Motorola RADIUS GM300 Manual de servicio

GM300 Mobile Radios 136-162 MHz146-174 MHz403-433 MHz438-470 MHz465-495 MHz490-520 MHz Service Manual6880902Z32-A

March, 1997 68 No. vii Name of Manual Foreword Model Charts GM300VHF Mobile Radio146 - 174 MHz25 - 45 Watts RF Power Item Description X HUD3931_ Chas

viii 68 No. March, 1997 Foreword Name of ManualModel Charts GM300UHF Mobile Radio403 - 433 MHz1 - 10 Watts RF Power Item Description X HUE3944_ Chass

March, 1997 68 No. ixName of Manual Foreword Model ChartsGM300UHF Mobile Radio403 - 433 MHz25 - 40 Watts RF PowerItem DescriptionX HUE3812_ Chassis, 1

x 68 No. March, 1997Foreword Name of ManualModel ChartsGM300UHF Mobile Radio438 - 470 MHz1 - 10 Watts RF PowerItem DescriptionX HUE3816_ Chassis, 12.5

March, 1997 68 No. xiName of Manual Foreword Model ChartsGM300UHF Mobile Radio438 - 470 MHz10 - 25 Watts RF PowerItem DescriptionX HUE3820_ Chassis, 1

xii 68 No. March, 1997Foreword Name of ManualModel ChartsGM300UHF Mobile Radio438 - 470 MHz25 - 40 Watts RF PowerItem DescriptionX HUE3918_ Chassis, 1

March, 1997 68 No. xiiiName of Manual Foreword Model ChartsGM300UHF Mobile Radio465 - 495 MHz25 - 40 Watts RF PowerItem DescriptionX HUE3842_ Chassis,

xiv 68 No. March, 1997Foreword Name of ManualModel ChartsGM300UHF Mobile Radio490 - 520 MHz25 - 35 Watts RF PowerItem DescriptionX HUE3838_ Chassis, 1

March, 1997 68 No. xvName of Manual Foreword AccessoriesAccessoriesRadius offers many accessories to increase communications efÞciency. Some of the ac

xvi 68 No. March, 1997Foreword Name of ManualAccessoriesAccessories / Kits Interfacing with the 16 Pin Connector:HKN9327_R Ignition switch cableHSN814

 Motorola,. All Rights ReservedPrinted In U.S.A. 1997 68 No. i Table of Contents Scope of Manual . . . . . . . . . . . . . . . . . . . . . . . . . .

March, 1997 68 No. xviiName of Manual Foreword SpecificationsSpecificationsGENERALTRANSMITTEROPTIONAL SIGNALLING FEATURESWITH RAPIDCALL PACKAGEAvailabl

xviii 68 No. March, 1997Foreword Name of ManualSpecifications

March, 1997 68 No. 1-1 Radio Disassembly / Re-assembly Section 1Disassembly/Re-assembly Radio Disassembly and Assembly To Remove Control Head & C

1-2 68 No. March, 1997 Disassembly/Re-assembly Name of ManualRadio Disassembly and Assembly 2. After removing the RF shield, remove all RFboard moun

March, 1997 68 No. 1-3 Name of Manual Disassembly/Re-assembly Radio Disassembly and AssemblyFigure 1-8. Table 1-1. Fasteners, Tools and Torques Part

1-4 68 No. March, 1997 Disassembly/Re-assembly Name of ManualAlignment Alignment The advanced design and manufacturing procedureseliminate the need f

March, 1997 68 No. 2-1 Theory of Operation RF Board VHF Receiver Front End, 146-174 MHz The received signal applied to the radioÕs antennainput conne

2-2 68 No. March, 1997 Theory of Operation Name of ManualRF Board Again, image attenuation increases for frequencieslower than f IMAGE . A pin diode

March, 1997 68 No. 2-3 Name of Manual Theory of Operation RF Board In UHF radios, for example, the latches are loaded withdata to give 5 kHz (or 6.25

2-4 68 No. March, 1997 Theory of Operation Name of ManualRF BoardFigure 2-2. Synthesizer Section Block Diagram

ii 68 No. March, 1997 Table of Contents Name of Manual Transmitter Power Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

March, 1997 68 No. 2-5 Name of Manual Theory of Operation RF Board phase detector A is applied to phase detector B. Thereare two output signals for p

2-6 68 No. March, 1997 Theory of Operation Name of ManualLogic Board the logic board. Q277 conducts to supply TX 8.5V, andQ278 saturates across the b

March, 1997 68 No. 2-7 Name of Manual Theory of Operation Logic Board off switch in this case. However, in 4-layer boards Q403is a TMOS device, which

2-8 68 No. March, 1997 Theory of Operation Name of ManualLogic Board The microcomputer puts the address information onAD0-AD7 and the information is

March, 1997 68 No. 2-9 Name of Manual Theory of Operation Logic Board Data Path Receiver audio is also used for decoding of signalingtones or codes.

