Oki B6100 User Guide
Removing the Offset Catch Tray
4.Turn the printer off by pressing [ O ] on the power switch on the front left of the printer, and disconnect the power cord from the AC outlet.
5.Squeeze the latch on the upper left of the rear cover of the printer, and pull the cover toward you to open it.
6.Press the tabs on the rear of the offset catch tray to release it and lift it off of the printer.