HP LaserJet 4100 - Page 58

56 Theory of operation C9148-90909
ADF components
Figure 20. ADF-unit components
7
8
1
2
4
3
6
5
8
1
2
4
3
6
5
8
9
7
1 ADF separation roller
2 ADF pickup roller
3 ADF pickup solenoid (SL1)
4 ADF drive motor
5 ADF-to-scanner controller
connector
6 document-detect sensor
flag(PS2)
7 leading-edge sensor (inside
the ADF; PS1)
8 ADF separation pad
9 ADF sliding media guides