5100
Cause
Printer error has occurred.
What to Do
If you are printing, press the printer's Stop button to cancel printing, then turn off the printer.
Check the following:
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Make sure carriage motion is not impeded by protective material and tape for securing the carriage, jammed paper, etc.
Remove any impediment.
Important
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When clearing an impediment to print head holder motion, be careful not to touch clear film (A) or white belt (B).
If you soil or scratch these parts by touching them with paper or your hand, it could damage the printer.
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Turn the printer back on.
If this does not solve the problem, contact your nearest Canon service center to request a repair.