Black Limit Adjustment (Pd-125 Board); Bright Adjustment (Pd-125 Board) - Sony DCR-PC100 Service Manual

2. Black Limit Adjustment (PD-125 board)

Set the dynamic range of the LCD driver to an appropriate level. If
deviated, the LCD screen will become blackish or saturated
(whitish).
Mode VTR stop
Signal No signal
Measurement Point Pin 4 of CN8201 (PSIG)
Measuring Instrument Oscilloscope
Adjustment Page D
Adjustment Address 82
Specified Value A = 8.00 ± 0.05V
Adjusting method:
1) Select page: 0, address: 01, and set data: 01.
2) Select page: 2, address: 0F, and set data: 01.
3) Select page: D, address: 82, change the data and set the PSIG
signal amplitude (A) to the specified value.
4) Press the PAUSE button.
5) Select page: 2, address: 0F, and set data: 00.
6) Select page: 0, address: 01, and set data: 00.
A
V
Fig. 5-1-19

3. Bright 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
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: 08, and press the PAUSE
button.
4) Select page: D, address: 8A, change the data and set the voltage
(A) between the reversed waveform pedestal and non-reversed
waveform pedestal 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.
A
Pedestal
5-34
Camera
Arbitrary
Pin 1 of CN8201 (VG)
Oscilloscope
D
8A
A = 7.20 ± 0.05V
Pedestal
2H
Fig. 5-1-20