Motorola GM398 Manuel de service

June, 2002GM338/GM398Mobile RadiosBasic Service Manual6804112J17-D

1-2 Warranty and Service Support2.3 Piece Parts AvailabilitySome replacement parts, spare parts, and/or product information can be ordered directly. I

1-3 Radio Model Information3.0 Radio Model InformationThe model number and serial number are located on a label attached to the back of your radio. Yo

1-4 Radio Model InformationTHIS PAGE INTENTIONALLY LEFT BLANK

2-1Section 2MAINTENANCE1.0 IntroductionThis chapter provides details about the following:• Preventive maintenance (inspection and cleaning).• Safe han

2-2 Safe Handling of CMOS and LDMOS DevicesCleaning Internal Circuit Boards and ComponentsIsopropyl alcohol (70%) may be applied with a stiff, non-met

Repair Procedures and Techniques — General 2-34.0 Repair Procedures and Techniques — GeneralParts Replacement and SubstitutionWhen damaged parts are r

2-4 Radio Disassembly - Detailed6.0 Radio Disassembly - DetailedThe procedure to remove and replace a Control Head, Top Cover or Transceiver Board is

Radio Disassembly - Detailed 2-5Figure 2-2 Flexible Connection Removal4. Remove the flexible connection from the socket on the control head board.6.2

2-6 Radio Disassembly - Detailed6.3 Transceiver Board Removal1. Remove six screws from the diecast cover using the T20 TORX™ driver as shown inFigure

Radio Disassembly - Detailed 2-76.4 Disassembly of Control Heads1. To dismount the control head housing from the back housing, insert the dismantling

Computer Software CopyrightsThe Motorola products described in this manual may include copyrighted Motorola computer programs storedin semiconductor m

2-8 Radio Disassembly - Detailed4. Remove the board from the control head housing by stretching the control head housing andpulling up on the board as

Radio Assembly 2-97.0 Radio Assembly7.1 Control Heads - GM338 and GM3981. On the GM338 only, locate the display in the control head ensuring that the

2-10 Radio Exploded Mechanical Views and Parts Lists8.0 Radio Exploded Mechanical Views and Parts Lists8.1 Radio AssemblyFigure 2-10 Radio AssemblyIte

Radio Exploded Mechanical Views and Parts Lists 2-118.2 Control Head - GM338Figure 2-11 Control Head - GM338Item no Description Part No.1 Housing Fron

2-12 Radio Exploded Mechanical Views and Parts Lists8.3 Control Head - GM398Figure 2-12 Control Head - GM398Item No Description Part No1 Housing Front

Service Aids 2-139.0 Service AidsTable 2-1 lists the service aids recommended for working on the radio. While all of these items areavailable from Mot

2-14 Test Equipment10.0 Test EquipmentTable 2-2 lists test equipment required to service the radio and other two-way radios.Table 2-2 Recommended Test

Programming/Test Cable - RKN4083_ 2-1511.0 Programming/Test Cable - RKN4083_Figure 2-13 Programming/Test CableFigure 2-14 Pin Configuration of the Sid

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3-1Section 3TRANSCEIVER PERFORMANCE TESTING1.0 GeneralThese radios meet published specifications through their manufacturing process by utilizing high

iSAFETY INFORMATIONSAFETY AND GENERAL INFORMATIONInformation and Instructions on RF Energy Exposure and Product SafetyREAD THIS IMPORTANT INFORMATION

3-2 RF Test Mode3.0 RF Test ModeWhen the radio is operating in its normal environment, the radio’s microcontroller controls the RFchannel selection, t

RF Test Mode 3-3Table 3-2 Test EnvironmentsNo. ofBeepsDescription Function1(highpitch)Carrier Squelch(CSQ)RX: unsquelch if carrier detectedTX: mic aud

3-4 RF Test ModeTable 3-4 Test FrequenciesTestModeTestChannelLowPowerTestChannelHighPowerLowBandRange 129.7-36MHzLowBandRange 236-42MHzLowBandRange 34

RF Test Mode 3-5* See 3-4** MPTTable 3-5 Transmitter Performance ChecksTest NameCommunicationsAnalyzerRadio Test Set CommentReferenceFrequencyMode: PW

3-6 RF Test Mode* See 3-4Table 3-6 Receiver Performance ChecksTest NameCommunicationsAnalyzerRadio Test Set CommentReferenceFrequencyMode: PWR MON4th

