Sanyo PLC-WXU30 Service Manual page 28

Electrical Adjustments
x 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. "
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. "
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.
c Auto Calibration adjustment [PC]
1. Enter the service mode.
. Receive the 16-step grey scale computer signal with
computer2 [rGB]
mode.
3. To start the auto-calibration for PC adjustment, select
260
group no. " ", item no. "
0 1
value from " " to " ". After the auto-calibration com-
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
computer2 [rGB]
mode.
3. Connect an oscilloscope to test point "
chassis ground (-).
0
4. Select group no. " ", item no. "
value 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.
0
", item no. " ". Check the data
1
", item no. " " and change data
0
" and then change data
tP_G1
" (+) and
0
" and change data
tP_r1
" (+) and
tP_B1
" (+) and
Gain adjustment [Pc]
1. Enter the service mode.
. Receive the 16-step grey scale computer signal with
computer2 [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 (-).
0
6. Select group no. "
a
tude " " to be minimum by changing the Data value.
7. Connect an oscilloscope to test point "
chassis ground (-).
0
8. Select group no. "
a
tude " " to be minimum by changing the Data value.
(a)
v Auto Calibration adjustment [Component]
1. Enter the service mode.
. Receive the 8 color 100% color bar 480i-component
computer2 [component]
signal with
3. To start the auto-calibration for Component adjust-
ment, select group no. "
change data value from "
bration completed, "OK" will appear on the screen.
Below adjustments are performed when the above auto
calibration is failed.
Pedestal adjustment [component]
1. Enter the service mode.
. Receive the 16-step grey scale 480i-component sig-
computer2 [component]
nal with
3. Connect an oscilloscope to test point "
and chassis ground (-).
4. Select group no. "
value 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.
-8-
mode.
tP_G1
3
", item no. " " and adjust the ampli-
tP_r1
4
", item no. " " and adjust the ampli-
tP_B1
5
", item no. " " and adjust the ampli-
White Level
mode.
260 0
", item no. " " and then
0 1
" to " ". After the auto-cali-
mode.
tP_G1
0 0
", item no. " " and change data
tP_r1
tP_B1
" (+) and
" (+) and
" (+) and
" (+)
" (+) and
" (+) and