Oki MB492dn User Manual page 577

(7) Pull out the paper upward.
If you fail to remove the jammed paper, do not pull out the paper forcibly but follow the procedure below.
(1) Return the image drum into the machine, and then close the top cover.
(2) Turn the machine off, and then turn it on again. When the motor starts rotating, pull out the paper while holding its top end.
Note
If paper jams when you set it, check that no paper has been left in the paper feed units. To release the alarm display, open and
close the top cover.
8.
Check that the right and left pegs (1) of the image drum are fitted into both slots (2) of the machine,
and then return the image drum with the toner cartridge into the machine.
9.
Close the top cover.
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