White Balance Adjustment (Pk-65/66 Board) - Sony MVC-CD250 Service Manual

MVC-CD250/CD400

9. White Balance Adjustment (PK-65/66 Board)

Correct the white balance.
If deviated, the LCD screen color cannot be reproduced.
Mode
Signal
Measurement Point
Measuring Instrument
Adjustment Page
Adjustment Address
Specified Value
Note 1: Check the white balance only when replacing the
following parts. If necessary, adjust them.
1. LCD panel
2. Light induction plate
3. IC301
Adjusting method:
Order Page Address Data
1 0 01
2 A 02
3 4 F1
4 A 88
4 A 89
5
6 A 88
89
Note 2: To write in the non-volatile memory (EEPROM), press
the PAUSE button each time to set the data.
Processing after Completing Adjustments:
Order Page Address Data
1 A 02
2 4 F1
3 0 01
PLAY
Arbitrary
Check on LCD screen
A
88, 89
LCD screen must not be colored
Procedure
01
03 Press PAUSE button.
02
Set the following data, and
press PAUSE button. (Initial
value)
MVC-CD400: 8A
MVC-CD250: 7C
Set the following data, and
press PAUSE button. (Initial
value)
MVC-CD400: 5A
MVC-CD250: 6F
Check that the LCD screen is
not colored. If not colored,
proceed to "Processing after
Completing Adjustments".
Change the data so that the
LCD screen is not colored.
(Note 2)
Procedure
00 Press PAUSE button.
00
00
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