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Service Mode
7-6
Dynamic Astigmatism (Spot Shape Adjustment)
The spot shape adjustments correct the spot shape in 8 different
areas on the screen and for the three colors separately. The spot
shape is adjusted according to the axial axises and the diagonal
axises when using the arrow keys on the RCU.
These adjustments have to be done on a dot pattern (e.g. the internally
generated pattern) with standard line frequency (15 kHz). The adjust-
ment values are stored in the EEPROM and remain the same for all
frequencies.
Follow this procedure:
Highlight
'Dynamic Astigmatism'
by pushing the joy disk up or down
and press ENTER to select. EXIT returns to the Path Selection Main
Menu.
Select the source type (selected source or genlock pattern) by
highlighting the color for which the spot shape has to be corrected and
press ENTER. (e.g. when selecting RED under
'On Genlocked
Pattern'
, the projector switches to a genlocked pattern.)
Press ENTER to continue adjustment.
Increase the contrast level using the Contrast Control to near maxi-
mum. Using the "+" Sharpness Key, defocus the image until the dots
are large and easily visible. Press ENTER to continue to SEL.
Select with or
then <ENTER>
<EXIT> to return.
SERVICE MODE
IDENTIFICATION
COPY A BLOCK
DELETE A BLOCK
DELETE ALL BLOCKS
CHANGE PASSWORD
CHANGE LANGUAGE
RUN TIME
SET TO MIDPOSITION
CONVERGENCE MID
DYNAMIC ASTIGMATISM
MORE...
DYNAMIC ASTIGMATISM
ON SELECTED SOURCE
RED
GREEN
BLUE
ON GENLOCKED PATTERN
RED
GREEN
BLUE
Select pattern or color
with or
then <ENTER>
<EXIT> to return
SEL: select the adjustment area on the screen where the spot shape
DYNAMIC ASTIGMATISM
First adjust the defocusing
of the image.
SEL : select area using arrow
keys
ADJ : adjust axial astigmatism
using
or , diagonal
astigmatism using
or
Toggle between SEL and ADJ
with <ENTER>
<ENTER> to continue
<EXIT> to return
has to be corrected. Use the arrow keys to select one of the 8 areas.
Press ENTER to continue to ADJ.
ADJ: adjust the spot shape in the axial or diagonal direction when
using the arrow keys for the selected area. Adjust until the spot shape
is circular.
Use the up and down arrow keys for the diagonal astigmatism
adjustment and the left and right arrow keys for the axial astigmatism
adjustment. Press ENTER to continue selecting a new area. The
adjustment direction (axial or diagonal) and adjustment value are
given in a text box on the screen. When all areas are adjusted, press
EXIT to return to the Service Main Menu.
1
2
3
45
67
8
Diagonal
astigmatism correction
(use the and
arrow key)
Spot shapes
before dynamic
astigmatism correction
Axial
astigmatism correction
(use the and
arrow key)
Spot shapes
after dynmic
astigmatism correction