Sony d 243 ck service manual

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D-243CK

SERVICE MANUAL

Canadian Mode/

Model Name Using Similar Mechanism D-245
CD Mechanism Type KSM~3SICAN (8)
Optical Pick-up Name KSS-331C
SPECIFICATIONS
System General

Compact disc digital audio system
Laser diode properties
Material : GaAIAs
Wavelength: )1 = 780 nm
Emission duration : Continuous
Laser output : Less than 44.6 ,uW (measured at 200 nm
away from the objective lens surface)
Error correction
Sony Super Strategy Cross Interleave Reed Solomon
Code
D-A conversion
1»bit quartz time-axis control
Frequency response
20- 20,000Hz f; dB (measured by ElAJ CP-307)
Output (at 4.5V input level)
Headphones (stereo minijack)
15 mW +15 mW at 16 ohms
Line output (stereo minijack)
Output level 0.7V ms at 50 kilohms
Recommended load impedance over 10 kilohms

Power requirements
0 Rechargeable battery : 2.4 V DC
0 Two LR6 (size AA) batteries : 3 V DC
0 AC power adaptor (DC IN 4.5V jack) ; 120 V, 60Hz
0 Sony CPM-3OOP mount plate and CPM-BOOPK
mount arm for use on car battery : 4.5 V DC
Dimensions (w/h/d) (without projecting parts and controls)
Approx. 134 X 32 X 152 mm
(SW/BX 15As>< 6 in)
Mass (without rechargeable battery)
Approx. 270 g(916 oz)
Operating temperature
5°C- 35 °C (41 °F- 95°F)
Supplied accessories
AC power adaptor (1)
Stereo headphones (1)
Connecting cord (Phono plug X 2<-> stereo miniplug (1))
Car battery cord (1)
Car connecting pack ( 1)
Spiral tube (1)
Spare fuse (l)
Velcro tapes (2)

Design and specifications are subject to change without
notice

COMPACT DISC COMPACT PLAYER
S 0 NY;

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TABLE OF CONTENTS

Specification ......................................... ............. 1
1. GENERAL
Location and Function of Controls --------- . ~~~~~~~~~~~~~~~~~~~~~~~~~ 3
2, SERVICE NOTES ..................................................... 3
3. DISASSEMBLY -------- - ....................................
4 SERVICE MODE ..
5. ELECTRICAL ADJUSTMENTS~~~
6. EXPLANATION OF IO TERMINALS ----------------------- 11
7. DIAGRAMS
7.1 Printed Wiring Boards ................ . ...................... 14
7.2 Schematic Diagram ...... . ..................................... 17
8. EXPLODED VIEWS
8-1. Cabinet Section-1 ~~~~~~~~~~~~~~ . 25
8-2, Cabinet Section-2 -------------- . 26
8-3. Optical Pick-up Section
(KSMi331CAN (5)) ........ .................................. 27
9. ELECTRICAL PARTS LIST ..................................... . 28

DANGER
Invisible laser radiation when open and interlock failed or defeated.
Avoid direct exposure to beam.

CAUTION

Use of controls or adjustments or performance
of procedures other than those specified herein
may result in hazardous radiation exposure.

SAFETY

COMPONENTS IDENTIFIED BY MARK A OR DOTTED
LINE WITH MARK A ON THE SCHEMATIC DIAGRAMS
AND IN THE PARTS LIST ARE CRITICAL T0 SAFE
OPERATION. REPLACE THESE COMPONENTS WITH
SONY PARTS WHOSE PART NUMBERS APPEAR AS
SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB-
LISHED BY SONY.

Flexible Circuit Board Repairing

0 Keep the temperature of the soldering iron around
270°C during repairing.

0 Do not touch the soldering iron on the same conduc-
tor of the circuit board (within 3 times).

0 Be careful not to apply force on the conductor when
soldering or unsoldering.

Notes on chip component replacement

0 Never reuse a disconnected chip component.
0 Notice that the minus side of a tantalum capacitor
may be damaged by heat.

ATTENTION AU COMPOSANT AYANT RAPPORT
A LA SECURITEI

LES COMPOSANTS IDENTIFIES PAR UNE MAROUE A
sun LES DIAGRAMMES SCHEMATIOUES ET LA LISTE
DES PIECES SONT cmnouEs POUR LA sécumré
DE FONCTIONNEMENT, NE REMPLACER ces com-
POSANTS QUE PAR DEs PIECES SONY DONT LES
NUMEROS SONT DONNEs DANS CE MANUEL ou
DANS LES SUPPLEMENTS PUBLiés PAR SONY.