Motorola GM950E User manual

Issue: May, 2000
GM950E/GM950i
Mobile Radio
Service Manual
6804111J39-B
http://www.myradio168.net

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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
v
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
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
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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