Epson ELPLX02S User Manual page 7

Make sure the lens unit is not at an angle, and
D
insert it straight into the lens insertion section.
While holding the lens unit firmly, hold the lock
E
lever and turn it clockwise to lock the lens unit.
Check that the lens cannot be detached.
If it cannot be locked, the lens unit is at an angle.
Remove and then reinstall the lens unit.
Tighten the screws (4 points) to fix the lens unit.
F
Turn the screws by hand.
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