Circuits ................................................................................................1-1

1.1 Overview.........................................................................................................1-1

1.2 General...........................................................................................................1-1

1.3 Radio Power Distribution................................................................................1-2

1.4 Electronic ON/OFF.........................................................................................1-3

1.5 Emergency .....................................................................................................1-4

1.6 Mechanical ON/OFF.......................................................................................1-4

1.7 Ignition............................................................................................................1-5

1.8 Microprocessor Clock Synthesizer.................................................................1-5

1.9 Serial Peripheral Interface (SPI).....................................................................1-5

1.10 SBEP Serial Interface.....................................................................................1-6

1.11 General Purpose Input/Output........................................................................1-6

1.12 Normal Microprocessor Operation..................................................................1-7

1.13 FLASH Electronically Erasable Programmable Memory................................1-8

1.14 Electrically Erasable Programmable Memory (EEPROM)..............................1-9

1.15 Static Random Access Memory (SRAM)........................................................1-9

2.0 Controller Board Audio and Signalling Circuits....................................................1-9

2.1 General - Audio Signalling Filter IC with Compander.....................................1-9

2.2 Transmit Audio Circuits ................................................................................1-10

2.3 Transmit Signalling Circuits..........................................................................1-12

2.4 Receive Audio Circuits .................................................................................1-14

2.5 Receive Signalling Circuits...........................................................................1-17

2.6 Voice Storage...............................................................................................1-18

Chapter 2 TROUBLESHOOTING CHARTS

1.0 Controller ............................................................................................................2-1

Page 80

Chapter 3 CONTROLLER SCHEMATICS

1.0 Allocation of Schematics and Circuit Boards.......................................................3-1

2.0 T2 Controller .......................................................................................................3-3

2.1 T2 Controller Parts List ........................................................................................3-8

3.0 T5 Controller .....................................................................................................3-10

3.1 T5 Controller Parts List ......................................................................................3-16

4.0 T6/7 Controller ..................................................................................................3-18

4.1 T6/7 Controller Parts List...................................................................................3-25

5.0 T9 Controller .....................................................................................................3-27

5.1 T9 Controller Parts List ......................................................................................3-33

5.2 T9 Controller Parts Li st (8471224L01)...............................................................3-35

6.0 T11 Controller ...................................................................................................3-37

6.1 T11 Controller Parts List ....................................................................................3-42

7.0 T12 Controller ...................................................................................................3-44

7.1 T12 Controller Parts List ....................................................................................3-50

Page 81

Chapter 1

THEORY OF OPERATION

1.0 Controller Circuits

1.1 Overview

This section provides a detailed theory of operation for the radio and it s componen ts. The main r adio is a single board design, consisting of the transmitter, receiver, and controller circuits. The main board is designed to accept one additional option board. This may provide functions such as secure voice/data, voice storage or signalling decoder.

A controlhead is either mounted directly or connected by an extension cable. The controlhead contains, LED indicators, a microphone connector, buttons and dependant of the radio type, a display and a speaker. These provide the user with interface control over the various features of the radio.

If no controlhead is mounted directly on the front of the radio, an ex pansion board con taining circuitry for special applications can be mounted on the front of the radio. An additional controlhead can be connected by an extension cable.

In addition to the power cable and antenna cable, an accessory cable can be attached to a connector on the rear of the radio. The accessory cable provides the necessary connections for items such as external speaker, emergency switch, foot operated PTT, and ignition sensing, etc

1.2 General

The radio controller consists of 3 main subsections:

■ Digital Control

■ Audio Processing

■ Voltage Regulation.

The digital control section of the radio is based upon an open architecture controller configuration.It consists of a microprocessor, support memory, supp ort logic, sign al MUX ICs, the On/Of f circuit, an d general purpose Input/Output circuitry.

The controller uses the Motorola 68HC11FL0 microprocessor (U0101). In addition to the microprocessor, the controller has 3 external memory devices. The 3 memory devices consist of a 32Kbyte SRAM (U0122), a 512Kbyte FLASH EEPROM (U0121), and a 16Kbyte EEPROM (U0111).

Note: From this point on the 68HC11FL0 microprocessor will be referred to as µP. References to a controlhead will be to the controlheads with display.

Page 82

1-2 THEORY OF OPERATION

Figure 1-1 Controller Block Diagram

1.3 Radio Power Distribution

The DC power distribution throughout the radio board is shown in Figure 2-1. Voltage regulation for the controller is provided by 4 separate devices; U0651 (MC78M05) +5V, U0641 (LM2941) +9.3V, U0611 (LM2941) SWB+ limited to 16.5V and VSTBY 5V (a combination of R0621 and VR0621). An additional 5V regulator is located on the RF section.

The DC voltage applied to connector J0601 supplies power directly to the electron ic on/off control, RF power amplifier, 16.5V limiter, 9.3V regulator, Audio PA and 5.6V stabilization circuit. The 9.3V regulator (U0641) supplies power to the 5V regulator (U0651) and the 6V voltage divider Q0681.

Regulator U0641 is used to generate the 9.3 volts required by some audio circuits, the RF circuitry and power control circuitry. Input and output capacitors (C0641 and C0644 / C0645) are used to reduce high frequency noise. R0642 / R0643 set the output volt age of the regula tor. If the voltage at pin 1 is greater than 1.3 volts the regulator output decreases and if the voltage is less than 1.3 volts the regulator output increases. This regulator output is electron ically enabled by a 0 volt signal on pin 2. Q0661, Q0641 and R0641 are used to disable the regulator when the radio is turned off.

Voltage regulation providing 5V for the digital circuitry is done by U0651. Operating voltage is from the regulated 9.3V supply. Input and output capacitors (C0651 / C0652 and C0654 / C0655) are used to reduce high frequency noise and provide proper ope ration d uring batter y transie nts . Voltage sense device U0652 or alternatively U0653 provides a reset output that goes to 0 volts if the regulator output goes below 4.5 volts. This is used to reset the controller to prevent improper operation. Diode D0651 prevents discharge of C0652 by negative spikes on the 9V3 voltage.

Transistor Q0681 and resistor s R0681 / R0682 divide the regulated 9. 3V down to about 6 volts. This voltage supplies the 5V regulator, located on the RF section. By reducing the supply voltage of the regulator, the power dissipation is divided between the RF section and the controller section.

External Microphone

Internal

Microphone

External Speaker

Internal

Speaker

SCI to Controlhead

Audio PA

Audio/Signalling Architecture

To Synthesizer

Mod Out

16.8 MHz Reference Clock from Synthesizer

Recovered Audio

To RF Section

SPI

Digital Architecture

µP Clock

5V Regulator (5VD)

RAM

EEPROM

FLASH

HC11FL0

ASFIC_CMP

Accessory &

5V from Synthesizer Section (5V_RF)

Connector

Page 83

Controller Circuits 1-3

The voltage VSTBY, which is derived directly from the supply voltage by components R0621 and VR0621, is used to buffer the internal RAM. C0622 allows the ba ttery volt ag e to be disconnected for a couple of seconds without losing RAM parameters. Dual diode D0621 prevents radio circu itry from discharging this capacitor. When the supply voltage is applied to the radio, C0622 is charged via R0621 and D0621. To avoid that the µP enters the wrong mode when the radio is switched on while the voltage across C0622 is still too low, the regulated 5V charges C0622 via diode D0621.