2-10 68 No. March, 1997 Theory of Operation Name of ManualRF Power Amplifiers Transmitter Power Control Control Line Functions As discussed earlier,

March, 1997 68 No. 2-11 Name of Manual Theory of Operation RF Power Amplifiers impedance of CR2251 appears as a high impedance atthe junction of CR22

2-12 68 No. March, 1997 Theory of Operation Name of ManualRF Power Amplifiers The third stage, Q2530, is the Class C RF Þnal powerampliÞer. It provid

March, 1997 68 No. 2-13 Name of Manual Theory of Operation Front Panel Boards with the internal ÒonÓ inductance of CR2751, form aseries resonant circ

2-14 68 No. March, 1997 Theory of Operation Name of ManualFront Panel Boards Vol/Mic Board The VOL/MIC circuit board provides mounting andelectrical

March, 1997 68 No. iii Name of Manual Table of Contents Circuit Board Details and Schematic for HLE8385AUHF Power Amplifier, 403-433 MHz, 1-10 Watts

March, 1997 68 No. 3-1 Section 3Jumper-Selectable Options Overview Push-on jumpers, located on the logic board, allow the operation of the radio to b

3-2 68 No. March, 1997 Jumper-Selectable Options Name of ManualJumper Positions

March, 1997 68 No. 4-1 Section 4Non-Field Servicable Components Overview This section explains the operation of the reference oscillator and lists al

4-2 68 No. March, 1997 Non-Field Servicable Components Name of ManualNon-Field Servicable Components Ref. No. Part No. Description Location__________

Parts List HLE8230A RF Board, 403-433 MHz, 12.5 kHz (N) HLE8229A RF Board, 403-433 MHz, 25 kHz (W) PL-921021-O REFERENCE MOTOROLA SYMBOL PART NO. DES

HLE8230A RF Board, 403-433 MHz, 12.5 kHz (N) HLE8229A RF Board, 403-433 MHz, 25 kHz (W) PL-921021-O REFERENCE MOTOROLA SYMBOL PART NO. DESCRIPTION HL

HLE8230A RF Board, 403-433 MHz, 12.5 kHz (N) HLE8229A RF Board, 403-433 MHz, 25 kHz (W) PL-921021-O REFERENCE MOTOROLA SYMBOL PART NO. DESCRIPTION HL

Parts List HLE8275A PA Board, 403-433 MHz, 25/40 Watt PL-921030-O REFERENCE MOTOROLA SYMBOL PART NO. DESCRIPTION HLE8275A PA Board, 403-433 MHz, 25/4

Parts List HLN8277A PA Hardware Kit 403-433 MHz, 25/40 Watt PL-921031-O REFERENCE MOTOROLA SYMBOL PART NO. DESCRIPTIONcapacitor, chip: C2741 21-11078

MotorolaRadius DivisionHwy 34, West.Mt. Pleasant, IA 52641 6880902Z32-A

iv 68 No. March, 1997 Table of Contents Name of Manual

March, 1997 68 No. iii lForeword Scope of Manual Scope of Manual This manual is intended for use by experienced techni-cians familiar with similar ty

iv 68 No. March, 1997 ForewordModel Charts Model Charts GM300VHF Mobile Radio136 - 162 MHz10 - 25 Watts RF Power Item Description X HUD3834_ Chassis,

March, 1997 68 No. v Name of Manual Foreword Model Charts GM300VHF Mobile Radio146 - 174 MHz1 - 10 Watts RF Power Item Description X HUD3794_ Chassis

vi 68 No. March, 1997 Foreword Name of ManualModel Charts GM300VHF Mobile Radio146 - 174 MHz10 - 25 Watts RF Power Item Description X HUD3409_ Chassi