Harman kardon pm 635 service manual

Page 1

The Harman Kardon
Model PM635

Manual 103A

ULTRAWIDEBAND INTEGRATED AMPLIFIER

T@@[h1tmfi@@ Ménméa

harman/kardon

240 Crossways Park Wesl,Woodburv,N.Y 11797
11127315210350 P7088506 1850 ansd m Japan

989Wd

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SPECIFICATIONS

Nominal Limit
RMS Output Power
8K), 1kHz, THD 0.09%
40. 1kHz, THD 1%
High Instantaneous Current
Capability lHCC) 18A
Half Power Bandwith

40W 2 30W
5 5W a 50W

Usable Sensitivity

. 10Hz ~ 70kHz
Frequency Response at -3dB 0.5Hz~125kHz

Nominal Limit

Loudness Control (with Volume

control at -40dBl
at 10kHz
at 50H:
DC Output Voltage
L channel
R channel
RIAA Equalization

3dBi1dB
IOdBi 2dB (

OthBOmV
0mv: 60mV
1.2dBigidB /0.3dB *3" dB

Video/CD, Tuner, Tape 135mV : 25mV
Phono 2.2mV : 0.3mV
Signal to Noise Ratio
Video/CD, Tuner, Tape 85dB 2 73113
Phono 80dB 2 72dB
Channel Separation at 10kHz
Video/CD, Tuner, Tape 53dB z45dB
Phono 57de45dB
IM Distortion Ratio 0.15% 50.2%
Damping Factor at 1kHz 632 60
Tone Control Characteristics
Bass at 50H:
Boost 10dB:2dB
Cut - IOdB : 2dB
Treble at 10kHz
Boost 10dB .t 2dB
Cut - IOdB i 2dB

at Tape Out (20Hz/20kHZI
(No load)
Phono Overload (No load)
Dimensions (W x H x DI

190mV 2150mv
17-1/2" x 4-1/16" x13-7/8"
(443 x 103 x 353 mm)

Weight 12 lbs. 2 oz. {5.5 kg)
Power Supply
U.S.A. model AC 120V, 60Hz
General model AC 220/240V, 50/60Hz
Japan model AC 100V, 50/60Hz
Power Consumption
U.S.A. model 220W (242VA)
General model 190W
Japan model 110W
This specification is the target of servicing. But. there is a case (

that the specification is not applicable to the measurement
condition and instrument,

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

PM635

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 certain
that leads are not pinched or that
hardware is not lodged between
the chassis and other metal parts
in the unit.

2. Be sure that any protective devices
such as nonmetallic control knobs,
insulating fishpapers, cabinet backs.
adjustment and compartment covers
or shields, isolation resistor-capacity
networks, mechanical insulators,
etc. which were removed for servic-
ing are properly reinstalled.

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
WT54OA or use alternate method as follows:

Plug the power 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 14F capacitor.
in series with all exposed metal cabinet parts and
a known earth ground, such as a water pipe or conduit.
Use a VTVM or VOM with 1000 Ohms per volt, or
higher, sensitivity to measure the AC voltage drop

TO EACH EXPOSED

METAL SURFACE OF
UNIT UNDER TEST HIGH
VOLTAGE

OH + LEAD

SIMPSON MODEL 229 ETC. FOR
LEAKAGE TEST

T0 AC GROUND SUCH
AS WATER PIPE, BX CABLE
GROUND CONDUIT, ETC.

LEAD

é

VTVM

.0 AC SCALEo.

1.5m
IOW

IM

____||_

0.15MF

across the resistor. (See Diagram.) Move the resistor TEST PROBE 4
connection to each exposed metal part having a
return ath to the chassis (antenna, metal, cabinet,

p TO EXPOSED CONNECT T0 KNOWN

screw heads, knobs and control shafts, escutcheon,
etc.) and measure the AC voltage drop across the

METAL PARTS

EARTH GROUND

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 owneri