Sony d 242 ck service manual

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D-242CK

SERVICE MANUAL

Austra/ian Model

Model Name Using Similar Mechanism D245
CD Mechanism Type KSMA33ICAN (8)
Optical Pick-up Name KSS»3SIC
SPECIFICATIONS
System General

Compact disc digital audio system
Laser diode properties
Material : GaAIAs
Wavelength : A = 780 nm
Emission duration 2 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 3% dB (measured by EIAJ CP-307)
Output (at 4.5V input level)
Headphones (stereo minijack)
15 mW +15 mW at 16 ohms
Line output (stereo minijack)
Output level 017V ms at 50 kilohms
Recommended load impedance over 10 kilohms

Power requirements
0 Rechargeable battery : 2.4 V DC
0 Two LR6 (sizerAA) batteries : 3 V DC
0 AC power adaptor (DC IN 4.5V jack) 2 240 V, 501-11
0 Sony CPM-3OOP moum plate and CPM-300PK
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
(5%x15mx 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)
Connecting cord (Phono plug >< 2H stereo miniplug (1))
Car battery cord (1)
Car connecting pack (1)
Spiral tube (1)
Spare fuse (1)
Velcro tapes (2)

Design and specifications are subject to change without
notice.

COMPACT DISC COMPACT PLAYER
SONY.

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TABLE OF CONTENTS

Specification .................................................................. 1
1. GENERAL

Location and Function of Controls ------------------------------------ 3
2, SERVICE NOTES ...................................................... 3
3. DISASSEMBLY ........................................................ 5
4. SERVICE MODE ....... . ............................................... 5
5. ELECTRICAL ADJUSTMENTS. ......... . ........................ 7
6. EXPLANATION OF IC TERMINALS --------------------- 11
7. DIAGRAMS

7-1, Printed Wiring Boards
72. Schematic Diagram --

8. EXPLODED VIEWS
8-1, Cabinet Section-l --
8-2. Cabinet Section-Z
8-3i Optical Pick-up Section

(KSM-331CAN (8))

9. ELECTRICAL PARTS LIST-

DANGER Flexible Circuit Board Repairing
Invisible laser radiation when open and interlock failed or defeated.

. . . . .
Avoud direct exposure to beam, 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)

For the customers in Australia 0 Be careful not to apply force on the conductor when

The supply cord of the AC power adaptor cannot soldering or unsoldering.
be replaced; it the cord is damaged, the AC

d h Id b d r .
Powera 3mm 5 0 ed'scar Ed Notes on chip component replacement

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

Use of controls or adjustments or performance
of procedures other than those specified herein

may result in hazardous radiation exposure SAFETY-RELATED COMPONENT WARN|NG!!

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