Sony CDP 311 Service Manual

Page 1

CDP-le/ 311

SERVICE MANUAL

US Model
Canadian Model
AEP Model

UK Model

E Model
Australian Model

Photo: CDP- 311 model

Model Name Using Similar Mechanism CDP-Z97/397
Tape Transport Mechanism Type CDM14~SDB10
Optical Pickup Block Type BU-SBDi o

SPECIFICATIONS
Compact disc player
Laser Semiconductor laser (t = 780 nm)
Wavelength 780 ~- 790 nm
Frequency response 2 HZ to 20 kHz 110.5 dB
Signal-tonoise ratio More than 100 118
Dynamic range More than 98 dB
Harmonic distortion Less than 0.0045%
Channel separation More than 95 dB
Outputs
LINE OUT (phone jacks) Output level 2 V (at 50 kilohms)

Load impedance over10 kilohms
PHONES (stereo phone jack) Output level max, 10 mW
Load impedance 32 ohms

General
Power requirements AEP, Germany models:
220 - 230 V AC, 50/60 HZ
US, Canadian modls :
120 V. 60 Hz
UK, Australian models:
240 V AC, 50 Hz
For other countries:
110-120/220-240 V AC1 adjustable
with the voltage selector. 50/60 Hz
Power consumption 10 W
Dimensions (approx.v including projections)
430 x 100 X 295 mm (w/h/d)
(t 7 x 4 x11 5h inches)
Mass (approx) 3»? k9 (7 lbs 1 OZ)

Remote commander (only for CDPQTI)

Remote control system Infrared control
Power requirements 3 VDC with two R6 (size AA)
batteries

Dimensions (approx, including projections)
40 x 20 x 175 mm (wlh/d)
(1 5/a x Vs x 7 inches)
Mass (approx) 95 g (4 oz)

Supplied accessories
Audio cord (1) (2 phone plugs - 2 phono plugs)
Remote commander (only for CDP~311)

(1)
Sony SUM-3 (NS) batteries (only for GDP-311)

(2)
Plug adaptor (except for European, Canadian and Australian
models) (1)

Design and specifications are subject to change without notice

LllMPACT nisc PLAYER
SON Y;

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SAFETY CHECK-OUT

After correcting the original service problem, perform
the following safety check before releasing the set to the
customer :

Check the antenna terminals, metal trim, metallized
knobs, screws, and all other exposed metal parts for AC
leakage. Check leakage as described below.

LEAKAGE TEST

The AC leakage from any exposed metal part to earth

ground and from all exposed metal parts to any exposed

metal part having a return to chassis, must not exceed

0.5 mA (500 microampers.).

Leakage current can be measured by any one of three

methods.

1. A commercial leakage tester, such as the Simpson
229 or RCA WT-540A. Follow the manufacturers
instructions to use these instruments.

2. A battery-operated AC milliammeter. The Data
Precision 245 digital multimeter is suitable for this
job.

3. Measuring the voltage drop across a resistor by
means of a VOM or battery-operated AC volt-
meter. The limit indication is 0.75V, so analog
meters must have an accurate low-voltage scale.
The Simpson 250 and Sanwa SH-63Trd are
examples of a passive VOM that is suitable. Nearly
all battery operated digital multimeters that have a
2V AC range are suitable. (See Fig. A)

To Expand Metal
Part: on Set

1-.
0.15pF €15) / gala?"
'.__J '

7 Earth Ground

Fig. A. Using an AC voltmeter to check AC leakage.

SAFETY-RELATED COMPONENT WARNINGII

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 PUBLISHED BY SONY.

TABLE OF CONTENTS

Section Title Page
1_ GENERAL ........................................... 4
2. DISASSEMBLY
3. ELECTRICAL BLOCK CHECKING ----------------- B
4. Ic plN DESCRIPTION .............................. g
5. DIAGRAMS
5.1, Block Diagram ................................... 12
5-2. Printed Wiring Boards (New Type) - 15
5%. Schematic Diagram .............................. 19
5-4. Printed Wiring Boards (Former Type) --------- 23
55. Semiconductor Lead Layouts .................... 23
6. EXPLODED VIEWS
6-1. Front Panel Section ~~~~~~~~~~~~~~~~~~~~~~~~~ 29

62. CD Mechanism Section (CDM1475BD10) ' '
6-3. Optical Pick-up Block (BU-SBDIO) ''''''''''' 32

7. ELECTRICAL PARTS LIST -------------------- 33

MODEL IDENTIFICATION

GDP-211
GDP-3H

SONYQ MODEL no W

COMPACT DISC PLAYER

WW

seam No.
MADE IN JAPAN

US. Canadian Model: AC 120V BDHZ 10W
AEP Modeh AC 220-230V ~ SDIBDHZ 10W
Australian Model: AC 240V ~ 50/60Hz
E. Saudi Alabia Model : AC 110-120V, 220-240V,
- 50/ SOHZ IOW

GDP-2H
GDP-311

SONY?) MODEL NO W

COMPACT DISC PLAYER

WW

SEHIAL No.
MADE IN FRANCE

AEP. Germany Model: AC 220-230V - SO/SOHI IOW
UK Model : AC240V - SOIBOHI

ATTENTION AU COMPQSANT AYANT
RAPPORT A LA SECURITE!

LES COMPOSANTS IDENTIEIES PAR UNE MARQUE A
SUR LES DIAGRAMMES SCHEMATIOUES ET LA LISTE DES
PIECES SONT CRITIQUES POUR LA SECURITE DE
FONCTIONNEMENT. NE REMPLACER CES COMPOSANTS
QUE PAR DES PIECES SONY DONT LES NUMERQS SONT
DONNES DANS CE MANUEL OU DANS LES SUPPLEMENTS
PUBLIES PAR SONY.

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