ELECTRICAL ADJUSTMENTS
2-6: FOCUS
1.Receive an 70dB monoscope pattern.
2.Turn the Focus Volume fully counterclockwise once.
3.Adjust the Focus Volume until picture is distinct.
2-7: HORIZONTAL POSITION
1.Receive the monoscope pattern from the Pattern Generator.
2.Using the remote control, set the brightness and contrast to normal position.
3.Activate the adjustment mode display of Fig.
4.Press the VOL. +/- button on the remote control until the SHIFT quantity of the OVER SCAN on right and left becomes minimum.
5.Receive the monoscope pattern of NTSC. (Audio Video Input)
6.Using the remote control, set the brightness and contrast to normal position.
7.Activate the adjustment mode display of Fig.
8.Press the VOL. +/- button on the remote control until the SHIFT quantity of the OVER SCAN on right and left becomes minimum.
2-8: VERTICAL POSITION, VERTICAL LINEARITY
1.Receive the monoscope pattern from the pattern Generator.
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.
4.Adjust the VR420 until the SHIFT quantity of the OVER SCAN on upside and downside becomes minimum.
2-9: VERTICAL SIZE
1.Receive the monoscope pattern from the Pattern Generator.
2.Using the remote control, set the brightness and contrast to normal position.
3.Activate the adjustment mode display of Fig.
4.Adjust by using the VOL. +/- button on the remote
control until the SHIFT quantity of the OVER SCAN on upside and downside becomes 8 ± 2%.
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.
9.Adjust by using the VOL. +/- button on the remote
control until the SHIFT quantity of the OVER SCAN on upside and downside becomes 10 ± 2%.
10.Receive a broadcast and check if the picture is normal.
2-10: BRIGHT CENT
1.Receive the PAL black pattern*. (RF Input)
2.Using the remote control, set the brightness and contrast to normal position.
3.Place the set with Aging Test for more than 15 minutes.
4.Activate the adjustment mode display of Fig.
5.Press the VOL. +/- button on the remote control until the screen begin to shine.
6Receive the PAL black pattern*. (Audio Video Input)
7.Set to the AV mode. Then perform the above adjustments 2~5.
*The Black Pattern means the whole black raster signal. Select the "RASTER" of the pattern generator, set to the OFF position for each R, G and B.
2-11: CONTRAST CENT
1.Activate the adjustment mode display of Fig.
2.Press the VOL. +/- button on the remote control until the contrast step No. becomes "27".
3.Receive a broadcast and check if the picture is normal.
4.Set to the AV mode.
5.Activate the adjustment mode display of Fig.
6.Press the VOL. +/- button on the remote control until the contrast step No. becomes "29".
7.Receive a broadcast and check if the picture is normal.
2-12: COLOR CENT
1.Receive the PAL color bar pattern. (RF Input)
2.Using the remote control, set the brightness, contrast and color to normal position.
3.Connect the oscilloscope to TP022.
4.Activate the adjustment mode display of Fig.
5.Adjust the VOLTS RANGE VARIABLE knob of the oscilloscope until the range between white 100% and 0% is set to 5 scales on the screen of the oscilloscope.
6.Press the VOL. +/- button on the remote control until the red color level is adjusted to 100 ± 10% of the white level. (Refer to Fig.
7.Receive the PAL color bar pattern. (Audio Video Input)
8.Set to the AV mode. Then perform the above adjustments 2~6.
100%
Fig.