Oki B411d User Manual page 125

8. Re-install the image drum complete with toner
cartridge, ensuring that the pegs (1) correctly locate
into the slots on each side of the printer (2).
9. Lower the top cover but do not press down to latch it
closed yet. This will protect the drum from excessive
exposure to room lighting, while you check the
remaining area for jammed sheets.
125 > B411/B431 Troubleshooting