Toshiba 20AF46C Panduan Servis - Halaman 22
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2-13: BRIGHT CENT
1.
Receive the monoscope 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 "BRI CENT".
4.
Press the VOL. UP/DOWN button on the remote control
until the white 10% is starting to be visible.
5.
Receive the monoscope 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 "BRI CENT".
9.
Press the VOL. UP/DOWN button on the remote control
until the brightness step No. becomes "80".
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 "COL. 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 120 ± 5% of the
white level. (Refer to Fig. 2-2)
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 "66".
white 100%
ELECTRICAL ADJUSTMENTS
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.
02
04
05
06
09
15
17
19
20
21
23
25
120%
26
27
30
31
32
Fig. 2-2
D-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. 2-3)
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".
"A"
FUNCTION
H.VCO
AFC GAIN
V.SHIFT
H.SIZE
VS CORRECTION
BRI.MAX
BRI.MIN
CONT.CENT
CONT.MIN
COL.MAX
COL.MIN
SHARPNESS
CB DL
CR DL
PARABOLA
CORNER
TRAPEZIUM
Fig. 2-3
RF
AV
CS
03
03
03
07
07
07
02
02
02
01
01
01
34
34
34
125
125
125
75
75
75
50
50
50
18
18
18
90
90
90
00
00
00
40
40
40
00
00
00
00
00
00
31
31
31
31
31
31
31
31
31
20AF46/20AF46C