Harman kardon hk 680 service manual

Page 1

The Harman Kardon
Model HK680
INTEGRATED AMPLIFIER

Manual 199A

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0: International model

The following marks found in the parts list of this manual
identify the models as follows.

[3: International model Black version

CONTENTS
SPECIFICATIONS ............................ ELECTRICAL PARTS LIST
POWER CORD REPLACEMENT. ...2 SCHEMATIC DIAGRAMS.
DISASSEMBLY PROCEDURES .. ...3 WIRING DIAGRAM ...............
CONTROLS AND FUNCTIONS .. 4 PH600 PHONO P.C. BOARD OPTION
ALIGNMENT PROCEDURES ...5 HOW TO INSTALL .....
BLOCK DIAGRAM ...5 GENERAL UNIT AND
GENERAL UNIT PAR .. ...6 P. C. BOARDS
GENERAL UNIT EXPLODED VIEW ...7 WIRING DIAGRAM
P. C. BOARDS .............. ...8 SCHEMATIC DIAGRAM
lC BLOCK DIAGRAM 1 ELECTRICAL PARTS LIST

harman/kardon

Parts and Service Office

80 Crossways Park West,Woodbury.N.Y. 11797

1112-HK680A 69502 300 Printed in Japan

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HK680 _\

SPECIFICATIONS
Nominll Limit
HMS Output Power
8 fl, lkHz THD 0.1% 96.5w 2 85W

4 Q, 1kHz THD 0.3%
Highinstantaneous Current
Capability (HCC)
Half Power Bandwidth

14779W 2 120W

76.0A 2 70A

(THD 0.1%) <10Hz-98kHz <10Hz-80kHz
Frequency Response
(at ~3dB down) 0.25Hz-248kHz <1HZ-2200kHz
Input Sensitivity (at 85W output)
Tuner/CD: 140mV >140mVi25mV/20Idhtakfl
Option Phono (MM): 2.4mV/49kohm
Option Phono (MC): 131uV/56I)

Signal to Noise Ratio
Tuner/CD:
Option Phono (MM):
Option Phono (MC):
Channel Separation (at 10kHz)

82.6dB 2 74dB
79dB
75dB

69.8dB Z SOdB
Option Phono (MM): 65dB
Option Phono (MC): 65dB

IM Distortion Ratio (at 1W) 0.042% S 017:

Damping Factor (at 1kHz) 64.2 2 60
Phone-Overload

Option Phono (MM): 109mV

Option Phuno (MC): 5.6mv
POWER CORD REPLACEMENT

Nominal lelt
Tone Control Characterimics
Bass (at 50Hz)
Boost 10dB 1: NB
Cut 10dB t 2dB
Treble (at IokHz) -
Boost was :I: 2115 Q
Cut 10GB 1 MB
DC Output Voltage (at 80)
L channel OmV 1 GOmV
R channel OmV i GOmV
Idling Current (at 80) 50.0mA 50mA15mA
Dimensions 17.4 x 5.3" x160"
[W x H x D) (443 x134 x 406 mm)
Weight 27.3Ibs. / 12.4kg
Power Supply AC 230V. 50/60Hz

Power Consumption 300W
The» specifications are service target specs.

Specifications and component: are subject to change without notice.
Overall performance will be maintained or improved.

In order to prevent fire or shock hazard when replacing the power cord, follow the procedure below to replace

the parts with the standard supply parts.

BROWN LEAD

POWER SUPPLY
P.C.BOARD

a

PG1
POWER CORD

Vfie

HOLDER

170mm I
PG1 ( E
4»- \
¥
IS: F l Wm
10mm

Heat shrinkable tube