Figure 2-1 DC Power Distribution Block Diagram

The voltage INT SW B+ from switching transistor Q0661 provides power to the circuit controlling the audio PA output. The voltage INT SW B+ voltage is monitored by the µP through voltage divider R0671 / R0672 and line BATTERY VOLTAGE. Diode VR0671 limits the divided voltage to 5.6V to protect the µP.

Regulator U0611 is used to generate the voltage for the switched supply voltage output (SWB+) at the accessory connector J0501 pin 13. U0611 is configured to operate as a switch with voltage and current limit. R0611 / R0612 set the maximum output voltage to 16.5 volts. This limitation is only active at high supply voltage levels. The regulator output is electronically enabled by a 0 volt signal on pin 2. Q0661, Q0641 and R0641 are used to disable the regulator when the radio is turned off. Input and output capacitors (C0603 and C0611 / C0612) are used to reduce high frequency noise.

Diode VR0601 acts as protection against transients and wrong polarity of the supply voltage. Fuse F0401 prevents damage of the board in case the FLT A+ line is shorted at the controlhead

connector.

1.4 Electronic ON/OFF

The radio has circuitry which allows radio software and/or external triggers to turn the radio on or off without direct user action. For example, automatic turn on when ignition is sensed and off when ignition is off.

Q0661 is used to provide INT SW B+ to the various radio circuits and to enable the voltage regulators via transistor Q0641. Q0661 contains an pnp and an npn transistor and acts as an electronic on/off switch. The switch is on when the collector of the npn transistor within Q0661 is low. When the radio is off the collector is at supply voltage level. This effectively prevents current flow

VCOBIC

FRACTN

VSTBY

5V_RF

9V3

FLT_A+

5VD

SWB+

Option Board

40 Pin Connector

PA, Driver

Antenna Switch

Controlhead

12 Pin Connector

Accessories

20 Pin Connector

J0601

13.2V

PASUPVLTG

FLT_A+

16.5V

Limiter

ON / OFF

Control

ASFIC_CMP

5.6V

Ignition Emergency ON/OFF

9.3V

Regulator

Audio PA

Regulator

5VD

Regulator

5V/ VDDA

MCU

µP, R A M ,

FLASH & EEPROM

PCIC,

TX Amp

Temp Sense

RX RF Amp

IF Amp

F0401

Page 84

1-4 THEORY OF OPERATION

from emitter to collector of the pnp transistor. When the radio is turned on the voltage at the base of the npn transistor is pulled high and the pnp transistor switches on (saturation). With voltage INT SWB+ now at supply voltage level, transistor Q0641 pulls pin 2 of the volt a ge regu lators U0611 and U 0641 to ground level and thereby enables their outputs. The electronic on/off circuitry can be enabled by the microprocessor (through ASFIC CMP port GCB2, line DC POWER ON), the emergency switch (line EMERGENCY CONTROL), the mechanical on/off/volume knob on the controlhead (line ON OFF CONTROL), or the ignition sense circuitry (line IGNITION CONTROL). If any of the 4 paths cause a low at the collector of the npn transistor within Q0661, the electronic "ON" is engaged.

1.5 Emergency

The emergency switch (J0501 pin 9), when engaged, grounds the base of Q0662 via line EMERGENCY CONTROL. This switches Q0662 off and resistor R0662 pulls the collector of Q0662 and the base of Q0663 to levels above 2 volts. Transistor Q0663 switches on and pulls the collector of the npn transistor within Q0661 to ground level and thereby enables the voltage regulators via Q0641. When the emergency switch is released R0541 pulls the base of Q0662 up to 0.6 volt s. This causes the collector of transistor Q0662 to go low (0.2V), thereby switching Q0663 off.

While the radio is switched on, the microprocessor monitors the voltage at the emergency input on the accessory connector via pin 60 and line GP5 IN ACC9. Three different conditions are distinguished, no emergency, emergency, and open connection to the em ergency switch. If no emergency switch is connected or the connection to the emergency switch is broken, the resistive divider R0541 / R0512 will set the voltage to about 4.7 volts. If an emergency switch is co nnected, a resistor to ground within the emergency switch will reduce the voltage on line GP5 IN ACC9 to inform the microprocesso r t hat the emer ge ncy switch is o per atio n al. An engag ed e merge ncy switch pulls line GP5 IN ACC9 to ground level. Diode D0179 limits the voltage to protect the microprocessor input.

While EMERGENCY CONTROL is low, INT SW B+ is on, the microprocessor starts execution , reads that the emergency input is active through the voltage level of line GP5 IN ACC9, and sets the DC POWER ON output of the ASFIC CMP pin 13 to a logic high. This high will keep Q0661 and Q0641 switched on. This operation allows a momentary press of the emergency switch to power up the radio. When the microprocessor has finished processing the emergency press, it sets the DC POWER ON line to a logic 0. This turns off Q0661 and the radio turns off. Notice that the microprocessor is alerted to the emergency condition via line GP5 IN ACC9. If the radio was already on when emergency was triggered then DC POWER ON would already be high.

1.6 Mechanical ON/OFF

This refers to the typical on/off/volume knob, located on the controlhead, and which turns the radio on and off. If the radio is turned off and the on/off/volume knob is pressed, line ON OFF CONTROL (J0401 pin

11) goes high and switches the radio’s voltage regulators on as long as the button is pressed. The microprocessor is alerted through line ON OFF SENSE (U0101 pin 6) which is pulled to low by Q0110 while the on/off/volume knob is pressed. In addition, an interrupt is generated at µP pin 96. The µP asserts line DC POWER ON via ASFIC CMP, pin 13 high which keeps Q0661 and Q0641, and in turn the radio, switched on. When the on/off/volume knob is released again the controlh ead informs the µP via SBEP bus about the knob release. (See SBEP Serial Interface subsection for more details). This informs the µP to keep the r adio switched on and continue with norma l operation. If the on/off/volume knob is pressed while the radio is on, the controlhead informs the µP via SBEP bus about the knob status. (See SBEP Serial Interface subsection for more details). After a short delay time the microprocessor switches the radio off by setting DC POWER ON to low via ASFIC CMP pin 13.

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Controller Circuits 1-5

1.7 Ignition

Ignition sense is used to prevent the radio from dra ining the vehicle’s battery because the engine is not running.

When the IGNITION input (J0501 pin 10) goes above 5 volts Q0661 is turned on via line IGNITION CONTROL. Q0661 turns on INT SW B+ and the voltage regulators by turning o n Q0641 and the microprocessor starts execution. The microprocessor is alerted through line GP6 IN ACC10. The voltage at the IGNITION input turns Q0181 on, which pulls microprocessor pin 74 to low. If the software detects a low state it asserts DC POWER ON via ASFIC pin 13 high which keeps Q0661 and Q0641, and in turn the radio switched on.

