Sony d e 331 service manual

Page 2

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.