? This usually means the "waste ink absorber" is full. While the hardware might need a physical cleaning, you can often get back to printing by resetting the internal counter using the Canon Service Tool V5306 What is Canon Service Tool V5306?
: The version of Service Tool you are using does not support your specific printer model. service tool v5306 free download new
Search for reputable printer technician forums or dedicated "resetter" archives. Ensure the file is in a .zip or .rar format. service tool v5306 free download new