Motorola GP1280 Service Manual

Professional RadioGP1280Basic Service Manual68P64115B27AIssue: June 2000

1-4 INTRODUCTION3.0 Radio Model InformationThe model number and serial number are located on a label attached to the back of your radio. Youcan determ

Chapter 2INTRINSICALLY SAFE RADIO INFORMATION1.0 FMRC Approved EquipmentAnyone intending to use a radio in a location where hazardous concentrations o

2-2 INTRINSICALLY SAFE RADIO INFORMATION2.0 Repair of FMRC Approved ProductsREPAIRS FOR MOTOROLA FMRC APPROVED PRODUCTS ARE THE RESPONSIBILITY OFTHE U

Repair of FMRC Approved Products 2-32.3 Do Not Substitute Options or AccessoriesThe Motorola communications equipment certified by Factory Mutual is t

2-4 INTRINSICALLY SAFE RADIO INFORMATION

Chapter 3MAINTENANCE1.0 IntroductionThis chapter provides details about the following:Preventive maintenance (inspection and cleaning).Safe handling o

3-2 MAINTENANCECleaning Internal Circuit Boards and ComponentsIsopropyl alcohol (70%) may be applied with a stiff, non-metallic, short-bristled brush

Repair Procedures and Techniques — General 3-34.0 Repair Procedures and Techniques — GeneralParts Replacement and SubstitutionWhen damaged parts are r

3-4 MAINTENANCEIf a unit requires more complete testing or service than is customarily performed at the basic level,send this unit to a Motorola Autho

Radio Disassembly — Detailed 3-54. Pull the volume and channel selector knobs off of their shafts.5. Separate the chassis from the internal electronic

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

3-6 MAINTENANCE6. Lay the chassis down. Rotate the front cover backward and slightly away from the chassis.7. Lift the latches on the main circuit boa

Radio Disassembly — Detailed 3-76.3 Keypad, Display, and Keypad/Option Board Disassembly1. If the disassembly of the keypad, the keypad printed circui

3-8 MAINTENANCE7. The keypad/option board, and the keypad, can be removed without the use of tools.6.4 Speaker, Microphone, and Universal Connector Fl

Radio Disassembly — Detailed 3-96. After the universal connector tail of the speaker-microphone assembly is removed, theassembly can be completely rem

3-10 MAINTENANCE6.6 Control Top Disassembly1. To remove the control top assembly, place a screwdriver next to the antenna boss, and pry itagainst the

Radio Reassembly — Detailed 3-114. Re-insert the microphone and boot into the pocket in the front cover.5. Lay the speaker-microphone flex on top of k

3-12 MAINTENANCE5. Push the chassis assembly completely into the top of the front cover until it settles in place.6. Be sure the O-ring is properly se

Option Board Installation 3-136. Reassemble the option board to the front cover assembly.7. Insert the display flex circuit into the connector on the

3-14 MAINTENANCE9.0 Mechanical View and Parts List9.1 GP1280 Exploded View and Parts ListFigure 3-13 GP1280 Radio Exploded View12345678910111213141516

Mechanical View and Parts List 3-15ItemMotorolaPartNumberDescription1 See Chapter 6 Antenna2 3280529Z01 Knob, Volume3 3280530Z01 Knob, Frequency4 1380

iiiSAFETY INFORMATIONRead this information before using your radio.SAFE AND EFFICIENT OPERATION OF MOTOROLA TWO-WAY RADIOSThis document provides infor

3-16 MAINTENANCE10.0 Service AidsTable 3-1 lists the service aids recommended for working on the GP1280 Radio. While all of theseitems are available f

Test Equipment 3-1711.0 Test EquipmentTable 3-2 lists test equipment required to service the GP1280 Radio and other two-way radios.Table 3-2 Recommend

3-18 MAINTENANCE12.0 Programming/Test CableFigure 3-14 Programming/Test CableFigure 3-15 Pin Configuration of the Side ConnectorSideConnector1metreCab

Programming/Test Cable 3-19Figure 3-16 Wiring of the Connectors1234567891011121315141125 Pos FemaleD Connector25 Pos Male DConnectorSide Connector1527

3-20 MAINTENANCE

Chapter 4PERFORMANCE TESTING1.0 IntroductionThe receiver and transmitter performance tests are contained in Tables 4-1 and 4-2 respectively.Refer to C

4-2 PERFORMANCE TESTING3.0 Transmitter Performance TestsThe transmitter performance tests are described in Table 4-2 below.Table 4-2 Transmitter Perfo

Chapter 5RADIO TUNING AND PROGRAMMING1.0 IntroductionThis chapter provides an overview of the Customer Programming Software (CPS) and tuner programwhi

5-2 RADIO TUNING AND PROGRAMMING2.1 Initial Test Equipment SetupThe supply voltage is connected to the radio using a Motorola battery eliminator, P/N

Chapter 6MODEL CHART AND TEST SPECIFICATION1.0 Model ChartProfessional GP1280 RadioModel DescriptionMDH25KDN9CK8_E GP1280 VHF 136-174 MHz 5W 1-ChMDH25

iv SAFETY INFORMATIONOPERATIONAL WARNINGSVehicles with an air bagPotentially explosive atmospheresBatteriesBlasting caps and areasOPERATIONAL CAUTIONS

6-2 MODEL CHART AND TEST SPECIFICATION2.0 Specifications - Professional GP1280 RadioData is specified for +25°C unless otherwise stated.General Specif

Specifications - Professional GP1280 Radio 6-3*Availability subject to the laws and regulations of individual countries.Transmitter*Frequencies - Full

6-4 MODEL CHART AND TEST SPECIFICATION

Chapter 7POWER UP SELF-TEST1.0 Error CodesTurning on the radio starts a self-test routine that checks the radio functionality. If the checks aresucces

7-2 POWER UP SELF-TEST

vTable of ContentsChapter 1 INTRODUCTION1.0 Scope of Manual...

vi8.0 Option Board Installation ...3-129.0 Mechanical View and Parts L

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

1-2 INTRODUCTION2.3 European Radio Support Centre (ERSC)The ERSC Customer Information Desk is available through the following service numbers:Austria:

Warranty and Service Support 1-32.5 Technical SupportMotorola Product Services is available to assist the dealer/distributors in resolving any malfunc