![Sony HDV HVR-A1U Service Manual Download Page 220](http://html.mh-extra.com/html/sony/hdv-hvr-a1u/hdv-hvr-a1u_service-manual_1323564220.webp)
6-61
HVR-A1J/A1U/A1N/A1E/A1P/A1C
4.
V-COM Level Adjustment (NN-001 board)
Set the opposed voltage to drive LCD panel to an appropriate level.
Mode
CAMERA
Subject
Not required
Measurement Point
Pin
1
of CN7005 (EVF_COM_DC)
on NN-001 board
Measuring Instrument
Digital voltmeter
Adjustment Page
C
Adjustment Address
36
Specified Value
A = 6.65
±
0.05 Vdc
Note:
Check that the data of page: 0, address: 10 is “00”.
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
2
C
36
Change the data and set the
DC voltage (A) to the
specified value. (The data
should be “80” to “BF”.)
3
C
36
Press PAUSE (Write) button.
4
0
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
CAMERA
Subject
Not required
Measurement Point
Pin
5
of CN7005 (EVF_VG) on
NN-001 board
Measuring Instrument
Oscilloscope
Adjustment Page
C
Adjustment Address
37
Specified Value
A = 7.00
±
0.10 Vp-p
Note:
Check that the data of page: 0, address: 10 is “00”.
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
2
C
37
Change the data and set the
voltage (A) to the specified
value.
3
C
37
Press PAUSE (Write) button.
4
0
01
00
A: Between the reversed waveform pedestal
and non-reversed waveform pedestal
Fig. 6-1-19
Pedestal
Pedestal
A
2H