Epson PowerLite 450W User Manual page 104

note
Tighten the lamp cover
securely so you do not receive
a lamp cover error when you
turn the projector back on.
Maintaining the Projector
104
7. Tighten its screws, then press it in by the handle until it clicks
into place.
8. Replace the lamp cover, then tighten its screw.
9. Reset the lamp timer as described in the next section.