ELECTRICAL ADJUSTMENTS
2-7: WHITE BALANCE2-10: VERTICAL POSITION/VERTICAL LINEARITY
NOTE: Adjust after performing CUT OFF adjustment. 1.Receive the monoscope pattern from the Pattern
Generator.
1.Place the set with Aging Test for more than 10 minutes.
2.Using the remote control, set the brightness and
2.Receive the gray scale pattern from the Pattern
contrast to normal position.
Generator.
3.Adjust the VR401 until the horizontal line becomes fit to
3.Using the remote control, set the brightness and
the notch of the shadow mask.
contrast to normal position.
4.Adjust the VR420 until the SHIFT quantity of the OVER
4.Activate the adjustment mode display of Fig. 1-1 and
SCAN on upside and downside becomes minimum.
press the channel button (03) on the remote control to
select "R DRIVE".
2-11: BRIGHT CENT
5.Press the Page UP/DOWN button on the remote control
to select the "R DRIVE", "G DRIVE", "M R CUTOFF" or1.Receive the PAL black pattern*. (RF Input)
"M G CUTOFF".2.Using the remote control, set the brightness and
6.Adjust the VOL. +/- button on the remote control tocontrast to normal position.
whiten the R DRIVE, G DRIVE, M R CUT OFF, and M G3.Place the set with Aging Test for more than 15 minutes.
CUT OFF at each step tone sections equally.4.Activate the adjustment mode display of Fig. 1-1 and
7.Perform the above adjustments 5 and 6 until the whitepress the channel button (17) on the remote control to
color is looked like a white.select "BRIGHT CENT".
5.Press the VOL. +/- button on the remote control until
2-8: HORIZONTAL POSITIONthe screen begin to shine.
6Receive the PAL black pattern*. (Audio Video Input)
1.Receive the monoscope pattern from the Pattern
7.Set to the AV mode. Then perform the above
Generator.
adjustments 2~5.
2.Using the remote control, set the brightness and
contrast to normal position.*The Black Pattern means the whole black raster signal.
3.Activate the adjustment mode display of Fig. 1-1 andSelect the "RASTER" of the pattern generator, set to
press the channel button (08) on the remote control tothe OFF position for each R, G and B.
select "H POSI (50)".
4.Press the VOL. +/- button on the remote control until2-12: COLOR CENT
the SHIFT quantity of the OVER SCAN on right and left
1.Receive the PAL color bar pattern. (RF Input)
becomes minimum.
2.Using the remote control, set the brightness, contrast
5.Receive the monoscope pattern of NTSC. (Audio Video
and color to normal position.
Input)
3.Connect the oscilloscope to TP022.
6.Using the remote control, set the brightness and
4.Activate the adjustment mode display of Fig. 1-1 and
contrast to normal position.
press the channel button (25) on the remote control to
7.Activate the adjustment mode display of Fig. 1-1 and
select "COLOR CENT".
press the channel button (39) on the remote control to
5.Adjust the VOLTS RANGE VARIABLE knob of the
select "H POSI (60)".
oscilloscope until the range between white 100% and
8.Press the VOL. +/- button on the remote control until
0% is set to 5 scales on the screen of the oscilloscope.
the SHIFT quantity of the OVER SCAN on right and left
6.Press the VOL. +/- button on the remote control until
becomes minimum.
the red color level is adjusted to 85 ? 10% of the white
level. (Refer to Fig. 2-1)
2-9: VERTICAL SIZE
7.Receive the PAL color bar pattern. (Audio Video Input)
1. Receive the monoscope pattern from the Pattern8.Set to the AV mode. Then perform the above
Generator.adjustments 2~6.
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 (11) on the remote control to
select "V SIZE (50)".
4. Adjust by using the VOL. +/- button on the remote
control so that the Up/Down OVER SCAN Quantity
100%
becomes equal to the Right/Left OVER SCAN Quantity.85%
5. Receive a broadcast and check if the picture is normal.
6. Receive the monoscope pattern of NTSC. (Audio Video
Input)
7. Using the remote control, set the brightness and
contrast to normal position.
8. Activate the adjustment mode display of Fig. 1-1 andFig. 2-1
press the channel button (12) on the remote control to
select "V SIZE (60)".
9. Adjust by using the VOL. +/- button on the remote
control so that the Up/Down OVER SCAN Quantity
becomes equal to the Right/Left OVER SCAN Quantity.
D-2 |
ACEC
TOSHIBA
