Connect the printer via USB and run the Service Tool V5306 executable.
Includes various PIXMA G-series (e.g., G1000, G2000, G3000), MB-series (e.g., MB2000, MB2100), and iP-series (e.g., iP7200, iP8700). canon service tool v5306
It generally does not work with "disposable" or entry-level models like the E400, MG24xx, or MG25xx series. Connect the printer via USB and run the