Sanyo PLC-WK2500, 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
4.5 ±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
13.8+0V/-
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
4.5 ±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
13.8+0V/-
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
4.5 ±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
13.8+0V/-
0.15V
.
2. Fan Control adjustment
* Before setting, you need to check which type of LCD
panel is placed on the projector according to the item
"LCD Panel/Prism Ass'y removal" in the chapter "Optical
Parts Disassembly".
1. Enter the service mode.
2. Panel Type Check
Select Group No. “
290
”, Item No. “
0
”. Check the
data value as follows;
Data value: 0 For L-Type of LCD Panel
Data value: 20 For R-Type of LCD panel
3. Panel Type Setting
Select Group No. “
290
”, Item No. “
1
” and change
data value from 10 to 0 or 20 depending on your
LCD Panel type. When the data value reaches 0 or
20, it returns to 10 quickly. The gamma-characteris-
tics changes according to your selection.
1. Panel type Check and Setting
Note:
Be careful to take this adjustment. The value of
gamma adjustment data will be reset and cannot be
restored if you change the mode of LCD panel type.
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 pedestal level and black level to be
the same level.
5. Connect an oscilloscope to test point “
tP35r
” (+)
and chassis ground (-).
6. Select Item No. “
1
” and change data value to adjust
the pedestal level and black level to be the same lev-
el.
7. Connect an oscilloscope to test point “
tP35B
” (+) and
chassis ground (-).
8. Select Item No. “
2
” and change data value to adjust
the pedestal level and black level to be the same lev-
el.
P
edestal Lebel
Blac
k Lebel
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.
3. Auto Calibration adjustment [PC]
Below adjustments are performed when the above
auto calibration is failed.