Keystone Correction
Keystoning refers to the situation where the projected image is noticeably wider at either the top or bottom. It occurs when the projector is not perpendicular to the screen.
To correct this, besides adjust- ing the height of the projector, you will need to manually cor- rect it following one of these steps.
• Press the 
keystone up
or 
keystone down button on the remote
control or remote control to display the status bar labelled Keystone, then
press the 
keystone up
button to correct keystoning at the top of the image or press the 
keystone down button to correct keystoning at the bottom of the image.
•Press the menu button on the projector or remote control. Go to 
Picture > Keystone and adjust the values by pressing the 
left or 
right button.
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22 5. Operation