HP LaserJet Pro MFP M521 - Page 24

Motors, fans, clutches, solenoids, switches, and sensors
Figure 1-3 Motors
Main motor
Fuser motor
Table 1-2 Motors
Description Components driven Fault detection
Main motor (M8001)
●
Pickup roller
●
Feed roller
●
Transfer roller
●
Photosensitive drum
●
Developing roller
●
Duplex repickup roller
Yes
Fuser motor (M8002)
●
Pressure roller
●
Delivery roller
●
Fuser-delivery roller
●
Duplex-feed roller
Yes
8 Chapter 1 Theory of operation ENWW