When the IGNITION input goes below 3 volts, Q0181 switches off and R0181 pulls microprocessor pin 74 to high. This alerts the software to switch off the radio by setting DC POWER ON to low. The next time the IGNITION input goes above 5 volts the above process will be repeated.

1.8 Microprocessor Clock Synthesizer

The clock source for the microprocessor system is generated by the ASFIC CMP (U0221). Upon power-up the synthesizer IC (FRAC-N) generates a 16.8 MHz waveform that is routed from the RF section to the ASFIC CMP pin 34. For the main board controller the ASFIC CMP uses 16.8 MHz as a reference input clock signal for its internal synthesizer . The ASFIC CMP, in addition to audio circuitry , has a programmable synthesizer which can generate a synthesized signal ranging from 1200Hz to

32.769MHz in 1200Hz steps. When power is first applied, the ASFIC CMP will generate its default 3.6864MHz CMOS square

wave UP CLK (on U0221 pin 28) and this is routed to the microprocessor (U0101 pin 90). After the microprocessor starts operation, it reprograms the ASFIC CMP clock synthesizer to a higher UP CLK frequency (usually 7.3728 or 14.7456 MHz) and continues operation.

The ASFIC CMP may be reprogrammed to change the clock synthesizer frequencies at various times depending on the software features that are executing. In addition, the clock frequency of the synthesizer is changed in small amounts if there is a possibility of harmonics of this clock source interfering with the desired radio receive frequency.

The ASFIC CMP synthesizer loop uses C0245, C0246 and R024 1 to set the switching time and jitter of the clock output. If the synthesizer cannot generate the required clock frequency it will switch back to its default 3.6864MHz output.

Because the ASFIC CMP synthesizer and the µP system will not operate without the 16.8 MHz reference clock it (and the voltage regulators) should be checked first in debugging the system.

The microprocessor uses XTAL Y0131 and associated components to form a Real Time Clock (RTC). It may be used to display the time on controlheads with display or as time stamp fo r incoming calls or messages. The real time clock is powered from the voltage VSTBY to keep it running while the radio is switched off. When the radio was disconnecte d from it’s supply voltag e, the time must be set again.

1.9 Serial Peripheral Interface (SPI)

The µP communicates to many of the IC’s throu gh its SPI port. This port consists of SPI TRANSMIT DATA (MOSI) (U0101-100), SPI RECEIVE DATA (MISO) (U0101-99), SPI CLK (U0101-1) and chip select lines going to the various ICs, connected on the SPI PORT (BUS). This BUS is a synchronous bus, in that the timing clock signal CLK is sent while SPI data (SPI TRANSMIT DATA or SPI RECEIVE DATA) is sent. Therefore, whenever there is activity on either SPI TRANSMIT DATA or SPI RECEIVE DATA there should be a un iform sign al on CLK. The SPI TRANSMIT DATA is used to

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1-6 THEORY OF OPERATION

send serial from a µP to a device, and SPI RECEIVE DATA is used to send data from a device to a µP.

On the controller there are two ICs on the SPI BUS, ASFIC CMP (U0221-2 2), and EEPROM (U011 1-

5). In the RF sections there are 2 ICs on the SPI BUS, the FRAC-N Synthesizer, and the Power Control IC (PCIC). The SPI TRANSMIT DATA and CLK lines going to the RF section are filtered by L0481 / R0481 and L0482 / R0482 to minimize noise. The chip select line CSX from U0101 pin 2 is shared by the ASFIC CMP, FRAC-N Synthesizer and PCIC. Each of thes e IC‘s ch eck the SPI data and when the sent address information matches the IC’s address, the following data is processed. The chip select lines for the EEPROM (EE CS), Voice S torage (VS CS), exp ansion board (EXP1 CS, EXP2 CS) and option board (OPT CS) are decoded by the address decoder U0141.

When the µP needs to program any of these IC’s it brings the chip select line CSX to a logic 0 and then sends the proper data and clock signals. The amount of data sent to the various IC’s are different, for example the ASFIC CMP can receive up to 19 bytes (152 bits) while the PCIC can receive up to 6 bytes (48 bits). After th e d ata has been sent the chip select line is returned to logic 1.

The Option board interfaces are different in that the µP can also read data back from devices connected.The timing and operation of this interface is specific to the option connected, but generally follows the pattern:

1. an option board device generates a service request via J0551-29, line RDY and µP pin 79,

2. the main board asserts a chip select for that option board device via U0141-14, line OPT CS,

J0551-30,

3. the main board µP generates the CLK (J0551-3),

4. the main board µP writes serial data via J0551-15 and reads serial data via J0551-16 and,

5. when data transfer is complete the main board terminates the chip select and CLK activity.

1.10 SBEP Serial Interface

The SBEP serial interface allows the radio to communicate with the Customer Programming Software (CPS), or the Universal T u ner via the Radio Interface Box (RIB). This interface connect s to the microphone connector via controlheadcontrolhead connector (J0401-8) and to the accessory connector J0501-17 and comprises BUS+. The line is bi-directional, me aning that either th e radio o r the RIB can drive the line. The microprocessor sends serial data via pin 98 and D010 1 and it reads serial data via pin 97. Whenever the microprocessor detects activity on the BUS+ line, it starts communication.

In addition, the SBEP serial interface is used to communicate with a connected controlhead. When a controlhead key is pressed or the volume knob is rotated, the line ON OFF CONTROL goes high. This turns on transistor Q0110 which pulls line ON OFF SENSE and µP pin 6 to ground level. In addition, an interrupt is generated at µP pin 96. This indicates that the controlhead wants to start SBEP communication. The microprocessor then requests the data from the controlhead. The controlhead starts sending and after all data has been send, the ON OFF CONTROL line goes low. The controlheadcontrolhead ignores any data on BUS+ during SBEP communication with the CPS or Universal Tuner.

1.11 General Purpose Input/Output

The controller provides eight general purpose lines (DIG1 through DIG8) a vailable on the acce ssory connector J0501 to interface to external options. Lines DIG IN 1,3,5,6, are inputs, DIG OUT 2 is an output and DIG IN OUT 4,7,8 are bidirectional. The software and the hardware configuration of the radio model define the function of each port.

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DIG IN 1 can be used as external PTT input, DATA PTT input or others, set by the CPS. The µP reads this port via pin 77 and Q0171.

DIG OUT 2 can be used as normal output or external alarm output, set by the CPS. Transistor Q0173 is controlled by the µP via ASFIC CMP pin 14.

