HP XP8010, XP8020 Reference Guide

To aim the projector

To aim the projector

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Reference Guide
Adjustments
To aim the projector
To raise the projected picture on the screen, raise and hold the height adjustment 
lever while lifting the front of the projector to the desired display angle, then 
release the lever to lock the foot.
To lower the projected picture, raise and hold the height adjustment lever while 
pressing down on the front of the projector, then release the lever to lock the foot.
To level the projected picture, turn the two back feet to screw in or out. All four 
feet are adjustable in this way.