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2-12: WHITE BALANCE
NOTE: Adjust after performing CUT OFF adjustment.
1.
Place the set with Aging Test for more than 15 minutes.
2.
Receive the white 100% signal from the Pattern
Generator.
3.
Using the remote control, set the brightness and
contrast to normal position.
4.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (03) on the remote control to
select "R DRIVE".
5.
Using the VOL. UP/DOWN button on the remote
control, adjust the R DRIVE.
6.
Press the CH. UP/DOWN button on the remote control
to select the "R DRIVE", "G DRIVE", "M R CUTOFF" or
"M G CUTOFF".
7.
Using the VOL. UP/DOWN button on the remote
control, adjust the R DRIVE, G DRIVE, M R CUTOFF or
M G CUTOFF.
8.
Perform the above adjustments 6 and 7 until the white
color is looked like a white.
2-13: BRIGHT CENT
1.
Receive the PAL black pattern*. (RF Input)
2.
Using the remote control, set the brightness and
contrast to normal position.
3.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (17) on the remote control to
select "BRIGHT CENT".
4.
Press the VOL. UP/DOWN button on the remote control
until the screen begin to shine.
5.
Receive the PAL black pattern*. (Audio Video Input)
6
Press the AV button on the remote control to set to the
AV mode. Then perform the above adjustments 2~4.
*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: CONTRAST CENT
1.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (20) on the remote control to
select "CONTRAST CENT".
2.
Press the VOL. UP/DOWN button on on the remote
control until the contrast step No. becomes "21".
3.
Press the AV button on the remote control to set to the
AV mode.
4.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (20) on the remote control to
select "CONTRAST CENT".
5.
Press the VOL. UP/DOWN button on on the remote
control until the contrast step No. becomes "24".
ELECTRICAL ADJUSTMENTS
D3-3
2-15: COLOR CENT
1.
Receive the PAL color bar pattern. (RF Input)
2.
Using the remote control, set the brightness, contrast
and color to normal position.
Connect the oscilloscope to TP803.
3.
Activate the adjustment mode display of Fig. 1-1 and
4.
press the channel button (23) on the remote control to
select "COLOR CENT".
5.
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 VOL. UP/DOWN button on the remote control
6.
until the red color level is adjusted to 90 ± 5% of the
white level. (Refer to Fig. 2-3)
7.
Receive the PAL color bar pattern. (Audio Video Input)
8.
Press the AV button on the remote control to set to the
AV mode. Then perform the above adjustments 2~6.
2-16: Confirmation of Fixed Value (Step No.)
Please check if the fixed values of the each adjustment
items are set correctly referring below.
NO.
FUNCTION
02
AGC GAIN
04
R CUTOFF
06
G CUTOFF
07
B DRIVE
15
VCO COARSE L1
16
VCO FINE L1
18
BRIGHT MAX
19
BRIGHT MIN
21
CONTRAST MAX
22
CONTRAST MIN
24
COLOR MAX
25
COLOR MIN
27
SHARP
30
M B CUT OFF
35
CVBS OUT
36
APR THRESHOLD
37
BELL FILTER
38
BANDPASS
* To check for the fixed values of the RF (60Hz), indicate
the adjustment mode screen while input the 60Hz video
signal.
90%
100%
Fig. 2-3
RF (50Hz)
RF (60Hz)
00
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31
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31
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31
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00
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00
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55
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20
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40
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10
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60
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10
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05
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50
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10
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15
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00
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00
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AV
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05
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