V-Com Adjustment (Fc-85 Board); White Balance Adjustment (Fc-85 Board) - Sony MVC-FD97 Service Manual
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Also See for MVC-FD97:
- Operating instructions manual (92 pages) ,
- Limited warranty (1 page)
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8. V-COM Adjustment (FC-85 Board)
Set the DC bias of the common electrode drive signal of LCD to
the specified value.
If deviated, the LCD display will be move, producing flicker and
conspicuous vertical lines.
Mode
PLAY
Signal
Arbitrary
Measurement Point
Check on LCD screen
Measuring Instrument
Adjustment Page
D
Adjustment Address
D8
Specified Value
The brightness difference
between the section-A and
section-B is minimum
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
2
5
F1
02
3
2
10
02
Change the data so that the
4
D
D8
brightness of the section A and
section B is equal.
5
D
D8
Press PAUSE button.
Processing after Completing Adjustment:
Order Page Address Data
Procedure
1
5
F1
00
2
2
10
00
3
0
01
00
A
B
A
B
B
A
A
B
Fig. 5-1-34
9. White Balance Adjustment (FC-85 Board)
Correct the white balance.
If deviated, the LCD screen color cannot be reproduced.
Mode
PLAY
Signal
Arbitrary
Measurement Point
Check on LCD screen
Measuring Instrument
Adjustment Page
D
Adjustment Address
D2, D3
Specified Value
LCD screen must not be colored
Note: Check the white balance only when replacing the follow-
ing parts.
If necessary, adjust them.
1. LCD panel
2. Light induction plate
3. IC902
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
2
5
F1
02
Press PAUSE button. (Initial
D2
A8
3
D
value)
D3
80
(Note 2)
Check that the LCD screen is not
colored, If not colored, proceed to
4
“Processing after Completing
Adjustments”
Change the data and so that the
D2
5
D
LCD screen is not colored.
D3
(Note 2)
Note 2: To write in the non-volatile memory (EEPROM), press
the PAUSE button each time to set the data.
Processing after Completing Adjustment:
Order Page Address Data
Procedure
1
5
F1
00
2
0
01
00
5-47
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