Service Manuals, User Guides, Schematic Diagrams or docs for : Sony HiFi Service Bulletin HFP0415

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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:      MDS501                                                          No.    415
Subject: The unit won't play a Minidisc                                     Date: October 13, 1994


Symptom:
  (51)          The MDS501 won't play a disc due to a defective ATRAC decoder and/or defective
                Shockproof memory controller IC.



Solution:       Improved ATRAC decoders and Shock proof Memory Contoller IC's are available.
                The improved ICs can be identified by the date/lot number information printed on the
                IC. The information takes the form of a code which uses the year/week/"A"/lot#/"E".
                A code that is read 407A51E would mean the IC was manufactured in 1994, in the
                07th week. The "A" has no special meaning. The 51 after the "A" is the lot number.
                Like the "A", the "E" has no special meaning in this code structure, these letters can
                be found in all different versions of these IC's.

                For IC101, the ATRAC Decoder IC type CXD2531/AR/BR, the improved ICs have
                date/lot codes of "412A83E" and later.

                For IC110, the Shock proof Memory Controller IC, type CXD2526AR, the improved
                ICs have date/lot codes of "412A26E" and later.




Reference: Info from AU-QE group                                                                 PRINTED IN USA
Autoflagged - NO
                                                PRINTED ON RECYCLED PAPER
Audio Products Service Bulletin No. xxx
Filename:                HFP0415.SB
Directory:               J:\SBDOC\OCT94
Template:                C:\WINWORD\S_BULL.DOT
Title:                   MDS501
Subject:                 The unit won't play a Minidisc
Author:                  Hoyt Wing Lee
Keywords:
Comments:
Creation Date:           10/13/94 9:26 AM
Revision Number:         2
Last Saved On:           10/13/94 9:26 AM
Last Saved By:           Hoyt Wing Lee
Total Editing Time:      0 Minutes
Last Printed On:         04/01/96 10:28 AM
As of Last Complete Printing
     Number of Pages:    2
     Number of Words: 211 (approx.)
     Number of Characters:        1,206 (approx.)

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