You should replace the printhead for any of the following situations: If the printing quality does not improve even after one or two cycles of Head Cleaning B from the printer menu If the Display Screen indicates "Open top cover and replace the printhead."
For example, in Windows 7, open the Devices and Printers window from the start menu and doubleclick the printer icon. 2 .Right-click the job to cancel and select Cancel. NOTE
To solve the problems above, you will need to update your OS to 10.12.1 or higher. 2 . Using the latest version of the Canon software. If you are using the older version of the Canon software, the following phenomena may appear: