V-Com Level Adjustment (Pd-168 Board); V-Com Adjustment (Pd-168 Board) - Sony DCR-TRV940 Adjustment Manual

4. V-COM Level Adjustment (PD-168 board)

Set the common electrode drive signal level of LCD to the speci-
fied value.
Mode CAMERA
Subject Not required
Measurement Point Pin 2 of CN1024 (PANEL_COM)
on VC-288 board
Measuring Instrument Oscilloscope
Adjustment Page C
Adjustment Address 66
A = 5.40 ± 0.05 Vp-p
Specified Value
Note 1: Perform "RGB AMP Adjustment" and "Contrast Adjust-
ment" before this adjustment.
Note 2: Check that the data of page: 0, address: 10 is "00".
Adjusting method:
Order Page Address Data
1 0 01 01
2 C 66
3 C 66
4 0 01 00
2H
A: PANEL COM signal level
Fig. 6-1-30
Procedure
Change the data and set the
voltage (A) to the specified
value.
Press PAUSE button.
A
DCR-TRV940/TRV940E/TRV950/TRV950E

5. V-COM Adjustment (PD-168 board)

Set the DC bias of the common electrode drive signal of LCD to
the specified value.
If deviated, the LCD display will be move, producing flicker and
conspicuous vertical lines.
Mode
Subject
Measurement Point
Measuring Instrument
Adjustment Page
Adjustment Address
Specified Value
Note 1: Perform "RGB AMP Adjustment", "Contrast Adjust-
ment" and "V-COM Level Adjustment" before this ad-
justment.
Note 2: Check that the data of page: 0, address: 10 is "00".
Adjusting method:
Order Page Address Data
1 0 01
2 C 63
3 C 63
4 C 63
5 0 01
6-47
CAMERA
Not required
Check on LCD screen
C
63
The brightness difference between
the section-A and section-B is
minimum
Procedure
01
Change the data so that
brightness of the section A
and section B is equal.
Subtract 8 from the data.
Press PAUSE button.
00
A
B
A
B
B A
A
B
Fig. 6-1-31