DIG IN 3 is read by µP pin 61 via resistor R0176 DIG IN 5 can be used as normal input or emergency input, set by the CPS. The µP re ads this port via

R0179 and µP pin 60. Diode D0179 limits the voltage to protect the µP input. DIG IN 6 can be used as normal input, set by the CPS. The µP reads this port via pin 74 and Q0181. DIG IN OUT 4,7,8 are bi-directional and use the same circuit configuration. Each port uses an output

transistor Q0177, Q0183, Q0185 controlled by µP pin s 46, 4 7, 53. The port s a re read by µP pins 75, 54, 76. To use one of the ports as input the µP must turn off the corresponding output transistor.

In addition the signals from DIG IN 1, DIG IN OUT 4 are fed to the option board connector J0551 a nd the expansion board connector J0451.

1.12 Normal Microprocessor Operation

For this radio, the µP is configured to operate in one of two modes, expanded and bootstrap. In expanded mode the µP uses external memory devices to operate, whereas in bootstrap operation the µP uses only its internal memory. In normal operation of the radio the µP is operating in expanded mode as described below.

In expanded mode on this radio, the µP (U0101) has access to 3 external memory devices; U0121 (FLASH EEPROM), U0122 (SRAM), U0111 (EEPROM). Also, within the µP there are 3Kbytes of internal RAM, as well as logic to select external memory devices.

The external EEPROM (U0111) space contains the information in the radio which is customer specific, referred to as the codeplug. This information consists of items such as: 1) what band the radio operates in, 2) what frequencies are assigned to what channel, and 3) tuni ng information. (See the particular device subsection for more details.)

The external SRAM (U0122) as well as the µP’s own internal RAM space are used for temporary calculations required by the software during execution. All of the data stor ed in both of these locations is lost when the radio powers off (See the particular device subsection for more details).

The FLASH EEPROM contains the actual Radio Operating Software. This software is common to all open architecture radios within a given mode l type . Fo r ex am p le Trunking radios may have a different version of software in the FLASH EEPROM than a non Trunking radio (See the particular device subsection for more details).

The µP provides an address bus of 16 address lines (ADDR 0 - ADDR 15), and a data bus of 8 data lines (DATA 0 - DATA 7). There are also 3 control lines; CSPROG (U0101-38) to chip select U012130 (FLASH EEPROM), CSGP2 (U0101-41) to chip select U0122-20 (SRAM) and PG7 R W (U0101-

4) to select whether to read or to write. The external EEPROM (U0111-1), the OPTION BOARD and EXPANSION BOARD are selected by 3 lines of the µP using address decoder U0141. The chips ASFIC CMP / FRAC-N / PCIC are selected by line CSX (U0101-2).

When the µP is functioning normally, the address and data lines should be toggling at CMOS logic levels. Specifically, the logic high levels should be between 4.8 and 5.0V, and the logic low levels should be between 0 and 0.2V. No other intermediate levels should be observed, and the rise and fall times should be <30ns.

The low-order address lines (ADDR 0 - ADDR 7) and the data lines (DATA 0-DATA 7) should be toggling at a high rate, e. g. , you should set your oscilloscope sweep to 1us/div. or faster to observe individual pulses. High speed CMOS transitions should also be observed on the µP control lines.

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On the µP the lines XIRQ (U0101-48), MODA LIR (U0101-58), MODB VSTPY (U0101-57) and RESET (U0101-94) should be high at all times during normal operation . Whenever a data or addr ess line becomes open or shorted to an adjacent line, a common symptom is that the RESET line goes low periodically, with the period being in the order of 20msecs. In the case of shorted lines you may also detect the line periodically at an intermediate level, i.e. around 2.5V when 2 shorted lines attempt to drive to opposite rails.

The MODA LIR (U0101-58) and MODB VSTPY (U0101-57) inputs to the µP must be at a logic 1 for it to start executing correctly. After the µP starts execution it will periodically pulse these lines to determine the desired operating mode. While the Central Processing Unit (CPU) is running, MODA LIR is an open-drain CMOS output which goes low whenever the µP begins a new instruction (an instruction typically requires 2-4 external bus cycles, or memory fetches). However, since it is an open-drain output, the waveform rise assumes an exponential shape similar to an RC circuit.

There are 8 analogue to digital converter ports (A/D) on U0101. They are labelled within the device block as PE0-PE7. These lines sense the voltage level ranging from 0 to 5V of the input line and convert that level to a number ranging from 0 to 255 which can be read by the software to take appropriate action.

For example U0101-67 is the battery voltage detect line. R0671 and R0672 form a resistor divider on INT SWB+. With 30K and 10K and a voltage range of 11V to 17V, that A/D port would see 2.74V to

4.24V which would then be converted to ~140 to 217 respectively. U0101-69 is the high reference voltage for the A/D ports on the µP. Capacitor C0101 filters the +5V

reference. If this voltage is lower than +5V the A/D readings will be incorrect. Likewise U0101-68 is the low reference for the A/D ports. This line is normally tied to ground. If this line is not connected to ground, the A/D readings will be incorrect.

1.13 FLASH Electronically Erasable Programmable Memory (FLASH EEPROM)

The 512KByte FLASH EEPROM (U0121) contains the radio’s operating software. This software is common to all open architecture radios within a given mod el type. For examp le Trunking radios may have a different version of software in the FLASH EEPROM than a non Trunking radio. This is, as opposed to the codeplug information stored in EEPROM (U0111) which could be different from one user to another in the same company.

In normal operating mode, this memory is only read, not written to. The memory access signals (CE, OE and WE) are generated by the µP.

To upgrade/reprogram the FLASH software, the µP must be set in bootstrap op erating mode. This is done by pulling microprocessor pins MODA LIR (U0101-58) and MODB VSTBY (U0101-57) to low during power up. When accessory connector pin 18 is at ground level, diode D0151 will pull both microprocessor pins to low . The same can be don e by a level of 12 volts on line ON OFF CONTROL from the controlhead. Q0151 pulls diode D0151 and in turn both microprocessor pins to low. Diode VR0151 prevents entering bootstrap operating mode during normal power up.

In bootstrap operating mode the µP controls the FL ASH EN OE (U0121-32) input by µP pin 86. Chip select (U0121-30) and read or write operation (U0121-7) are controlled by µP pins 38 and 4.

The FLASH device may be reprogrammed 1,000 times without issue. It is not recommended to reprogram the FLASH device at a temperature below 0°C.

Capacitor C0121 serves to filter out any AC noise which may ride on +5V at U0121.

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Controller Board Audio and Signalling Circuits 1-9

1.14 Electrically Erasable Programmable Memory (EEPROM)

The external 16 Kbyte EEPROM (U0111) contains additional radio operating parameters such as operating frequency and signalling features, commonly know as the codeplug. It is also used to store radio operating state parameters such as current mode and volume. This memory can be written to in excess of 100,000 times and will retain the data when power is removed from the radio. The memory access signals (SI, SO and SCK) are generated by the µP and chip select (CS) is generated by address decoder U0141-15.

1.15 Static Random Access Memory (SRAM)

The SRAM (U0121) contains temporary radio calculations or parameters that can change very frequently, and which are generated and stored by the software during its normal operation. The information is lost when the radio is turned off.

