Service Manuals, User Guides, Schematic Diagrams or docs for : Sony sony tv bulletins sony tv bulletins TVP0466

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                                           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:          VPL-W400Q                                                           No.        466
Subject: RM-JM500 Remote Freeze                                                     Date: February 2, 2000


Symptom:
 (1151)                When the remote controller RM-PJM500 is wired using a stereo mini-jack cable, the
                       remote controller sometimes may not operate.
                       Note: This symptom does not occur when the remote is used in a wireless or
                       monaural configuration.

                                            Serial Number Range Affected

                                                  2,000,001-2,002,640



Solution:              If the customer should complain of this symptom then perform the following:

                       To correct this condition, solder additional Zener diodes to the remote controller
                       board.

                       1.      Remove battery cover in direction of arrow shown in Figure 1.

                       2.      Remove screws securing bottom cover.




                                                       Fig1




Reference: SB B&P 301998-274                                                                          PRINTED IN USA
TV Products Service Bulletin No. 466


                 3.    Slide bottom cover in direction of arrow in Figure 2, and remove cover to
                       access remote controller board as shown in Figure 3.

                          Fig 2




                 4.    Solder cathode of Zener diode to K of diode D12, and solder anode of Zener
                       diode to negative polarity of capacitor C4, as shown in Figure 3, inset.




                 5.    Apply RTV to secure Zener diode to board as shown.



                           Description              Part Number             Qty.

                       RD5.6ESB1 (NEC)              8-719-109-88              1

                          RD 5.6ESB2                8-719-109-89              1
                            (NEC)

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