HP xp7010/xp7030 - Manual (Page 31)

Adjusting the picture and sound 31
Adjusting a slanted picture
If the projector is tilted up or down, the sides of the picture on the screen might slant in or out,
even though the top and bottom are level. The keystone adjustment corrects this problem.
Adjust the picture using the keystone setting in the on-screen menu. Press enter, go to Setup >
Keystone, and adjust until the picture looks correct.
TIP: If the projector is not perpendicular to the screen, the projected image may slant left or
right. If this happens, turn the projector until the image is rectangular, with straight corners.