The device allows an unlimited number of write cycles. SRAM accesses are indicated by the CS signal U0122-20 (which comes from U0101-CSGP2) going low. U0122 is commonly referred to as the external RAM as opposed to the internal RAM which is the 3 Kbytes of RAM which is part of the 68HC11FL0. Both RAM spaces serve the purpose. However, the internal RAM is used for the calculated values which are accessed most often.

Capacitor C0122 serves to filter out any ac noise which may ride on +5V at U0122.

2.0 Controller Board Audio and Signalling Circuits

2.1 General - Audio Signalling Filter IC with Compander (ASFIC CMP)

The ASFIC CMP (U0221) used in the controller has 4 functions;

1) RX/TX audio shaping, i.e. filtering, amplification, attenuation

2) RX/TX signalling, PL/DPL/HST/MDC/MPT

3) Squelch detection

4) Microprocessor clock signal generation (see Microprocessor Clock Synthesizer Description).

The ASFIC CMP is programmable through the SPI BUS (U0221-20/21/22), normally receiving 19 bytes. This programming sets up various paths within the ASFIC CMP to route audio and/or signalling signals through the appropriate filtering, ga in and attenuator blocks. The ASFIC CMP also has 6 General Control Bits GCB0-5 which are CMOS level outputs and used for NOISE BLANKER (GCB0) in Low Band radios, EXTERNAL ALARM (GCB1) and DC POWER ON (GCB2) to switch the voltage regulators (and the radio) on and of f. GCB3 controls U0251 pin 11 to output either RX FLAT AUDIO or RX FILTERED AUDIO on the accessory connector pin 11. GCB4 controls U0251 pin 10 to use either the external microphone input or the voice storage playback signal. GCB5 is used to switch the audio PA on and off.

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2.2 Transmit Audio Circuits

Refer to Figure 3-1 for reference for the following sections.

Figure 3-1 Transmit Audio Paths

2.2.1 Mic/Data Input Path

The radio supports 2 distinct microphone p aths known as internal (from controlhead) and external mic (from accessory connector J0501-2) and an auxiliary path (FLAT TX AUDIO, from accessory connector J0501-5). The microphones used for the radio require a DC biasing voltage provided by a resistive network.

These two microphone audio input paths enter the ASFIC CMP at U0221-48 (external mic) and U0221-46 (internal mic). Following the internal mic path; the microphone is plugged into the radio controlhead and is connected to the controller board via J0401-9.

From here the signal is routed via R0409 and line INT MIC to R0205. R0201 an d R0202 p rovide the

9.3VDC bias. Resistive divider R0205 / R0207 divide the input signal by 5.5 and provide input protection for the CMOS amplifier input. R0202 and C0201 provide a 560 ohm AC path to ground that sets the input impedance for the microphone and determines the gain based on the emitter resistor in the microphone’s amplifier circuit.

C0204 serves as a DC blocking capacitor. The audio signal at U0221-46 (TP0221) should be approximately 14mV for 1.5kHz or 3kHz of deviation with 12.5kHz or 25kHz channel spacing.

The external microphone signal enters the radio on accessory connector J0501 pin 2 and is routed via line EXT MIC to R0206. R0203 and R0204 provide the 9.3VDC bias. Resistive divider R0206 / R0208 divide the input signal by 5.5 and provide input protection for the CMOS amplifier input. R0204 and C0202 provide a 560 ohm AC path to ground that sets the input impedance for the microphone and determines the gain based on the emitter resistor in the microphone’s amplifier circuit.

MIC  IN

MOD IN

TO RF

SECTION

(SYNTHESIZER)

J0501

ACCESSORY

CONNECTOR

J0401

CONTROL HEAD

CONNECTOR

MIC

EXT MIC

FLAT TX

AUDIO



OUT

OPTION BOARD

FILTERS AND

PREEMPHASIS

HS SUMMER

SPLATTER

FILTER

LS SUMMER

LIMITER

ATTENUATOR

VCO 

ATN

TX RTN

TX SND

MIC INT

AUX  TX

ASFIC_CMP 

U0221

TP0221

TP0222

MIC EXT

J0451

J0551

FLAT

TX RTN

EXPANSION BOARD

IN/OUT

OUT

FROM

µP Pin3

U0211-4

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Controller Board Audio and Signalling Circuits 1-11

C0254 serves as a DC blocking capacitor. Multi switch U0251 controlled by ASFIC CMP port GCB4 selects either the external microphone input signal or the voice storage playback signal for e ntering the ASFIC CMP at pin 48. The audio signal at U0221-48 (TP0222) should be approximately 14mV for 1.5kHz or 3kHz of deviation with 12.5kHz or 25kHz channel spacing.

The FLAT TX AUDIO path is used for transmitting data signals and has therefore no limiter or filters enabled inside the ASFIC CMP. When this path is enabled via CPS and DATA PTT is asserted, any signal on this path is directly fed to the modulator. Signals applied to this path either via accessory connector J0501, expansion board connector J0451 or option board connector J0551 must be filtered and set to the correct level externally or on the option board in order not to exceed the maximum specified transmit deviation and transmitted power in the adjacent channels. The attenuator inside the ASFIC CMP changes the FM deviation of the data signal according to the channel spacing of the active transmit channel.

The FLAT TX AUDIO signal from accessory connector J0501-5 is fed to the ASFIC CMP (U0221) pin42 through C0541 and line FLAT TX RTN, switch U0251 and buffer U0211-4. When the radio switches from receive to transmit mode the µP opens switch U0251 for a short pe riod to preven t that any applied signal can cause a transmit frequency offset. Buffer U0211-4 sets the correct DC level and ensures a short settle period when the radio is switched on . Inside the ASFIC CMP the signal is routed directly to the attenuator , which set s the FM deviation acco rding to the channe l spacing of the active transmit channel and emerges from the ASFIC CMP at U0221-40, at which point it is routed to the RF section.

The ASFIC has an internal AGC that can control the gain in the mic audio path. The AGC can be disabled / enabled by the µP. Another feature that can be enabled or disabled in the ASFIC is the VOX. This circuit, along with the capacitor at U0221-7, provides a DC voltage that can allow the µP to detect microphone audio. The ASFIC can also be programmed to route the microphone audio to the speaker for public address operation.

2.2.2 PTT Sensing and TX Audio Processing

Microphone PTT coming from the controlhead is sent via SBEP bus to the microprocessor. An external PTT can be generated by grounding pin 3 on the accessory connector if this input is programmed for PTT by the CPS. When microphone PTT is sensed, the µP will always configure the ASFIC CMP for the "internal" mic audio path, and external PTT will result in the external mic audio path being selected.

Inside the ASFIC CMP, the mic audio is filtered to eliminate frequency components outside the 3003000Hz voice band, and pre-emphasized if pre-emphasis is enabled. The signal is then limited to prevent the transmitter from over deviating. The limited mic audio is then routed through a summer, which is used to add in signalling data, and then to a splatter filter to eliminate high frequency spectral components that could be generated by the limiter. The audio is then routed to an attenuator, which is tuned in the factory or the field to set th e proper amount of FM deviation. The TX audio emerges from the ASFIC CMP at U0221-40 MOD IN, at which point it is routed to the RF section.

