Sanyo PLC-XE45 Service Manual page 26

Electrical Adjustments
c
Pedestal adjustment [PC]
1. Receive the 16-step grey scale computer signal with
Computer1 [RGB] mode.
. Enter the service mode.
3. Connect an oscilloscope to test point "
and 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 "
and 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 "
and 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
Gain adjustment [PC]
1. Receive the 16-step grey scale computer signal with
Computer1 [RGB] mode.
. Enter the service mode.
3. Connect an oscilloscope to test point "
and chassis ground (-).
0
4. Select group no. " ", item no. "
minimum
amplitude "a" to be
value.
5. Connect an oscilloscope to test point "
and chassis ground (-).
4
6. Select item no. " " and adjust the amplitude "a" to be
minimum
by changing the Data value.
7. Connect an oscilloscope to test point "
and chassis ground (-).
5
8. Select item no. " " and adjust the amplitude "a" to be
minimum
by changing the Data value.
White Level
(a)
tP_G1
" (+)
0
" and change data
tP_R1
" (+)
tP_B1
" (+)
tP_G1
" (+)
3
" and adjust the
by changing the Data
tP_R1
" (+)
tP_B1
" (+)
-6-
b
Pedestal adjustment [1080i]
1. Receive the 16-step grey scale component signal
with Computer1 [Component1080i] mode.
. Enter the service mode.
3. Connect an oscilloscope to test point "
and 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 "
and chassis ground (-).
0
6. Select group no. " ", item no. "
value to adjust the pedestal level and black level to
be the same level.
7. Connect an oscilloscope to test point "
and chassis ground (-).
0
8. Select group no. " ", item no. "
value to adjust the pedestal level and black level to
be the same level.
n
Gain adjustment [1080i]
1. Receive the 16-step grey scale component signal
with Computer1 [Component1080i] mode.
. Enter the service mode.
3. Connect an oscilloscope to test point "
and chassis ground (-).
103
4. Select group no. "
minimum
amplitude "a" to be
value.
White Level
(a)
tP_G1
0
" and change data
tP_R1
1
" and change data
tP_B1
2
" and change data
tP_G1
" (+)
0
", item no. " " and adjust the
by changing the Data
" (+)
" (+)
" (+)