PUNCH DRIVE MECHANISM 
SM 3 B377 
Punch Unit 
B377 
 
 
 
 
When the finisher has received the command that changes the number of punch 
holes for the job, the punch hole motor [A] turns on until the actuator disk changes 
the status of the punch hole switch [B] (until it switches on or off). This indicates 
that the cover [C] and the punch cam [D] have moved to one side or the other to 
determine which punchers are used. 
 
 
B377D504.WMF 
[A]
[B]
[C]
[D]