Read Sony DSC-F77 / DSC-FX77 (serv.man3) Service Manual online
DSC-F77/FX77
6-37
Fig. 6-1-19
2H
Pedestal
Pedestal
A
A: Between the reversed waveform pedestal and non-reversed
waveform pedestal
5.
Bright Adjustment (SY-81 Board)
Set the amplitude of the RGB decoder for driving the LCD to the
specified value.
If deviated, the LCD screen image will be blackish or saturated
(whitish).
specified value.
If deviated, the LCD screen image will be blackish or saturated
(whitish).
Mode
PLAY
Signal
Arbitrary
Measurement Point
JL704 of SY-81 board (VG)
Measuring Instrument
Oscilloscope
Adjustment Page
A
Adjustment Address
85
Specified Value
A = 7.96
± 0.05 Vp-p
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
2
A
02
03
Press PAUSE button
3
4
F1
03
4
A
85
Change the data and set the
voltage (A) to the specified
value.
voltage (A) to the specified
value.
5
A
85
Press PAUSE button.
Processing after Completing Adjustments:
Order Page Address Data
Procedure
1
A
02
00
Press PAUSE button
2
4
F1
00
3
0
01
00
2H
A
Pedestal
10 steps peak
A: Between the pedestal and 10 steps peak
6. Contrast Adjustment (SY-81 Board)
Set the level of the VIDEO signal for driving the LCD to the speci-
fied value.
If deviated, the LCD screen image will be blackish or saturated
(whitish).
fied value.
If deviated, the LCD screen image will be blackish or saturated
(whitish).
Mode
PLAY
Signal
Arbitrary
Measurement Point
JL704 of SY-81 board (VG)
Measuring Instrument
Oscilloscope
Adjustment Page
A
Adjustment Address
8A
Specified Value
A = 2.50
± 0.05 Vp-p
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
2
A
02
03
Press PAUSE button
3
4
F1
03
Change the data and set the
4
A
8A
voltage (A) to the specified
value. (Note)
value. (Note)
5
A
8A
Press PAUSE button.
Note:
Adjust it between data 00 and 7F.
Processing after Completing Adjustments:
Order Page Address Data
Procedure
1
A
02
00
Press PAUSE button
2
4
F1
00
3
0
01
00
Fig. 6-1-20
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