Power off the printer. Press and hold the STOP button, then press and hold the POWER button. Release the STOP button, then press it 5 times. Release the POWER button.
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The Canon Service Tool v.4906 is a software utility developed by Canon Inc. for servicing and resetting Canon printers. It's primarily used by authorized Canon service centers and technicians to diagnose and repair issues with Canon printers. Power off the printer
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