Canon MB2100 SERIES Online Manual page 1215

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Cause
Possible causes include the following.
• An error occurred during copying and some time elapsed.
• Document is remained in ADF.
• An error occurred during scanning and the document is remained in ADF.
What to Do
Take the corresponding actions below.
• When you copy, press the printer's OK button and retry copying.
• When the document is remained in the ADF, press the printer's OK button to feed out the document.
• When you scan, press the Stop button to cancel the scanning, and try to scan again.
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