The Canon Service Tool will not detect your printer during normal operation. You must manually boot the printer into "Service Mode" using a precise sequence of button presses.
Canon Service Tool V5306 is a maintenance software used to manage printer errors, specifically for resetting the "Waste Ink Absorber Full" error (Support Codes like Key Features & Compatibility Primary Function Canon Service Tool 5306 Download
In the section, ensure "Main" is selected. The Canon Service Tool will not detect your