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Electrical Adjustment
1. Enter the service mode.
2. Receive the 16-step grey scale computer signal with
Input1 [RGB] mode.
3. Connect an oscilloscope to test point “TP35G” (+)
and chassis ground (-).
4. Select group no. “0”, item no. “3” and adjust the ampli-
tude “a” to be minimum by changing the Data value.
5. Connect an oscilloscope to test point “TP35R” (+) and
chassis ground (-).
6. Select group no. “0”, item no. “4” and adjust the ampli-
tude “a” to be minimum by changing the Data value.
7. Connect an oscilloscope to test point “TP35B” (+) and
chassis ground (-).
8. Select group no. “0”, item no. “5” and adjust the ampli-
tude “a” to be minimum by changing the Data value.
c PC-Gain adjustment
1. Enter the service mode.
2. Receive the 16-step grey scale computer signal with
Input1 [RGB] mode.
3. To start the auto-calibration for PC adjustment, select
group no. “260”, item no. “0” and then change data
value from “0” to “1”. After the auto-calibration com-
pleted, "OK" will appear on the screen.
c PC-Auto Calibration adjustment
1. Enter the service mode.
2. Receive the 16-step grey scale composite video sig-
nal with Input3 [Video] mode.
3. To start the auto-calibration for Video adjustment, se-
lect group no. “260”, item no. “0” and then change
data value from “0” to “1”. After the auto-calibration
completed, "OK" will appear on the screen.
v Video-Auto Calibration adjustment
1. Enter the service mode.
2. Receive the 16-step grey scale 480i-component video
signal with Input2 [Component] mode.
3. To start the auto-calibration for 480i-component ad-
justment, select group no. “260”, item no. “0” and then
change data value from “0” to “1”. After the auto-cali-
bration completed, "OK" will appear on the screen.
b 480i-Auto Calibration adjustment
1. Enter the service mode.
2. Receive the 16-step grey scale computer signal with
Input1 [RGB] mode.
3. Connect an oscilloscope to test point “TP35G” (+)
and chassis ground (-).
4. Select group no. “0”, item no. “0” and change data
value to adjust the pedestal level and black level to be
the same level.
5. Connect an oscilloscope to test point “TP35R” (+) and
chassis ground (-).
6. Select item no. “1” and change data value to adjust the
pedestal level and black level to be the same level.
7. Connect an oscilloscope to test point “TP35B” (+) and
chassis ground (-).
8. Select item no. “2” and change data value to adjust the
pedestal level and black level to be the same level.
Pedestal Lebel
Black Lebel
c PC-Pedestal adjustment
1. Enter the service mode.
2. Receive the 16-step grey scale composite video signal
with Input3 [Video] mode.
3. Connect an oscilloscope to test point “TP35G” (+)
and chassis ground (-).
4. Select group no. “20”, item no. “2” and adjust the
amplitude “a” to be minimum by changing the Data
value.
v Video-Gain adjustment
1. Enter the service mode.
2. Receive the 16-step grey scale 480i-component video
signal with Input2 [Component] mode.
3. Connect an oscilloscope to test point “TP35G” (+)
and chassis ground (-).
4. Select group no. “20”, item no. “0” and adjust the
amplitude “a” to be minimum by changing the Data
value.
b 480i-Gain adjustment
Perform these manual adjustments instead of the
Auto-Calibration adjustment from [3] to [5] when
the auto-calibration is failed.
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