Canon Service Tool 4905

Note: Newer models (those released post-2018) or printers with updated firmware may require different tools (such as the "Reset Key" service or newer revisions of the tool) as Canon frequently updates encryption protocols.

The Canon Service Tool v4905 is a proprietary utility software used for the maintenance, diagnosis, and repair of Canon inkjet printers. This paper outlines the capabilities of the software, specifically focusing on its primary functions: Waste Ink Counter reset, Printhead cleaning/alignment, and EEPROM resetting. It further discusses compatibility requirements, the operational procedure for "Service Mode," and the critical safety considerations necessary to prevent hardware damage during the maintenance process. canon service tool 4905