Xerox Document Binder 120 Operator's Manual page 100

PREPARING THE BINDER 120 FOR ON-LINE AND OFF-LINE OPERATION
3-32
15. Rotate the Receiving Plate down until it rests on the Output Tray
of the host machine.
0312087A-SBR
WARNING: If you are wearing open-toe shoes, be careful when
pressing the Lock Levers.
16. Lock at least two of the Binder 120 Casters by pressing with
your foot on the gray Lock Lever of the Casters.
XEROX DOCUMENT BINDER 120 OPERATOR MANUAL