# Part
1 Punch unit
2 Entrance roller
3 Diverter feed roller
4 Diverter
5 Top bin exit paper guide
6 Top bin transport roller
7 Sensor (SHPF top bin exit)
8 Top bin exit roller
9 Sensor (SHPF top bin full, transmit and receive)
10 Motor (SHPF transport)
11 Motor (SHPF feed)
4021, 7421
Appendix C: Theory of operation
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