If you reset your counter without replacing the pads or installing an external waste ink bottle mod, excess ink will eventually leak out of the bottom of your printer, ruining your desk, floors, or the internal circuitry of the machine. Always clean or replace the pads after a software reset.
Allows you to read, dump, and clear the printer’s non-volatile memory data.
Still holding the Power button, press the button 5 times (or 6 times depending on your exact model). The indicator light will alternate between green and orange with each press. Release the Power button. Canon Service Tool V.3900 Download
The Canon Service Tool is a specialized utility for performing low-level maintenance on Canon printers. While the official Canon IJ Printer Assistant Tool is for routine maintenance like nozzle checks and head cleaning, the Service Tool is a more powerful piece of software intended for advanced repairs.
The utility is built exclusively for Windows environments (Windows 7, 8, 10, and 11). It will not run natively on macOS or Linux. Step-by-Step: How to Use V.3900 to Reset Your Printer If you reset your counter without replacing the
Wait a moment; the Power LED will flash and then stay lit, indicating the printer is now in Service Mode and ready for the software command.
This article provides a complete, detailed breakdown of what the Canon Service Tool V.3900 is, why you might need it, how to download it safely, and a step-by-step guide to using it without damaging your printer. Still holding the Power button, press the button
The Service Tool includes several buttons designed for different diagnostic and maintenance tasks:
The primary reason users download V.3900 is to bypass hardware lockouts that occur when a printer's internal waste ink pads are technically full.