Ricoh D182 Service Training page 110

 Two-hole punching (top diagram): The motor drives clockwise
then reverse.
 Three-hole punching (bottom diagram): First the punch gear is
turned 180 degrees, then the motor drives clockwise then reverse
Slide 110
No additional notes
Punching - 2
Punch Gear
Sensor
110
OR-C2 Training
Punch Drive
Motor