Toshiba 20AF45 Service Manual page 21

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 (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 "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 120 ± 5% of the
white level. (Refer to Fig. 2-3)
7. Receive the video color bar pattern. (Audio Video Input)
8. Place the set in 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".
ELECTRICAL ADJUSTMENTS
TV
29
B
Fig. 2-2
white 100%
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. 2-4)
6. Receive the video color bar pattern. (Audio Video Input)
7. Place the set in 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".
D-3
120%
Fig. 2-3
"A"
Fig. 2-4
20AF45/20AF45C