Epson EB-585Wi Guide D'installation page 41

d
Open the air filter cover, and then adjust the focus using the focus lever
After you finish making adjustments, close the air filter cover.
e
Loosen the M4 screw (x1) with the hexagon wrench, and then adjust the horizontal roll
with the adjustment dial
c
Repeat steps 5 to 10 as necessary.
After you finish making adjustments, tighten the M4 screw that you loosened.
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Installation Guide