Canon imageFORMULA ScanFront 220 Instructions Manual page 145

You can't choose TIFF when
Gray or Color is selected.
You can't choose JPEG when
Binary Mode is selected.
User is now operating the
device. Please try again after
the user completes operations.
An user has logged in.
Operation is invalid.
The scanner cannot be used with the selected mode and file format
Cause
combination.
Check which mode and file format combinations can be used.
Solution
p. 4-18 and p. 5-16.)
The scanner cannot be used with the selected mode and file format
Cause
combination.
Check which mode and file format combinations can be used.
Solution
p. 4-18 and p. 5-16.)
Cause The ScanFront is being used.
Solution Try again after the ScanFront has finished being used.
Cause Modifying settings is not possible because a user is logged in.
Solution Make the user log off and then try again.
8-8
Chapter 8 Troubleshooting
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(See