Gamma-1 Adjustment (Pd-125 Board); Contrast Adjustment (Pd-125 Board) - Sony DCR-PC100 Service Manual

4. Gamma-1 Adjustment (PD-125 board)

Set the level of the VIDEO signal for driving the LCD to an
appropriate level. If deviated, the screen image will be blackish or
saturated (whitish).
Mode Camera
Subject Arbitrary
Measurement Point Pin 1 of CN8201 (VG)
Measuring Instrument Oscilloscope
Adjustment Page D
Adjustment Address 83
Specified Value A = 1.65 ± 0.05V
Note: This adjustment and "Contrast Adjustment" must be repeated
alternately until both specifications are satisfied simultaneously
(called tracking adjustment).
Adjusting method:
1) Select page: 0, address: 01, and set data: 01.
2) Select page: 3, address: 0C, set data: 60, and press the PAUSE
button of the adjustment remote commander.
3) Select page: 3, address: 22, set data: 02, and press the PAUSE
button.
4) Select page: 2, address: 0E, and set data: 40.
5) Select page: D, address: 83, change the data and set the voltage
(A) between the pedestal and Gamma-1 limiter level to the
specified value.
6) Press the PAUSE button.
7) Select page: 2, address: 0E, and set data: 00.
8) Select page: 3, address: 22, set data: 00, and press the PAUSE
button.
9) Select page: 3, address: 0C, set data: 00, and press the PAUSE
button.
10) Select page: 0, address: 01, and set data: 00.
11) Perform "5, Contrast Adjustment".
GAMMA 1
limiter level
A
Pedestal
Fig. 5-1-21
2H

5. Contrast Adjustment (PD-125 board)

Set the level of the VIDEO signal for driving the LCD to an
appropriate level. If deviated, the screen image will be blackish or
saturated (whitish).
Mode
Subject
Measurement Point
Measuring Instrument
Adjustment Page
Adjustment Address
Specified Value
Note: This adjustment and "Gamma-1 Adjustment" must be repeated
alternately until both specifications are satisfied simultaneously
(called tracking adjustment).
Adjusting method:
1) Select page: 0, address: 01, and set data: 01.
2) Select page: 3, address: 0C, set data: 60, and press the PAUSE
button of the adjustment remote commander.
3) Select page: 3, address: 22, set data: 01, and press the PAUSE
button.
4) Select page: D, address: 8C, change the data and set the voltage
(A) between the 0 IRE (pedestal) and 90 IRE to the specified
value.
5) Press the PAUSE button.
6) Select page: 3, address: 22, set data: 00, and press the PAUSE
button.
7) Select page: 3, address: 0C, set data: 00, and press the PAUSE
button.
8) Select page: 0, address: 01, and set data: 00.
9) Check that the specified value of the "Gamma-1 Adjustment"
is satisfied at this time. If it is found that the specified value is
not satisfied, perform "Gamma-1 Adjustment" again, then
perform "Contrast Adjustment" once again.
90 IRE
A
Pedestal
5-35
Camera
Arbitrary
Pin 1 of CN8201 (VG)
Oscilloscope
D
8C
A = 2.42 ± 0.05V
2H
Fig. 5-1-22