Sanyo PLC-XU47 Service Manual page 24

Electrical Adjustments
x
Pedestal adjustment [PC]
1. Receive the 16-step grey scale computer signal with
Computer1 [RGB] mode.
2. Enter the service mode.
3. Connect an oscilloscope to test point "
(+) and chassis ground (-).
203
4. Select item no. " " and change data value to adjust
the pedestal level and black level to be the same level.
5. Connect an oscilloscope to test point "
(+) and chassis ground (-).
204
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 (-).
205
8. Select item no. " " and change data value to adjust
the pedestal level and black level to be the same level.
c
Pedestal adjustment [AV-Component]
1. Receive the 16-step gray scale 1080i component
video signal with Computer1 [Component] mode.
2. Enter the service mode.
3. Connect an oscilloscope to test point "
(+) and chassis ground (-).
203
4. Select item no. " " and change data value to adjust
the pedestal level and black level to be the same level.
5. Connect an oscilloscope to test point "
(+) and chassis ground (-).
204
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 (-).
205
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.
2. Enter the service mode.
TPVIDEOG
" 3. Connect an oscilloscope to test point "
(+) and chassis ground (-).
4. Select item no. "
minimum
TPVIDEOR
" 5. Connect an oscilloscope to test point "
(+) and chassis ground (-).
6. Select item no. "
minimum
TPVIDEOB
" 7. Connect an oscilloscope to test point "
(+) and chassis ground (-).
8. Select item no. "
minimum
b
Gain adjustment [AV-Video]
1. Receive the 16-step grey scale composite video sig-
nal with Video [Video] mode.
2. Enter the service mode.
TPVIDEOG 3. Connect an oscilloscope to test point "
"
(+) and chassis ground (-).
4. Select item no. "
minimum
TPVIDEOR 5. Connect an oscilloscope to test point "
"
(+) and chassis ground (-).
6. Select item no. "
minimum
7. Connect an oscilloscope to test point "
TPVIDEOB
"
(+) and chassis ground (-).
8. Select item no. "
minimum
-24-
7
" and adjust the amplitude "a" to be
by changing the Data value.
8
" and adjust the amplitude "a" to be
by changing the Data value.
9
" and adjust the amplitude "a" to be
by changing the Data value.
White Level
(a)
7
" and adjust the amplitude "a" to be
by changing the Data value.
8
" and adjust the amplitude "a" to be
by changing the Data value.
9
" and adjust the amplitude "a" to be
by changing the Data value.
White Level
(a)
TPVIDEOG
"
TPVIDEOR
"
TPVIDEOB
"
TPVIDEOG
"
TPVIDEOR
"
TPVIDEOB
"