If the printer has been set to save received faxes on a computer, turn on the computer that is set to save the faxes. Once the faxes are saved in the computer, they are deleted from the printer's memory.
Even though the memory is full, you can send a monochrome fax by using the Direct Send feature. Or divide your originals into two or more to send them in several batches.
If the printer cannot print a received fax due to a printer error, such as a paper jam, the memory full error may occur. Solve the printer problem, and then contact the sender and ask them to send the fax again.