To use the tool, your printer must first be in . A common method for many Canon PIXMA models is as follows:
: Ensure the printer is connected to your PC via USB (Wi-Fi will not work) and turned off. Enter Service Mode : Press and hold the Stop/Reset button. While holding it, press and hold the Power button. Release the Stop button but keep holding the Power button. To use the tool, your printer must first be in
: Open the Service Tool application on your Windows PC. To use the tool
Release the button. If the light stays steady green, the printer is in Service Mode. the printer is in Service Mode.