Fan Control Adjustment - Sanyo PLC-XU4000 Service Manual

Electrical Adjustments

1. Fan control adjustment

1. Enter the service mode.
2. Connect a digital voltmeter to test point "
and chassis ground (-). Select group no. "
0
no. " " and change data value to adjust voltage to be
4.0 ±0.1V
.
3. Connect a digital voltmeter to test point "
and chassis ground (-). Select item no. "
data value to adjust voltage to be
4. Connect a digital voltmeter to test point "
and chassis ground (-). Select item no. "
data value to adjust voltage to be
5. Connect a digital voltmeter to test point "
and chassis ground (-). Select item no. "
data value to adjust voltage to be
6. Connect a digital voltmeter to test point "
and chassis ground (-). Select item no. "
data value to adjust voltage to be
7. Connect a digital voltmeter to test point "
and chassis ground (-). Select item no. "
data value to adjust voltage to be
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.
2. Auto calibration adjustment [Pc]
1. Enter the service mode.
tPFANA
" (+)
2. Receive the 16-step grey scale computer signal with
250
", item
3. To start the auto-calibration for PC adjustment, select
tPFANA
" (+)
1
" and change
13.5 ±0.1V
.
Below adjustments are performed when the above auto
tPFANB
" (+)
calibration is failed.
2
" and change
5.2 ±0.1V
.
Pedestal adjustment [Pc]
tPFANB
" (+)
1. Enter the service mode.
3
" and change
2. Receive the 16-step grey scale computer signal with
13.5 ±0.1V
.
tPFANc
" (+)
3. Connect an oscilloscope to test point "
4
" and change
3.5 ±0.1V
.
4. Select Group No. "
tPFANc
" (+)
5
" and change
5. Connect an oscilloscope to test point "
12 ±0.1V
.
6. Select Item No. "
7. Connect an oscilloscope to test point "
8. Select Item No. "
Gain adjustment [Pc]
1. Enter the service mode.
2. Receive the 16-step grey scale computer signal with
3. Connect an oscilloscope to test point "
4. Select group no. "
5. Connect an oscilloscope to test point "
6. Select group no. "
7. Connect an oscilloscope to test point "
8. Select group no. "
-31-
computer1 [rGB]
mode.
260
group no. " ", item no. "
0 1
value from " " to " ". After the auto-calibration com-
pleted, "OK" will appear on the screen.
computer1 [rGB]
mode.
chassis ground (-).
0
", Item No. "
value to adjust the black level to be minimum.
chassis ground (-).
1
" and change data value to adjust the
black level to be minimum.
chassis ground (-).
2
" and change data value to adjust the
black level to be minimum.
computer1 [rGB]
mode.
chassis ground (-).
0
", item no. "
a
tude " " to be minimum by changing the Data value.
chassis ground (-).
0
", item no. "
a
tude " " to be minimum by changing the Data value.
chassis ground (-).
0
", item no. "
a
tude " " to be minimum by changing the Data value.
White Level
(a)
0
" and then change data
tP35G
" (+) and
0
" and change data
tP35r
" (+) and
tP35B
" (+) and
tP35G
" (+) and
3
" and adjust the ampli-
tP35r
" (+) and
4
" and adjust the ampli-
tP35B
" (+) and
5
" and adjust the ampli-