Epson EMP-5500 Owner's Manual page 78

6. Gently insert the new lamp by lowering it into position.
Make sure it is inserted securely.
7. Tighten the screws you loosened in step 4.
8. Replace the lamp cover and tighten the cover screw.
(Make sure the lamp cover is securely fastened. The
projector will not run if the lamp cover is open.)
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