Epson PowerLite 713c Benutzerhandbuch

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If you’re using a computer cable longer than 6 feet, or an 
extension cable, the image quality may be reduced.

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Keep your computer and video cables separated from the power 
cord as much as possible to prevent interference.

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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 laptop 
computer and the projector, turn off the laptop’s LCD display.

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There may be dirt or smears on the lens. Clean the lens as 
described on page 52.

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Make sure the lens is fully extended.

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Adjust the focus using the focus ring.

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Make sure the lens is not fogged by condensation. You may need 
to wait before using the projector after moving it from a cold 
environment.

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Adjust the 

Sharpness 

setting on the Video menu (see page 41). 

When you change video settings, you should be able to see the 
effect on the screen immediately. If you’re projecting from a 
computer, you may also need to adjust the Tracking and Sync as 
described in the next section. If you don’t like the new settings, 
you can always select 

Reset 

to return to the factory default 

settings.