Sony HANDYCAM DCR-TRV230, Service Manual

Page: 158 / 248

5-27
2. RGB AMP Adjustment (CF-079/080 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).
Mode Camera
Subject Arbitrary
Measurement Point Pin
qs
of CN1108 OF VC-254 board
(EVF VG)
Measuring Instrument Oscilloscope
Adjustment Page D
Adjustment Address 95
Specified Value A = 7.44 ± 0.10V
Adjusting method:
Order Page Address Data Procedure
1 0 01 01 Set the data.
2 D 95 Change the data and set the voltage
(A) between the reversed waveform
pedestal and non-reversed waveform
pedestal to the specified value.
3 D 95 Press PAUSE button.
4 0 01 00 Set the data.
3. Contrast Adjustment (CF-079/080 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 Camera
Subject Arbitrary
Measurement Point Pin
qs
of CN1108 of VC-254 board
(EVF VG)
Measuring Instrument Oscilloscope
Adjustment Page D
Adjustment Address 99
Specified Value A = 2.46 ± 0.10V
Adjusting method:
Order Page Address Data Procedure
1 0 01 01 Set the data.
2 D 99 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”.)
3 D 99 Press PAUSE button.
4 0 01 00 Set the data.
Pedestal
Pedestal
A
2H
100 IRE
Pedestal
A
2H
Fig. 5-1-14. Fig. 5-1-15.