Dependent on the radio model, input pin 3 on the accessory connector can be programmed fo r DATA PTT by the CPS. When DATA PTT is sensed, the µP will always configure the ASFIC CMP for the flat TX audio path. Limiter and any filtering will be disabled. The signal is routed directly to the attenuator, which sets the FM deviation according to the channel spacing of the active tran sm it channel and emerges from the ASFIC CMP at U0221-40, at which point it is routed to the RF section.

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2.2.3 TX Secure Audio (optional)

The audio follows the normal transmit audio processing until it emerges from the ASFIC CMP TX SND pin (U0221-44), which is fed to the Secure board residing at option connector J0551-33. The Secure board contains circuitry to amplify, encrypt, and filter the audio. The encrypted signal is then fed back from J0551-32 to the ASFIC CMP TX RTN input (U0221 -36). The signal level at this pin should be about 65mVrms. The signal is then routed through the TX path in the ASFIC CMP and emerges at MOD IN pin 40.

2.2.4 Option Board Transmit Audio

The audio follows the normal transmit audio processing until it emerges from the ASFIC CMP TX SND pin (U0221-44), which is fed to the option board residing at option connector J0551-33. The option board contains circuitry to process the audio. The processed signal is then fed back from J0551-32 to the ASFIC CMP TX RTN input (U0221-36). The signal level at this pin should be about 65mVrms. The signal is then routed thr ough the TX path in the ASFIC CMP and emerges at MOD IN pin 40.

2.3 Transmit Signalling Circuits

Refer to Figure 4-1 for reference for the following sections.

Figure 4-1 Transmit Signalling Paths

From a hardware point of view , there are 3 types of signalling:

1) sub-audible data (PL / DPL / Connect Tone) that gets summed with transmit voice or signalling,

2) DTMF data for telephone communication in trunked and conventional systems and

3) Audible signalling including Select 5, MPT-1327, MDC, High speed Trunking. NOTE: All three types are supported by the hardware while the radio software determines which

signalling type is available.

40 MOD IN

TO RF

SECTION

(SYNTHESIZER)

HIGH SPEED CLOCK IN (HSIO)

LOW SPEED  CLOCK IN (LSIO)

ASFIC_CMP U0221

MICRO

CONTROLLER



U0101

HS

SUMMER

5-3-2 STATE 

ENCODER

DTMF 

ENCODER

SPLATTER

FILTER

PL

ENCODER

LS

SUMMER

ATTENUATOR

SPI

BUS

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Controller Board Audio and Signalling Circuits 1-13

2.3.1 Sub-audible Data (PL/DPL)

Sub-audible data implies signalling whose bandwidth is below 300Hz. PL and DPL waveforms are used for conventional operation and connect tones for trunked voice channel oper ation. The trunking connect tone is simply a PL tone at a higher deviation level than PL in a conventional system. Although it is referred to as "sub-audible data," the actual frequency spectrum of these waveforms may be as high as 250 Hz, which is audible to the human ear. However, the radio receiver filters out any audio below 300Hz, so these tones are never heard in the actual system.

Only one type of sub-audible data can be generated by U0221 (ASFIC CMP) at any one time. The process is as follows, using the SPI BUS, the µP programs the ASFIC CMP to set up the proper lowspeed data deviation and select the PL or DPL filters. The µP then generates a squa re wave which strobes the ASFIC PL / DPL encode input LSIO U0221-18 at twelve times the desired data rate. For example, for a PL frequency of 103Hz, the frequency of the square wave would be 1236Hz.

This drives a tone generator inside U0221 which generates a staircase approxima tion to a PL sine wave or DPL data pattern. This internal waveform is then low-p ass filtered and summed with voice or data. The resulting summed waveform then appears on U0221-40 (MOD IN), where it is sent to the RF board as previously described for transmit audio. A tru nking conn ect tone would b e g ene rate d in the same manner as a PL tone.

2.3.2 High Speed Data

High speed data refers to the 3600 baud data waveforms, known as Inbound Signalling Words (ISWs) used in a trunking system for high speed communication between the central controller and the radio. To generate an ISW , the µP first pro grams the ASFIC CMP (U022 1) to the proper filter and gain settings. It then begins strobing U0221-19 (HSIO) with a pulse when the data is supposed to change states. U0221’s 5-3-2 State Encoder (which is in a 2-state mode) is then fed to the postlimiter summer block and then the splatter filter. From that point it is routed through the modulation attenuators and then out of the ASFIC CMP to the RF board. MPT 1327 and MDC are generated in much the same way as Trunking ISW . However, in some cases these signals may also pass through a data pre-emphasis block in the ASFIC CMP. Also these signalling schemes are based on sending a combination of 1200 Hz and 1800 Hz tones only. Microphone audio is muted during High Speed Data signalling.

2.3.3 Dual Tone Multiple Frequency (DTMF) Data

DTMF data is a dual tone waveform used during phone interconnect operation. It is the same type of tones which are heard when using a "Touch Tone" telephone.

There are seven frequencies, with four in the low group (697, 770, 852 , 941Hz) and th ree in the hig h group (1209, 1336, 1477Hz).

The high-group tone is generated by the µP (U0101-44) strobing U0221-19 at six times the tone frequency for tones less than 1440Hz or twice the frequency for tones gr eater tha n 1440Hz. The low group tone is generated by the ASFIC CMP, controlled by the µP via SPI bus. Inside U0221 the lowgroup and high-group tones are summed (with the amplitude of the high group tone being approximately 2 dB greater than that of the low group tone) and then pre-emphasized before being routed to the summer and splatter filter. The DTMF waveform then follows the same path as was described for high-speed data.

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2.4 Receive Audio Circuits

Refer to Figure5-5 for reference for the following sections.

Figure 5-1 Receive Audio Paths

2.4.1 Squelch Detect

The radio’s RF circuits are constantly producing an output at the discriminator (IF IC). This signal (DISC AUDIO) is routed to the ASFIC CMP’s squelch detect circuitry input DISC (U0221-2). All of the squelch detect circuitry is contained within the ASFIC CMP. Therefore from a user’s point of view, DISC AUDIO enters the ASFIC CMP, and the ASFIC CMP produces two CMOS logic outputs based on the result. They are CH ACT (U0221-16) and SQ DET (U0221-17).

The squelch signal entering the ASFIC CMP is amplified, filtered, attenuated, and rectified. It is then sent to a comparator to produce an active high signal on CH ACT. A squelch tail circuit is used to produce SQ DET (U0221-17) from CH ACT. The state of CH ACT and SQ DET is high (logic 1) when carrier is detected, otherwise low (logic 0).

CH ACT is routed to the µP pin 84 while SQ DET is routed to the µP pin 83. SQ DET is used to determine all audio mute / unmute decisions except for Conventional Scan. In

this case CH ACT is a pre-indicator as it occurs slightly faster than SQ DET.

