Epson ELPMB67 Installation Manual page 19

Installation Method
a
Loosen the bolts (2 points) shown below using the M8 wrench supplied
When installing the projector on a wall, loosen the bolts (4 points) shown below.
b
Raise and lower the back side of the projector to adjust the position of the image
c
When you have finished adjusting, re-tighten the loosened bolts (2 points)
When installing the projector on a wall, re-tighten the bolts (4 points) shown below.
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