Sony CDU31A Series Service Manual page 4

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Table of Contents
SECTION 1
INTRODUCTION
1·1 CONFIGURATION OF SERVICE MANUAL
This manual is a maintenance guide for model CDU31A
series.
SECTION 2 describes disks and tools necessary for
maintenance.
SECTION 3 provides fault diagnostic procedures that may
require spare pans or some adjustments.
The overall check after removal and adjustments will be
included in this section.
SECTION 4
and 5 cover parts
replacement and
adjustments, respectively.
SECTION 6 consist of circuit diagrams, ass'y drawings,
and parts lists.
1-2 CAUTION
Caution:
As the laser beam used in this drive is harmful to
the eyes, do not attempt to disassemble the
cabinet. Refer servicing to qualified personnel
only.
Caution:
This CD-ROM drive is classified as a CLASS
I
LASER
product.
The CLASS
I
LASER
PRODUCT label is located on the case.
1 ·3 PRECAUTIONS
1-3-1 Installation
a.
Avoid placing the drive in a location subject to:
high humidity
high temperature
excessive dust
mechanical vibration
direct sunlight
b.
This drive can be used horizontally only.
1-1
1-3-2 Operation
a.
Do not move the drive while it is operating. Doing so
may cause a malfunction to occur.
b.
A void exposing the drive to sudden changes in
temperature. This may cause condensation to collect
inside the drive. If the ambient temperature should
suddenly rise while the drive is turned on, wait at least
one hour before turning off the drive. If you attempt to
operate the drive immediately after a sudden increase
in temperature, a malfunction may occur during
reading.
1-3-3 Transportation
a.
Keep the original packing materials to facilitate
transporting the drive.
b.
Always remove the disc before moving the drive.
After removing the drive from the computer, repack
the drive into its original packing.
1-4 INTRODUCTION
a.
CDU31A series is a drive unit for CD-ROM (Compact
Disc Read-Only Memory) discs, which store as much
as 540 Mbytes of digital data.
b.
The drive unit offers the following features:
- 5.25 inch half-height drive form factor.
- Audio output to enable Audio CD playback.
-Audio channel selectable by software (stereo,
monaural, reverse, etc.)
- Fast access time providing high-speed read
operation.
- Real time layered error correction.
- Emergency eject function for manual disc
ejection.
-CD-ROM XA, CD Bridge disc and CD-I disc
play.
Software requirement:
-To read data reading of the data stored on a disc,
install the appropriate application software.
-To read data from CD-ROM discs with the High
Sierra Group (HSG) or IS0-9660 logical format,
you can use Sony OPA-474 series MS-DOS
CD-ROM Extensions. This software extends
MS-DOS*. It is designed for use on IBM
PC/ATs**
*
MS-DOS
is
registered trademark of Microsoft
Corporation.
**
IBM PC, PC/ST, and PC/AT are registered trademarks
of International Business Machines Corporation.

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