Sony cdp m 20 service manual

Page 1

SERVICE MANUAL

Canadian Model
AEP Model
UK Model
E Model

SPECIFICATIONS

System Compact disc digital audlo system
Disc Compact dlsc
Laser Semiconductor laser (A = 780 nm)
Laser output Max. 0.4 mW'
Tnls ouput is the value measured at a distance or about 1.6
mm lrom Ina obiectlve lens surface on the Optical Pickup
Block.
Spindle speed 200 r.p.m. to 500 r.p.m. (CLV)
Scan velocity 12 - 1.4 mlsec. Constant
Error correction Sony Super Strategy Cross Interleave
Reed Solomon Code
Number 0! channels
2
DA conversion 16-blt llnear

Frequency response
Model for Canada: 2 Hz - 20 kHz (20,5 dB)
Model for other countries: 2 Hz - 20 kHz clfi as)
Signal to nolse ratlo
More than 95 dB
Dynamic range More than 93 dB
Harmonic distortion
Less than 0.005% (at 1 kHz)
Channel separation
More than 90 dB

Wow and flutter Below measurable limit (10.001 °/o W PEAK)

ATTENTION AU COMPOSANT AVANT RAPPORT
A LA SECURITE!

LES COMPOSANTS IDENTIFIES PAR UNE TRAME ET
UNE MARQUE & SUR LES DIAGRAMMES SCHE-
MATIOUES ET LA LISTE DES PIECES SONTCRITIQUES
POUR LA SECURITE DE FONCTIONNEMENT. NE REM-
PLACER CES COMPOSANTS QUE PAR DES PIECES
SONY DONT LES NUMEROS SONT DONNES DANS CE
MANUEL OU DANS LES SUPPLEMENTS PUBLIES PAR
SONY.

SAFETY-RELATED COMPONENT WARNING

COMPONENTS IDENTIFIED BY SHADING AND MARK

& ON THE SCHEMATIC DIAGRAMS AND IN THE
PARTS-- LIST ARE CRITICAL TO SAFE OPERATION.
REPLACE THESE COMPONENTS WITH SONV PARTS
WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS
MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.

Type Output level Load Impedance

LINE OUT Phono jack 2 V more than
(50 kilohms) 10 kilohms
HEADPHONES Stereo jack 4.5 mW _
(32 ohms)

General

Power requirements
Model for Canada 120 V AC
Model tor the Unlted Klngdom: 240 V AC
Model for the European countries: 220 V AC
Model for other countrles: 110 - 120 and
220 - 240 V AC adjustable
Power consumption 10 W

Dimensions Approx. 355 x 80 x 275 mm (w/h/d)

(14 X 3]: X 10Is inches)

including projectlng pans and controls

Weight Approx. 3.0 kg (6 lbs 10 oz), net

CONTENTS

Page

SPECIFICATIONS............... ............... 1
FEATURES ..... .. ........ 2
MODEL IDENTIFICATION ....................... 3
SECTION 1

(LOCATION AND FUNCTION OF CONTROLS). . . . .5

SECTION 2 (IC BLOCK DIAGRAM). . . . . . . . ......... 7
SECTION 3 (ADJUSTMENTS) .................... I I
SECTION 4 (MOUNTING DIAGRAM) . . . . . . . . . . 14
SECTION 5 (SCHEMATIC DIAGRAM) .............. 17
SECTION 6 (EXPLODED VIEWS AND PARTS LIST).

SECTION 7 (ELECTRICAL PARTS LIST) ........... 23
SUPPLEMENT-2 . 26

BIIIVIPIICT DISC PLAYER

SONY;

Page 2

CDP-M2O

FEATURES

0 PROGRAM play for playing the selections in a desired
order

0 SHUFFLE play for playing the selections in a random order

wow -4»- w o morn o lll- nu»- r.»-mlo-iv o» o~ ul-o i-r o. «no in»- wow». .u -III"- in» o .i- on» o m o I»- m 0 1H 9 m-

- 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

PROTECTION OF EYES FROM LASER BEAM DURING SERVICING
BESKYTTELSE AF OJNE MOD LASERSTRALING UNDER SERVICE

CAUTION

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

. This Compact Disc player
' is classified as a CLASS 1
CLASS 1 , , LASER product.
: LASER PRODUCT The CLASS1 LASER

PRODUCT label is located
on the rear exterior.

WARNING I!

WHEN SERVICING, DO NOT APPROACH THE LASER
EXIT WITH THE EVE TOO CLOSELY. IN CASE IT IS
NECESSARY TO CONFIRM LASER BEAM EMISSION,
BE SURE TO OBSERVE FROM A DISTANCE OF MORE
THAN 30 cm FROM THE SURFACE OF THE OBJECTIVE
LENS ON THE OPTICAL PICKvUP BLOCK.

op tical pick-up
block

base, floating

ATTENTION

Lemploi de commandes, des réglages ou un choix de
procedures différents des specifications de cette
brochure peuvent entrainer une exposition a des
radiations dangereuses.

Ce lecteur de compact

CLASS 31223133335;
LASER PRODUCT CLASSE1.

La mention CLASS 1
LASER PRODUCT est
située sur le socle de
Iappareil.

ADVARSE LI!

Under service ma ajnene ikke komme naer objektiinnsen
pa den optiske pick-up enhed. I tilfaelde af at det er
nodvendigt at kontrollere udsendelsen aI laserlys, skal
det ske i an afstand at mere end 30 cm Ira den optiske
pick-up.

LASE R BEAM

canec ting line

0- III"- mom»- m o tll our--mowomr o .w o w o