Toshiba 27AF45 Service Manual page 20

2-4: 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 TP804.
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 125 ± 5% of the
white level. (Refer to Fig. 2-1)
7. Receive the video color bar pattern. (Audio Video Input)
8. Set to the 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 "70".
white 100%
2-5: 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 TP806.
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. 2-2)
6. Receive the video color bar pattern. (Audio Video Input)
7. Set to the 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 "55".
ELECTRICAL ADJUSTMENTS
125%
Fig. 2-1
D-2
"A"
2-6: FOCUS
1. Receive the monoscope pattern.
2. Turn the Focus Volume fully counterclockwise once.
3. Adjust the Focus Volume until picture is distinct.
2-7: 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. 2-3)
2-8: 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 (07) 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 ± 3%.
Fig. 2-2
horizontal line
Notch
Shadow mask
Fig. 2-3
27AF45/27AF45C