You can check the status of the machine by the ON and Alarm lamps.

If the ON lamp is off, the power is off.

If the ON lamp lights green, the machine is ready to print.

If the ON lamp flashes green, the machine is getting ready to print, or printing is in progress, or the front cover is open.  Close the front cover.

If the Alarm lamp flashes orange, an error has occurred and the machine is not ready to print.

If the ON lamp flashes green and the Alarm lamp flashes orange alternately, an error that requires contacting the service center may have occurred.
For support and service options, sign into (or create) your Canon Account from the link below.
My Canon Account