HP LaserJet Pro M402d

Figure 1-20 Toner cartridge system
DC controller
Cartridge
E-label
Photosensitive drum
Developer roller
M1
Primary charging
roller
Table 1-11 Toner cartridge functions
Function Supported feature
Toner cartridge presence detection Yes
Toner level detection Yes
Toner cartridge life detection Yes
Toner cartridge mis-installation detection No
Drum discharge No
Transfer cleaning Yes
26 Chapter 1 Theory of operation ENWW