Canon CanoScan D660U User Manual page 60

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 using the film adapter unit
Solution: The connector cable for the film adapter unit is detached. Reconnect
the cable correctly. (Getting Started)
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: Calibration slot on the film guide is obstructed. Clear any items
blocking the calibration slot. (Getting Started)
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.
Problem: Scanning quality is poor
Solution 1: Resolution is too low. Raise it and rescan.
Solution 2: Original is floating off the document glass (platen). Place the original
correctly on the document glass.
Solution 3: Document glass or underside of the document cover is dirty. Clean
them.
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