Sanyo PLV-WF20, Service Manual

Page: 68 / 238

-68-
Electrical Adjustment
12. Filter calibration
1. Enter the service mode, select Group “
170
”, No. “
0
”.
. To start the adjustment, change data value from “
0
”
to “
1
”. After the auto-calibration completed, "OK" will
appear on the screen.
[IMPORTANT]
Before taking this adjustment, you need to take the fol-
lowing adjustment procedures.
1. Replace the air filter cartridge with new one or scroll
up the air filter.
. Remove the Light block plate upper and lower.
-1. Remove the cabinet front ring.
-. Remove the cabinet front cover-A.
-3. Remove the Light block plate upper.
-4. Remove the Projection lens and Safety clamp.
-5. Remove the Light block plate lower.
-6. Mount the Projection lens, Cabinet front cover-A
and Cabinet front ring.
3. Perform the Filter calibration as described the above.
4. After completing the calibration, install the Light block
plate upper and lower onto the original position.
See item "Lens Mounting" for further information.
Cabinet front cover-A
Cabinet front ring
Light block
plate upper
Light block
plate lower
ProJector SerVIce tooL Ver. 4.10
Service Parts No. 610 337 8787
11. Read/Write of gamma data
When replacing the main board, take read/write proce-
dure of the gamma adjustment data and color shading
correction data.
The “gamma adjustment data” and “color shading cor-
rection data” of each panel have been adjusted precisely
at the factory to match the characteristics of each panel.
When you replace the main board, you need to read out
the "gamma adjustment data" and "color shading correc-
tion data" stored in the memory IC on the previous main
board and write down them into the memory IC on the
new main board. By this way, the projector is enabled to
reproduce the picture which has the properly adjusted
gamma characteristic and color shading correction.
Use "Projector Service Tool" software for Read/Write of
the gamma adjustment data and color shading correc-
tion data.
The Projector Service Tool can be ordered with following
service code.
11. White balance adjustment
1. Enter the service mode. (Input signal is not required.)
. Select Group and No. of white balance adjustment
items referring to the table below. For example, when
adjusting the white balance in the Standard PC mode,
select Group - No. "98 - 4 (X value)" or "98 - 8 (Y
value)".
3. Change the Data value.
4. Select Group "
982 ", No. " 24 ". When the data value
is changed " 0 " to " 10 ", the adjustment is performed
automatically. This adjustment takes in a few seconds
and the displayed adjustment Group -No. changes to
"930 - 0".
5. Check proper white balance and gray scale are ob-
tained in the selected input mode.
i
This white balance adjustment can be done in each
lamp mode of " lamps", "Lamp 1" and "Lamp ".
Group-No. Input Adjustment Mode (X, Y) data (Initial value)
982 - 4 PC Standard - X 310
982 - 5 PC Real - X 330
982 - 6 AV Standard - X 310
982 - 7 AV Cinema - X 330
982 - 8 PC Standard - Y 330
982 - 9 PC Real -Y 350
982 - 10 AV Standard - Y 330
982 - 11 AV Cinema -Y 350