• Code: E808-0000
• Description: Error in low-voltage power supply PCB (error in zero cross)
  Error in low-voltage power supply PCB
• Remedy: Replace low-voltage power supply PCB, replace DC controller PCB

• Code: E811-0000
• Description: Error in detection of new drum unit
  Error in blowout of fuse for detection of new drum unit (process cartridge)
• Remedy: Check the connection of drum unit, replace it Replace DC driver PCB

• Code: E811-0001
• Description: Error in detection of new drum unit
  Error in blowout of fuse for detection of new drum unit (process cartridge)
• Remedy: Check the connection of drum unit, replace it Replace DC driver PCB

• Code: E840-0000
• Description: Fan shutter error
  Fan shutter open/close operation Error Abnormal rotation of the fan shutter motor Defect of the fan shutter position sensor Defect of the fan shutter home position error Defect of the DC controller PCB
• Remedy: - Replace the fan shutter motor - Replace the fan shutter position sensor - Replace the fan shutter home position sensor - Replace the DC controller PCB

• Code: E990-0000
• Description: Error in the waste toner shutter
  When the output of the waste toner shutter opening and shutting detection sensor doesn't become "H" when it WMUPR period after the sleep returns after eight hours or more pass, the door opening and shutting is detected or main power switch turns on.
• Remedy: - Check that the drum unit is properly installed - Replace the waste toner shutter sensor