Toshiba 20A46C Manual de servicio - Página 15

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Toshiba 20A46C Manual de servicio
2-5: VERTICAL POSITION
1.
Receive the monoscope pattern.
2.
Using the remote control, set the brightness and contrast
to normal position.
3.
Adjust the VR401 until the horizontal line becomes fit to
the notch of the shadow mask.
(Refer to Fig. 2-1)
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 9 ± 2%.
2-7: VERTICAL LINEARITY
NOTE: Adjust after performing adjustments in section 2-6.
After the adjustment of Vertical Linearity, reconfirm
the Vertical Position and Vertical Size adjustments.
1.
Receive the monoscope pattern.
2.
Using the remote control, set the brightness, contrast,
to normal position.
3.
Adjust the VR402 until the SHIFT quantity of the OVER
SCAN on upside and downside becomes minimum.
2-8: HORIZONTAL PHASE
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 (05) on the remote control to
select "H.PHASE".
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.
ELECTRICAL ADJUSTMENTS
horizontal line
Notch
Shadow mask
Fig. 2-1
2-9: CONTRAST MAX
1.
Receive the color bar 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 "CONT MAX".
4.
Press the VOL. UP/DOWN button on the remote
control until the contrast step No. becomes "90".
5.
Receive a broadcast and check if the picture is normal.
6.
Receive the color bar pattern. (Audio Video Input)
7.
Press the TV/VIDEO button on the remote control to
set to the AV mode.
8.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (17) on the remote control
to select "CONT MAX".
9.
Press the VOL. UP/DOWN button on the remote
control until the contrast step No. becomes "100".
10.
Receive a broadcast and check if the picture is normal.
2-10: OSD POSITION
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. 2-2)
00 OSD
A
2-11: 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 (13) on the remote control to
select "BRI CENT".
4.
Press the VOL. UP/DOWN button on the remote control
until the screen begin to shine.
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.
D-2
TV
14
B
Fig. 2-2