Sanyo PLC-WXE46A Service Manual page 30

Electrical Adjustments
2 .Center Voltage Adjustment
1. Enter the service mode.
101
. Select group no. " ", item no. "
just the voltage of tP_VMIdG to be
±0.01V
.
3 .Black-Black Voltage Adjustment
1. Enter the service mode.
. Receive the 16-step grey scale computer signal
Computer 1 [RGB]
with
101
3. Select group no. " ", item no. "
the voltage of tP_VERFR to make the voltage
10.00 ±0.05V
to be .
101
4. Select group no. " ", item no. "
the voltage of tP_VERFG to make thevoltage
10.00 ±0.05V
to be .
101
5. Select group no. " ", item no. "
the voltage of tP_VERFB to make the voltage
10.00 ±0.05V
to be .
4. Panel Type Check and Setting
* Before setting, you need to check which type of LCD pan-
el 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.
. Panel Type Check
290
Select group no. " ", item no. "
value as follows;
Data value: 0 For L-Type of LCD Panel
Data value: 0 For R-Type of LCD panel
3. Panel Type Setting
290
Select group no. " ", item no. "
value from 10 to 0 or 0 depending on your LCD Panel
type. When the data value reaches 0 or 0, it returns
to 10 quickly. The gamma-characteristics changes ac-
cording to your selection.
12
" to ad-
7.50
mode.
13
" to adjust
14
" to adjust
15
" to adjust
0
". Check the data
1
" and change data
5. Auto Calibration adjustment [PC]
1. Enter the service mode.
. Receive the 16-step grey scale computer signal with
Computer1 [RGB]
3. To start the auto-calibration for PC adjustment, select
260
group no. " ", item no. "
0
value from " " to "
pleted, "OK" will appear on the screen.
Below adjustments are performed when the above auto
calibration is failed.
Pedestal adjustment [PC]
1. Enter the service mode.
. Receive the 16-step grey scale computer signal with
Computer1 [RGB]
3. Connect an oscilloscope to test point "
chassis ground (-).
0
4. Select group no. "
ue to adjust the pedestal level and black level to be the
same level.
5. Connect an oscilloscope to test point "
chassis ground (-).
1
6. Select item no. " " and change data value to adjust the
pedestal level and black level to be the same level.
7. Connect an oscilloscope to test point "
chassis ground (-).
2
8. Select item no. " " and change data value to adjust the
pedestal level and black level to be the same level.
Gain adjustment [PC]
1. Enter the service mode.
. Receive the 16-step grey scale computer signal with
Computer1 [RGB]
3. Connect an oscilloscope to test point "
chassis ground (-).
0
4. Select group no. "
a
tude " " to be minimum by changing the Data value.
5. Connect an oscilloscope to test point "
chassis ground (-).
-30-
mode.
0
" and then change data
1
". After the auto-calibration com-
mode.
tP35G
0
", item no. " " and change data val-
tP35R
tP35B
mode.
tP35G
3
", item no. " " and adjust the ampli-
tP35R
" (+) and
" (+) and
" (+) and
" (+) and
" (+) and