When the document jams in the ADF, the LCD displays [CLEAR ADF], or [CLEAR ADF] and [DOCUMENT TOO LONG] alternately.
Do not open the platen glass cover until the jammed paper is removed. Doing so will result in damaging the document and the paper.
Open the ADF and gently remove the jammed paper from the ADF.
Widen the slide guides until they stop, and remove the paper so as not to be caught by the slide guides. Open the ADF and gently remove the jammed paper from the ADF.
Open the ADF and gently remove the jammed paper from the document output tray.
After removing jammed paper, even edges of the document before loading it in the ADF again.