Service Manuals, User Guides, Schematic Diagrams or docs for : Sony sony tv bulletins sony tv bulletins TVP0484

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

Model:         KP-53XBR300, KP-53HS10                                             No.       484R2
               KP-61HS10, KP-61XBR300

Subject: AKB Error When First Turned ON                                           Date: August 1, 2001


 Symptom:
  (2311)             When the unit is first turned on from cold start the LED flashes 5 times at first power-
                     ON, and no picture is received. If turned OFF and then ON again picture is present.
                     Unit will play the rest of the day without any problem.

Solution:            If the customer should complain of the symptom above please perform the following
                     circuit changes to the BD Board.

                     Note 1: Some BD boards had countermeasures applied at the factory. These
                     boards do not need to be reworked in the field. See illustrations 1 through 3 for
                     identifying the boards that have had countermeasures applied at the factory.

             Carefully peel up the coper tape
             on the side edge of the board.                            Lift up the shield from the board, using the
                                                                       long copper tape as a hinge.




                               Illustration 1




                                                                                  Illustration 2




                                                               Factory-reworked boards have a 10K chip
                                                               resistor mounted near R1924; no further
                                                               rework is necessary.


                                 Illustration 3


 Reference: SBR9912                                                                                    PRINTED IN USA
TV Products Service Bulletin No. 484R2



               Note 2: The specific procedure depends on whether or not the original service
               bulletin had been performed previously.
               

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