Panasonic CT-20SL15 - 20" CRT TV Manuale di servizio - Pagina 16
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2-13: BRIGHT CENT
1.
Receive the 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 (16) on the remote control to
select "BRIGHT CENT".
4.
Press the VOL. UP/DOWN button on the remote control
until the white 10% is starting to be visible.
5.
Receive the black pattern*. (Audio Video Input)
6.
Press the TV/VIDEO button on the remote control to set
to the AV mode. Then perform the above adjustments
2~4.
7.
Press the TV/VIDEO button on the remote control to set
to the CS mode.
8.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (16) on the remote control to
select "BRIGHT CENT".
9.
Press the VOL. UP/DOWN button on the remote control
until the brightness step No. becomes "80".
*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.
Receive the color bar pattern. (RF Input)
2.
Using the remote control, set the brightness, contrast,
color and tint to normal position.
3.
Connect the oscilloscope to TP022.
4.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (22) 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.
6.
Press the VOL. UP/DOWN button on the remote control
until the red color level is adjusted to 110 ± 5% of the
white level. (Refer to Fig. 2-3)
7.
Receive the video color bar pattern. (Audio Video Input)
8.
Set to the AV mode. Then perform the above
adjustments 2~6.
9.
Press the TV/VIDEO button on the remote control to set
to the CS mode. Then perform the above adjustments
2~4.
10.
Press the VOL. UP/DOWN button on the remote control
until the color step No. becomes "65".
white 100%
ELECTRICAL ADJUSTMENTS
110%
Fig. 2-3
2-15: TINT
1.
Receive the color bar pattern. (RF Input)
2.
Using the remote control, set the brightness, contrast,
color and tint to normal position.
3.
Connect the oscilloscope to TP024.
4.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (24) on the remote control to
select "TINT".
5.
Press the VOL. UP/DOWN button on the remote control
until the section "A" becomes as straight line.
(Refer to Fig. 2-4)
6.
Receive the video color bar pattern. (Audio Video Input)
7.
Set to the AV mode. Then perform the above adjustments
2~5.
8.
Press the TV/VIDEO button on the remote control to set to
the CS mode. Then perform the above adjustments 2~4.
9.
Press the VOL. UP/DOWN button on the remote control
until the tint step No. becomes "52".
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
H.VCO
04
AFC GAIN
05
V.SHIFT
06
H.SIZE
09
VS CORRECTION
15
BRIGHT MAX
17
BRIGHT MIN
19
CONTRAST CENT
20
CONTRAST MIN
21
COLOR MAX
23
COLOR MIN
25
SHARP.MAX
26
SHARP.CENT
27
SHARP.MIN
28
CB DL
29
CR DL
32
PARABOLA
33
CORNER
34
TRAPEZIUM
D-3
"A"
Fig. 2-4
RF
AV
CS
03
03
03
07
07
07
02
02
02
40
40
40
28
28
28
120
120
120
50
50
50
50
50
50
18
18
18
90
90
90
00
00
00
63
63
63
43
40
40
00
00
00
00
00
00
00
00
00
25
25
25
32
32
32
41
41
41