Contrast Adjustment (Pd-179 Board); V-Com Level Adjustment (Pd-179 Board) - Sony DSC-F717 Manual

5. Contrast Adjustment (PD-179 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-194
board (PANEL_VG)
External trigger: Pin 8 of
CN305 on FR-194 board
(PANEL_COM)
Measuring Instrument Oscilloscope
Adjustment Page A
Adjustment Address 8A
A = 2.65 ± 0.07 Vp-p
Specified Value
Adjusting method:
Order Page Address Data
1 0 01 01
2 A 02 13
3 4 F1 03
4 A 8A
5 A 8A
Processing after Completing Adjustments:
Order Page Address Data
1 A 02 00
2 4 F1 00
3 0 01 00
10 steps peak
A
Pedestal
A: Between the pedestal and 10 steps peak
Fig. 6-1-20
Procedure
Press PAUSE button.
Change the data and set the
voltage (A) to the specified
value.
Press PAUSE button.
Procedure
Press PAUSE button.
2H

6. V-COM Level Adjustment (PD-179 Board)

Set the common electrode drive signal level of LCD to the speci-
fied value.
Mode
Signal
Measurement Point
Measuring Instrument
Adjustment Page
Adjustment Address
Specified Value
Adjusting method:
Order Page Address Data
1 0 01
2 A 02
3 4 F1
4 A 87
5 A 87
Processing after Completing Adjustments:
Order Page Address Data
1 A 02
2 4 F1
3 0 01
6-41
DSC-F717
PLAY
Arbitrary
Pin 8 of CN305 on FR-194
board (PANEL_COM)
Oscilloscope
A
87
A = 5.42 ± 0.05 Vp-p
Procedure
01
13 Press PAUSE button.
03
Change the data and set the
voltage (A) to the specified
value.
Press PAUSE button.
Procedure
00 Press PAUSE button.
00
00
2H
Fig. 6-1-21
A