Paper on which received documents can be printed is not set.
Summary
Received documents can be printed on A4 or Letter size paper. Load A4 or Letter size paper and set its size. Also, set the paper type to <Plain>, <Plain L>, <Recycled>, or <Color> depending on the loaded paper.
If you print received documents on paper other than A4 or LTR size, some portions of the image may be missing or the image may be divided and printed onto several sheets.