Sony D8 Digital Handycam DCR-TRV420E, Service Manual

Page: 168 / 287

5-31
5. Contrast Adjustment (VF-141 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 (EVF VG) on
VC-235 board
Measuring Instrument Oscilloscope
Adjustment Page D
Adjustment Address 99
Specified Value A=2.40 ± 0.1 Vp-p (NTSC model)
A=2.20 ± 0.1 Vp-p (PAL model)
Adjusting method:
1)
Select page: 0, address: 01, and set data: 01.
2) Select page: D, address: 99, change the data and set the voltage
(A) between the pedestal (0 IRE) and 100 IRE to the specified
value.
(The data of address: 99, should be “00” to “7F”)
3) Press the PAUSE button.
4) Select page: 0, address: 01, and set data: 00.
4. RGB AMP Adjustment (VF-141 board)
Set the D range of the RGB driver used to drive the LCD to the
specified value. If deviated, the EVF screen will become blackish
or saturated (whitish).
Mode Camera
Subject Arbitrary
Measurement Point Pin
qs
of CN1108 (EVF VG) on
VC-235 board
Measuring Instrument Oscilloscope
Adjustment Page D
Adjustment Address 95
Specified Value A=7.00 ± 0.1 Vp-p
(COLOR LCD EVF model)
A=7.40 ± 0.1 Vp-p
(B/W LCD EVF model)
Adjusting method:
1)
Select page: 0, address: 01, and set data: 01.
2) Select page: D, address: 95, change the data and set the voltage
(A) between the reversed waveform pedestal and non-reversed
waveform pedestal to the specified value.
3) Press the PAUSE button.
4) Select page: 0, address: 01, and set data: 00.
Fig. 5-1-23 Fig. 5-1-22
A
2H
Pedestal
Pedestal
A
2H
100 IRE
Pedestal