Epson ELPMB29 Guide De L'utilisateur page 10

(3) Align one side of the U-shaped arch on the base frame unit (
and the supposed central line of the screen during projection (
figure) to align the center of the lens and the center of the screen.
d
Mount the base frame unit by tightening the three adjuster bolts
Fix the adjuster bolts on a flat surface on the bottom side of the tabletop temporarily. Move the
adjuster bolts forward or backward if there are any obstacles such as a shaft.
10
in the following figure)
in the following
U-shaped arch
Center of the screen
Table
Projection range
Each adjuster bolt requires a flat
surface with at least 60 mm (2.4") in
diameter.