Unplug the printer's power cord. If your printer supports faxing and you disconnect the power plug, all the faxes stored in the machine's memory will be erased. Unfortunately, service is required.
Automatic Redialing While automatic redialing, the unsent fax is stored in the printer's memory temporarily until the sending fax is complete. If a power failure occurs or you unplug the power cord before automatic redialing is complete, all faxes stored in the printer's memory are deleted and not sent.
If your product issue was not resolved after following the steps above, or if you require additional help , please create or log in to your Canon Account to see your technical support options.