LBI-39175A
ericssonzSERVICE 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