1. Open the back door of the paper feeder to see whether paper has jammed there. If so, gently pull out the jammed paper.
2. Remove the paper cassette to see whether the jam is in the paper cassette area. If so, gently release or pull out the jammed paper.
Check that all paper edges are under the bracket at the front of the cassette. Papers edges over the bracket are also considered paper jams.
If you have removed the jammed paper, open and close the top cover to reset the printer.