Panasonic PT-DW740E Operating Instructions Manual page 36

Chapter 2 Getting Started — Removing/attaching the projection lens
3)
Attach the projection lens cover aligning the
marking (groove *1) with the tip of the arrow
on the projector (*2), and secure the projection
lens cover by turning it until groove *1 aligns
with the *3 P marking.
(ii)
Attention
f Turn the projection lens counterclockwise to confirm that it does not come out.
36 - ENGLISH
(i)
Projection lens cover