Read Sony DSC-S75 (serv.man4) Service Manual online
5-34
Fig. 5-1-24
A
2H
8. V-COM Level Adjustment (SY-68 Board)
Set the common electrode drive signal level of LCD to the speci-
fied value.
fied value.
Mode
PLAY
Signal
Arbitrary
Measurement Point
Pin 8 of CN401
(PANEL_COM)
(PANEL_COM)
Measuring Instrument
Oscilloscope
Adjustment Page
D
Adjustment Address
D6
Specified Value
A = 5.42 ± 0.05 Vp-p
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
2
D
D6
Change the data and set the
VCOM signal level (A) to the
specified value.
VCOM signal level (A) to the
specified value.
3
D
D6
Press PAUSE button.
Processing after Completing Adjustment:
Order Page Address Data
Procedure
1
0
01
00
Fig. 5-1-25
A
A
A
A
B
B
B
B
9. V-COM Adjustment (SY-68 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:
Perform “Bright Adjustment” and “Contrast Adjustment”
before this adjustment.
before this adjustment.
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
2
4
F1
01
3
4
10
02
4
D
D8
Change the data so that the
brightness of the section A and
section B is equal.
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
4
F1
00
2
4
10
00
3
0
01
00
Ver. 1.2 2001. 08
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