Sony DCR-TRV230 Service Manual page 241

LCD Type
LCD Type SH for TRV230/TRV330
9. COM AMP Adjustment (PD-138 board)
(DCR-TRV230/TRV330)
Set the common electrode drive signal level of LCD to the
specified value.
10. V-COM Adjustment (PD-138/139 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
Signal
Measurement Point
Measuring Instrument
Adjustment Page
Adjustment Address
Specified Value
Note: This adjustment should be carried out upon completion of the
following adjustments.
[DCR-TRV230/TRV330]
RGB AMP Adjustment
5-34
Contrast Adjustment
COM AMP Adjustment
[DCR-TRV530]
RGB AMP Adjustment
Black Limit Adjustment
Contrast Adjustment
Center Level Adjustment
Adjusting method:
Order Page Address Data
1 0 01
2 D A4
3 D A4
4 D A4
5 0 01
VTR stop
No signal
Check on LCD display
D
A4
The brightness difference between the
section A and section B is minimum.
Procedure
01 Set the data.
Change the data so that the
brightness of the section A and
that of the section B is equal.
[DCR-TRV230/TRV330]
The data should be "00" to "FF".
[DCR-TRV530]
The data should be "00" to "3F"
[DCR-TRV230/TRV330]
Subtract 8 from the data.
[DCR-TRV530]
Subtract 2 from the data.
Press PAUSE button.
00 Set the data.
LCD Type SO for TRV230/TRV330
9. COM AMP Adjustment (PD-138 board)
(DCR-TRV230/TRV330 (LCD TYPE SH) )
10. V-COM Adjustment (PD-138/139 board)
Note: This adjustment should be carried out upon completion of the
following adjustments.
[LCD TYPE SH]
RGB AMP Adjustment
Contrast Adjustment
COM AMP Adjustment
[LCD TYPE SO]
RGB AMP Adjustment
Black Limit Adjustment
Contrast Adjustment
Center Level Adjustment
Adjusting method:
Order Page Address Data
1 0 01
2 D A4
3 D A4
4 D A4
5 0 01
— 10 —
: Added portion. : Changed portion.
Procedure
01 Set the data.
Change the data so that the
brightness of the section A and
that of the section B is equal.
[LCD TYPE SH]
The data should be "00" to "FF".
[LCD TYPE SO]
The data should be "00" to "3F".
[LCD TYPE SH]
Subtract 8 from the data.
[LCD TYPE SO]
Subtract 2 from the data.
Press PAUSE button.
00 Set the data.