Harman Kardon AVR 255 Service Manual

harman/kardon Service Manual
AVR 255/230
7 x 50W 7.1 CHANNEL A/V RECEIVER
CONTENTS
ESD WARNING 2
BASIC SPECIFICATIONS 3
TROUBLESHOOTING GUIDE 4
PROCESSOR RESET 4
REMOTE RESET 5
PACKAGE LIST AND PARTS 6
DISASSEMBLY 7
EXPLODED VIEW AND PARTS 8
ELECTRICAL PARTS LIST 9
SEMICONDUCTOR PINOUTS 50
PCB DRAWINGS 121
BLOCK DIAGRAM 129
WIRING DIAGRAM 130
AMP BIAS ADJUSTMENT 131
SCHEMATIC DIAGRAMS 132
Released EU2008 harman/kardon, Inc. Rev 0, 07/2008
250 Crossways Park Dr.
Woodbury, New York, 11797
harman/kardon
AVR 255/230 Service Manual
Page 1 of 144

Harman Kardon AVR 255 Specifications

General

Impedance	8 Ω
Frequency range	20 - 20000 Hz
Audio output channels	7.1 channels
Signal-to-Noise Ratio (SNR)	100 dB
Total Harmonic Distortion (THD)	0.07 %
HDMI	Yes
Audio system	Dolby Digital
Dimensions (WxDxH)	440 x 351 x 151 mm
Power requirements	2 x 65 W
HDMI ports quantity	3
Output power description	192 kHz
S-Video inputs quantity	1
Component video (YPbPr/YCbCr) in	4
Headphone connectivity	-
Product color	Black, Silver

Weight and Dimensions

Weight	13600 g