The tool will not detect your printer unless it is in Service Mode:
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The Service Tool is a proprietary software utility used by Canon technicians and advanced users to access the printer’s internal system settings. Unlike the standard printer driver, which controls how documents are printed, the Service Tool interacts with the printer’s firmware to manage hardware functions. It is the key to resolving issues that standard troubleshooting cannot fix. The tool will not detect your printer unless
Before you click any link, follow this safe methodology. Incorrect use can permanently damage your printer’s logic board. Proceed at your own risk. which controls how documents are printed