Sony KP-57XBR10W Service Bulletin page 8

TV Products Service Bulletin No. 531
Start with the Normal Mode (this will also adjust the Full mode simultaneously. Full and
Normal modes share the same adjustment data). Special Geometry adjustments are
required in Normal mode (4:3 mode with gray bars on sides):
1. Touch up top and bottom areas where the gray bars begin. Adjust these areas as
needed in the fine adjustment mode (see Fine Mode Adjust in the Reference
Section), green first, followed by red and blue. This will ensure gray bar edges are
straight in 4:3 mode. The inboard edges of the gray bars should be completely
straight, top to bottom. See following illustrations:
Close-up showing the bending at top right
corner
2. Change Normal mode to FULL mode and adjust all four corners to straighten out
vertical lines at the sides of the screen.
3. Also adjust the convergence as needed in all modes. Pay special attention to center
outside areas.
4. While still in the Fine adjust Mode, write the data into memory and then activate
Flash Focus on the front of the set.
Check / Adjust Wide Zoom Mode: If the mode checks OK, continue to other modes, if not,
please adjust in Fine Mode and Write the data into memory and then activate Flash Focus
on the front of the set.
Very Important:
If Wide Zoom mode needs to be adjusted and data is written into memory, the set
will automatically resets VSCO in category VDSP to 0 FOR ALL MODES. Wide
Zoom mode uses data 0 for VSCO, however, you must manually set the data back
to 7 in ALL the other modes or else the vertical size adjustment will be incorrect.
Check / Adjust Zoom Mode: If the mode checks OK, continue to other modes, if not,
please adjust in Fine Mode and Write the data into memory and then activate Flash Focus
on the front of the set.
Check / Adjust the 1080i Mode: To be able to check and adjust this mode, you must either
have a 1080i video signal or a 1080i generator. If you do not have either of these, you
cannot perform this adjustment, therefore proceed to the next adjustment. If you do have
either one of these items, then proceed with this adjustment.
Gray bars on each side of picture