Read Sony DCR-TRV25 / DCR-TRV27 Service Manual online
5-33
DCR-TRV25/TRV27
2. RGB AMP Adjustment (VA-117 board)
Set the D range of the RGB driver used to drive the LCD to the
specified value. If deviated, the LCD screen will become blackish
or saturated (whitish).
specified value. If deviated, the LCD screen will become blackish
or saturated (whitish).
Mode
Camera
Subject
Arbitrary
Measurement Point
Pin 4 of CN1002 of VC-281 board
(EVF VG)
(EVF VG)
Measuring Instrument
Oscilloscope
Adjustment Page
C
Adjustment Address
54
Specified Value
A = 7.20 ± 0.10V
Note:
The data of page: 0, address: 10 must be “00”.
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
Set the data.
2
C
54
Change the data and set the
voltage (A) between the reversed
waveform pedestal and non-
reversed waveform pedestal to the
specified value.
voltage (A) between the reversed
waveform pedestal and non-
reversed waveform pedestal to the
specified value.
3
C
54
Press PAUSE button.
4
0
01
00
Set the data.
3. Contrast Adjustment (VA-117 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).
value. If deviated, the screen image will be blackish or saturated
(whitish).
Mode
Camera
Subject
Arbitrary
Measurement Point
Pin 4 of CN1002 of VC-281 board
(EVF VG)
(EVF VG)
Measuring Instrument
Oscilloscope
Adjustment Page
C
Adjustment Address
58
Specified Value
A = 2.52 ± 0.10V
Note:
The data of page: 0, address: 10 must be “00”.
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
Set the data.
2
C
58
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”.)
voltage (A) between the 100 IRE
and 0 IRE (pedestal) to the
specified value. (The data should
be “00” to “7F”.)
3
C
58
Press PAUSE button.
4
0
01
00
Set the data.
Pedestal
Pedestal
A
2H
3 steps peak
Pedestal
A
2H
Fig. 5-1-15.
Fig. 5-1-16.
