Read Sony CCD-TRV107E / CCD-TRV108E / CCD-TRV208E / CCD-TRV408E Service Manual online
5-26
CCD-TRV107E/TRV108E/TRV208E/TRV408E
4. COM AMP Adjustment (PD-156 board)
Set the common electrode drive signal level of LCD to the specified
value.
value.
Mode
VTR stop
Signal
No signal
Measurement Point
Pin 4 of CN5502 (PANEL COM)
Measuring Instrument
Oscilloscope
Adjustment Page
7
Adjustment Address
48
Specified Value
A = 6.20 ± 0.05V
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
Set the data.
2
7
48
Change the data and set the
PANEL COM signal level (A) to
the specified value.
PANEL COM signal level (A) to
the specified value.
3
7
48
Press PAUSE button.
4
0
01
00
Set the data.
5. V-COM Adjustment (PD-156 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.
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
7
Adjustment Address
45
Specified Value
The brightness difference between the
section A and section B is minimum.
section A and section B is minimum.
Note:
This adjustment should be carried out upon completion of the
following adjustments.
following adjustments.
RGB AMP Adjustment
Contrast Adjustment
COM AMP Adjustment
Contrast Adjustment
COM AMP Adjustment
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
Set the data.
2
7
45
Change the data so that the
brightness of the section A and
that of the section B is equal.
brightness of the section A and
that of the section B is equal.
3
7
45
Subtract 8 from the data.
4
7
45
Press PAUSE button.
5
0
01
00
Set the data.
Fig. 5-1-18.
A
2H
Fig. 5-1-19.
A
A
A
A
B
B
B
B
Click on the first or last page to see other CCD-TRV107E / CCD-TRV108E / CCD-TRV208E / CCD-TRV408E service manuals if exist.