Panasonic PT-VX500U Service Manual page 43

Electrical Adjustments
6. Common center adjustment
Input mode Computer 1 (RGB)
Input signal XGA computer signal
Signal patterns 50% R, G, B whole signals
1. Enter the service mode
100
2. Select Group " ", No. "
0
value to " " to reduce the panel frequency.
3. Change data value to obtain the minimum flicker for
each color on the screen.
Group - No. Adjustment
101 - 7 for green flicker
101 - 6 for red flicker
101 - 8 for blue flicker
4. Select Group " 100 ", No. "
2
value to " " to reset the panel frequency.
7. Gamma correction adjustment
Software PROJECTOR SERVICE TOOL v4.20
Use the software to obtain the proper gray scale of the
screen. See the further information of the software in-
struction manual.
8. Color shading correction adjustment
Software PROJECTOR SERVICE TOOL v4.20
Signal pattern 12%, 25%, 50%, 75% whole gray
Use the software to correct the color shading of the
screen. See the further information of the software in-
struction manual.
The color shading correction adjustment for this model
should be performed with the whole-gray patterns speci-
fied as above.
Corresponding to the pull-down menu of the gray level
selector on the software.
Level 0 : 12%
Level 384 : 25%
Level 640 : 50%
Level 1032 : 75%
Relation of level (%) indication and signal pattern
0% : Black
100% : White
77
" and change the data
77 " and change the data
9. Keystone offset adjustment
Input signal
1. Put the projector on a horizontal place with the
adjustable feet being minimum range and then enter
the service mode.
102
2. Select Group "
0 5
from " " to " ".
3. By pressing the
Offset adjustment will start.
4. When it has completed, the "OK" message will
appear on the screen.
5. By pressing any button on the projector or the
remote control, the "OK" message will disappear.
(Data value of Group "
" 0 " for initial value.)
-43-
no signal
3
", No. " " and set data value
SELECT
button, the Keystone
102 3
", No. " " will be back to