Canon MAXIFY MB2750 Online Manual page 1300

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Cause
Printer error has occurred.
What to Do
Turn off the printer and unplug it.
Plug in the printer again and turn it back on.
If this does not solve the problem, contact your nearest Canon service center to request a repair.
Important
• If you unplug, all the faxes stored in the printer's memory are deleted.
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