Bright Adjustment (Pd-85 Board) - Sony DCR-TRV7 Service Manual

4. Bright Adjustment (PD-85 Board)

Set the level of the VIDEO signal for driving the LCD to the specified
value. If deviated, the screen image will not be consistent or will be
blackish or saturated (whitish).
Mode VTR playback
Audio operation check tape,
Signal
color bar portion
Pin 1 of CN9928 (VG) on CB-58 board
Measurement Point
Measuring Instrument Oscilloscope
Adjustment Page D
Adjustment Address 6C
Specified Value A = 3.25 ± 0.05V
Adjusting method:
1) Set data: 01 to page: 0, address: 01.
2) Input the following data to page: D, addresses: 82 and 83.
Address
82
Data 00
Note: Press the PAUSE button of the adjusting remote
commander each time to set the data.
3) Change the data of page: D, address: 6C, and set the voltage
(A) between the reversed waveform pedestal and non-reversed
waveform pedestal to the specified value.
4) Press the PAUSE button of the adjusting remote commander.
5) Input the following data to page: D, addresses: 82 and 83.
Address 82
Data 20
Note: Press the PAUSE button of the adjusting remote
commander each time to set the data.
6) Set data: 00 to page: 0, address: 01.
7) Perform "Contrast Adjustment".
83
C0
83
20
For NTSC model
A
For PAL model
A
5–26
2H
2H
Fig. 5-1-16.