FLT/FLAT RX AUDIO

J0501

EXTERNAL



SPEAKER

INTERNAL

SPEAKER

ACCESSORY CONNECTOR

CONTROLHEAD

CONNECTOR

HANDSET

AUDIO

J0401

INT

SPKR-

SPKR +

SPKR -

J0551

4110



INT

SPKR+

DISC

ASFIC_CMP U0221

AUDIO 

PA

U0271

OPTION

BOARD

OUT

VOLUME

ATTEN.

FILTER AND

DEEMPHASIS

MICRO 

CONTROLLER



U0101

FROM

RF

SECTION

(IF IC)

LIMITER, RECTIFIER

FILTER, COMPARATOR

SQ DET

SQUELCH

CIRCUIT

PL FILTER 

LIMITER

CH ACT

AUX RX

LS IO

U IO

AUDIO

URX OUT

J0451

EXPANSION

BOARD

DISC

AUDIO



Page 95

Controller Board Audio and Signalling Circuits 1-15

2.4.2 Audio Processing and Digital Volume Control

The receiver audio signal enters the controller section from the IF IC on DISC AUDIO. The signal is DC coupled by R0228 and enters the ASFIC CMP via the DISC pin U0221-2.

Inside the ASFIC CMP, the signal goes through 2 paths in parallel, the audio path and the PL/DPL path.

The audio path has a programmable am p lifier, whose setting is based on the channel bandwidth being received, then a LPF filter to remove any frequency components above 3000Hz and then an HPF to strip off any sub-audible data below 300Hz. Next, the recovered audio passes through a deemphasis filter if it is enabled (to compensate for Pre-emphasis which is used to red uce the effect s of FM noise). The IC then passes the audio through the 8-bit programmable attenuator whose level is set depending on the value of the volume control. Finally the filtered audio signal passes through an output buffer within the ASFIC CMP. The audio signal exits the ASFIC CMP at pin AUDIO (U0221-

41). The µP programs the attenuator, using the SPI BUS, based on the volume setting. The minimum /

maximum settings of the attenuator are set by codeplug parameters. Since sub-audible signalling is summed with voice information on transmit, it must be separated from

the voice information before processing. Any sub-audible signalling enters the ASFIC CMP from the IF IC at DISC U0221-2. Once inside it goes through the PL/DPL path. The signal first passes thro ugh one of 2 low pass filters, either PL low pass filter or DPL/LST low pass filter. Either signa l is then filtered and goes through a limiter and exits the ASFIC CMP at LSIO (U0221-18). At this point the signal will appear as a square wave version of the sub-audible signal which the radio received. The microprocessor U0101-80 will decode the signal directly to determine if it is the tone / code which is currently active on that mode.

2.4.3 Audio Amplification Speaker (+) Speaker (-)

The output of the ASFIC CMP’s digital volume pot, U02 21-41 is routed throu gh dc blocking cap acitor C0265 to a buffer formed by U0211-1. Resistors R0265 and R0268 set the correct input level to the audio P A (U0271). This is ne cessary because the gain of the audio PA is 46 dB, and the ASFIC CMP output is capable of overdriving the PA unless the maximum volume is limited. Resistor R0267 and capacitor C0267 increase frequency components below 350 Hz.

The audio then passes through R0269 and C0272 which provides AC coupling and low frequency roll-off. C0273 provides high frequency roll-off as the audio signal is routed to pins 1 and 9 of the audio power amplifier U0271.

The audio power amplifier has one inverted and one non-inverted output that produces the differential audio output SPK+ / SPK- (U0271-4/6). The inputs for each of these amplifiers are pins 1 and 9 respectively; these inputs are both tied to the received audio. The audio PA’s DC biases are not activated until the audio PA is enabled at pin 8.

The audio PA is enabled via the ASFIC CMP (U0221-38). When the base of Q0271 is low, the transistor is off and U0271-8 is high, using pull up resistor R0273, and the Audio PA is ON. The voltage at U0273-8 must be above 8.5VDC to proper ly en ab le the de vic e. If the vo ltage is betw e en

3.3 and 6.4V, the device will be active but has its input (U0273-1/9) off. This is a mute condition which is used to prevent an audio pop when the PA is enabled.

The SPK+ and SPK- outputs of the audio PA have a DC bias which varies proportionately with FLT A+ (U0271-7). FLT A+ of 11V yields a DC offset of 5V, and FLT A+ of 17V yields a DC offset of 8.5V. If either of these lines is shorted to ground, it is possible that the audio PA will be damaged. SPK+ and SPK- are routed to the accessory connector (J0501-16 and 1) and to the controlhead (connector J0401-2 and 3).

Page 96

1-16 THEORY OF OPERATION

2.4.4 Handset Audio

Certain hand held accessories have a speaker within them which require a different voltage level than that provided by U0271. For those devices HANDSET AUDIO is available at controlhead connector J0401-7.

The received audio from the output of the ASFIC CMP’s digital volume attenuator and buffered by U0211-1 is also routed to U0211-3 pin 9 where it is amplified 20 dB; this is set by the 10k/100k combination of R0261 and R0262. This signal is routed fro m the output o f the op amp U0211-3 pin 8 to J0401-7. The controlhead sends this signal directly out to the microphone jack. The maximum value of this output is 6.6Vp-p.

2.4.5 Filtered Audio and Flat Audio

The ASFIC CMP has an audio whose output at U0221-39 has been filte red and de -emphasized, but has not gone through the digital volume attenuator. From ASFIC CMP U0221-39 the signal is routed via R0251 through gate U0251-12 and AC coupled to U0211-2. The gate controlled by ASFIC CMP port GCB3 (U0221-35) selects between the filtered audio signal from the ASFIC CMP pin 39 (URXOUT) or the unfiltered (flat) audio signal from the ASFIC CMP pi n 10 (UIO). R02 51 and R0253 determine the gain of op-amp U0211-2 for the filtered audio while R0252 and R0253 determine the gain for the flat Audio. The output of U0253-7 is then routed to J0501-11 via dc blocking capacitor C0542 and R0531. Note that any volume adjustment of the signal on this path must be done by the accessory

2.4.6 RX Secure Audio (optional)

Discriminator audio, which is now encrypted audio, follows the normal receive audio pr ocessing until it emerges from the ASFIC CMP UIO pin (U0221-10), which is fed to the Secure board residing at option connector J0551-35. On the Secure board, the encrypted signal is converted back to normal audio format, and then fed back through (J0551-34) to AUX RX of the ASFIC CMP (U0221-43). From then on it follows a path identical to convention al receive audio, wher e it is filtered (0.3 - 3kHz) and de-emphasized. The signal URX SND from the ASFIC CMP (U0221-39), also routed to option connector J0551-28, is not used for the Secure board but for other option boards.

