Epson PowerLite 720c User Manual page 17

If you place the projector below the level of the screen, you'll have to
tilt it up by extending the feet as shown. Tilting the projector upward
causes the image to lose its rectangular shape, but the Auto Keystone
feature corrects the distortion automatically. If the image does not
regain its rectangular shape, the Auto Keystone feature may have been
disabled. To turn it on or for more information on keystone
correction refer to the next chapter.
If you place the projector level with the bottom of the screen, the
image will be rectangular and you won't have to adjust it. If you place
the projector higher than the bottom of the screen, the image will still
be rectangular, but you won't be able to fill the whole screen with the
image.
note
After positioning the
projector, you may want to
connect a Kensington
MicroSaver anti-theft device
to the lock port on the
projector's left side. You can
purchase this from EPSON;
.
see page 7
Setting Up the Projector
11