Motorola GM950E Manual de usuario

Issue: May, 2000

GM950E/GM950i

Mobile Radio

Service Manual

6804111J39-B

http://www.myradio168.net

Cautions andWarnings

iii

CAUTION

ELECTROSTATIC SENSITIVE DEVICES

PRECAUTIONS SHOULD BE TAKEN TO MINIMIZETHE RISK OF DAMAGE BY ELEC-

TROSTATIC DISCHARGETO ELECTROSTATIC SENSITIVE DEVICES (ESDs).

ANY DEVICES EMPLOYING METAL OXIDE SILICON (MOS) TECHNOLOGY ARE

PARTICULARLY SUSCEPTIBLE.

CIRCUIT DIAGRAMS MARKED WITHTHE ABOVE SYMBOL INDICATE ELECTRONIC

CIRCUITS (PECs) FOR WHICH ESD HANDLING PRECAUTIONS ARE NECESSARY.

THE USER SHOULD REFER TO BS5783, 1984: HANDLING OF ELECTROSTATIC

SENSITIVE DEVICES. THIS BRITISH STANDARD SUPERSEDES DEF STAN 59-98,

ISSUE 2.

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Cautions andWarnings

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Cautions andWarnings

SAFETY WARNINGS

THE ELECTRICAL POWER USED IN THIS EQUIPMENT IS AT A VOLTAGE

HIGH ENOUGH TO ENDANGER LIFE.

BEFORE CARRYING OUT MAINTENANCE OR REPAIR, PERSONS

CONCERNED MUST ENSURE THAT THIS EQUIPMENT IS ISOLATED

FROM THE ELECTRICAL SUPPLY AND TESTS ARE MADE TO ENSURE

THAT ISOLATION IS COMPLETE.

WHEN THE SUPPLY CANNOT BE ISOLATED, MAINTENANCE AND

REPAIR MUST BE UNDERTAKEN BY PERSONS WHO ARE FULLY

AWARE OF THE DANGERS INVOLVED AND WHO HAVE TAKEN

ADEQUATE PRECAUTIONS TO PROTECT THEMSELVES.

COMPONENTS CONTAINING BERYLLIUM OXIDE ARE USED IN THIS

EQUIPMENT. DUST FROM THIS MATERIAL IS A HEALTH HAZARD IF

INHALED OR ALLOWED TO COME INTO CONTACT WITH THE SKIN.

GREAT CARE MUST BE TAKEN WHEN HANDLING THESE

COMPONENTS WHICH MUST NOT BE BROKEN OR SUBJECTED TO

EXCESSIVE HEATING. DEFECTIVE COMPONENTS MUST BE

DISPOSED OF IN ACCORDANCE WITH CURRENT INSTRUCTIONS.

LEAD ACID BATTERIES MAY BE FITTED AS THE STANDBY BATTERY.

CARE MUST BE TAKEN WHEN REMOVING OR INSTALLING THESE

BATTERIES TO:

1. ENSURE THAT THE TERMINALS ARE NOT SHORTED TOGETHER.

2. PREVENT SPILLAGE OF THE CORROSIVE ELECTROLYTE.

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Cautions andWarnings

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Service Manual vii

Service Manual

Contents

Chapter

1.0 Introduction

Gives a brief introduction into the manual and the service policy.

2.0 Model Chart and Accessories

Provides list of models and accessories available for the mobile radio.

3.0 Maintenance

Describes how to disassemble/assemble the radio for maintenance purposes

and gives details on safety precautions.There is also information on testing/

servicing the radio using the front panel and diagnostics test modes.

4.0 Theory Of Operation

Gives a detailed description about the operation of the radio.The information is

supplied to circuit reference detail.

5.0 Schematic Diagrams and Parts Lists

Provides component location diagrams, schematic diagrams and associated

parts lists.

6.0 216-246MHz Band Speciﬁc Information

Provides all information concerning 216-246MHz band split including

component location diagrams, schematic diagrams and associated parts lists.

Appendix

A.0 PL (CTCSS) Codes

B.0 External Device Connectors

C.0 Radio Conversions

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Contents

viii Service Manual

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Introduction 1-i

Chapter 1

Introduction

Table of Contents

Paragraph Page

1.0 Introduction................................................................................................ 1

2.0 Scope of Manual ........................................................................................ 1

3.0 How to Use This Manual............................................................................ 1

4.0 Warranty and Service Support ................................................................. 1

4.1 Waranty Period ............................................................................................ 1

4.2 After Warranty Period .................................................................................. 1

4.3 Piece Parts .................................................................................................. 2

4.4 Technical Support........................................................................................ 2

5.0 GM950E/GM950i Technical SpeciÞcation ................................................ 2

5.1 General ....................................................................................................... 2

5.2 Transmitter.................................................................................................. 3

5.3 Receiver...................................................................................................... 3

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Table of Contents

1-ii Introduction

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