Harman kardon pm 640 service manual2

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The Harman Kardon
MOdeI PM64O Manual No. 21A

HICURRENT CAPABILITY
INTEGRATED AMPLIFIER

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harman/kardon

140 CHOSSWAYS PAHK WEST, WOODBURY, N.V.1I797
PRINTED IN JAPAN 1IIZ-HI 522IA3 P0781 7

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- j PM640

CONTENTS

SPECIFICATIONS .................... . . 2 GENERAL UNIT EXPLODED VIEW ---------- 8,9
ALIGNMENT PROCEDURES --------------- 2 GENERAL UNIT PARTS LIST -------------- 10
COMPONENTS AND THIER FUNCTIONS ELECTRICAL PARTS LIST -------------- 10-13
FRONT PANEL ...................... 3'4 PACKAGE ............ 14 (
REAR PANEL ........................ 5 SCHEMATIC DIAGRAM - 15
DISASSEMBLY PROCEDURES ------------- 6,7 WIRING DIAGRAM --------------------- 16
SPECIFICATIONS
R.S.M. POWER OUTPUT: 35 W (0.1%) PHONO OVERLOAD: more than 140 mV at 1 kHz
FREQUENCY RESPONSE: 1 Hz-120 kHz (-3 dB) POWER SUPPLY: A0120 V, 60 Hz
IM DISTORTION: less than 0.2% DIMENTIONS: 440 (W) x 90 (H) x 320 (D) mm
SLEW RATE: 80 V/u sec. WEIGHT: 6.4 kg
OVERALL NEGATIVE FEEDBACK: 17 dB
SIN HF- A) PHONO: 73 dB . Specifications and components subject to change without notice
AUX: 80 dB Overall performance will be maintained or improved.
ALIGNMENT PROCEDURE ' §

IDLING CURRENT ADJUSTMENT

Instrument: DC Voltmeter
Notes: 1. Set function selector switch to AUX position.
2. Set volume control to minimum position.
3. Proceed with the adjustment at least 20 minutes after the power has been switched on to stabilize
idling current.

Step Connect Output Meter To Adiust Adjust For
1 DC voltmeter to TP1 (+) and TP2 (v) VR401 33 mV on DC voltmeter
2 DC voltmeter to TP3 (H and TP4 (-l VR402 Same as above

PHONO EQUALIZER P.C. BOARD

Q

TP2 TP3

R447 R446

VR401 VFl402

MAI N P.C. BOAR D

mm

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Alignment Points Location