5-42
DCR-PC115/PC115E/PC120BT/PC120E
6. Center Level Adjustment (PD-148 board)
Set the video signal center level of LCD panel to an appropriate
level.
Mode
VTR stop
Signal
No signal
Measurement Point
Pin
1
of CN2105 (VG)
Measuring Instrument
Digital voltmeter
Adjustment Page
D
Adjustment Address
AB
Specified Value
A = 7.00 ± 0.05Vdc
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
Set the data.
2
3
0C
60
Set the data, and press PAUSE
button.
3
3
22
08
Set the data, and press PAUSE
button.
4
D
AB
Change the data and set the DC
voltage (A) to the specified value.
(The data should be “00” to “7F”.)
5
D
AB
Press PAUSE button.
6
3
0C
00
Set the data, and press PAUSE
button.
7
3
22
00
Set the data, and press PAUSE
button.
8
0
01
00
Set the data.
7. V-COM Adjustment (PD-148 board)
Set the DC bias of the common electrode drive signal of LCD to the
specified value.
If deviated, the LCD display will move, producing flicker and
conspicuous vertical lines.
Mode
VTR stop
Signal
No signal
Measurement Point
Check on LCD display
Measuring Instrument
Adjustment Page
D
Adjustment Address
A4
Specified Value
The brightness difference between the
section A and section B is minimum.
Note:
Perform “Bright Adjustment”, “Black Limit Adjustment”, “Contrast
Adjustment” and “Center Level Adjustment” before this adjustment.
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
Set the data.
2
D
A4
Change the data so that the
brightness of the section A and
that of the section B is equal.
(The data should be “80” to “BF”.)
3
D
A4
Subtract 2 from the data.
4
D
A4
Press PAUSE button.
5
0
01
00
Set the data.
Fig. 5-1-26.
A
A
A
A
B
B
B
B