Read Sony DSC-P52 (serv.man4) Service Manual online
6-36
DSC-P52
7. V COM Adjustment (SY-91 board)
Set the DC bias of the common electrode drive signal of LCD to the
specified value.
If deviated, the LCD display will move, producing flicker and
conspicuous vertical lines.
Set the DC bias of the common electrode drive signal of LCD to the
specified value.
If deviated, the LCD display will move, producing flicker and
conspicuous vertical lines.
Mode
PLAY (
)
Signal
Arbitrary
Measurement Point
Check on LCD display
Measuring Instrument
Adjustment Page
4F
Adjustment Address
84
Specified Value
The brightness difference between the
section A and section B is minimum.
section A and section B is minimum.
Note1: Perform “Bright Adjustment” and “Contrast Adjustment” before
this adjustment.
Adjusting method:
Order Page Address Data
Procedure
1
00
01
01
Set the data.
2
40
F1
82
Write the data.
3
4F
02
03
Write the data.
4
4F
84
Change the data so that the
brightness of the section A and
that of the section B is equal.
(Note2)
brightness of the section A and
that of the section B is equal.
(Note2)
5
4F
84
Write the data.
6
4F
02
00
Write the data.
7
40
F1
00
Write the data.
8
00
01
00
Set the data.
Note2: The data should be “40” to “7F”.
8. White Balance Adjustment (SY-91 board)
Correct the white balance.
If deviated, the LCD screen color cannot be reproduced.
Correct the white balance.
If deviated, the LCD screen color cannot be reproduced.
Mode
PLAY (
)
Subject
Arbitrary
Measurement Point
Check on LCD display
Measuring Instrument
Adjustment Page
4F
Adjustment Address
88, 89
Specified Value
The LCD screen should not be colored.
Note1: Use the AC power adaptor during this adjustment.
Note2: Check the white balance only when replacing the following parts.
Note2: Check the white balance only when replacing the following parts.
If necessary, adjust them.
1. LCD panel
2. Light induction plate
3. IC801
2. Light induction plate
3. IC801
Adjusting method:
Order Page Address Data
Procedure
1
00
01
01
Set the data.
2
40
F1
0A
Write the data.
3
4F
02
03
Write the data.
4
4F
88
8D
Write the data.
5
4F
89
59
Write the data.
6
4F
88
Check that the LCD screen is
not colored. If not colored,
proceed to step 12.
not colored. If not colored,
proceed to step 12.
7
4F
88
Change the data so that the LCD
screen is not colored.
screen is not colored.
8
4F
88
Write the data.
9
4F
89
Change the data so that the LCD
screen is not colored.
screen is not colored.
10
4F
89
Write the data.
11
4F
89
If the LCD screen is colored,
repeat steps 7 to 11.
repeat steps 7 to 11.
12
4F
02
00
Write the data.
13
40
F1
00
Write the data.
14
00
01
00
Set the data.
Fig. 6-1-20.
A
A
A
A
B
B
B
B
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