
A. Entering into service mode
Turn off the printer off is the printer power on. And remove the printer USB cable from your computer..
While the printer is OFF, press and hold the Start/Stop button on the some other canon printers model press Resume/Cancel button.
While still holding Start/Stop button or Resume/Cancel button, press and hold the POWER button.
When the POWER LED (green light) lit, release the Start/Stop or resume/cancel button (still holding the POWER button).
Still holding the power button,...