Sony Cyber-shot DSC-F707, Service Manual

Page: 108 / 138

5-34
DSC-F707
5. Contrast Adjustment (PD-155 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).
Mode PLAY
Signal Arbitrary
Measurement Point Pin
9
of CN305 on FR-181
board (PANEL_VG)
External trigger: Pin
8 of
CN305 on FR-181 board
(PANEL_COM)
Measuring Instrument Oscilloscope
Adjustment Page D
Adjustment Address EA
Specified Value A = 2.65
±
0.07 Vp-p
Adjusting method:
Order Page Address Data Procedure
1 0 01 01
2 D 1E 10 Press PAUSE button.
3 4 F1 03
4 D EA
Change the data and set the
voltage (A) to the specified
value.
5 D EA Press PAUSE button.
Processing after Completing Adjustments:
Order Page Address Data Procedure
1 D 1E 01 Press PAUSE button.
2 4 F1 00
3 0 01 00
6. V-COM Level Adjustment (PD-155 Board)
Set the common electrode drive signal level of LCD to the speci-
fied value.
Mode PLAY
Signal Arbitrary
Measurement Point Pin 8 of CN305 on FR-181
board (PANEL_COM)
Measuring Instrument Oscilloscope
Adjustment Page D
Adjustment Address E7
Specified Value A = 5.42
±
0.05 Vp-p
Adjusting method:
Order Page Address Data Procedure
1 0 01 01
2 D 1E 10 Press PAUSE button.
3 4 F1 03
4 D E7
Change the data and set the
voltage (A) to the specified
value.
5 D E7 Press PAUSE button.
Processing after Completing Adjustments:
Order Page Address Data Procedure
1 D 1E 01 Press PAUSE button.
2 4 F1 00
3 0 01 00
Fig. 5-1-23
A
2H
10 steps peak
Pedestal
A: Between the pedestal and 10 steps peak
Fig. 5-1-24
A
2H