Feb 20, 2015  · cannot scan with Canon MG 2520 multifunction printer My Canon MG2520 printer works fine for printer but everytime I try to scan I am told that the printer is not detected and/or the printer is not plugged into the USB port. You can run into a problem aligning print heads on almost any inkjet printer or MFD. Fortunately. you will either need to crack the password, or…