Never open the Canon printer’s cover while printing. It leads to the E03 error and damages the device’s internal units. And, if you have opened the cover, remove the paper, close the cover and press “OK”.
Now, try printing the documents without these Canon printer error codes. Is the Canon printer still showing an E03 error message? Press the “Stop” button to cancel the ongoing printing job. Then, check if there is any paper jammed inside the device.
Remove it from the paper output slot or rear tray. Reload the paper into the tray and tap on “OK”. It resumes the printing process and reprints the page that wasn’t printed for the paper jam.
Don’t turn off the printer after removing the paper. Because it removes the data that was previously sent to the printer.
Ensure to choose the right paper size and load the tray correctly. Use an A5 paper to print documents, images or graphical representations. But before that, consult with the technicians of the UAE Technician.