ELECTRICAL ADJUSTMENTS
D3-3
2-12: BRIGHT CENT
1.
2.
3.
4.
5.
6.
7.
8.
9.
Receive the PAL black pattern*. (RF Input)
Using the remote control, set the brightness and
contrast to normal position.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (17) on the remote control to
select "BRIGHT CENT".
Press the LEFT/RIGHT button on the remote control
until the screen begin to shine.
Receive the PAL black pattern*. (Audio Video Input)
Press the AV button on the remote control to set to the
AV mode. Then perform the above adjustments 2~4.
Press the DVD button on the remote control to set to
the DVD mode.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (17) on the remote control to
select "BRIGHT CENT".
Press the LEFT/RIGHT button on the remote control to
set the same step numbers as the AV mode.
2-13: CONTRAST CENT
1.
2.
3.
4.
5.
6.
7.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (20) on the remote control to
select "CONTRAST CENT".
Press the LEFT/RIGHT button on the remote control
until the contrast step No. becomes "40".
Receive a broadcast and check if the picture is normal.
Press the AV button on the remote control to set to the
AV mode. Then perform the above adjustments 1~3.
Press the DVD button on the remote control to set to
the DVD mode.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (20) on the remote control to
select "CONTRAST CENT".
Press the LEFT/RIGHT button on the remote control to
set the same step numbers as the AV mode.
*The Black Pattern means the whole black raster signal.
Select the "RASTER" of the pattern generator, set to
the OFF position for each R, G and B.
2-14: COLOR CENT
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
Receive the PAL color bar pattern. (RF Input)
Using the remote control, set the brightness, contrast
and color to normal position.
Connect the oscilloscope to TP024.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (23) on the remote control to
select "COLOR CENT".
Adjust the VOLTS RANGE VARIABLE knob of the
oscilloscope until the range between white 100% and
0% is set to 4 scales on the screen of the oscilloscope.
Press the LEFT/RIGHT button on the remote control
until the red color level is adjusted to 90
±
5% of the
white level. (Refer to Fig. 2-3)
Receive the VIDEO PAL color bar pattern. (Audio Video
Input)
Press the AV button on the remote control to set to the
AV mode. Then perform the above adjustments 2~6.
Press the DVD button on the remote control to set to the
DVD mode.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (23) on the remote control to
select "COLOR CENT".
Press the LEFT/RIGHT button on the remote control to
set the same step numbers as the AV mode.
2-15: Confirmation of Fixed Value (Step No.)
Please check if the fixed values of the each adjustment
items are set correctly referring below.
NO.
02
04
06
07
09
15
16
18
19
21
22
24
25
27
30
35
36
37
38
FUNCTION
AGC GAIN
R CUTOFF
G CUTOFF
B DRIVE
V POSI 50Hz /60Hz
VCO COARSE L1
VCO FINE L1
BRIGHT MAX
BRIGHT MIN
CONTRAST MAX
CONTRAST MIN
COLOR MAX
COLOR MIN
SHARP
M B CUT OFF
CVBS OUT
APR THRESHOLD
BELL FILTER
BANDPASS
STEP NO.
00
31
31
31
5/15
00
00
55
10
48
10
50
10
07
50
25
05
00
00
Fig. 2-3
100%
90%
Summary of Contents for VTW21FQR
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