Oki ML1120 User Manual page 38

4. Remove the Input Tray and Rear Cover together by
gripping the Input Tray at both sides and pulling it up and
away from the printer.
5. Lift the Pin Tractor covers and remove the forms.
6. Close the Pin Tractor covers.
7. Replace the Input Tray and Rear Cover by fitting the Rear
Cover into the grooves at the back of the printer and
ML1120/ML1190 eco User's Guide – Paper handling > 38