Canon DR-2580C - Manual (Page 96)

92 Appendices
Symptoms Lines, smudges, or dirt appear on the scanned image.
Problem The scanning glass or rollers inside the scanner are dirty.
Solution Clean the scanning glass and rollers.
If lines still appear on the image even after cleaning the scanning
glass and rollers, the scanning glass inside the scanner may be
scratched. Contact your local authorized Canon dealer or service
representative. (See p. 70.)
Symptoms The scanned image is abnormal for certain documents.
Problem
Functions such as [Auto-detection], [Deskew], or [Border
Removal] were used when scanning documents containing
text or photos up to their edges. (The scanner cannot
accurately process the edges of documents.)
Solution Turn off functions such as [Auto-detection], [Deskew], or [Border
Removal] when scanning documents containing text or photos up
to their edges. (See “Software Settings,” on p. 61.)
Symptoms The scanned image is abnormal in some applications.
Problem
A function not supported by the application was used.
Solution Some applications do not support functions such as auto-detection
of the paper size. Scanning documents with an application such as
this will result in an abnormal scanned image. Try scanning with
auto-detection of the paper size set to “off.”
The Flatbed Scanner (Option) Does Not Work
Operational failure of the optional flatbed scanner unit can be caused by any of
the reasons described below. Try the solution according to the problem.
Problem The ISIS/TWAIN scanner is set to something other than
Flatbed.
Solution Set the ISIS/TWAIN driver to [Flatbed]. Refer to Help for the
ISIS/TWAIN Driver for information about the ISIS/TWAIN
Driver settings.
Problem The interface connector is not connected.
Solution Check the connections between the DR-2580C and the flatbed
scanner unit.
Problem The DR-2580C is not installed correctly.
Solution Check the document size, thickness, and paper type. Remove the
DR-2580C scanner and then reinstall it correctly.