Sony cdp c 50 m service manual

Page 1

SERVICE MANUAL

AEP Model
Canadian Model

E Model

GDP-050

AEP Model
UK Model
E Model

CDP- C50M

COM PACT

dingo

DIGITAL AUDIO

Photo: CDP-C50

COMPACT DISC PLAYER

System Compact disc digital audio system

Laser Semiconductor laser (t : 780 nm)
Emission duration: continuous

Laser output Max. 44.6 yW *

it This output is the value measured at a distance of
about 200 mm from the objective lens surlace on the

Optical Pick-up Block.
Frequency response
2 Hz - 20 kHz (11.0 dB)
Signal to noise ratio
More than 100 dB
Dynamic range More than 88 dB
Harmonic distortion
Less than 0.05% (1 kHz)
Channel separation
More than 95 dB (1 kHz)
Wow and flutter Below measurable limit
Outputs LINE OUT (phono jack5)
Output level 2 V (at 50 kilohms)
Load impedance over 10 kilohms
HEADPHONES (stereo phone jack)
Output level 0 A 2.4 mW (variable)
(at 132 ohms)

Gsneral
Power requirements
UK model: 240 V AC, 50 Hz
AEP model: 220 V AC, 50 HZ
Canadian model: 120 V AC, 60 Hz
E model: 110A120 or 220-240 V AC,
adjustable, 50/60 Hz
Power consumption
12 W

SPECIFICATIONS

Dimensions GDP-CEO:
Approx. 430 x 110 x 385 mm (w/ln/d)
(17 x 43/3 x15l/3 inches)
CDP-CSOM:
Approx 355 x 105 x 385 mm (w/h/d)
(14 x 41/4 X151/3 inches)
not including projecting parts and controls

Weight GDP-€50:
Approx 5.7 kg (12 lbs 10 oz), net
CDP»C50M:
Approx. 51 kg (11 lbs 4 02), net

REMOTE COMMANDER (RM-055)
Remote control system
lnirared control
Power requirements
3 V DC with two size AA (R6) batteries

Dimensions Approx. 61 X 20 x 150 mm (w/h/d)
(2Iz><"l1s><6 inches)
Weight Approx. 110 g (4 oz)

including batteries
SUPPLIED ACCESSORIES
Audio signal connecting cord

(phone plug X Zthono plug x 2) (1)
Sony SUM-3 (NS) batteries (2)

summer Disc PLAYER
SONY;

Page 2

CDP-CSO/CSOM

TABLE OF CONTENTS

Section Title fig Section M flgg
Specifications ....................... 1 REFERENCE
Features ........................... 2 Focus/Tracking Gain Adjustment . . . . 7
Servicing Note ....................... 2
4. DIAGRAMS
1 GENERAL 4-1. IC Block Diagrams ................ 9
Location and Function of Controls ......... 3 4~2. Semiconductor Lead Layouts ......... 1 l
0 Circuit Boads Location 1 1
2. DISASSEMBLV .................. 4 4-3. Printed Wiring Boards i i . . 12
4-4. Schematic Diagram ................ 15
3. ELECTRICAL ADJUSTMENTS
RF PLL Frequency Adjustment/Lock 5' EXPLODED VIEWS """""""" 19
Frequency Check ................. 5
E-F Balance Adjustment ......... 5 6. ELECTRICAL PARTS LIST ......... 24
Focus Bias Adjustment ............. 6

The compact disc player is equipped with 5 disc trays
which allow you to choose from a large number and wide
variety of selections,

Any disc at any time
can be played using the DISC SELECT buttons,

Multiple functions include:

' PROGRAM play which allows you to play up to 32
selections on any disc in any desired orders

- SHUFFLE play for playing selections in random order.

- REPEAT play for playing a single selection, a single disc, or
all the discs againi

SAFETY'RELATED COMPONENT WARNINGI!

COMPONENTS IDENTIFIED BV 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 SONV.

SERVICING NOTE

NOTES ON HANDLING THE OPTICAL PICK-
UP BLOCK OR BASE UNIT

The laser diode in the optical pick-up block may
suffer electrostatic breakdown because of the poten-
tial difference generated by the charged electrostatic
load, etc. on clothing and the human body.

During repair, pay attention to electrostatic break~
down and also use the procedure in the printed
matter which is included in the repair parts

The flexible board is easily damaged and should be
handled with care,

CAUTION t, ,

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

During service, do not take the Optical Pick-up Block
apart, and do not adjust the APC circuits If there is a
breakdown in the APC circuit (including laser diode),
replace the entire Optical Pick-up Block (including
APC board),

ATTENTION AUfiOMPQSANT AVANT RAPPORT
A LA secuRITéi

LES cowosmrs IDENTIFIES PAR UNE MAROUE A
sun LES DIAGRAMMES SCHEMATIOUES ET LA 1.:er
DES PIECES SONT CRITIQUES POUR LA SECURITE
DE FONCTIONNEMENT. NE REMPLACER ces com
PosANTs QUE PAR DES PIECES SONY DONT LES
NUMEROS SONT DONNES DANS ca MANUEL ou
DANS LES SUPPLEMENTS PUBLIES PAR sonv.