Rgb Amp Adjustment (Pd-161 Board); Contrast Adjustment (Pd-161 Board) - Sony DCR-TRV16 Service Manual

DCR-TRV16/TRV16E/TRV18/TRV18E/TRV116E/TRV118E

2. RGB AMP Adjustment (PD-161 board)

Set the D range of the RGB decoder used to drive the LCD to the
specified value. If deviated, the LCD screen will become blackish
or saturated (whitish).
Mode
Signal
Measurement Point
Measuring Instrument
Adjustment Page
Adjustment Address
Specified Value
Note: The data of page: 0, address: 10 must be "00".
Adjusting method:
Order Page Address Data
1 0 01
2 C 64
3 C 64
4 0 01
A
Pedestal
VTR stop
No signal
Pin 7 of CN1002 of VC-280 board
(PANEL VG)
Ext. trigger: Pin qa of CN1002 of VC-
280 board (PANEL COM)
Oscilloscope
C
64
A = 3.52 ± 0.05V (NTSC)
A = 3.63 ± 0.05V (PAL)
Procedure
01 Set the data.
Change the data and set the
voltage (A) between the reversed
waveform pedestal and non-
reversed waveform pedestal to the
specified value. (The data should
be "00" to "3F".)
Press PAUSE button.
00 Set the data.
Pedestal
2H
Fig. 5-1-19.

3. Contrast Adjustment (PD-161 board)

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
Signal
Measurement Point
Measuring Instrument
Adjustment Page
Adjustment Address
Specified Value
Note: The data of page: 0, address: 10 must be "00".
Adjusting method:
Order Page Address Data
1 0 01
2 C 69
3 C 69
4 0 01
A
Pedestal
5-34
VTR stop
No signal
Pin 7 of CN1002 of VC-280 board
(PANEL VG)
Ext. trigger: Pin qa of CN1002 of VC-
280 board (PANEL COM)
Oscilloscope
C
69
A = 3.00 ± 0.05V (NTSC)
A = 3.37 ± 0.05V (PAL)
Procedure
01 Set the data.
Change the data and set the
voltage (A) between the 100 IRE
and 0 IRE (pedestal) to the
specified value. (The data should
be "00" to "7F".)
Press PAUSE button.
00 Set the data.
100 IRE
2H
Fig. 5-1-20.