Dell S500 Projector - Manual (Page 31)

Adjusting the Projector Focus
1 Rotate the focus tab until the image is clear. The projector focuses at distances
ranging between 1.60 ft to 2.15 ft ± 0.02 ft (0.489 m to 0.655 m ± 0.6 mm).
1 Focus tab
Cleaning the Projector's Mirror Process
1 Turn off the projector power and disconnect the power cord.
2 Let the projector cool for at least 30 minutes.
3 Use air blower bulb to blow off dust on the mirror or gently wipe the
mirror by using a microfiber cleaning cloth. Do not scrub the surface of
the mirror. It may scratch the mirror.
CAUTION: Do not spray cleaners or solvents directly on the projector.
WARNING: Cleaning a wall-mounted projector can result in a fall or
injury. You can remove the projector from the wall-mounting bracket to
clean the projector's mirror.
Using Your Projector 31