5-33
6. V-COM Adjustment (PD-126 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
B0
Write down the data.
3
D
B0
CA
Set the data, and press PAUSE
button.
4
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”.)
5
D
A4
Subtract 2 from the data.
6
D
A4
Press PAUSE button.
7
D
B0
Write the data that was written
down in the step 2.
8
D
B0
Press PAUSE button.
9
0
01
00
Set the data.
7. White Balance Adjustment (PD-126 board)
Correct the white balance.
If deviated, the reproduction of the LCD screen may degenerate.
Mode
VTR stop
Signal
No signal
Measurement Point
Check on LCD screen
Measuring Instrument
Adjustment Page
D
Adjustment Address
A8, A9
Specified Value
The LCD screen should not be
colored.
Note1:
Check the white balance only when replacing the following parts.
If necessary, adjust them.
1. LCD panel
2. Light induction plate
3. IC2101
Note2:
Use the AC power adaptor.
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
Set the data.
2
D
A8
85
Set the data, and press PAUSE
button.
3
D
A9
75
Set the data, and press PAUSE
button.
4
D
A9
Check that the LCD screen is
not colored. If not colored,
proceed to step 10.
5
D
A8
Change the data so that the LCD
screen is not colored.
6
D
A8
Press PAUSE button.
7
D
A9
Change the data so that the LCD
screen is not colored.
8
D
A9
Press PAUSE button.
9
D
A9
If the LCD screen is colored,
repeat steps 5 to 9.
10
0
01
00
Set the data.
A
A
A
A
B
B
B
B
Fig. 5-1-22.
Содержание DSR-250
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Страница 284: ...ELECTRONIC VIEWFINDER DXF 801 DXF 801CE SERVICE MANUAL Attached Manual ...
Страница 308: ...6 1 DXF 801 801CE MAIN MAIN COMPONENT SIDE Section 6 Board Layouts MAIN SOLDERING SIDE ...
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Страница 311: ...Sony EMCS Co DSR 250 250P 388 9 929 845 12 2001K1600 1 2001 11 Published by DI Customer Center ...
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