Sony Cyber-shot DSC-P1, Service Manual

Page: 86 / 105

5-29
2H
A
A: Between the reversed waveform peak and non-reversed
waveform peak
3. Black Limit Adjustment (PD-137 Board)
Set the maximum 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).
Mode PLAY
Signal Arbitrary
Measurement Point Pin
9
of CN881 (VG)
External trigger: Pin
8
of CN881
(PEARL COM)
Measuring Instrument Oscilloscope
Adjustment Page D
Adjustment Address D5
Specified Value A = 8.20 ± 0.1 Vp-p (TYPE ST)
A = 7.40 ± 0.1 Vp-p (TYPE SA)
Adjusting method:
Order Page Address Data Procedure
1 0 01 01
2 5 F1 03
3 D D0 Note down the data.
4 D D0 20 Press PAUSE button.
Change the data and set the
5 D D5 voltage (A) to the specified
value.
6 D D5 Press PAUSE button.
Processing after Completing Adjustments:
Order Page Address Data Procedure
1 5 F1 00
2 D D0
Set data noted down at step 3,
and press PAUSE button.
3 0 01 00
4. Bright Adjustment (PD-137 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).
Mode PLAY
Signal Arbitrary
Measurement Point Pin
9
of CN881 (VG)
External trigger: Pin
8
of CN881
(PEARL COM)
Measuring Instrument Oscilloscope
Adjustment Page D
Adjustment Address D0
Specified Value A = 7.96 ± 0.1 Vp-p (TYPE ST)
A = 7.00 ± 0.1 Vp-p (TYPE SA)
Adjusting method:
Order Page Address Data Procedure
1 0 01 01
2 5 F1 03
Change the data and set the
3 D D0 voltage (A) to the specified
value.
4 D D0 Press PAUSE button.
Processing after Completing Adjustments:
Order Page Address Data Procedure
1 5 F1 00
2 0 01 00
Fig. 5-1-22
2H
Pedestal
Pedestal
A
A: Between the reversed waveform pedestal and non-reversed
waveform pedestal
Fig. 5-1-23