Sanyo PLC-WXE46, Руководство по обслуживанию

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Electrical Adjustments
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.
P
edestal Lebel
Blac
k Lebel
1. Enter the service mode.
. 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.
7. Auto Calibration adjustment [Video]
Gain adjustment [Video]
1. Enter the service mode.
. Receive the 16-step grey scale composite video signal
with
Video [Video]
mode.
3. Connect an oscilloscope to test point “
tP35G
” (+) 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.
(a)
White Level
below adjustment is performed when the above auto
calibration is failed.
Gain adjustment [Component]
1. Enter the service mode.
. Receive the 16-step grey scale computer signal with
Computer1 [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.
(a)
White Level
1. Enter the service mode.
. Receive the 8 color 100% color bar 480i-component
signal 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.
6. Auto Calibration adjustment [Component]
Below adjustments are performed when the above auto
calibration is failed.
Pedestal adjustment [Component]
1. Enter the service mode.
. Receive the 16-step grey scale 480i-component signal
with
Computer1 [Component]
mode.
3. Connect an oscilloscope to test point “
tP35G
” (+) and
chassis ground (-).
4. Select group no. “
0
”, item no. “
0
” and change data val-
ue to adjust the pedestal level and black level to be the
same level.
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.
(a)
White Level