Lexmark C520 Series Service Manual page 41

5022-xxx
Photodeveloper unit/developer (toner) cartridge drive
The photodeveloper units (four) and toner cartridges (four) receive drive power from the EP drive assembly
motors. The top cartridge motor 1 on the EP drive assembly provides drive to the top two photodeveloper units
and toner cartridges (yellow and cyan). Likewise, the bottom cartridge motor 2 drives the two bottom
photodeveloper units and toner cartridges. When the printer's top access door is open, the couplers for the toner
cartridges and photodeveloper units disengage.
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General information