Error message says "memorry full" will not let us fax or scan for Konica Minolta 290MF

The FAX machine received some FAXes while it was without paper. Make sure the FAX has paper and try printing the stored faxes or check in the fax menu if they can be cleared without printing.
Another problem may be that the FAX received not faxes but voice messages, retrieve and delete the messages and the error should be gone.