Introduction If you own a Canon Pixma printer—especially models from the MG series, MP series, or MX series—you may have encountered the dreaded "Service Mode" error, a flashing orange light, or the notorious "5B00" error code. These issues often indicate that your printer’s waste ink pad counter has reached its limit. The only consumer-accessible solution to reset this counter is a piece of software known as the Canon Service Tool (Model 6100) .