Harman kardon hk 620 amp

Page 1

The Harman Kardon

Model HK620

INTEGRATED AMPLIFIER

Teflhmficeafl HIV/Hamel

harman/kardon IIK EZII

76 db 0 m. L

I:
[:1

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

G19 : North America area model Black version

13: International model Black version

o : International model

® : Asia/Oceania model Black version

SPECIFICATIONS ~~~~~~~~~~~~~~~~~~
DISASSEMBLY PROCEDURES
CONTROLS AND FUNCTION$~
ALIGNMENT PROCEDURES-~-
BLOCK DIAGRAM-- -
GENERAL UNIT- ---------
GENERAL UNIT PARTS LIST
p_ c_ BOARDS _________________________________
ELECTRICAL PARTS L|ST«~
WIRING DIAGRAM ----------------
IC TERMINAL FUNCTION-

CONTENTS

IC BLOCK DIAGRAM - 13
INFRARED REMOTE CONTROL

SCHEMATIC DIAGRAMw - ~-13
SCHEMATIC DIAGRAM» - I4
PH600 PHONO P.C.BOARD OPTION

HOW TO INSTALL - l7

GENERAL UNIT PARTS LIST--
P. C. BOARD~ ...............
WIRING DIAGRAM--
SCHEMATIC DIAGRAM*
ELECTRICAL PARTS LIST ~~~~~~~~~~~

harman/kardon

Parts and Service Office

Manual 191A

80 Crossways Park West, Woodbury, NY. 11797
1112-HK620-A K9502 1500 Printed in Japan

Page 2

HK620 :

SPECIFICATIONS
Nominal Limit
RMS Output Power
5 £2, 1kHz THD 0.1% 50.7w g 40W
4 S2, 1kHz THD 0.3% 59.4w ; 60W
High-instantaneous Current
Capability (HCC) 41A 2 30A

Half Power Bandwidth (THD 0.1%)

<10Hz-62kHz <1OHz-50kHz

Frequency Response

(at -3dB down)

0.4HZ-106kHz

Input Sensitivity

(at 40W output) Tuner/CD:
Option Phono (MM):
Option Phono (MC):

2.4mV/49kohm
131 [AV/569

Signal to Noise Ratio

Tuner/CD: 86.5dB ; 75dB
Option Phono (MM): 79dB
Option Phono (MC): 75dB
Channel Separation (at 10kHz): 56.6dB Z 45dB
Option Phono (MM): 65dB
Option Phono (MC): e5dB
IM Distortion Ratio (at 1W): 0.033% § 01%

<1Hz~ ; BOkHz

135mV >135mV i35mV/17kfl :l: SkQ

Nominal Limit
Damping Factor (at 1H2): 106 g 90
Phone-Overload
Option Phono (MM): 109mv
Option Phono (MC): 5.6mV
Tone Control Characteristics
Bass (at 50Hz) Boost 10:13 i 2dB
Cut 10:13 1 2GB
Treble (at 10kH2) Boost 10dB :I: 2dB
Cut IOdB :l: 2dB
DC Output Voltage (at 89)
L channel OmViSOmV
R channel OmViGOmV
Idling Current (at 89) 75mA i SmA
Dimensions 17.4" X 4.1' X 14.1'
(W X H X D) (443 X104 X 359 mm)
Weight 163 lbs./7.4kg

Power Supplies
North America area model
International and Asia/
Oceania models
Power Consumption

AC 120V, 60HZ

AC 230v, 50/60Hz
160W ®
180W (3 o me

These specifications are service target specs.

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

DISASSEMBLY PROCEDURES (REFER TO PAGES 4AND12)

III

IZI
1.

WM

El
1.

. Disconnect the 3 Connectors (JL501,

CABINET TOP (131) REMOVAL

Remove 6 screws (A) and then remove the Cabinet
Top (131).

FRONT PANEL ASSY (AA) REMOVAL

Remove the Cabinet Top (131), referring to the pre-
vious step III.

. Pull out 3 Rotary Knobs (151).
. Remove 5 screws (B) and then remove the Front

Panel Ass'y (AA).

MAIN P.C. BOARD (PCB-1) REMOVAL
Remove the Front Panel Assy (AA), referring to the
previous step El.

. Disconnect the Connector (CW703) from 1 Connector

(CN703) on the CPU P.C. Board (PCB-5).

. Pull out the Rotary Knob (150) and 2 Push Buttons

(146).

cw7o4 and
W502) from 3 Connectors (CNsoa, CN704 and H503)
on the vn P.C. Board (PCB-10).

. Disconnect the Jumper Lead (JL702) from Connector

(CN7OZB) on the Main P.C. Board (PCB-1).

. Remove 3 hexagon nuts (C).
. Remove 8 screws (D) and then remove the Chassis

(161) with CPU PC. Board (PCB-5), Power LED P.C.
Board (PCB-7), VR P..C Board (PCB- 10) and SP SW
P..C Board (PCB- 2).

. Remove 11 screws (E) and then remove the Main P.C.

Board (PCB-1).
it necessary unsolder the lead wire.
CPU P.C. BOARD (PCB-5) REMOVAL

Remove the Cabinet Top (131), referring to the pre-
vious step II]

. Disconnect the Jumper Lead (JL702) from Connector

(CN702A) on the CPU P.C. Board (PCB-5).

. Disconnect the Connector (CW703) from Connector

(CN703) on the CPU P.C. Board (PCB-5).

. Disconnect the Connector (CW701) from Connector

(CN701) on the Power Ind P.C. Board (PCB-7).

. Disconnect the Connector (CW282) from Connector

(CN282) on the |/O P.C. Board (PCB-6).

. Remove 4 screws (F) and then remove CPU P.C.

Board (PCB~5).

El
1.

2.
3t

1.

2.

VOLUME P. 0. BOARD (PCB-10) REMOVAL

Remove the Front Panel Assy (AA), referring to the
previous step (2|.

Disconnect the Connector (CW703) from Connector
(CN703) on the CPU P.C. Board (PCB-5).

Disconnect 3 Connectors (JL501, CW704 and W-502)
from 3 Connectors (CN503, CN704 and H503) on the
Volume P.C. Board (PCB-10).

. Remove hexagon nut (G) and then remove the Vol-

ume P.C. Board (PCB-10).
l/O P.C. BOARD (PCB-6) REMOVAL

. Remove the Cabinet Top (131), referring to the me

vious step m

, Remove 2 screws (H) and then remove SP Terminal

P.C. Board (PCB-4).

.Disconnect the Connector (P61) from Connector

(CN1) on the IIO P.C. Board (PCB-6).

. Disconnect 2 Connectors (CW281 and CW282) from 2

Connectors (CN281 and CN282) on the I/O P.C. Board
(PCB-6).

. Remove 5 screws (I) and then remove l/O P.C. Board

(PCB-6).

OPTION PHONO P.C. BOARD (PCB-101) REMOVAL
Remove the Cabinet Top (131), referring to the pre-
vious step III.

Remove 1 screw (199) and then disconnect 2 Connec-
tors (CW602 and W601) from 2 Connectors (CN102
and CN101) on the Main P.C. Board (PCB-1).