Toshiba 20AS23 Panduan Servis - Halaman 14

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Toshiba 20AS23 Panduan Servis
2-6: VERTICAL SIZE
1.
Receive the monoscope pattern.
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 (06) on the remote control to
select "V. SIZE".
4.
Press the VOL. UP/DOWN button on the remote control
until the SHIFT quantity of the OVER SCAN on upside and
downside becomes 10 ± 2%.
2-7: SUB BRIGHTNESS
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 (13) 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.
2-8: SUB TINT/SUB COLOR
1.
Receive the color bar pattern.
2.
Connect the oscilloscope to TP023.
3.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (22) on the remote control to
select "TINT".
4.
Press the VOL. UP/DOWN button on the remote control
until the section "A" becomes as straight line
(Refer to Fig. 2-1)
5.
Connect the oscilloscope to TP022.
6.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (19) on the remote control to
select "COL.CENT".
7.
Press the VOL. UP/DOWN button on the remote control
until the red color level is adjusted to 110 ± 10% of the
white level. (Refer to Fig. 2-2)
8.
Receive the color bar pattern. (Audio Video Input)
9.
Press the TV/VIDEO button on the remote control to set
to the AV mode. Then perform the above adjustments
2~7
ELECTRICAL ADJUSTMENTS
"A"
Fig. 2-1
D-2
white 100% red 110%
2-9: SUB CONTRAST
1.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (17) on the remote control to
select "CONT. MAX".
2.
Press the VOL. UP/DOWN button on the remote control
until the contrast step No. becomes "60".
3.
Receive a broadcast and check if the picture is normal.
4.
Press the TV/VIDEO button on the remote control to set to
the AV mode. Then perform the above adjustments 1~3.
2-10: OSD HORIZONTAL
1.
Activate the adjustment mode display of Fig. 1-1.
2.
Press the VOL. UP/DOWN button on the remote control
until the difference of A and B becomes minimum.
(Refer to Fig. 2-3)
00 OSD
A
Fig. 2-2
TV
28
B
Fig. 2-3