LBI-38908A
ericssonz
SERVICE SECTION
ORION™
403-512 MHz
SYNTHESIZED TWO-WAY FM RADIO
TABLE OF CONTENTS
Page
DESCRIPTION ..................................................................................................................................................... 2
INITIAL MEASUREMENTS .............................................................................................................................. 2
TRANSMITTER
..................................................................................................................................... 2
RECEIVER
.............................................................................................................................................. 2
MAINTENANCE .................................................................................................................................................. 3
PREVENTATIVE
................................................................................................................................... 3
DISASSEMBLY PROCEDURES
.......................................................................................................... 4
ALIGNMENT PROCEDURES ............................................................................................................................ 7
INTRODUCTION
................................................................................................................................... 7
TRACKING DATA
................................................................................................................................. 9
TEST FREQUENCIES
........................................................................................................................... 9
SETTING TRACKING DATA
..............................................................................................................10
TRANSMITTER ALIGNMENT ..........................................................................................................................11
PA TRANSISTOR REPLACEMENT .................................................................................................................11
RECEIVER ALIGNMENT ..................................................................................................................................12
TEST EQUIPMENT REQUIRED
.........................................................................................................12
ADJUSTMENT PROCEDURES
...........................................................................................................12
SQUELCH ADJUSTMENT
...................................................................................................................13
TROUBLESHOOTING GUIDE ..........................................................................................................................13
INTRODUCTION
...................................................................................................................................13
MICROPHONICS
..................................................................................................................................13
SERVICEABLE PARTS
........................................................................................................................14
DIAGNOSTIC PROCEDURES ...........................................................................................................................16
ADDITIONAL TOOL REQUIRED
......................................................................................................17
TRANSMITTER
.....................................................................................................................................17
RECEIVER
..............................................................................................................................................18
CONTROL UNIT
....................................................................................................................................19
GENERAL
...............................................................................................................................................20
ERROR CODES
......................................................................................................................................21
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