I'm sorry. To confirm, you are able to set the Paper Size to A3 on both the computer's screen and the printer's screen.
; (Also, make sure the Paper Source / Tray is correct when printing from the computer.)
- Can you turn off the printer, then disconnect the power cord from the printer for a few minutes, then re-connect, and check?
- If needed, can you go to Settings, then All Settings, and see if there is any option to reset to factory / defaults (but do not reset the network option.)
- Do you have Windows XP, Vista, or 7, or 8 or 10, or Mac computer?
- Is the document you are printing set up with A3 size? Or is it in A4 or in a different size?
Please let me know. Thank you.