Contrast Adjustment (Pd-137 Board); Color Adjustment (Pd-137 Board) - Sony Cyber-shot DSC-P1 Service Manual

5. Contrast Adjustment (PD-137 Board)

Set the level of the VIDEO signal for driving the LCD to the
specified value.
If deviated, the LCD screen image will be blackish or saturated
(whitish).
Mode
Signal
Measurement Point
Measuring Instrument
Adjustment Page
Adjustment Address
Specified Value
Adjusting method:
Order Page Address Data
1 0 01 01
2 5 F1 03
3 D D4
4 D D4
Processing after Completing Adjustments:
Order Page Address Data
1 5 F1 00
2 0 01 00
10 steps peak
A
Pedestal
A: Between the pedestal and 10 setps peak
Fig. 5-1-24
PLAY
Arbitrary
Pin 9 of CN881 (VG)
External trigger: Pin 8 of CN881
(PEARL COM)
Oscilloscope
D
D4
A = 2.50 ± 0.05 Vp-p (TYPE ST)
A = 2.24 ± 0.05 Vp-p (TYPE SA)
Procedure
Change the data and set the
voltage (A) to the specified
value.
Press PAUSE button.
Procedure
2H

6. Color Adjustment (PD-137 Board)

Set the color saturation to the standard value.
If, deviated, the color will be dark or light.
Mode
Signal
Measurement Point
Measuring Instrument
Adjustment Page
Adjustment Address
Specified Value
Adjusting method:
Order Page Address Data
1 0 01
2 5 F1
2 D D1
4 D D1
Processing after Completing Adjustments:
Order Page Address Data
1 5 F1
2 0 01
White 100%
Green
A
A: Between the white 100% (Reference level) and green
5-30
PLAY
Arbitray
Pin 9 of CN881 (VG)
External trigger: Pin 8 of CN881
(PEARL COM)
Oscilloscope
D
D1
A = 444 ± 50 mVp-p (TYPE ST)
A = 308 ± 50 mVp-p (TYPE SA)
Procedure
01
04
Change the data and set the
voltage (A) to the specified
value.
Press PAUSE button.
Procedure
00
00
2H
Fig. 5-1-25