Xerox DocuCentre SC2020 User Manual page 277

Symptoms
The scanner does not work.
The device scans very slowly.
Remedy
Ensure that you place the document to be scanned facing
down from the document glass, or facing up in the
document feeder.
There may not be enough available memory to hold the
document you want to scan. Try the Preview function to see
if that works. Try lowering the scan resolution rate.
Check that the USB cable or Ethernet cable is connected
properly.
Ensure that the USB cable or Ethernet cable is not
defective. Switch the cable or adapter with a known good
cable or adapter. If necessary, replace it.
Check that the scanner is configured correctly. Check the
application you want to use to make certain that the
scanner job is being sent to the correct port.
Ensure that the scanner sharing feature is disabled when
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you use Mac OS X before you scan documents via an ICA
compatible application such as Image Capture. The device
does not support the scanner sharing feature of Mac OS X.
Select a printer which is directly connected to the computer
via USB or wired LAN and scan documents.
Graphics are scanned more slowly than text when you use
the Email or Scan To Network feature.
Communication speed becomes slow in scan mode because
of the large amount of memory required to analyze and
reproduce the scanned image.
Scanning images at a high resolution takes more time than
scanning at a low resolution.
Problem Solving
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Xerox DocuCentre SC2020
User Guide
274