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LBI-39175A
ericssonz
SERVICE SECTION
ORION™
136-174 MHz Dual Bandwidth
SYNTHESIZED TWO-WAY FM RADIO
TABLE OF CONTENTS
Page
DESCRIPTION ........................................................................................................................... 2
INITIAL MEASUREMENTS ..................................................................................................... 2
TRANSMITTER ........................................................................................................... 2
RECEIVER.................................................................................................................... 2
MAINTENANCE ........................................................................................................................ 3
PREVENTIVE MAINTENANCE ................................................................................ 3
DISASSEMBLY PROCEDURE................................................................................... 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 ..................................................................................................15
ADDITIONAL TOOLS REQUIRED............................................................................16
ERROR CODES............................................................................................................19