Depending on how you positioned the projector, you
may need to change the projection mode so your images project
(default setting) lets you project from a table in front of the
screen or onto the ceiling.
Down flips the image over top-to-bottom to project
upside-down from a ceiling or wall mount.
flips the image horizontally to project from behind a translucent
Down flips the image over top-to-bottom and horizontally to
project from the ceiling and behind a translucent screen.