Oki C710dtn User Manual page 95

14. Check inside the cover for sheets in this area and remove any
that you find, then close the cover.
15. Pull out the paper tray and ensure that all paper is stacked
properly, is undamaged, and that the paper guides are
properly positioned against the edges of the paper stack.
When satisfied, replace the tray.
16. Finally, close the top cover and press down firmly so that the
cover latches closed.
When the jam has been cleared, if Jam Recovery is set to ON in
the System Configuration Menu, the printer will attempt to reprint
any pages lost due to paper jams.
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– C710n User's Guide