• Code: 402
• Description: Transfer roller leak error 2
  A current leak signal for the transfer roller is detected. A current feedback signal for the transfer roller is not detected.
• Causes: • High voltage supply board defective • Poor connection of the PCU • Transfer/separation unit set incorrectly • Transfer roller damaged

• Code: 500
• Description: Main motor lock
  A main motor lock signal is not detected for more than 7 consecutive checks (700 ms) after the main motor starts to rotate, or the lock signal is not detected for more than 7 consecutive checks during rotation after the last signal.
• Causes: • Too much load on the drive mechanism • Main motor defective

• Code: 541
• Description: Fusing thermistor open (center)
  The fusing temperature detected by the thermistor is below 71°C and is not corrected after the main power switch is turned on.
• Causes: • Fusing thermistor defective or out of position • Power supply board defective • Loose connectors

• Code: 542
• Description: Fusing temperature warm-up error (center)
  The fusing temperature rises less than 7 degrees in 2 seconds, and this continues 5 times consecutively. The fusing temperature is not detected in 25 or 35 seconds.
• Causes: • Fusing thermistor defective or out of position • Fusing lamp open • Power supply board defective

• Code: 543
• Description: Fusing overheat error (center)
  The fusing temperature is over 230°C for 1 second (detected by the thermistor).
• Causes: • Fusing thermistor defective • Power supply board defective

• Code: 544
• Description: Fusing overheat error (center) 2
  The fusing temperature is over 250°C for 1 second (detected by the fusing temperature monitor circuit).
• Causes: • Fusing thermistor defective • Power supply board defective

• Code: 545
• Description: Fusing lamp overheat error (center)
  After the fusing temperature reaches the target temperature, the fusing lamp does not turn off for 12 consecutive seconds.
• Causes: • Fusing thermistor defective or out of position • Power supply board defective

• Code: 546
• Description: Unstable fusing temperature (center)
  The fusing temperature varies 50°C or more within 1 second, and this occurs 2 consecutive times.
• Causes: • Thermistor defective or out of position • Power supply unit defective