ELECTRICAL ADJUSTMENTS
2-6: FOCUS2-10: BRIGHT CENT
1. Receive a 70dB monoscope pattern.1.Receive the PAL black pattern*. (RF Input)
2. Turn the Focus Volume fully counterclockwise once.2.Using the remote control, set the brightness and
3. Adjust the Focus Volume until picture is distinct.contrast to normal position.
3.Place the set with Aging Test for more than 15 minutes.
2-7: HORIZONTAL POSITION4.Activate the adjustment mode display of Fig. 1-1 and
press the channel button (17) on the remote control to
1.Receive the monoscope pattern from the Pattern
select "BRIGHT CENT".
Generator.
5.Press the VOL. +/- button on the remote control until
2.Using the remote control, set the brightness and
the screen begin to shine.
contrast to normal position.
6Receive the PAL black pattern*. (Audio Video Input)
3.Activate the adjustment mode display of Fig. 1-1 and
7.Set to the AV mode. Then perform the above
press the channel button (08) on the remote control to
adjustments 2~5.
select "H POSI (50)".
4.Press the VOL. +/- button on the remote control until*The Black Pattern means the whole black raster signal.
the SHIFT quantity of the OVER SCAN on right and leftSelect the "RASTER" of the pattern generator, set to
becomes minimum.the OFF position for each R, G and B.
5.Receive the monoscope pattern of NTSC. (Audio Video
Input)2-11: CONTRAST CENT
6.Set to the AV mode.
1.Activate the adjustment mode display of Fig. 1-1 and
7.Using the remote control, set the brightness and
press the channel button (22) on the remote control to
contrast to normal position.
select "CONTRAST CENT".
8.Activate the adjustment mode display of Fig. 1-1 and
2.Press the VOL. +/- button on on the remote control until
press the channel button (39) on the remote control to
the contrast step No. becomes "57".
select "H POSI (60)".
3.Receive a broadcast and check if the picture is normal.
9.Press the VOL. +/- button on the remote control until
4.Set to the AV mode. Then perform the above
the SHIFT quantity of the OVER SCAN on right and left
adjustment 1~3.
becomes minimum.
2-12: COLOR CENT
2-8: VERTICAL POSITION/VERTICAL LINEARITY
1.Receive the PAL color bar pattern. (RF Input)
1.Receive the monoscope pattern from the Pattern
2.Using the remote control, set the brightness, contrast
Generator.
and color to normal position.
2.Using the remote control, set the brightness and contrast
3.Connect the oscilloscope to TP801.
to normal position.
4.Activate the adjustment mode display of Fig. 1-1 and
3.Adjust the VR401 until the horizontal line becomes fit to
press the channel button (25) on the remote control to
the notch of the shadow mask.
select "COLOR CENT".
4.Adjust the VR420 until the SHIFT quantity of the OVER
5.Adjust the VOLTS RANGE VARIABLE knob of the
SCAN on upside and downside becomes minimum.
oscilloscope until the range between white 100% and
0% is set to 4 scales on the screen of the oscilloscope.
2-9: VERTICAL SIZE
6.Press the VOL. +/- button on the remote control until
1. Receive the monoscope pattern from the Patternthe red color level is adjusted to 90 ? 10% of the white
Generator.level. (Refer to Fig. 2-1)
2. Using the remote control, set the brightness and7.Receive the PAL color bar pattern. (Audio Video Input)
contrast to normal position.8.Set to the AV mode. Then perform the above
3. Activate the adjustment mode display of Fig. 1-1 andadjustments 2~6.
press the channel button (11) on the remote control to
select "V SIZE (50)".
4. Press the VOL. UP/DOWN button on the remote control
adjust the V.SIZE 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. Set to the AV mode.90% 100%
8. Using the remote control, set the brightness and
contrast to normal position.
9. Activate the adjustment mode display of Fig. 1-1 and
press the channel button (12) on the remote control to
select "V SIZE (60)".
10.Press the VOL. UP/DOWN button on the remote controlWhite 100%
Red Level
adjust the V.SIZE becomes 10 ? 2%.Fig. 2-1
11.Receive a broadcast and check if the picture is normal.
D-2 |
ACEC