2.4.7 Option Board Receive Audio

Unfiltered audio from the ASFIC CMP pin UIO (U0221-10) enters the option board at connector J0551-35. Filtered audio from the ASFIC CMP pin URXOUT (U0221-39) enters the option board at connector J0551-28. On the option board, the signal may be processed, and then fed back through J0551-34 to AUX RX of the ASFIC CMP (U0221-43). From then on it follows a path identical to conventional receive audio, where it may be filtered (0.3 - 3kHz) and de-emphasized.

Page 97

Controller Board Audio and Signalling Circuits 1-17

2.5 RECEIVE SIGNALLING CIRCUITS

Refer to Figure 5-6 for reference for the following sections.

Figure 6-1 Receive Signalling Paths

2.5.1 Sub-audible (PL/DPL) and High Speed Data Decoder

The ASFIC CMP (U0221) is used to filter and limit all received data. The d ata enters the ASFIC CMP at input DISC (U0221-2). Inside U0221 the data is filtered according to data type (HS or LS), then it is limited to a 0-5V digital level. The MDC and trunking high speed data appear at U0221-19, where it connects to the µP U0101-82.

The low speed limited data output (PL, DPL, and trunking LS) appears at U0221-18, where it connects to the µP U0101-80.

The low speed data is read by the µP at twice the frequency of the sampling waveform; a latch configuration in the ASFIC CMP stores one bit every clock cycle. The external capacitors C0236, and C0244 set the low frequency pole for a zero crossings detector in the limiters for PL and HS data. The hysterisis of these limiters is programmed based on the type of received data.

2.5.2 Alert Tone Circuits

When the software determines that it needs to give the operator an audible feedback (for a good key press, or for a bad key press), or radio status (trunked system busy, phone call, circuit failures), it sends an alert tone to the speaker. It does so by sending SPI BUS data to U0221 which sets up the audio path to the speaker for alert tones. The alert tone itself can be generated in one of two ways: internally by the ASFIC CMP, or externally using the µP and the ASFIC CMP.

The allowable internal alert tones are 304, 608, 911, and 1823Hz. In this case a code contained within the SPI BUS load to the ASFIC CMP sets up the path and determines the tone frequency, and at what volume level to generate the tone. (It does not have to be related to the voice volume setting).

For external alert tones, the µP can generate any tone within the 100-3000Hz audio band. This is accomplished by the µP generating a square wave which enters the ASFIC CMP at U0221-19. Inside the ASFIC CMP this signal is routed to the alert tone generator.

The output of the generator is summed into the audio chain just after the RX audio de-emphasis block. Inside U0221 the tone is amplified and filtered, then passed through the 8-bit digital volume attenuator, which is typically loaded with a special value for alert tone audio. The tone exits at U0221-41 and is routed to the audio PA like receive audio.

DET AUDIO

DISCRIMINATOR AUDIO

FROM RF SECTION

(IF IC)



DISC

PLCAP2

LSIO

HSIO

 

DATA FILTER

AND DEEMPHASIS

LIMITER

FILTER

LIMITER

ASFIC_CMP

U0221

MICRO

CONTROLLER



U0101



PLCAP

Page 98

1-18 THEORY OF OPERATION

2.6 Voice Storage (optional)

The Voice Storage (VS) option can be used to store audio signals coming from the receiver or from the microphone. Any stored audio signal can be played back over the radio’ s speaker or sent out via the radio’s transmitter.

The Voice Storage option can by placed on the controller section or on an additional option board which resides on option board connector J0551. Voice Storage IC U0301 provides all required functionality and is powered from 3.3 volts regulator U0351 which,is powered from the regulated 5 volts. Dual shottky diode D0301 reduces the supply voltage for U0301 to 3 volts. The microprocessor controls U0301 via SPI bus lines CLK (U0301-8), DATA (U0301-10) and MISO (U0301-11). T o transfer dat a, th e µP first select s the U0301 via address deco der U0141 , line VS CS and U0301 pin 9. Then the µP sends data through line DATA and receives data through line MISO. Pin 2 (RAC) of U0301 indicates the end of a message row by a low state for 12.5 ms and connects to µP pin 52. A low at pin 5 (INT), which is connected to µP p in 55 indicates tha t the V oice Storage IC requires service from the µP.

Audio, either from the radio’s receiver or from one of the microphone inputs, emerges the ASFIC CMP (U0221) at pin 39, is buffered by op-amp U0341-1 and enters the Voice Storage IC U0301 at pin 25. During playback, the stored audio emerges U0301 at pin 20. To transmit the audio signal it is fed through resistive divider R0344 / R0345 and line VS MIC to input selector IC U0251. When this path is selected by the µP via ASFIC CMP port GCB 4, the audio signal enters the ASFIC CMP at pin 48 and is processed like normal transmit audio. To play the stored audio over the radio’s speaker , the audio from U0301 pin 20 is buffered by op -amp U0341-2 and fed via switch U0342 and line FLAT RX SND to ASFIC CMP pin 10 (UIO). In this case, this ASFIC CMP pin is programmed as input and feeds the audio signal through the normal receiver audio path to the spe aker or handset. Switch U0342 is controlled by the µP via ASFIC CMP port GCB 4 and feeds the stored audio only to the ASFIC CMP port UIO when it is programmed as input.

Page 99

Chapter 2

TROUBLESHOOTING CHARTS

1.0 Controller Troubleshooting Chart

Controller Check

Power Up

Alert Tone

OK?

Speaker &

Control

Head OK?

U0101

EXTAL=

7.3728 MHz/

14.7456 MHz?

BUS+

activity when volume knob

rotated?

MCU is OK

Not able to

program

RF Board ICs

Before replacing MCU, check SPI

clock, SPI data,

and RF IC select

Replace

Speaker /

Control Head

U0221 Pin 34 =

16.8 MHz?

Check

FGU

Reprogram the

correct data. &

Check ASFIC

and MCU

Check Control Head and MCU (U0101, U0121,

U0122, U0111)

Press PTT. No

RF Output

Power.

Red LED lights up?

Check

Control

Head

Check

FGU &

Transmitter

Audio

at Pin 41

U0221?

Enable External PTT

with CPS

External PTT enabled with

CPS?

Radio could

not PTT

externally

at assigned

Acc. Con.

Pin DC

changes?

Check Components

between U0221 and

U0271

Check

Connection

to uP port

PTT

YES

EXT PTT

RX AUDIO

Check

Accessories

J0501

Audio at Pin

16 &

Pin 1

Check Spk.

Flex Connection & Control Head

Audio

at Audio PA

(U0271)

input

Check ASFIC U0221

Check

Audio PA

(U0271)

Check

Receiver &

IF IC

Audio at

Pin 2

U0221?

YES

Before troubleshooting the controller section according to this chart please check the following:

1. Check tuning and CPS settings

2. Check if Alert Tones are enabled

3. Check if Control Head is OK

4. Check board visually

9.3V

DC at Pin 5

of U0641?

YES

5V DC at

Pin OUT of

U0651?

YES

Check U0641, Q0641,

Q0661, D0660 &

D0661

Check U0651, D0651,

D0621

Page 100

2-2 TROUBLESHOOTING CHARTS