The is a specialized utility designed for maintenance and troubleshooting of Canon Pixma and Maxify printers, specifically for resetting "waste ink pad" (absorber) counters. Summary of Canon Service Tool V5204 Primary Use

The tool cannot interact with a printer in its standard operating state. The device must first be manually put into through a specific sequence of button presses:

Searching for free downloads of service tools carries significant risks. Because official Canon service software is proprietary and strictly distributed to authorized repair centers, online versions are often altered.

: Canon does not officially distribute or support this tool for consumers; it is intended for authorized service centers. Features and Compatibility