Toshiba 13A25 Service Manual - Page 20

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Toshiba 13A25 Service Manual
White 100% Red 110%
2-5: HORIZONTAL PHASE
1.
Receive the monoscope pattern.
2.
Using the adjustment control, set the brightness and
contrast to normal position.
3.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (05) on the remote control to
select "H.PHAS".
4.
Press the VOL. UP/DOWN button on the remote
control until the SHIFT quantity of the OVER SCAN on
right and left becomes minimum.
2-6: VERTICAL SIZE
1.
Receive the monoscope Pattern.
2.
Using the adjustment 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: VERTICAL SHIFT
1.
Receive the monoscope Pattern.
2.
Using the adjustment control, set the brightness and
contrast to normal position.
3.
Activate the adjustment mode display of Fig. 1-1
and press the channel button (07) on the remote
control to select "V.SFT".
4.
Press the VOL. UP/DOWN button on the remote
control until the horizontal line becomes fit to the
notch of the shadow mask. (Refer to Fig. 2-3)
ELECTRICAL ADJUSTMENTS
"A"
Fig. 2-1
Fig. 2-2
D-2
2-8: 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. 2-4)
00 OSD
A
2-9: BRIGHT MANUAL
1.
Receive the monoscope pattern.(RF Input)
2.
Using the adjustment 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.
Press the TV/VIDEO button on the remote to set to the
AV mode. Then perform the above adjustment 2~4.
2-10: SUB CONTRAST
1.
Receive an 70dB the color bar pattern.
2.
Activate the adjustment mode display of Fig. 1-1
press the channel button (17) on the remote control
to select "CONT.MAX".
3.
Press the VOL. UP/DOWN button on the remote control
until the contrast step No. becomes "43".
4.
Press the TV/VIDEO button on the remote control to set
to the AV mode.
5.
Activate the adiustment mode display of Fig. 1-1
paess the channel button (17) on the remote control
to select "CONT.MAX".
6.
Press the VOL.UP/DOWN button on the remote control
unitil the contrast step No. becomes "52".
7.
Receive a broadcast and check if the picture is normal.
horizontal line
Notch
Shadow mask
Fig. 2-3
TV
19
B
Fig. 2-4
13A25/13A25C