Sanyo DCX 900 Service Manual

Page 1

Service Manual

Specifications

Tuner section
Frequency range

Amplifier section

Cassette deck section
Recording system ........
Fast forward]

rewind time ........

CD player
Channels ................
Frequency response
Signal to noise ratio . ..
Channel separation ......
Total harmonic

distortion . .......
Wow and flutter

FM : 87.5-108MHZ
AM: 522-1611kHz

Al: bias,4»track, stereo

Approx. 1ZDsec. (C-60)

Zvchannel stereo
20 - 20,000 Hz
95 dB

90 dB (1 kHz)

6.13% (1 kHz)
undetectable

Specification subject to change without notice.

CD Stereo

mumyrmm

slew/Miro

FILE NO. E 2144;?

Sound System DC X900 (AU?

PRODUCT CODE No.
129 353 10

General
Output power ............

Power requirements . .
Dimensions(approx.) ......

RB-XQDD remote controller
Power source ..

Dimensmnshpprox.)

"Dolby" and the double-D symbol

Max. 30W x 2 (at thms,

10%

distortion)

PHONO : SmV/fl7k ohms
VIDEO : ZEOmVI47k ohms
SPEAKERS : Bohms
HEADPHONES : Sohms
AC : 240V. SOHZ
360 (W) x 328 (D) x 390 (H) mm

DC : 3 V
"AA/SUM-ZIRE" battery,x 2
63 (W) X 1803) X 175 (H) mm

DU are trademark of Dolby

Laboratories Licensing CorporationDolby Noise Reduction system is
manufactured under license from Dolby Laboratories Licensing

Corporation.

REFERENCE NO. 5M580036

Page 2

LASER BEAM SAFETY PRECAUTIONS

Do not look directly at the laser beam coming from the
pick-up or allow it to strike against your fingers. skin, etc.
Do not apply power if there is a broken part in the laser
output section oi the pickup,

Structural Safety Interlock

This model has a disc chuck lever and top lid. This disc chuck
lever and top lid prevent to expose the laser beam for users.

INVISIBLE LASER RADIATION EXPOSURE TO BEAM IS DANGEROUS CLASS I LASER PRODUCT

OUTPUT POWER : 0.6 mW MAX

WAVELENGTH 2 790 nm

HANDLING THE PICK-UP

l.

a.

F_-

RADIAIIBN WHBI
I'IPEN AND INTEHLOCK

timid-W
nVEl'll'llDlIBl.

ER
PANEL

CAUTION » USE OF CONTROLS OR ADJUSTMENTS OR PERFORMANCE OF PROCEDURES OTHER THAN THOSE
SPECIFIED IN THE OPERATING INSTRUCTIONS MAY RESULTIN HAZARDOUS RADIAHON EXPOSURE.

THE COMPACT DISC PLAYER SHOULD NOT BE ADJUSTED 0R REPAIFIED BY ANYONE EXCEPT PROPERLY

QUALIFIED PERSONNEL

Shipping and storage cautions
The pick-up must be stored in a conductive bag until
immediately prior to its use.

. Do not drop it or subject it to impacts.

Repair cautions

. when handling the pick-up. be careful not to give it

undue force or shock by your hands. Otherwise the
pick-up may malfunction or the PCB may be cracked.

. The pick-up which has been minutely adjusted before

shipment as one part, Never touch and move the
adjusting points and setscrews of the pick-up unless
otherwise described in the item of adjustment to avoid
damage,

E.

A strong magnet is used in the pick-up.
Do not bring a magnet or other magnetized object near
to it.

. Cleaning the lens

*lf dust gets on the lens, clean it away by using an air
brush such as used for a camera lens.

*The lens is held in place by a spring.
if the center of the lens is dirty, carefully clean it
using cotton swab moistened with isopropylalcohoi.
Since special coating is made on the surface of the
lens which is made of plastics, do not use other kind
of alcohol and cleaning fluid to prevent damage to
the lens. Also, be careful not to bend the lens spring
when cleaning.

BEFORE REPAIRING THE CD PLAYER

1 .

Preparations

av Many It}. LSl and the Pick-up (laser diode) are used in

the compact disc player. These components are sensitive
to static electricity, and might be damaged by static
electricity or high voltage, so particular care should be
taken regarding this point.

. Many precision components and the lens are used in

the pick-up.

Never attempt to make repairs. or to store parts.
where the temperature or humidity is high, where
magnetism is strong. or where there is much dust.

2 Notes regarding repairs
. Be sure to first disconnect the power ping before

attempting to replace any component.

. All tools, instruments. etc, used for measuring must be

grounded.

Grounding can be accomplished by using conductive
metal sheet on the work bench.

To prevent AV leakage of the soldering iron. ground its
metal part.

Repair personnel must be grounded.