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26 Solving Problems
Image Quality Problems
The image is out of focus
■ The document camera needs hard edges or sharp lines in the image to be able
to focus properly. If the image has only soft edges, try placing a different
document under the camera lens while adjusting the focus.
■ Make sure the lens is at least 2 inches (5 cm) away from the object you’re
viewing.
■ If you’re using a projector to display the image, check its focus.
■ Make sure the document camera lens isn’t dirty. Use a canister of compressed
air to remove dust. To remove dirt or smears, use lens-cleaning tissue. If
necessary, moisten a soft cloth with lens cleaner and gently wipe the lens.
Caution:
Be careful not to scratch the lens. Never rub the lens with abrasive materials.
The image brightness or color isn’t correct
■ To illuminate your document, press the lamp button on the side of the camera
head.
■ Use the Brightness button on the control panel to increase or decrease image
brightness.
■ Set the White Balance setting to Auto to adjust the color automatically (see
page 17). If the color is still not correct, choose the setting for the type of
lighting you’re presenting under (
Fluorescent or Incandescent).
The image is stretched or of poor quality
■ If the image appears stretched while using the document camera’s S-video
port, press and hold the P
Power button for 1 second to turn off the
document camera. Then press the P
Power button again to turn it back on.
This resets the system and corrects the image.
■ For best results, use the 6-foot VGA cable included with the document
camera. If you use a longer cable, the image quality may be reduced, especially
if your computer is set to a higher resolution such as SXGA+ or UXGA. If
necessary, set your computer to a lower resolution, or use a distribution
amplifier to reach a greater distance; you can purchase one from Epson (see
page 28).