• Code: E821-0001
• Description: There is a cleaner clogging error.
  Clogging of toner inside the cleaner has been detected with reference to an abnormal rise in the cleaner thermistor.
• Remedy: - Remove the collecting toner from inside the cleaner. - Replace the air filter of the heat discharge fan.

• Code: E824-0001
• Description: There is a primary charging cooling fan error.
  The primary charging cooling fan stop signal has been detected for 5 sec or more even when the primary charging cooling fan is on.
• Remedy: - Check the connection of the connector. - Replace the fan.

• Code: E840-0001
• Description: There is a shutter error.
  While the shutter is in operation, the sensor signal is not detected and, in addition, it is still not detected after 3 retries.
• Remedy: - Check the connection of the connector of the shutter motor and the shutter HP sensor. - check the mounting of the pin used to match the shutter gear phase of the fixing unit (See descriptions under "Points to Note When Mounting the Fixing Roller.") - Replace the shutter HP sensor and the shutter motor.

• Code: E840-0002
• Description: There is a shutter error.
  The interval of ON-OFF detection by the sensor in response to shutter operation is shorter than a specific time period.
• Remedy: - Check the connection of the connector of the shutter motor and the shutter HP sensor. - check the mounting of the pin used to match the shutter gear phase of the fixing unit (See descriptions under "Points to Note When Mounting the Fixing Roller.") - Replace the shutter HP sensor and the shutter motor.

• Code: E841-0001
• Description: There is an error in the detection of fixing inlet guide connection.
  At power-on, the connection of the fixing inlet guide solenoid is not detected.
• Remedy: - Check the connection of the connector. - Replace the solenoid.