Software like Service Tool v4906 is typically intended for authorized technicians. Using it incorrectly can permanently disable your device or void your warranty.

This is the most common use for the software. When a printer's internal "waste ink" pads are full, the device will often lock itself to prevent leakage. The Service Tool allows technicians to reset the internal counter after the physical pads have been replaced. Hardware Diagnostics:

The v4906 version provides specialized tools for deep hardware maintenance:

The Canon Service Tool V4906 offers a range of features that make it an essential utility for Canon printer users. Some of the key features include:

Was the canon service tool taken down from the net? : r/printers