V.4718 cannot communicate with a printer in "User Mode." To enter Service Mode:
Enables specific service functions like clearing the print head or cleaning, and resetting the logic board. Supported Canon Printer Models canon service tool v.4718
Initiates a powerful ink-flushing cycle to clear stubborn nozzle clogs that standard driver cleanings cannot fix. canon service tool v.4718
Unplug the power cord from the back of the printer for 10 seconds. canon service tool v.4718