140 Solving Problems
■ You also may need to modify existing presentation files if you
created them for a different resolution. See your software
documentation for specific information.
■ If you’re projecting a wide panel computer image, adjust the
Resolution setting (see page 98).
■ If you’re projecting an image from a computer with dual display
activated, turn dual display off.
The image isn’t square, but keystone-shaped.
If the image isn’t square or rectangular, adjust its shape as described on
page 47.
The image contains static or noise.
■ If you’re using a computer cable longer than 6 feet (1.8 meters),
or an extension cable, the image quality may be reduced.
■ Keep your computer and video cables away from the power cord
as much as possible to prevent interference.
■ The video signal may be split between the computer and the
projector. If you notice a decline in the projected image quality
when the image is displayed simultaneously on your notebook
computer and the projector, turn off the notebook’s LCD display.
■ Make sure the correct input signal is selected in the Signal menu
(see page 99).
■ If you’ve used the Quick Corner or Keystone adjustment, you
may need to decrease the
Sharpness setting in the Image menu
(see page 97).
■ If you’re projecting from a computer, make sure its signal is
compatible with the projector. See page 159.
The image is blurry.
■ There may be dirt or smears on the lens. Clean the lens as
described on page 122.
■ Adjust the focus using the focus ring (see page 46).
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