Canon printer error code 306 is a miscommunication issue between the printer and the system, and in order to fix this issue, you can either reset the system printer or set the printer to default. The steps for the same have been given below. You can either implement the measures on your own or contact Canon Printer Customer Support Phone Number for the same.
• Log in to Mac OS and click on the apple icon on the top right of the screen
• After that click on System Preferences and then go to Print and Fax
• Enter your password to unlock the padlock in case its locked
• Now remove the printer from the system by clicking on the – icon and then add it back again by clicking the + icon.


Read more: Canon Printer Helpline Number
Visit here: Canon Printer Technical Support