-31-
Electrical Adjustments
Pedestal adjustment [Component]
1. Enter the service mode.
2. Receive the 16-step grey scale 480i-component sig-
nal with Computer2 [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 8 color 100% color bar 480i-component
signal with Computer2 [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.
4. Auto Calibration adjustment [Component]
Below adjustments are performed when the above auto
calibration is failed.
Gain adjustment [Component]
1. Enter the service mode.
2. Receive the 16-step grey scale 480i-component signal
with Computer2 [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 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.
5. Auto Calibration adjustment [Video]
Gain adjustment [Video]
1. Enter the service mode.
2. Receive the 16-step grey scale composite video signal
with 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.
1. Enter the service mode.
2. Receive the 50%-Whole Gray computer signal with
Computer2 [RGB] mode.
3. Select group no. “100”, item no. “92” and change
data value to “2” to reduce the panel frequency.
4. Project only green light component to the screen.
5. Select group no. “101”, item no. “1” and change
data value to obtain the minimum flicker on the
screen.
6. Project only red light component to the screen.
7. Select item no. “0” and change data value to obtain
the minimum flicker on the screen.
8. Project only blue light component to the screen.
9. Select item no. “2 and change data value to obtain
the minimum flicker on the screen.
10. Select group no. “100”, item no. “92” and change
data value to “0” to reset the panel frequency.
6. Common Center adjustment
To Next Page
Loading...
