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Car Stereo CSA-14
Service Bulletin
Sony Service Company - Technical Services
A Division of Sony Electronics Inc.
Sony Drive, Park Ridge, New Jersey 07656
Model: MDX-U1 No. 341
Subject: Skipping Or Will Not Read Discs Due To Road Date: November 18, 1994
Induced Vibrations.
Symptom:
(51) Road vibrations cause the unit to skip, or in some instances may cause the disc to be
ejected, with the word "ERROR" appearing on the display.
Solution: This problem may be caused by early versions of MD boards. If the customer
complains of this problem, identify the version of IC514 mounted on the MD board. If
the version is less than "uPD78136GF-031-3B9" replace the MD board. The new
MD boards have the same part number as the originals, but are mounted with the
improved version of IC514.
If the customer's unit already contains version "uPD78136GF-031-3B9", use standard
troubleshooting methods to correct the problem.
Note 1: The boards being shipped from the National Parts Center are not factory
adjusted, and therefore must have all adjustments performed as shown in the service
manual.
Note 2: The original MD board cannot be upgraded by changing IC514 to the
improved version.
REF DESCRIPTION PART NUMBER
201 MD BOARD, COMPLETE A-3222-496-A
Applicable Serial Numbers: up to 16,500
Reference: SEC Bulletin CS00994 PRINTED IN USA
Autoflagged - NO
PRINTED ON RECYCLED PAPER
Audio Products Service Bulletin No. xxx
Filename: CAR0341.SB
Directory: J:\SBDOC\NOV94
Template: C:\WINWORD\S_BULL.DOT
Title:
Subject:
Author: Hoyt Wing Lee
Keywords:
Comments:
Creation Date: 11/18/94 2:46 PM
Revision Number: 2
Last Saved On: 11/18/94 2:46 PM
Last Saved By: Hoyt Wing Lee
Total Editing Time: 0 Minutes
Last Printed On: 04/01/96 10:01 AM
As of Last Complete Printing
Number of Pages: 2
Number of Words: 228 (approx.)
Number of Characters: 1,303 (approx.)