• Code: 401
• Description: Transfer roller leak error (positive electrode)
  The feedback voltage of the transfer roller is insufficient.
• Causes: • Defective high voltage supply board
  • Loose connection of the PCU
  • Incorrect installation of the transfer unit or the separation unit
  • Defective transfer roller

• Code: 402
• Description: Transfer roller leak error (negative electrode)
  The feedback voltage of the transfer roller is insufficient.
• Causes: • Defective high voltage supply board
  • Loose connection of the PCU
  • Incorrect installation of the transfer unit or the separation unit
  • Defective transfer roller

• Code: 500
• Description: Main motor error
  The main motor does not reach its operation speed within 0.7 second. Or, the main motor remains out of its operation speed for 0.7 second after reaching the operation speed.
• Causes: • Overload
  • Defective main motor

• Code: 541
• Description: Fusing thermistor open error
  The fusing temperature remains lower than the specified temperature by 20 degrees Celsius.
• Causes: • Defective thermistor
  • Incorrect installation of the thermistor
  • Defective power supply unit
  • Loose connectors

• Code: 542
• Description: Fusing temperature warm-up error
  The fusing temperature rises 7 degrees or less in two seconds; and this continues 5 times consecutively. Or, the fusing temperature is not detected within 25 or 35 seconds.
• Causes: • Defective thermistor
  • Incorrect installation of the thermistor
  • Defective fusing lamp
  • Defective power supply unit

• Code: 543
• Description: Fusing overheat error 1
  The fusing temperature detected by the thermistor is 230°C or higher for one second.
• Causes: • Defective thermistor
  • Defective power supply unit

• Code: 544
• Description: Fusing overheat error 2
  The fusing temperature detected by the monitor circuit is 250°C or higher for one second.
• Causes: • Defective thermistor
  • Defective power supply unit

• Code: 545
• Description: Fusing lamp overheat error
  After the fusing temperature reaches the target, the fusing lamp remains on for 12 seconds.
• Causes: • Defective thermistor
  • Incorrect installation of the thermistor
  • Defective power supply unit