Harman kardon hd 7225 a service manual

Page 1

A

The Harman Kardon

Model HD7325/ H D7225A

COMPACT DISC PLAYER

T@@[mmfi@@

harman/kardon HD 7325

follows:

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

HD7325 GD : North America area model Black version
HD7225A/HD7325 (B :lnternational model Blackversion
HD7225A/HD7325 o :lnternational model

CONTENTS

SPECIFICATION ~~~~~
SAFETY PRECAUTIONS
CONTROLS AND FUNCTIONS ~-
DISASSEMBLY PROCEDURES H
POWER CORD REPLACEMENT ~
ADJUSTMENT PROCEDURE
TROUBLE SHOOTING -------
IC TERMINAL FUNCTIONS

CIRCUIT DESCRIPTION --------

IC BLOCK DIAGRAMS
CD MECHANISM EXPLODED VIEW -
CD MECHANISM PARTS LIST
GENERAL UNIT .................
GENERAL UNIT PARTS LIST
RC. BOARDS .................
ELECTRICAL PARTS LIST -
WIRING DIAGRAM
SCHEMATIC DIAGRAMS ~-

24
27
27
28

harman/kardon

Parts and Service Office
80 Crossways Park West, Woodbury, N.Y, 11797
1112-057OA152 A9403 1500 Primed in Japan

Manual 192A

Page 2

HD7325
HD7225A

CLASS 1 LASER PRODUCT
Product complies with DHHS rules CFR 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 specified herein may result in
hazardous radiation exposure.

CLASS 1

LASER PRODUCT

SPECIFICATION

System : Compact Disc Digital Audio

D/A Converter : Linear, Pulse Width Modulated 3D Bit
stream
Clock Rate :33t8688MHz, 185it/4Fs
Digital Filter

:S-Beam Semiconductor
Optical Laser Pickup
: CIRC System

Signal Detection

Error Correction
Low Level Linearity : +/-1.0dB @-90dB
Frequency Response :4Hz to 20kHz +0dB/-1.5dB
Total Harmonic Distortion (THD) : 0.006%

Dynamic Range :95dB

Signal to Noise Ratio : 100dB

Be Careful 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
unit.

ADVARSEL:

Usynlig laserstraling ved abning nér
sikkerhedsafbrydere er ude at funktiont Undga
udsaettelse for straiing.

VAROITUS!
Laite sisaltaa Iaserdiodin, joka lahettaa nékymétonta
silmille vaarallista laserséteilya.

Channel Separation : 93dB

Line Output Level/impedance : 2.2V@10k§2

Digital Output Level/ Impedance : 0.5Vp-p @759
(Coaxial)

Power Supply
USA. and Canada models
International model

Power Consumption

Dimensions (W x H x D)

:ACi 20V, 60Hz
:AC230/240V, 50/ 60Hz
:20Watts
:1743/8' x 3-5/8~ x 13"
442mm x 92mm x 326mm
Weight : 10.1lbs/45kg
Specifications and components subject to change without notice.
Overall performance will be maintained or improved.