-8-
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 “
TP531
” (+)
and chassis ground (-).
4. Select group no. “
4
”, item no. “
4
” and set data value
to “600”, and then decrease data to adjust waveform
“a” to be minimum amplitude.
5. Connect an oscilloscope to test point “
TP501
” (+)
and chassis ground (-).
6. Select item no. “
5
” and set data value to “600”, and
then decrease data to adjust waveform “a” to be mini-
mum amplitude.
7. Connect an oscilloscope to test point “
TP561
” (+)
and chassis ground (-).
8. Select item no. “
3
” and set data value to “600”, and
then decrease data to adjust waveform “a” to be mini-
mum amplitude.
White Level
(a)
HDTV Gain adjustment
1. Receive the 16-step gray scale video signal with
Input 3 [VIDEO]
mode.
2. Enter the service mode.
3. Connect an oscilloscope to test point “
TP4151G
” (+)
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 “
TP4151B
” (+)
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 “
TP4151R
” (+)
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.
Pedestal Lebel = Black Lebel
VIDEO Pedestal adjustment
1. Receive the 16-step gray scale video signal with
Input 3 [VIDEO]
mode.
2. Enter the service mode.
3. Connect an oscilloscope to test point “
TP4151G
” (+)
and chassis ground (-).
4. Select group no. “
3
”, item no. “
0
” and change data
value to adjust amplitude “a” to be
0.8
±0.1V.
5. Connect an oscilloscope to test point “
TP4151B
” (+)
and chassis ground (-).
6. Select item no. “
4
” and change data value to adjust
amplitude “a” to be
0.8
±0.1V.
7. Connect an oscilloscope to test point “
TP4151R
” (+)
and chassis ground (-).
8. Select item no. “
2
and change data value to adjust
amplitude “a” to be
0.8
±0.1V.
Note: This adjustment should be done after VIDEO
Pedestal adjustment.
(a)
VIDEO A/D Input adjustment
Electrical Adjustments
Summary of Contents for PLC-XP46
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Page 52: ... MK3AA Jun 2004 BB 400 Printed in Japan SANYO Electric Co Ltd ...