Canon / Canon PIXMA TS3520 Wireless All-in-One Printer
Canon PIXMA TS3520 Wireless All-in-One Printer error E03
Paper Jam / Rear Tray Obstruction
The printer detected that paper is jammed or rear feed sensor is obstructed.
Recommended solution
Turn off printer, open rear tray and front access door, pull jammed sheet gently straight out, then press Stop/Reset.