Table of Contents
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Purpose of this manual
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Contents
HDW-250
Manual Structure
This manual is the maintenance manual of the HD Digital Video Cassette Recorder
HDW-250.
This manual describes the maintenance information and the information on primary
services such as the replacement of main blocks and circuit board of the HDW-250.
In addition to this Maintenance Manual Volume 1, the following manuals are
provided.
. . . . . Operation Manual (supplied with HDW-250)
This manual describes how to operate the HDW-250.
. . . . . Maintenance Manual Volume 2 (available on request)
This manual describes the information that premise the service based on parts
replacement (diagnostics, parts replacement, electrical alignment, and circuit
descriptions, etc.)
If this manual is required, please contact your local Sony Sales Office/Service
Center.
The following is a summary of all the sections for understanding the contents of this
manual.
Section 1
Service Overview
Explains the locations of main parts, the functions of printed circuit boards, how to
remove and install the cabinet, and measures against trouble.
Section 2
Error Messages and Error Logs
Explains the error messages and error logs.
Section 3
Maintenance Mode
Explains the maintenance mode of the HDW-250.
Section 4
Block Diagram and Circuit Description
Describes the overall block diagrams and circuit descriptions.
Section 5
Periodic Maintenance and Inspection
Explains the cleaning procedures and periodic checks.
Section 6
Spare Parts
Describes exploded views for the HDW-250 and lists of the mounted/printed circuit
boards.
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Table of Contents
