Harman kardon hk 6950 r service manual

Page 1

The Harman Kardon

Model HK6950R

Manual 187A

INTEGRATED AMPLIFIER

T@@mfi@@

harman kardon Mm u:

: German model

eeaee

The following marks found in the parts list of this manual
identify the models as follows.
: North America area model Black version

: German model Black version
: International model Black version
: Asia/Oceania model Black version

CONTENTS

SPECIFICATIONS
LEAKAGE TEST --
DISASSEMBLY PROCEDURES
POWER CORD REPLACEMENT ---------------------
ALIGNMENT PROCEDURES
BLOCK DIAGRAM ~~~~~~~~~
CONTROLS & FUNCTIONS--

2
2
43
'3
4
4
5

GENERAL UNIT PARTS LIST--

GENERAL UNIT - ~ 7
Re BOARDS -------------- -- 8
ELECTRICAL PARTS LIST
SCHEMATIC DIAGRAMS----

WIRING DIAGRAM -----------

, harman/kardon

Pans and Service Office
240 Crossways Park West, Wuodbury, NY. 11797
1i12-025DA152 P079206 1500 Printed in Japan

H0969)IH

Page 2

H K6950R

SPECIFICATIONS
Nominal Limit Nominal Limit
Continuous Average Power (FI'C) Tone Control Characteristics
20Hz-20kHz, both channels driven Bass (at 50Hz)
an, 0.08% HMS 190w g 170w 63$ Boost 10dB i 2dB
140w ; 120w o®9 Cut 10118 i 2dB
4.0. 0.1% RMS 195W a 170W Treble lat 10kHz)
High-instantaneous Current Boost lodB i 2dB
Capability (HCC) 85A 2 70A Cut 10dB i 2dB
Half Power Bandwidth <10Hz~>100kHz <10Hz~70kHz Filters
Frequency Response Subsonic 15Hz, 3dB i 1dB/Octave
(at -3dB down) 0.16Hz~200kHz <1Hz~>160kHz Phase Correct Loudness at 50Hz GdB i 2dB
@0123 DC Output Voltage
0.16Hz~150kHz <1Hz~>110kHz L channel OmV i 60mV
0® R channel OmV i 60mV
Square Wave Rise Time 2psec é 2.5,usec RIAA Equalization at Tape Out
input Sensitivity (at 170W output) (ZOHZIZOkHz) (10kt). load) 0.2dB i0.5dE
CD 135mV i 25mV Phono Over load (No load)
Phono (MM) 2.0mV i 0.3mV @fl? Phone (MM) 168mV ; 120mV
2.2mV i 0.3mV 863 Phono (MC) 8.5mV ; 5mV
Phono (MC) Hoyv i 20;: Dimensions (Wx H x D) 176/8" x6-5/15 x15-15/16"
130/1V i ZOFV 01!? (443 x 160 x 405mm)
Signal to Noise Ratio Weight 37.5le (17.0kg)
CD 78dB ; 70dB Power Supply AC 120V, SDHZ ED
PhOI'IO (MM) 77.6dB ; 71dB (33% AC 230/240V, 50/60Hz
77.6dB g 75dB oat. ¢D®®®
Phono (MC) 74dB g 67dB Power Consumption 350W .3)
Channel Separation (at 10kHz) 400W
Efiono (MM) 4842:: i 13:: These specifications are service target specst
Phono (MC) 45'6d3 g 4MB Specifications and components subject to change without notice.
IM Distortion Ratio 0.039% S 0.1% Overall periormance will be maintained or improved.
Damping Factor at 1kHz 100 g 70

LEAKAGE TEST (FOR SERVICE ENGINEERS IN THE U.S.A.)

Before returning the unit to the user, perform the following safety checks:
1. Inspect all lead dress to make cer-

tain that leads are not pinched or SIMPSON MODEL 229 ETC. FOR
that hardware is not lodged be To EACH EXPOSED LEAKAGE TEST To Ac GRO S c
, UND U H
99" "9 Chass's and 9" metal METAL SURFACE or A5 WATER on GAS PIPE.
parts in the unit. UNIT UNDER TEST HIGH GROUND ax CABLECONDUIT. ETC
2. Replace all protective devices such ggqfigfio LEAD

as nonmetallic control knobs, in<
sulating fishpapers, cabinet backs, 9%
adjustment and compartment cov- VTVM
ers or shields, isolation resistor- -0 AC SCALE 0
capacitor networks, mechanical in-

sulators, etc.

3. Be sure that no shock hazard exists; check for leakage current
using Simpson Model 229 Leakage Tester, standard equipment
item No. 21641, RCA Model WT540A or use alternate method
as follows:

Plug the AC line cord directly into a 120-volt AC receptacle (do not

use an Isolation Transformer for this test). Using two clip leads,

connect a 1500 ohm, 10-watt resistor paralleled by a 0.15;:F

capacitor, in series with all exposed metal cabinet parts and a

known earth ground, such as a water pipe or conduit. Use a VTVM TO EXPOSED CONNECT To KNOWN

or VOM with 1000 ohms per volt, or higher sensitivity to measure METAL PARTS EARTH GROUND

the AC voltage drop across the resistor. (See Diagram.) Move the resistor connection to each exposed metal part having a

return path to the chassis (antenna, metal, cabinet, screw heads, knobs and control shafts, escutcheon, etc.) and measure the

AC voltage drop across the resistor. (This test should be performed with the power switch in both the On and Off positions.)

A reading of 0.35 volt RMS or more is excessive and indicates a potential shock hazard which must be corrected before

returning the unit to the owner.

lSKOHM
10W

TEST PROBE