Canon 4.1 User Manual page 63

Problem: No free disk space message displays when you start a scan
Solution: Since there is insufficient free space on your hard drive, clear non-
essential files to create more space.
Problem: Scanning is taking a long time
Solution: Resolution is set too high. Lower the resolution to the minimum
required settings and rescan.
Problem: Can't scan with the film adapter unit
Solution: Set the film guide correctly on the document glass (platen). See the
user guide for the film adapter unit.
Problem: Colors in the Preview area are strange
Solution 1: The original is faded. Try retouching the colors with an image editing
program. (image editing program manual)
Solution 2: Color balance and brightness are incorrectly set. Reset them.
Solution 3: The fluorescent lamp inside the scanner is not sufficiently warmed.
Please wait for a minute or two, then perform a preview scan again.
Solution 4: Calibration slot on the film guide is obstructed. Clear any items or
dust blocking the calibration slot. See the user guide for the film
adapter unit.
Problem: Entire image is whited out (or blackened) when the image
type is set to black and white
Solution: The threshold value is set too low (or high). Increase (decrease) the
threshold value.
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