You can set up or install your projector in the
following ways:
Wherever you set up the projector, make sure to
position it squarely in front of the center of the screen, not at
an angle, if possible.
If the projector cannot be
centered in front of the screen, use lens shift to reposition the
image instead of using keystone correction for better image
quality.
Note: If you use the projector tilted at an
angle of more than three degrees, it could be damaged and cause an
accident.

If you project from the ceiling or from the rear, be
sure to select the correct Projection setting in the projector's
Installation menu. If necessary, enable the
Inv Direction Button setting in
the projector's Operation menu.