Sony cdp m 20 s service manual

Page 1

SERVICE MANUAL

UK Model

System Compact disc digital audio system
Laser Semiconductor laser (A = 780 nm)
Laser output Max. 0.4 mW'

This ouput is the value measured at a distance of about 16
rnrn Irom the objective lens surface on the Optical Pickup

Block.

Error correction Sony Super Strategy Cross lnlerleave
Reed Solomon Code

Number of channels 2

DA conversion 16bit Ilnear

Frequency response 2 Hz - 20 kHz (3% dB)
Signal to noise ratio

More than 95 dB
Harmonic distortion

Less than 0.01% (at 1 kHz)
Channel separation

More than 90 as
Out puts
Type Output level Load Impedance
LINE OUT Phono jack 2 V more than
(50 kilohms) 10 kilohms
HEADPHONES Stereo 4.5 mW _
phone jack (32 ohms)

SAFETY-RELATED COMPONENT WARNINGII

COMPONENTS IDENTIFIED BY SHADING AND MARK

& 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 PUBLISHED BY SONY.

General
Power requirements
Supplied lrorn HSTDSCDIMCD
Dimensions Approx. 355 x 80 x 275 mm (wlhld)
(14 x 3V4 x 10% inches)
including projecting parts and controls

Weight Approx, 25 kg (5 lbs 9 oz), net
CONTENTS

Page
SPECIFICATIONS ........................ 1
FEATURES ............................ 2
NOTES ON REPAIR ...................... 3
NOTES ON HANDLING THE OPTICAL
BLOCK ............................... 4
SECTIONI (LOCATION AND
FUNCTION OF CONTROLS) ............... 5
SECTION2 (IC BLOCK DIAGRAM) ........... 7
SECTION 3 (ADJUSTMENTS) ............... 11
SECTION4 (MOUNTING DIAGRAM) .......... 14
SECTIONS (SCHEMATIC DIAGRAM) ......... 17
SECTION6 (EXPLODED VIEWS AND
PARTS LIST) .......................... 20
SECTION7 (ELECTRICAL PARTS LIST) ....... 23

COMPACT msc PLAYER
SONY;

Page 2

CDP-M2OS I

FEATURES

- PROGRAM play for playing the selections in a desired
order

0 SHUFFLE play for playing the selections in a random order

- REPEAT function for a single selection, the whole disc,
PROGRAM play, or SHUFFLE play

0 Easy-toread display window shows the track number being
played, elapsed playing time, and the remaining time

in 0 I'll ou-om-o-m o av 04». r»- ai- o In- -1: O-ulwom 94m 0 4i! o m- -.m-o I..- oil-ow oli- vow-oar-» oar-o tn- ODOrIIlb- .Invo-nrodu-O tn- -.wo»- mm. mm- «III- I.»

PROTECTION OF EYES FROM LASER BEAM DURING SERVICING

CAUTION

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

CLASS 1
LASER PRODUCT

WARNING I!

This Compact Disc player WHEN SERVICING, Do NOT APPROACH THE LASER

is classifiedasaCLASSt EXIT WITH THE EYE T00 CLOSELV. IN CASE IT Is

LASER product. NECESSARY To CONFIRM LASER BEAM EMISSION,

The ($351 LASER BE SURE To OBSERVE FROM A DISTANCE OF MORE
. THAN so cm FROM THE SURFACE OF THE OBJECTIVE

p

0:332:31; Lazifirlocated LENs ON THE OPTICALPICK-UP BLOCK.

eye
A

l
|
I

LASER BEAM

base, floating