The error message 'Paper Jam. Clear jam, and then touch OK' displays on the printer control panel. The Power button light might also blink fast.
If the error message 'The original has jammed or the document feeder (ADF) is dirty. To remove the original, open the ADF cover. To clean the ADF, see the user guide' displays on the printer control panel, click here for instructions on clearing an ADF paper jam.