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Electrical Adjustments
Gain adjustment [Component]
1. Enter the service mode.
2. Receive the 16-step grey scale 480i-component signal
with Computer1 [Component] mode.
3. Connect an oscilloscope to test point “TP_G1” (+) 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.
1. Enter the service mode.
2. Receive the 16-step grey scale composite video sig-
nal with Video [Video] mode.
3. To start the auto-calibration for Component adjust-
ment, 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 Auto Calibration adjustment [Video]
Gain adjustment [Video]
1. Enter the service mode.
2. Receive the 16-step grey scale composite video signal
with Video [Video] mode.
3. Connect an oscilloscope to test point “TP_G1” (+) and
chassis ground (-).
4. Select group no. “20”, item no. “0” and adjust the ampli-
tude “a” to be minimum by changing the Data value.
below adjustment is performed when the above auto
calibration is failed.
Pedestal adjustment [Component]
1. Enter the service mode.
2. Receive the 16-step grey scale 480i-component signal
with Computer1 [Component] mode.
3. Connect an oscilloscope to test point “TP_G1” (+)
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 “TP_R1” (+) 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 “TP_B1” (+) 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
1. Enter the service mode.
2. Receive the 16-step grey scale 480i-component sig-
nal with Computer1 [Component] mode.
3. To start the auto-calibration for Component adjust-
ment, 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.
Below adjustments are performed when the above auto
calibration is failed.
v Auto Calibration adjustment [Component]
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