Read Sony DSC-P3 (serv.man2) Service Manual online
5-38
DSC-P3
10. V-COM Adjustment (SY-73 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.
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 the LCD screen
Measuring Instrument
Adjustment Page
D
Adjustment Address
D8
Specified Value
The brightness difference
between the section-A and
section-B is minimum
between the section-A and
section-B is minimum
Note 1:
Perform “Bright Adjustment” and “Contrast Adjusstment”
before this adjustment.
before this adjustment.
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
2
4
F1
02
3
4
10
02
4
D
D8
Change the data so that
brightness of the section A
and section B is equal.
brightness of the section A
and section B is equal.
5
D
D8
Read the data and this data is
named Dref.
named Dref.
6
Convert Dref to decimal
notation, and obtain Dref’.
(Note 2)
notation, and obtain Dref’.
(Note 2)
7
Calculate D
D8
’ using
following equations.
(decimal calculation)
D
(decimal calculation)
D
D8
’ = Dref’ – 13
8
Convert D
D8
’ to a hexadeci-
mal number, and obtain D
D8
.
(Note 2)
9
D
D8
D
D8
Press PAUSE button.
Note 2:
Refer to table 5-2-2. “Hexadecimal-decimal conversion
table”.
Processing after Completing Adjustments:
Order Page Address Data
Procedure
1
4
F1
00
2
4
10
00
3
0
01
00
Fig. 5-1-26
A
A
A
A
B
B
B
B
11. White Balance Adjustment (SY-73 Board)
Correct the white balance.
If deviated, the LCD screen color cannot be reproduced.
If deviated, the LCD screen color cannot be reproduced.
Mode
PLAY
Signal
Arbitrary
Measurement Point
Check on the LCD screen
Measuring Instrument
Adjustment Page
D
Adjustment Address
D2, D3
Specified Value
LCD screen must not be colored
Note 1:
Check the white balance only when replacing the fol-
lowing parts. If necessary, adjust them.
lowing 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
0
01
01
2
4
F1
02
3
D
D2
60
Press PAUSE button.
(Intital value)
(Intital value)
4
D
D3
AA
Press PAUSE button.
(Intital value)
(Intital value)
5
Check that the LCD screen is
not colored. If not colored,
proceed to “Processing after
Completing Adjustments”.
not colored. If not colored,
proceed to “Processing after
Completing Adjustments”.
6
D
D2
Change the data so that the
LCD screen is not colored.
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.
the PAUSE button each time to set the data.
Processing after Completing Adjustments:
Order Page Address Data
Procedure
1
4
F1
00
2
0
01
00
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