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Hi-Fi Products CSA-13
Service Bulletin
Sony Service Company - Technical Services
A Division of Sony Electronics Inc.
Sony Drive, Park Ridge, New Jersey 07656

Model: MHC-C33, MHC-C55 No. 453
Subject: R503, R504 NEW VALUES Date: October 26, 1995

Symptom: Discs Jam, or the Unit May Fail to Identify Discs Properly
(165)

Solution: If a customer complains of this symptom, replace R503 and R504 (on the O/C SW
board) with new values to improve the disc detector sensitivity.

REF FORMER NEW
DESCRIPTION PART NUMBER DESCRIPTION PART NUMBER

R503 300 , 1-247-818-11 180 , 1-247-813-81
R504 15K , 1-249-431-11 33K , 1-247-867-81

Note: Units manufactured since June 94 include the new resistors. The serial
number range is listed below.

MHC-C33 807075 and up

MHC-C55 827030 and up

Reference: FPR- Q1330 PRINTED IN USA

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Filename: HFP0453.SB
Directory: J:\SBDOC\OCT95
Template: C:\WINWORD\TEMPLATE\S_BULL.DOT
Title:
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Author: Hoyt Wing Lee
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Creation Date: 10/26/95 11:01 AM
Revision Number: 2
Last Saved On: 10/26/95 11:01 AM
Last Saved By: Hoyt Wing Lee
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Last Printed On: 04/01/96 10:47 AM
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