Harman kardon pm 645 vxi service manual

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The Harman Kardon
Model PM645 in

F

Manual 120A

STEREO INTEGRATED AMPLIFIER

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

: North America area model

: North America area model Black version
o :
{B :

General model
General model Black version

: Japan model

harman/kardon

240 Crossways Park West,Woodbury, N.Y.11797
111273752120A4 F-039710 1500 Primed In Japan

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SPECIFICATIONS
Nominal Limit Nominal Limit
, V RMS Output Power Filters
39, 1kHz THD 0.1% 7o_gw 260W Subsonic 15Hz, - 3dB : ids/Octave
4n, 1kHz THD 0.3% 72.2wgsow High Cut 6kHz, - 3dBi1dB/Octave .
High Instantaneous Current DC Output Voltage (
Capability (HCC) 40A ; 35A L channel OmV : 60mV
Half Power Bandwith 10H: ~100kHz R channel OmV : 60mV
Frequency Responce at -3dB 0.62Hz~163kHz R'AA Equalization at Tape Out
Input Sensitivity (20Hz/20kHz) (No load) 0.18dB+1.0dB/0.18dB-0.2dB
Tuner 135mV1 25mV Phono Over Load (No load)
Phono(MM) 2.2mVi0.2mV* Phone (MM) 108mV595mV
Phono(MC) 120irV i 20prV Phono (MC) 5,6mV g 5mV
Signal to Noise Ratio Dimensions (W x H x D) 17-1/2" x 4»1/16"><13-7/8
Tuner 80.7ng75dB l443><103x351mmi
Phono(MMl 79.5ng73dB Weight 14 lbs- 502- 16-51(9)
Phono(MC) 76.5dB g 74dB Power Supplies
Channel Separation at 10kHz North America area model AC 120V, 60Hz
Tuner 66de 50dB General model AC 220/24OV, 50/60Hz
Phono(MM) 58dBé45dB Japan model AC 100V, 50/60Hz
Phono(MC) 50ng43dB Power Consumption
IM Distortion Ratio 0.048%;O.1% North America area model 248W (300VAI
Damping Factor at 1kHz 60.3=50 General model 176w
Tone Control Characteristics Japan model 340W
Bass Turnover Frequency (200Hz/400Hz) _ {
Bass at 50Hz/100Hz
Boost 10mg 1 2dB Input Sensitivity for General model are 2.3mV t 0.2mV
Cut 10dB:2dB (MM) and 145MVi201LV (MC).
Treble Turnover Frequency (2kHz/6kHZ)
Treble at 10kHz/30kHz This specification is the target of servicing. But, there is a case that the
Boost IOdB i 2dB specification is not applicable to the measurement condition and instrument.
Cut 1 OdB i 2dB

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

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 To EACH EXPOSED
'" the n't- METAL SURFACE OF
2. Be sure that any protective devices UNIT UNDER TEST HIGH
such as nonmetallic control knobs, VOLTAGE
insulating fishpapers, cabinet backs, OR + LEAD
adjustment and compartment covers
or shields, isolation resistor-capacity
networks, mechanical insulators, i
etc. which were removed for servic-
ing are properly reinstalled. VTVM
3. Be sure that no shock hazard exists; check for leakage 0 AC SCALEO
current using Simpson Model 229 Leakage Tester,

SIMPSON MODEL 229 ETC. FOR
LEAKAGE TEST

TO AC GROUND SUCH
AS WATER PIPElBX CABLE,
CONDUIT, ETC.

GROUND

r,
LEAD .

standard equipment item No. 21641, RCA Model 1.5kt'l
WT540A or use alternate method as follows: 10W
Plug the power cord directly into a 120-volt AC VVV

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 piF capacitor, I I

in series with all exposed metal cabinet parts and I I

a known earth ground, such as a water pipe or conduit. 015):

Use a VTVM or VOM with 1000 Ohms per volt, or '

higher sensitivity to measure the AC voltage drop TEST pnan

across the resistor. (See Diagram.) Move the resistor - (L

connection to each exposed metal part having a

return path to the chassis (antenna, metal, cabinet, To EXPOSED CONNECT T0 KNOWN

screw heads, knobs and control shafts, escutcheon, METAL PARTS EARTH GROUND

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 035 volt RMS or more is excessive and indicates a potential shock hazard which must be corrected before
returning the unit to the owner.