Sanyo PLC-XU56 Service Manual page 23

Electrical Adjustments
x
Clamp adjustment [PC]
1. Receive the 16-step grey scale computer signal with
Computer2 [RGB] mode.
2. Enter the service mode.
3. Connect an oscilloscope to test point "
chassis ground (-).
0
4. Select group no. " ", item no. "
value to adjust the pedestal level and black level to be
the same level.
5. Connect an oscilloscope to test point "
chassis ground (-).
1
6. Select item no. " " and change data value to adjust the
pedestal level and black level to be the same level.
7. Connect an oscilloscope to test point "
chassis ground (-).
2
8. Select item no. " " and change data value to adjust the
pedestal level and black level to be the same level.
c
Clamp adjustment [AV]
1. Receive the 16-step gray scale composite video sig-
nal with Video [Video] mode.
2. Enter the service mode.
3. Connect an oscilloscope to test point "
chassis ground (-).
0
4. Select group no. " ", item no. "
value to adjust the pedestal level and black level to be
the same level.
5. Connect an oscilloscope to test point "
chassis ground (-).
1
6. Select item no. " " and change data value to adjust the
pedestal level and black level to be the same level.
7. Connect an oscilloscope to test point "
chassis ground (-).
2
8. Select item no. " " and change data value to adjust the
pedestal level and black level to be the same level.
v
1. Receive the 16-step grey scale component signal
2. Enter the service mode.
TPG1
" (+) and 3. Connect an oscilloscope to test point "
0
" and change data 4. Select group no. "
TPR1
" (+) and 5. Connect an oscilloscope to test point "
6. Select group no. "
TPB1
" (+) and
7. Connect an oscilloscope to test point "
8. Select group no. "
TPG1
" (+) and
0
" and change data
TPR1
" (+) and
TPB1
" (+) and
-23-
Clamp adjustment [COMPONENT]
with Computer2 [Component] mode.
chassis ground (-).
0
", item no. "
value to adjust the pedestal level and black level to be
the same level.
chassis ground (-).
0
", item no. "
value to adjust the pedestal level and black level to be
the same level.
chassis ground (-).
0
", item no. "
value to adjust the pedestal level and black level to be
the same level.
TPG1
" (+) and
0
" and change data
TPR1
" (+) and
1
" and change data
TPB1
" (+) and
2
" and change data