Sanyo PLC-XP41, Руководство по обслуживанию

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Electrical Adjustments
1. Receive the 16-step gray scale computer signal with
Input 1 [COMPUTER] mode.
2. Enter the service mode.
3. Select group no. “
4
”, item no. “
6
” and change data
value to reproduce the proper gray scale picture on
the screen.
PC Gamma Shift adjustment
[480p-PEDESTAL ADJUSTMENT]
1. Receive the 16-step gray scale component signal
[480p] with Input 3 [COMPONENT] mode.
2. Enter the service mode.
3. Connect an oscilloscope to test point “
TP21G
” (+)
and chassis ground (-).
4. Select group no. “
3
”, item no. “
1
” and change data
value to adjust the pedestal level and black level to be
the same level.
5. Connect an oscilloscope to test point “
TP21B
” (+)
and chassis ground (-).
6. Select group no. “
5
”, item no. “
14
” and change data
value to adjust the pedestal level and black level to be
the same level.
7. Connect an oscilloscope to test point “
TP21R
” (+)
and chassis ground (-).
8. Select item no. “
13
and change data value to adjust
the pedestal level and black level to be the same
level.
[1080i-PEDESTAL ADJUSTMENT]
1. Receive the 16-step gray scale component signal
[1080i] with Input 3 [COMPONENT] mode.
2. Enter the service mode.
3. Connect an oscilloscope to test point “
TP21G
” (+)
and chassis ground (-).
4. Select group no. “
3
”, item no. “
1
” and change data
value to adjust the pedestal level and black level to be
the same level.
5. Connect an oscilloscope to test point “
TP21B
” (+)
and chassis ground (-).
6. Select item no. “
14
” and change data value to adjust
the pedestal level and black level to be the same
level.
7. Connect an oscilloscope to test point “
TP21R
” (+)
and chassis ground (-).
Pedestal Lebel = Black Lebel
HDTV Pedestal adjustment
8. Select item no. “
13
and change data value to adjust
the pedestal level and black level to be the same
level.
[480p-A/D INPUT ADJUSTMENT]
1. Receive the 16-step gray scale component signal
[480p] with Input 3 [COMPONENT] mode.
2. Enter the service mode.
3. Connect an oscilloscope to test point “
TP21G
” (+)
and chassis ground (-).
4. Select group no. “
3
”, item no. “
0
” and change data
value to adjust amplitude “a” to be
0.9
±0.1V.
5. Connect an oscilloscope to test point “
TP21B
” (+)
and chassis ground (-).
6. Select item no. “
4
” and change data value to adjust
amplitude “a” to be
0.9
±0.1V.
7. Connect an oscilloscope to test point “
TP21R
” (+)
and chassis ground (-).
8. Select item no. “
2
and change data value to adjust
amplitude “a” to be
0.9
±0.1V.
[1080i-A/D INPUT ADJUSTMENT]
1. Receive the 16-step gray scale component signal
[1080i] with Input 3 [COMPONENT] mode.
2. Enter the service mode.
3. Connect an oscilloscope to test point “
TP21G
” (+)
and chassis ground (-).
4. Select group no. “
3
”, item no. “
0
” and change data
value to adjust amplitude “a” to be
0.9
±0.1V.
5. Connect an oscilloscope to test point “
TP21B
” (+)
and chassis ground (-).
6. Select item no. “
4
” and change data value to adjust
amplitude “a” to be
0.9
±0.1V.
7. Connect an oscilloscope to test point “
TP21R
” (+)
and chassis ground (-).
8. Select item no. “
2
and change data value to adjust
amplitude “a” to be
0.9
±0.1V.
Note: This adjustment should be done after HDTV
Pedestal adjustment.
(a)
(a)
HDTV A/D Input adjustment