Oki C5550 MFP User Manual page 159

15. Check inside the cover for sheets in this area and remove
any that you find, then close the cover.
Jams 4.eps
16. 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.
Jams 5.eps
17. Close the top cover and press down firmly at both sides so
that the cover latches closed.
C5550 MFP User's Guide
Troubleshooting > 159