Sanyo PLC-XU4000, Руководство по обслуживанию

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Electrical Adjustments
1. Enter the service mode.
2. Connect a digital voltmeter to test point “
tPFANA
” (+)
and chassis ground (-). Select group no. “
250
”, item
no. “
0
” and change data value to adjust voltage to be
4.0 ±0.1V
.
3. Connect a digital voltmeter to test point “
tPFANA
” (+)
and chassis ground (-). Select item no. “
1
” and change
data value to adjust voltage to be
13.5 ±0.1V
.
4. Connect a digital voltmeter to test point “
tPFANB
” (+)
and chassis ground (-). Select item no. “
2
” and change
data value to adjust voltage to be
5.2 ±0.1V
.
5. Connect a digital voltmeter to test point “
tPFANB
” (+)
and chassis ground (-). Select item no. “
3
” and change
data value to adjust voltage to be
13.5 ±0.1V
.
6. Connect a digital voltmeter to test point “
tPFANc
” (+)
and chassis ground (-). Select item no. “
4
” and change
data value to adjust voltage to be
3.5 ±0.1V
.
7. Connect a digital voltmeter to test point “
tPFANc
” (+)
and chassis ground (-). Select item no. “
5
” and change
data value to adjust voltage to be
12 ±0.1V
.
1. Fan control adjustment
Gain adjustment [Pc]
1. Enter the service mode.
2. Receive the 16-step grey scale computer signal with
computer1 [rGB]
mode.
3. Connect an oscilloscope to test point “
tP35G
” (+) and
chassis ground (-).
4. Select group no. “
0
”, item no. “
3
” and adjust the ampli-
tude “
a
” to be minimum by changing the Data value.
5. Connect an oscilloscope to test point “
tP35r
” (+) and
chassis ground (-).
6. Select group no. “
0
”, item no. “
4
” and adjust the ampli-
tude “
a
” to be minimum by changing the Data value.
7. Connect an oscilloscope to test point “
tP35B
” (+) and
chassis ground (-).
8. Select group no. “
0
”, item no. “
5
” and adjust the ampli-
tude “
a
” to be minimum by changing the Data value.
(a)
White Level
1. Enter the service mode.
2. Receive the 16-step grey scale computer signal with
computer1 [rGB]
mode.
3. To start the auto-calibration for PC adjustment, select
group no. “
260
”, item no. “
0
” and then change data
value from “
0
” to “
1
”. After the auto-calibration com-
pleted, "OK" will appear on the screen.
2. Auto calibration adjustment [Pc]
Below adjustments are performed when the above auto
calibration is failed.
Pedestal adjustment [Pc]
1. Enter the service mode.
2. Receive the 16-step grey scale computer signal with
computer1 [rGB]
mode.
3. Connect an oscilloscope to test point “
tP35G
” (+) and
chassis ground (-).
4. Select Group No. “
0
”, Item No. “
0
” and change data
value to adjust the black level to be minimum.
5. Connect an oscilloscope to test point “
tP35r
” (+) and
chassis ground (-).
6. Select Item No. “
1
” and change data value to adjust the
black level to be minimum.
7. Connect an oscilloscope to test point “
tP35B
” (+) and
chassis ground (-).
8. Select Item No. “
2
” and change data value to adjust the
black level to be minimum.
Blac
k Lebel
Adjustments item no. [2] and [4] are carried out
at the spare parts shipment in the factory, there-
fore they are not required when the main board is
replaced with new one.