Sony d e 331 service manual

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D-E330/E331

SERVICE MANUAL

Ver 1.0 2002.02

AEP Model

Photo : D-E331

Model Name Using Similar Mechanism D-E350
CD Mechanism Type CDM-3125ER
Optical Pick-up Type BAX-25E

SPECIFICATIONS

System
Compact disc digital audio system
Laser diode properties
Material: GaAlAs
Wavelengthfl =780 nm
Emission duration: Continuous
Laser output: Less than 44.6 uW (This output is the value measured
at a distance of 200 mm from me objective lens surface on the optical
pick-up block with 7 mm aperture. )
Error correction
Sony Super Strategy Cross Interleave Reed
Solomon Code
D-A conversion
l-bit quartz time-axis control
Frequency response
20 - 20 000 Hz :1 dB (measured by JEITA CP-307)
Output (at 4.5 V input level)
Headphones (stereo minijack)
Approx. 1 mW + approx. 1 mW at 16 52
Power requirements
For the area code of the model you purchased, check the upper left
side of the bar code on the package.
- Two LR6 (size AA) batteries: 3 V DC
- AC power adaptor (DC IN 4.5 Vjack):
220 - 230 V, 50/60 Hz

9-873-591-01 Sony Corporation
2002502004 Personal Audio Company
© 2002.02 Pubulished by Sony Engineering Corporation

Dimensions (w/h/d) (without proiecting parts and controls)
Approx. 130.6 x 26.3 X1505 mm
(5 I/txlvmx 6 in.)
Mass (excluding accessories)
Approx. 190 g (6.8 oz)
Operating temperature
5°C - 35°C (41°F - 95°F)

Supplied accessories
For the area code of the model you purchased, check the upper left
side of the bar code on the package.
D-E330
Headphones/earphones (1)
D-E331
AC power adaptor (1)
Headphones/earphones (1)

Design and specifications are subject to change without notice.

PORTABLE CD PLAYER
S 0 NY.

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D-E330/E331

DANGER
Invisible laser radiation when open and interlock failed or defeated.
Avoid direct exposure to beam.

CAUTION

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

Laser component in this product is capable of emitting
radiation exceeding the limit for Class I.

This Compact Disc player is
classified as a CLASS 1 LASER
product.

The CLASS 1 LASER
PRODUCT label is located on
the rear exterior.

CLASS 1 LASER PRODUCT
LUOKAN 1 LASERLAITE

KLASS 1 LASERAPPARAT

Flexible Circuit Board Repairing

' Keep the temperature of the soldering iron around 270°C during
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.

Notes on chip component replacement

' Never reuse a disconnected chip component.

. Notice that the minus side of a tantalum capacitor may be dame
aged by heat.

TABLE OF CONTENTS
Specifications ............................................................................ 1
1. SERVICING NOTES ................................................... 3
2. GENERAL
Locating the Controls ......................................................... 3

3. DISASSEMBLY
3»l. Cabinet (Lower), MD ASSY .
372. Main Board .........................
373. Motor ASSY, Turn Table (Spindle) (M90l)
374. Motor ASSY (Spindle) (M902),
Optical Pickiup (DAX-ZSE) ...................................... 5

4. ELECTRICAL ADJUSTMENS ............................... 6

5. DIAGRAMS
5»l. Explanation of IC Terminals
572. Block Diagram ......
53. Printed Wiring Board
5-4. Schematic Diagram iMAIN SECTION (1/3)7
55. Schematic Diagram iMAIN SECTION (2/3)7
56. Schematic Diagram iMAIN SECTION (3/3}

6. EXPLODED VIEWS
6*]. Cabinet Section .....
672. Optical pickeup Section (CDM-3125ER)

7. ELECTRICAL PARTS LIST ................................... 18

SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY MARK A 0R DOTTED LINE
WITH MARK A ON THE SCHEMATIC DIAGRAMS AND IN THE
PARTS LIST ARE CRITICALTO SAFE OPERATION.

REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE
PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN
SUPPLEMENTS PUBLISHED BY SONY.