Ricoh Aficio MP C3001 Service Manual page 1514

Punch Unit
2.12.3 PUNCH UNIT MOVEMENT
The punch movement motor [A] extends and retracts the punch unit to put it at the correct
position for punching.
The punch movement HP sensor [B] detects the position when it retracts, switches off the
punch movement motor, and stops the punch unit at its home position.
The punch drive motor [C] fires the punches that punch holes in the paper below.
B793 62 SM