Service Manuals, User Guides, Schematic Diagrams or docs for : Sony sony tv bulletins sony tv bulletins TVP0552
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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: KV-20FV12, KV-24FV12, KV-27FS12 No. 552
KV-27FS16, KV-27FV16, KV-32FS12
KV-32FS16
Subject: No audio or video after replacing the A or K Date: November 5, 2001
Board
Symptom:
(1510) During production there were circuit changes made to both the A & K boards. The
part numbers for these boards were not changed. If either the A or K board are
replaced the loss of both audio and video may occur.
Solution: When a new board is received from WRPC the board suffix, see (Fig 1) for board
location, must be checked. See the table below for compatablity between boards.
Location of the
suffix number
on the A Board
Fig 1
A Board suffix numbers K Board suffix numbers Conditions
1-677-295-11 1-678-026-11 You can use without any modifications
1-677-295-22
1-677-295-41 1-678-026-12 You can use without any modifications
1-677-295-51 1-678-026-13
1-677-295-61 1-678-026-21
1-678-026-22
1-677-295-11 1-678-026-12 You have to remove the jumpers JW215 & JW216 on
1-677-295-22 1-678-026-13 the A board, if you are replacing the K board with one
1-677-295-31 1-678-026-21 of the suffix numbers listed in the chart.
1-678-026-22 If when replacing the A board there is a compatibility
problem, see chart, you will need to add the jumpers
JW215 & JW216 to the A board. (See Fig 2)
Continue on the next page
Reference: ECN KV-C03599, KV-C03511 PRINTED IN USA
TV Products Service Bulletin No. 552
Location of jumpers
JW215 & JW216 on
the A board
Fig 2
Change in function operation on connector CN405/pin 15 & 16
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