: v3400 is generally suitable for older models (like iP, MG, and MP series). Newer printers often require higher versions like v4720 or v5204. How to Use the Service Tool (General Process)
The solution? — a powerful utility that gives technicians (and advanced users) direct access to the printer’s internal maintenance functions.
Canon does not officially distribute the Service Tool V3400 to the public. Using this tool voids your warranty. Moreover, resetting the waste ink counter without physically replacing the waste ink pads will eventually cause ink to leak inside your printer, possibly onto your desk or electronics.
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, which indicates the internal ink pads are "full" according to the printer's software. 1. Purpose and Core Functionality
