can remove a lens to replace it with a different lens.
off the projector and unplug its power cord before attaching or
removing a lens; otherwise you could receive an electric
Remove the lens only when necessary and
make sure the front of the projector is not facing up when you
remove the lens. This prevents dirt or dust from entering the
projector and lowering the projection quality. Avoid touching the
lens with your bare hands to prevent fingerprints on or damage to
the lens surface.