Harman Kardon HK-3470 Schematic

harman/kardon

hk3370/3470

STEREO RECEIVER

PRELIMINARY

SERVICE MANUAL

ESD WARNING……………………..…….…….2

LEAKAGE TESTING………………..…….…....3

BASIC SPECIFICATIONS hk3370………..…..4
BASIC SPECIFICATIONS hk3470………..…..5
FRONT PANEL CONTROLS hk3370.….…….6
REAR PANEL CONNECTIONS hk3370…..…8
REMOTE CONTROL FUNCTIONS HK3370..10
FRONT PANEL CONTROLS hk3470.……….12
REAR PANEL CONNECTIONS hk3470…..…15
REMOTE CONTROL FUNCTIONS HK3470..17

TROUBLESHOOTING GUIDE…...….….....…19

ALIGNMENT PROCEDURES…………….…..20
WAVEFORMS……………………………..…..23

harman/kardon, Inc.

250 Crossways Park Dr.

Woodbury, New York 11797

CONTENTS

BLOCK DIAGRAM…………..………………28
EXPLODED VIEW HK3370………….……..29
EXPLODED VIEW HK3470…….……...…..30
DISASSEMBLY PROCEDURES…………..31
MECHANICAL PARTS LIST HK3370.……39
ELECTRICAL PARTS LIST HK3370.….…40
MECHANICAL PARTS LIST HK3370.……57
ELECTRICAL PARTS LIST HK3370.….…58
IC DESCRIPTIONS………………….……..75
PCB DRAWINGS……………………...……86
SCHEMATICS………………….……………92
WIRING DIAGRAM………………………...103
PACKAGE………………….………………..104

SCHEMATIC DIAGRAM

78

95

MAIN

HK3470

SCHEMATIC DIAGRAM

98

AMP/TONE/ETC.

POWER AMP

TONE

POWER LED

VR/LED

POWER SW

SCHEMATIC DIAGRAM

80

99

FRONT

HK3370 / HK3470

SCHEMATIC DIAGRAM

102

TUNER/VR/HP

HK 3370 / HK 3470

TUNER

HEAD PHONE

12. WIRING DIAGRAM

82

103

HK 3370 / HK 3470