Ricoh D009 Service Manual page 69

One of the securing brackets is used as a securing tool (the cutout [6] is used
in step 6). But the cutout [7] is for attaching the tray heater. Therefore, attach
the securing brackets [5] after installing the tray heater if you install the tray
heater.
9. Load paper into the paper feed unit.
10. Turn on the main power switch of the machine.
11. Check the paper feed unit operation and copy quality.
SM
Paper Feed Unit Installation (D351)
2-23 D009/D011/D012/D013/D091/D092