The Service Tool (originally known as General Tool) is a maintenance program designed for technicians to interface with Canon printers. The

: Service tools generally do not work over Wi-Fi; a direct USB cable is required. Enter Service Mode : Power off the printer. Hold the Stop/Resume (triangle) button. While holding Stop, press and hold the Power button.

unless the printer is manually put into "Service Mode" first. This usually involves a specific sequence of holding the Stop and Power buttons. Operating System Limits: