Sony HVR-A1J Service Manual page 220

4. V-COM Level Adjustment (NN-001 board)
Set the opposed voltage to drive LCD panel to an appropriate level.
Mode
Subject
Measurement Point
Measuring Instrument
Adjustment Page
Adjustment Address
Specified Value
Note: Check that the data of page: 0, address: 10 is "00".
Adjusting method:
Order Page Address Data
1 0
2 C
3 C
4 0
HVR-A1J/A1U/A1N/A1E/A1P/A1C
CAMERA
Not required
Pin 1 of CN7005 (EVF_COM_DC)
on NN-001 board
Digital voltmeter
C
36
A = 6.65 ± 0.05 Vdc
Procedure
01 01
Change the data and set the
DC voltage (A) to the
36
specified value. (The data
should be "80" to "BF".)
36 Press PAUSE (Write) button.
01 00
5. RGB AMP Adjustment (NN-001 board)
Set the D Range of the RGB decoder for driving the LCD to the
specified value.
If deviated, the EVF screen image will be blackish or saturated
(whitish).
Mode
Subject
Measurement Point
Measuring Instrument
Adjustment Page
Adjustment Address
Specified Value
Note: Check that the data of page: 0, address: 10 is "00".
Adjusting method:
Order Page Address Data
1 0 01
2 C 37
3 C 37
4 0 01
A
Pedestal
A: Between the reversed waveform pedestal
and non-reversed waveform pedestal
6-61
CAMERA
Not required
Pin 5 of CN7005 (EVF_VG) on
NN-001 board
Oscilloscope
C
37
A = 7.00 ± 0.10 Vp-p
Procedure
01
Change the data and set the
voltage (A) to the specified
value.
Press PAUSE (Write) button.
00
Pedestal
2H
Fig. 6-1-19