Canon Service: Tool V.4718 ((link))

Since this is not an official download, you need to be cautious. Many websites bundle malware, adware, or trojans with the tool.

The tool allows technicians to access internal settings not available in the standard user menu: canon service tool v.4718

The power light will blink and then stay steady, indicating you are in Service Mode. You can then run the v.4718 executable on a Windows PC connected via Important Precautions Since this is not an official download, you

: Verifies if the print head is firing correctly across all colors. canon service tool v.4718

Disclaimer: Using this tool voids your manufacturer warranty. This guide is for educational purposes only. Proceed at your own risk.