Sony DCR-TRV320 Service Manual page 281

DCR-TRV320/TRV320E/TRV320P/TRV420E/TRV520/TRV520E/TRV520P/TRV525
TRV620E/TRV720/TRV720E
8. V-COM Adjustment (PD-133 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
Subject
Measurement Point
Measuring Instrument
Adjustment Page
Adjustment Address
Note: Perform "RGB AMP Adjustment", "Contrast Adjustment",
"Black Limit Adjustment" and "Center Voltage Adjustment"
before this adjustments.
Adjusting method:
Order Page Address Data
1 0 01
2 D A4
3 D A4
4 D A4
5 0 01
Camera
Arbitrary
Check on LCD display
D
A4
Procedure
01
Change the data so that brightness
of the section A and section B is
equal.
(The data should be "80" to "BF")
Subtract 2 from the data.
Press PAUSE button.
00
B A
A
B
B A
A B
Fig. 5-1-32
9. White Balance Adjustment (PD-133 board)
Correct the white balance.
If deviated, the LCD screen color cannot be reproduced.
Mode
Subject
Measurement Point
Measuring Instrument
Adjustment Page
Adjustment Address
Specified Value
Note 1: Check the white balance only when replacing the following
parts. If necessary, adjust them.
1. LCD panel
2. Light induction plate
3. IC5501
Adjusting method:
Order Page Address Data
1 0 01
A8
2 D
A9
3
A8
4 D
A9
5 0 01
Note 2: To write in the non-volatile memory (EEPROM), press
the PAUSE button each time to set the data.
– 16 –
Camera
Arbitrary
Check on LCD display
D
A8, A9
The LCD screen should not be colored.
Procedure
01
80 Press PAUSE button. (Initial
80 value)
Check that the LCD screen is not
colored. If not colored, proceed
to Step 5.
Change the data so that the LCD
screen is not colored. (Note 2)
00