Acer X1311WH - Manual (Page 20)

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Adjusting the Projected Image
Adjusting the Height of the Projected Image
The projector is equipped with an elevator foot for adjusting the image height.
To raise the image:
1 Press the elevator button.
2 Raise the image to the desired height angle, then release the button
to lock the elevator foot into position.
3 Use Tilt adjusting wheel to fine-tune the display angle.
To lower the image:
1 Press the elevator button.
2 Lower the image to the desired height angle, then release the button
to lock the elevator foot into position.
3 Use Tilt adjusting wheel to fine-tune the display angle.
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Tilt adjusting wheel
Elevator
button
Elevator foot