Canon Service Tool V4720 Download Verified 'link' -

: Includes nozzle checks and deep cleaning routines to maintain hardware health. How to Use the Service Tool Safely

: The tool only works when the printer is connected to a computer via a USB cable ; it will not function over Wi-Fi or LAN. Run the Utility : Launch the ServiceTool.exe . canon service tool v4720 download verified

Release both buttons. The power light should blink and then remain steady, indicating the device is in Service Mode. : Includes nozzle checks and deep cleaning routines