Ericsson LBI-38701, Maintenance Manual

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LBI-38701
MAINTENANCE MANUAL
SERVICE SECTION
800 MHZ TRUNKED MOBILE RADIO
TABLE OF CONTENTS
Page
Description ............................................................................................................................................ 3
Initial Adjustment ................................................................................................................................. 3
Transmitter Adjustment ................................................................................................................ 3
Receiver Adjustment ..................................................................................................................... 3
Re-installation................................................................................................................................ 3
Preventative Maintenance .................................................................................................................... 3
Connections ................................................................................................................................... 3
Electrical System........................................................................................................................... 3
Mechanical Inspection .................................................................................................................. 3
Antenna .......................................................................................................................................... 3
Alignment....................................................................................................................................... 3
Frequency Check ........................................................................................................................... 3
Disassembly Procedures....................................................................................................................... 3
To Remove Top Cover.................................................................................................................. 4
To Remove Bottom Cover ............................................................................................................ 4
To Remove The Duplexer Assembly........................................................................................... 4
To Remove The RF Board............................................................................................................ 4
To Remove The Audio Board ...................................................................................................... 5
To Remove The Front Cap Assembly ......................................................................................... 5
To Remove The Logic Board ....................................................................................................... 5
To Remove The Duplexer/Interface Board ................................................................................. 7
To Remove The System Board .................................................................................................... 7
To Remove The Handset Interface Board ................................................................................... 7
Chip Component Replacement ............................................................................................................ 7
To Remove Chip Components ..................................................................................................... 7
To Replace Chip Components...................................................................................................... 7
Troubleshooting Procedures ................................................................................................................ 8
Self Diagnostics/Error Messages ................................................................................................. 8
Test Preparation .................................................................................................................................... 11
Test Mode Commands.......................................................................................................................... 11
Default Conditions ........................................................................................................................ 11
Channel Frequency Select ............................................................................................................ 11
Test Mode Commands and Functions................................................................................................. 11
Single Key Tests............................................................................................................................ 12
Three Key Function Tests............................................................................................................. 14
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