• Code: E751-02Xx
• Description: Drum Unit / Faulty Connection of the Toner Receptacle See below X: reading=1, writing=2 x indicates color [Y=1, M=2, C=3, K=4]
  Data error in the memory inside the drum unit
• Remedy: Check the drum unit connections or replace the unit.

• Code: E751-03Xx
• Description: Drum Unit / Faulty Connection of the Toner Receptacle See below X: reading=1, writing=2 x indicates color [Y=1, M=2, C=3, K=4]
  Write error in the memory inside the drum unit (when the number of retries has exceeded the rating)
• Remedy: Check the drum unit connections or replace the unit.

• Code: E751-10Xx
• Description: Drum Unit / Faulty Connection of the Toner Receptacle See below X: reading=1, writing=2 x indicates color [Y=1, M=2, C=3, K=4]
  Trouble in the toner cartridge connections (trouble at the printer side)
• Remedy: Check the toner cartridge connections or replace the cartridge.

• Code: E751-11Xx
• Description: Drum Unit / Faulty Connection of the Toner Receptacle See below X: reading=1, writing=2 x indicates color [Y=1, M=2, C=3, K=4]
  Write error in the memory inside the toner cartridge
• Remedy: Check the toner cartridge connections or replace the cartridge.

• Code: E751-12Xx
• Description: Drum Unit / Faulty Connection of the Toner Receptacle See below X: reading=1, writing=2 x indicates color [Y=1, M=2, C=3, K=4]
  Data error in the memory inside the toner cartridge
• Remedy: Check the toner cartridge connections or replace the cartridge.

• Code: E751-13Xx
• Description: Drum Unit / Faulty Connection of the Toner Receptacle See below X: reading=1, writing=2 x indicates color [Y=1, M=2, C=3, K=4]
  Write error in the memory inside the toner cartridge (when the number of retries has exceeded the rating)
• Remedy: Check the toner cartridge connections or replace the cartridge.

• Code: E804-0000
• Description: Controller fan error
  When a shutdown of the power supply fan has been detected
• Remedy: Check the power supply fan connections or replace the fan.

• Code: E804-0004
• Description: Controller fan error
  When a shutdown of the controller fan has been detected
• Remedy: Check the controller fan connections or replace the fan.