OKI MC160n User Manual

Media is mis-
feeding.

Envelopes are facing 
the wrong way in Tray 
1.

Load the envelopes in Tray 1 with the 
flaps facing down.

If the flaps are on the long edge (Enve-
lope C6 and Envelope DL), load the 
envelopes with the flap edge toward 
the machine and the flap side facing 
down.

Unsupported media 
(wrong size, thick-
ness, type, etc.) is 
being used.

Use Oki approved media.

The media feed roller 
is dirty.

Clean the media feed roller.

For more details, refer to “Media Roll-
ers” on page 179.