harman/kardon
AVR125
A/V DOLBY DIGITAL RECEIVER
SERVICE MANUAL
CONTENTS
ESD WARNING………………………….…….2
LEAKAGE TESTING……………….....……....3
BASIC SPECIFICATIONS…………….….…..4
FRONT PANEL CONTROLS………………...5
FRONT PANEL DISPLAY…………………….7
REAR PANEL CONNECTIONS……..….……9
REMOTE CONTROL FUNCTIONS……..…..11
INSTALLATION AND CONNECTIONS….....14
TROUBLESHOOTING GUIDE…………..….16
MICROPROCESSOR RESET……….…..….16
UNIT EXPLODED VIEW………….…..……..17
DISASSEMBLY PROCEDURE..………….18
AMPLIFIER BIAS ADJUSTMENT……...…21
BLOCK DIAGRAM………………………….22
IC PINOUTS……………………………..….23
TRANSISTOR PINOUTS………..…..…….52
ELECTRICAL PARTS LIST………..…..….53
PCB DRAWINGS……………………..……62
SCHEMATICS…………………………...…70
WIRING DIAGRAM..……………………….82
PACKAGING………..…………………...…83
harman/kardon, Inc.
250 Crossways Park Dr.
Woodbury, New York 11797
Rev
5
2
/200
5
