harman/kardon
AVR 7550HD
7 X 105W 7.1 CHANNEL A/V RECEIVER
SERVICE MANUAL
CONTENTS
ESD WARNING……………………………….2
LEAKAGE TESTING……………….…..…....3
BASIC SPECIFICATIONS…………………..4
PACKAGING………………………..………..5
FRONT PANEL CONTROLS………..…..…..6
REAR PANEL CONNECTIONS………….…8
REMOTE CONTROL FUNCTIONS.………11
CONNECTIONS………………………….…14
OPERATION………………………...………22
TROUBLESHOOTING GUIDE…...……..…29
PROCESSOR RESET……………….….…..30
UNIT EXPLODED VIEW……………………..31
EXPLODED VIEW PARTS LIST……………32
AMP BIAS ADJUSTMENT………………….34
BLOCK DIAGRAM…………………….……..37
ELECTRICAL PARTS LIST……….……..…40
PCB DRAWINGS…………………….…….106
SEMICONDUCTOR PINOUTS……………124
SCHEMATICS………………………………162
WIRING DIAGRAM.....................................186
harman/kardon, Inc.
250 Crossways Park Dr.
Released 2009 Woodbury, New York 11797 Rev0 1/2010
Discontinued XXXX
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