Sony d ej 775 service manual

Page 1

D-EJ775

SERVICE MANUAL

Ver 1.2 2002.09

Canadian Model
AEP Model

UK Model

E Model
Australian Model
Chinese Model
Tourist Model

System
Compact disc digital audio system

Laser diode properties

Material: GaAlAs

Wavelength: A: 780 nm

Emission duration: Continuous

Laser output: Less than 44.6 MW

(This output is the v alue measured at a distance
of 200 mm from the objective lens surface on
the optical pickeup block with 7 mm aperture.)

D-A conversion
lebit quartz timeaaxis control

Frequency response
40 » 20 000 Hz: dB (measured by JEITA CP-
307)

Output (at 4.5 V input level)

Headphones (stereo minijack)
Approx. 5 mW + Approx. 5 mW at 16 9
(Approx. 0.5 mW + Approx. 0.5 mW at 16 Q)*
*For the customer 5 in France

Power requirements

For the area code of the model you

purchased, check the upper left side of the

bar code on the package.

Two Sony NC~WMAA rechargeable

batteries: 2.4 V DC

Sony NH-WMZAA rechargeable batteries:

2.4 V DC

Two LR6 (siLe AA) batteries: 3 V DC

- AC power ada ptor (DC lN 4.5 Vjack):
Canadian and Taiwan models:

120 V, 60 Hz
9-873-592-03 Sony Corporation
2002i0500-1 Personal Audio Company
© 2002.09

Published by Sony Engineering Corporation

Model Name Using Similar Mechanism D-EJ955

CD Mechanism Type

CDM-3325ES

Optical Pick-up Name

BAX-25E

SPECIFICATIONS

AEP and E13 models:

220 - 230 V, 50/60 Hz

UK model: 230 , 240 V, 50 HZ

Australian model: 240 V, 50 HA

Tourist, E33 and Korean models: 100 - 240 V.
50/60 Hz

Hong Kong model: 220 V 50/60 Hz
Chinese model: 220 V, 50 HL

Battery |ite* (approx. hours)

(When you use the CD player on a flat and stable
surface.)

Playing time varies depending on how the CD
player is used.

When using G-PHOTECTIDN lunclinn
on all
'I\ivo NCAWMAA 12 8

(charged for
about 3 hours)

NHrWMZAA 22 17
(charged for

about 5 hours)

Two Sony alkaline 41 29
batteries LR6(SG)

(produced in Japan)

* Measured iaiue by the standard of JElTA (Japan
Electronics and Information Technology
Industries Association).

Charging time varies depending on how the

rechargeable battery is used.

Operating temperature
5°C A 35°C (41°F » 95°F)

Dimensions (w/hld) (exduding
proiecting parts and controls)
Approx. 136.0x19.8 x1360 mm
(5 3A: XZS/IZ x 5 3/s in.)

Mass (exduding accessories)
Approx. 160 g (5.7 oz.)

Supplied accessories

For the area code of the location in which you
purchased the CD player. check the upper left side
of the bar code on the package.

AC power adaptor (1)

Headphones/earphones with remote control (1)
Rechargeable batteries (2)

Battery carrying case (1)

AC plug adaptor (1)

*1 Supplied with Tourist and E33 models

Design and specifications are subject to chang e
without notice.

- Abbreviation
E13: 220 , 230 V AC area in E model
E33: 100 , 240 V AC area in E model

PORTABLE CD PLAYER
S O NY®

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D-EJ775

577.

578.

579.

5-10.

5-16.

5717.

5-18.

5719.

TABLE OF CONTENTS

SERVICING NOTES ..

GENERAL ..

DISASSEMBLY
Disassembly Flow
Lid Upper Sub Assy .
Plate (Spring) ...........
Cabinet (Upper) Sub A y .
Main Board, Optical Pick7up Section

\Ixicncn

(CDM73325ES) ............................................................... 8
ELECTRICAL ADJUSTMENTS ......................... 9
DIAGRAMS

Block Diagram 7 Servo Section 7 . ...................... 11

Block Diagram 7 AUDIO/KEY CONTROL/
POWER SUPPLY Section 7. .. 12
Note for Printed Wiring Boar

Schematic Diagrams ............................................. 13

Printed Wiring Boards 7 MAIN (Component Side)

(Suffix-l l)/SUB Boards 7 .............................................. 14

Printed Wiring Board 7 MAIN Board

(Conductor Side) (Suffix-1 1) 7 ....................................... 15

Schematic Diagram 7 MAIN (1/3)

(Suffix-l l)/SUB Boards 7 .............................................. l6

Schematic Diagram 7 MAIN Board (2/3)

(Suffix-ll)7.. ........................................................ l7

Schematic D' gram 7 MAIN Board (3/3)

(Suffix-ll)7.. ........................................................ 18

Schematic Diagram 7 MAIN Board (1/3)

(Suffix-l2)/SUB Boards 7 ........................................... 19

Schematic Diagram 7 MAIN Board (2/3)

(Suffix7l2) 7.. ................................ 20
. Schematic Diagram 7 MAIN Board (3/3)

(Suffix-l2) 7 ......................................................... 21
. Printed Wiring Board 7 MAIN (Component Side)

(Suffix-l2)/SUB Boards 7 .............................................. 22

.. Printed Wiring Board 7 MAIN Board

(Conductor Side) (Suffix-12) 7 ....................................... 23
. Printed Wiring Board 7 MAIN Board

(Component Side) (SuffixA13) 7 ..................................... 24
. Printed Wiring Board 7MAIN Board

(Conductor Side) (Suffix-13) 7 ....................................... 25

Schematic Diagram 7 MAIN Board (1/3)

(Suffix-l3) 7 ................................ 26

Schematic Diagram 7 MAIN Board (2/3)

(Suffix-l3) 7 ................................ 27

Schematic Diagram 7 MAIN Board (3/3)
(Suffix-l3) 7 ......
IC Pin Function De. ription ........................................... 30

EXPLODED VIEWS
Cabinet Section .
Main Section
Optical Pickup Section (CDM73325ES) .

ELECTRICAL PARTS LIST ............................... 35

On AC poweradaptor

- Use only the AC power adaptor supplied or
recommended in "Accessories (stipplied/
optional) Do not use any other AC power
adaptor. It may cause a malfunction.

Polarity at the plug
._6
M

Notes on chip component replacement

- Never reuse a disconnected chip component.

' Notice that the minus side of a tantalum capacitor may be dam-
aged by heat

Flexible Circuit Board Repairing

- Keep the temperature of the soldering iron around 270 C dur-
ing repairing.

- Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).

- Be careful not to apply force on the conductor when soldering
or unsoldering.

CAUTION

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

This appliance is classified as a CLASS 1 LASER product.
The CLASS 1 LASER PRODUCT MARKING is located on
the rear exterior.

CLASS I LASER PRODUCT
LUOKAN 1 LASERLAITE

KLASS 1 LASERAPPARAT

SAFETY-RELATED COMPONENT WARNINGI!

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.

ATTENTION AU COMPOSANT AYANT RAPPORT
A LA SECURITEI

LES COMPOSANTS IDENTIFIES PAFI UNE MARQUE A
SUR LES DIAGRAMMES SCHEMATIQUES ET LA LISTE
DES PIECES SONT CRITIQUES POUR LA SECURITE
DE FONCTIONNEMENT. NE REMPLACER CES com-
POSANTS QUE PAR DES PIECES S0Nv DONT LES
NUMERos SONT DONNES DANS CE MANUEL ou
DANS LES SUPPLEMENTS PUBLIES PAR SONY.