Toshiba 20A45C Instrukcja serwisowa - Strona 15

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Toshiba 20A45C Instrukcja serwisowa
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.
2-9: 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.
2-10: 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.
ELECTRICAL ADJUSTMENTS
D-2
2-12: 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
2-13: 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 (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.
2-14: 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 (19) 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 100 ± 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.
TV
14
B
Fig. 2-2