Lexmark MS911 Service Manual page 635

Feed section paper path
The staple finisher is installed on the printer standard bin and receives paper from the printer exit roller. The motor
(staple finisher transport) drives the transport roller and the compiler feed roller. The transport roller feeds the paper
from the printer exit roller to the compiler feed roller. The sensor (staple finisher paper feed), positioned above the
transport roller, detects the leading and trailing edges of the paper. If no finishing is required, then the paper is
transported to the exit section. If finishing is required, then the paper is transported to the compiler section.
Note: By turning the jam removal knob, the transport and compiler feed rollers can be manually rotated to clear
jams.
# Part
7 Motor (staple finisher exit)
8 Motor (staple finisher upper exit)
9 Upper exit roller solenoid
10 Lower exit roller
11 Upper exit roller
# Part
1 Sensor (staple finisher paper feed)
2 Motor (staple finisher transport)
3 Transport roller
4 Compiler feed roller
Appendix C: Theory of operation
635
4021, 7421