Xerox 16 Series - Manual (Page 46)

2-4 General Procedures
3 Open the Sheet Eject Strap assembly, as shown in Figure 2-2.
4 Release the Punch Arm retaining levers down and to the side, as shown
in Figure 2-2.
Figure 2-2: Unlocking the Die Assembly
5
Unlock the Die: turn the Die Lock knob clockwise until a "click" is felt,
as shown in Figure 2-2. Do not turn past that point or you will lock the
Die again.
Sheet Eject Strap
Assembly
Punch Arm
Retaining
Levers
Die Lock
Knob