Acer P7500 - Manual (Page 22)

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Adjusting the Projected Image
Adjusting the Height of Projected Image
The projector is equipped with elevator feet for adjusting the height of image.
To raise/lower the image:
1 Raise the image to the desired height angle (Illustration #1), then pull out
the stand feet into position.
2 Use Tilt adjusting wheel (Illustration #2) to fine-tune the display angle.
3 Use Lens shift control rings to move the image to the ideal position. (refer
to page 17)
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2
Elevator feet
Tilt adjusting wheels