NEC PA1004UL-W User Manual page 228

2. Remove the lens cap on the back of the lens.
NOTE:
• Make sure to remove the lens cap at the unit back side. If
the lens unit with the lens cap remaining on is installed
on the projector, it may cause of malfunction.
3. Insert the lens onto the projector facing the
arrow on the lens-label upward.
Insert the lens slowly all the way in.
4. Turn the lens clockwise.
Turn until a click is heard.
The lens is now fastened onto the projector.
Arrow
204
8. Appendix
Guiding notch
Protrusion