Do you have a question about the 3M 2770 and is the answer not in the manual?
Lift the projector head using the handle while securing the base.
Plug in the power cord and activate the projector using the power switch.
Adjust the mirror to correctly position the projected image on the screen.
Use the lever on the varifocal lens to achieve a sharp projected image.
Pull down the handle to fold the projector head, anchoring the base.
Replace the cover, store the power cord, and ensure latches are locked.
Turn off the projector, unplug it, and let it cool. Note lamp changer features.
Open compartment, release old lamp, insert new lamp, close cover securely.
Use a camel hair brush to clean the front surface mirror.
Clean projection and base lenses with 3M cleaner and a soft cloth.