Harman kardon hd 7425 service manual

Page 1

The Harman Kardon

Model HD7425

Manual 193A

COMPACT DISC PLAYER

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h 33'7?" kardon Majm

the models as follows:

0 : lniemalional model

The iollowing marks lound in lhe parts list oi lhis manual identity

QR : North America area model Black version
133 : lnlernalional model Black version

CONTENTS

SPECIFICATIONS --------
SAFETY PRECAUTIONS
CONTROLS AND FUNCTIONS ~~
DISASSEMBLY PROCEDURES
POWER CORD REPLACEMENT
ADJUSTMENT PROCEDURE -
TROUBLE SHOOTING
IC TERMINAL FUNCTIONS
CIRCUIT DESCRIPTION -----

[c BLOCK DIAGRAMS ..................
CD MECHANISM EXPLODED VIEW -
CD MECHANISM PARTS LIST
GENERAL UNIT EXPLODED VIEW
GENERAL UNIT PARTS LIST
ac BOARDS .......................
WIRING DIAGRAM --------
ELECTRICAL PARTS LIST -
SCHEMATIC DIAGRAM "~-

harman/kardon

Parts and Service Oilice
80 Crossways Park West, Woodbury, NY, 11797
1112-0570A152 A9403 1500 Printed in Japan

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CLASS 1 LASER PRODUCT
Product complies with DHHS rules CFFi subchapter J part 1040:
10 at date of manufacture.

DANGER-Invisible laser radiation when opened and interlock
failed or defeated, Avoid direct exposure to the beam.

CAUTION-use of all controls. adjustments or performance of

procedures other than those specilied herein may result in
hazardous radiation exposure.

CLASS 1

LASER PRODUCT

SPECIFICATIONS
System _ :CompaCt Disc Digital Audio
D/A Convener : Dual 18 Bit Linear D/ A Converters,

4FS Digital Filter, RLS
(Heal-time Linear Smoothing) I
zit-Beam Semiconductor
Optical Laser Pickup
: CIRC System

Signal Detection

Error Correction
Low Level Linearity : +/~1.0dB @-90dB
Frequency Response :4Hz to 20kHz +0dBl-1r5dB
Total Harmonic Distortion (THD) : 000696

Dynamic Range :95dB

Signal to Noise Ratio : 1 00:18

Be 'Carelul of the Laser Pickup

Although you cannot see it from the outside, a laser
pickup is located under the disc tray and a precision lens
is built in it,

Since the laser pickup, including the lens element, is
especially sensitive to dust, keep the disc tray closed
when not in use. Also do not put your hand inside the
uniL

ADVAHSEL:

Usynlig laserstréling ved apning nér
sikkerhedsaibrydere er ude at iunktion. Undga
udsettelse tor strafing.

VAROITUSI
Laite siséltfié laserdiodin, joka Iehettée nékymétonté
silmille vaaralllsta laserséteilyé

Channel Separation {95113

Llne Output Level/ Impedance : 22V010k9

Digital output Level/Impedance : DEVp-p @759
(Coaxial) . _ '

Power Supply
USA. and Canada models :ACt 20V, 60H:
lntemational model 2A0230/240V, 50/60Hz

Power Consumption : 20Watts

Dlmenslons (Wx H x D) :17-3/8' x 3-5/8' x 13'

442mm x 92mm x 326mm
Weight : 10.4lbs/4Jkg

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

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