4-1Section 4RADIO TUNING AND PROGRAMMING1.0 IntroductionThis chapter provides an overview of the Customer Programming Software (CPS) and tunerprogram

4-2 CPS Programming SetupFigure 4-2 CPS Programming Setup Cable with Internal RIBFigure 4-3 CPS Programming Setup Cable with Internal RIB and Rear Ada

Radio Tuning Setup 4-33.0 Radio Tuning SetupA personal computer (PC), Windows 95/98 and a tuner program are required to tune the radio. Toperform the

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5-1Section 5POWER UP SELF-TEST1.0 Error CodesTurning on the radio starts a self-test routine that checks the radio functionality. If the checks aresuc

ii SAFETY INFORMATIONTable 1 lists the minimum lateral distance for bystanders in an uncontrolled environment from thetransmitting antenna at several

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6-1Section 6MODEL CHART AND TEST SPECIFICATION1.0 Low Power Radios1.1 Model Chart (VHF 136-174 MHz)GM Series, VHF 136-174 MHzModel DescriptionAZM25KHF

6-2 Low Power Radios1.2 Model Chart (UHF Band 1, 403-470 MHz)GM Series, UHF Band 1, 403-470 MHzModel DescriptionAZM25RHF9AA5 GM338 403-470 MHz 1-25WAZ

Low Power Radios 6-31.3 Model Chart (UHF Band 2, 450-527 MHz)1.4 Model Chart (Low Band, 29.7-50.0 MHz)GM Series, UHF Band 2, 450-527 MHzModel Descript

6-4 Low Power Radios1.5 SpecificationsGeneralSpecification VHF UHF1 UHF2 LOW BANDFrequency Range: 136-174 MHz 403-470 MHz 450-527 MHz Low Band 1 (29.7

Low Power Radios 6-5TransmitterSpecification VHF UHF1 UHF2 LOW BANDModulation Limiting: ±2.5 kHz @ 12.5 kHz±4.0 kHz @ 20 kHz±5.0 kHz @ 25 kHz±2.5 kHz

6-6 High Power Radios2.0 High Power Radios2.1 Model Chart (VHF 136-174 MHz)2.2 Model Chart (UHF Band 1, 403-470 MHz)GM Series, VHF 136-174 MHzModel De

High Power Radios 6-72.3 Model Chart (UHF Band 2, 450-520 MHz)2.4 Model Chart (UHF Band 1, LDMOS, 403-470 MHz)GM Series, UHF Band 2, 450-520 MHzModel

6-8 High Power Radios2.5 Model Chart (UHF Band 2, LDMOS, 450-520 MHz)GM Series, UHF Band 2, 450-520 MHzModel DescriptionAZM25SKF9AA5 GM338 450-520 MHz

High Power Radios 6-92.6 SpecificationsGeneralSpecification VHF UHF1 UHF2Frequency Range: 136-174 MHz 403-470 MHz 450-520 MHzFrequency Stability(-30°C

SAFETY INFORMATION iiiFacilitiesTo avoid electromagnetic interference and/or compatibility conflicts, turn off your radio in any facilitywhere posted

6-10 High Power RadiosTransmitterSpecification VHF UHF1 UHF2Modulation Limiting: ±2.5 kHz @ 12.5 kHz±4.0 kHz @ 20 kHz±5.0 kHz @ 25 kHzFM Hum and Noise

G-1GLOSSARY OF TERMSTerm DefinitionALC Automatic Level Control: a circuit in the transmit RF path that controls RFpower amplifier output, provides lev

G-2 GlossaryOMPAC Over-Molded Pad-Array Carrier: a Motorola custom package, distinguished bythe presence of solder balls on the bottom pads.OSW Outbou

Glossary G-3µC Microcontroller.UHF Ultra High Frequency.µP Microprocessor.VCO Voltage-Controlled Oscillator: an oscillator whereby the frequency of os

G-4 GlossaryNotes

Technical Information UpdatesAs we continue to make engineering enhancements to our products, the information in ourService Manuals need to be updated

Service Manual Feedback FormWe believe that reports from users provide valuable information for producing quality manuals.Kindly take a few moments to

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vTable of ContentsSection 1 Introduction1.0 Scope of Manual...

viSection4 RadioTuningandProgramming1.0 Introduction.......

1-1Section 1INTRODUCTION1.0 Scope of ManualThis manual is intended for use by service technicians familiar with similar types of equipment. Itcontains