Sony Cyber-shot DSC-F505, Service Manual

Page: 105 / 129

5-37
5. Contrast Adjustment (Control Switch Block (FK) )
Set the level of the VIDEO signal for driving the LCD to the specified
value. If deviated, the screen image will be blackish or saturated
(whitish).
Mode PLAY
Signal Arbitrary
Measurement Point Pin
9
of CN002 (VG)
External trigger: Pin
8
of CN002
(PANEL COM)
Measuring Instrument Oscilloscope
Adjustment Page D
Adjustment Address 84
Specified Value A = 3.31 ± 0.07V
Adjusting method:
1)
Select page: 0, address: 01, and set data: 01.
2) Select page: 5, address: F1, set data: 03.
3) Select page: D, address: 84, change the data and set the voltage
(A) between the 10 steps peak and pedestal to the specified
value.
4) Press the PAUSE button of the adjustment remote commander.
5) Select page: 5, address: F1, set data: 00.
6) Select page: 0, address: 01, and set data: 00.
Fig.5-1-21.
A
2H
GAMMA1 limiter level
Pedestal
Fig.5-1-22.
A
2H
10 steps peak
Pedestal
4. Bright Adjustment (Control Switch Block (FK) )
Set the level of the VIDEO signal for driving the LCD to the specified
value. If deviated, the screen image will be blackish or saturated
(whitish).
Mode PLAY
Signal Arbitrary
Measurement Point Pin
9
of CN002 (VG)
External trigger: Pin
8
of CN002
(PANEL COM)
Measuring Instrument Oscilloscope
Adjustment Page D
Adjustment Address 80
Specified Value A = 2.17 ± 0.08V
Adjusting method:
1)
Select page: 0, address: 01, and set data: 01.
2) Select page: 5, address: F1, set data: 03.
3) Select page: 2, address: 10, and set data: 01.
4) Select page: D, address: 80, change the data and set the voltage
(A) between the pedestal and GAMMA1 limiter level to the
specified value.
5) Press the PAUSE button of the adjustment remote commander.
6) Select page: 2, address: 10, and set data: 00.
7) Select page: 5, address: F1, set data: 00.
8) Select page: 0, address: 01, and set data: 00.