5-42
DCR-TRV40/TRV40E/TRV50/TRV50E
4. COM AMP Adjustment (PD-165 board)
Set the common electrode drive signal level of LCD to the specified
value.
Mode
VTR stop
Signal
No signal
Measurement Point
Pin
5
of CN1012 of VC-283 board
(PANEL COM)
Measuring Instrument
Oscilloscope
Adjustment Page
C
Adjustment Address
66
Specified Value
A = 5.60
±
0.05V (NTSC)
A = 5.40
±
0.05V (PAL)
Note:
The data of page: 0, address: 10 must be “00”.
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
Set the data.
2
C
66
Change the data and set the
PANEL COM signal level (A) to
the specified value.
3
C
66
Press PAUSE button.
4
0
01
00
Set the data.
5
Perform “V COM Adjustment”.
5. V COM Adjustment (PD-165 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
C
Adjustment Address
63
Specified Value
The brightness difference between the
section A and section B is minimum.
Note1:
This adjustment should be carried out upon completion of the
following adjustments.
RGB AMP Adjustment
Contrast Adjustment
COM AMP Adjustment
Note2:
The data of page: 0, address: 10 must be “00”.
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
Set the data.
2
C
63
Change the data so that the
brightness of the section A and
that of the section B is equal.
3
C
63
Subtract 8 from the data.
4
C
63
Press PAUSE button.
5
0
01
00
Set the data.
Fig. 5-1-22.
Fig. 5-1-23.
A
2H
A
A
A
A
B
B
B
B
