Before you begin Your printer must be connected to a wireless network. Note for macOS 10.12 Sierra users: Understand printing errors in OSX 10.12 Sierra
Read a Wireless Network Settings page Signal Strength: Here you will see the strength of the printer's network connection. A signal strength lower than 80% may result in slower performance or errors when printing or scanning. If it is too low, consider moving your printer closer to your wireless router.
Good to know The printer has enough ink and paper. The printer is not displaying an error message . If the problem persists, use the printer driver on your computer to check whether the document can be printed normally.
What to Do As the page where the paper was jammed is not printed, reprint if necessary. When the paper is jammed while duplex printing or duplex copying is in progress, it is possible that the printing or copying order is not as you expect if you resume printing after clearing the paper jam error . In this case, cancel printing and reprint from the beginning.