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TVP0255


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                               TV Products                                                           CSV-1
                               Service Bulletin
                                Sony Service Company - Technical Services
                                A Division of Sony Electronics Inc.
                                Sony Drive, Park Ridge, New Jersey 07656


Model: KV-27TW77                                                            No.     255
Subject: Part Number of the Mounted Board                                   Date: June 23, 1995


Symptom:
  ()          This model is using different versions of the circuit board. When ordering a
              replacement board, please check serial number of the unit and chart below
              to match the correct part number.

Serial Number and Mounted Board Chart

               Serial Number       70000017000022                        70000237026262    7026263 and above
                               AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
                                                           AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
                                                           AA                          AA
                                                                                        A
                Board Name           Part Number                          Part Number         Part Number

                  A Board            A-1297-065-A                          A-1297-065-A       A-1297-432-A
                                    (A-1297-432-A)                        (A-1297-432-A)     (A-1297-065-A)

                  U Board            A-1394-415-A                         A-1394-415-A       A-1394-415-A

                  H Board            A-1371-883-A                         A-1371-883-A       A-1370-020-A

                  D Board            A-1346-129-A                         A-1346-129-A       A-1346-192-A

                  M Board            A-1306-427-A                          A-1306-427-A      A-1306-470-A
                                    (A-1306-434-A)                        (A-1306-434-A)

                  P Board            A-1195-062-A                         A-1195-062-A       A-1195-062-A

                  C Board                 1                                    1             A-1331-351-A
                                     A-1331-264-A                         A-1331-313-A

Example:      If two part numbers are listed in the same column, the upper number is
              original part number and bottom is the substitution number.

              If you have a model of serial number 7000023 and requires an M board, you
              can use A-1306-434-A instead of original board A-1306-427-A.
              If you need D Board for a model of Serial number 7000023, please use A-1346-
              129-A (original part number only).

Note 1:       Please refer to the other Service Bulletin #195, New C board with no H-STAT
              control.



Reference: M. Matsuoka                                                                            PRINTED IN USA
Autoflagged - YES
                                             PRINTED ON RECYCLED PAPER
Audio Products Service Bulletin No. xxx
Filename:             TVP0255.SB
Directory:            J:\SBDOC\JUN95
Template:             C:\WINWORD\TEMPLATE\S_BULL.DOT
Title:
Subject:
Author:               Hoyt Wing Lee
Keywords:
Comments:
Creation Date:        06/23/95 2:43 PM
Revision Number:      2
Last Saved On:        06/23/95 2:43 PM
Last Saved By:        Hoyt Wing Lee
Total Editing Time:   0 Minutes
Last Printed On:      04/01/96 9:27 AM
As of Last Complete Printing
    Number of Pages: 2
    Number of Words: 255 (approx.)
    Number of Characters:    1,457 (approx.)



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