Canon Service Tool V.3900 [verified] Download «Web»

: The tool’s most common use is resetting the waste ink counter to 0%, allowing the printer to bypass internal blocks that stop it from printing when it "thinks" the absorbers are full.

As the tool worked its magic, Emma explained to the IT staff that the Canon Service Tool V.3900 was designed to access and modify the printer's internal settings. This allowed her to bypass the error message and restore the printer to its factory settings. Canon Service Tool V.3900 Download

While holding , release Stop/Resume and press it 5 times (or 6 times for some MG series). : The tool’s most common use is resetting