Sanyo PLC-XP51, Руководство по обслуживанию

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1. Receive the 16-step gray scale computer signal with
Input 1 [RGB(Analog)] mode.
2. Enter the service mode.
3. Connect an oscilloscope to test point “
TPNRS
” (+)
and chassis ground (-).
4. Select group no. “
5
”, item no. “
4
” and change data
value to adjust amplitude “ a ” to be
2.0
±0.1V.
5. Select item no. “
3
” and change data value to adjust
amplitude “ b ” to be
7.0
±0.1V.
(a)
(b)
GND
v
NRS adjustment
1. Receive the 16-step gray scale computer signal with
Input 1 [RGB(Analog)] mode.
2. Enter the service mode.
3. Connect a digital voltmeter to test point “
TPV1G
” (+)
and chassis ground (-).
4. Select group no. “
5
”, item no. “
5
” and change data
value to adjust the voltage to be
6.50
±0.1Vdc.
5. Connect a digital voltmeter to test point “
TPV1B
” (+)
and chassis ground (-).
6. Select item no. “
6
” and change data value to adjust
the voltage to be
6.50
±0.1Vdc.
7. Connect a digital voltmeter to test point “
TPV1R
” (+)
and chassis ground (-).
8. Select item no. “
7
” and change data value to adjust
the voltage to be
6.50
±0.1Vdc.
9. Connect a digital voltmeter to test point “
TPV2G
” (+)
and chassis ground (-).
10. Select group no. “
5
”, item no. “
8
” and change data
value to adjust the voltage to be
7.50
±0.1Vdc.
11. Connect a digital voltmeter to test point “
TPV2B
” (+)
and chassis ground (-).
12. Select item no. “
9
” and change data value to adjust
the voltage to be
7.50
±0.1Vdc.
13. Connect a digital voltmeter to test point “
TPV2R
” (+)
and chassis ground (-).
14. Select item no. “
10
” and change data value to adjust
the voltage to be
7.50
±0.1Vdc.
b
Video center adjustment
1. Receive the 16-step gray scale computer signal with
Input 1 [RGB(Analog)] mode.
2. Enter the service mode.
3. Connect an oscilloscope to test point “
TP35G
” (+)
and chassis ground (-).
4. Select group no. “
5
”, item no. “
0
” and change data
value to adjust amplitude “ a ” to be
10.0
±0.1V.
3. Connect an oscilloscope to test point “
TP35B
” (+)
and chassis ground (-).
4. Select item no. “
1
” and change data value to adjust
amplitude “ a ” to be
10.0
±0.1V.
3. Connect an oscilloscope to test point “
TP35R
” (+)
and chassis ground (-).
4. Select item no. “
2
” and change data value to adjust
amplitude “ a ” to be
10.0
±0.1V.
(a)
black level
black level
n
PC black Level adjustment
1. Receive the 16-step gray scale computer signal with
Input 1 [RGB(Analog)] mode.
2. Enter the service mode.
3. Select group no. “
500
”, item no. “
0
” and change data
value to adjust the green noise on the white 0% area
of screen to the first point of the deepest green.
4. Select item no. “
1
” and change data value to adjust
the blue noise on the white 0% area of screen to the
first point of the deepest blue.
4. Select item no. “
2
” and change data value to adjust
the red noise on the white 0% area of screen to the
first point of the deepest red.
m
PC pedestal adjustment
Electrical Adjustments