• Code: 410
• Description: 2nd transfer (paper transfer) electric leakage (+)
  Paper transfer starts. → The positive (+) output is at the minimum PWM duty value. → The returning voltage stays at 2.7 V or more for 60 milliseconds.
• Causes: • Short circuit in the paper transfer unit • Defective high voltage supply board • Defective harness (BICU -high voltage supply board)

• Code: 411
• Description: 2nd transfer (paper transfer) electric leakage (–)
  Paper transfer starts. → The negative (–) output is at the minimum PWM duty value. → The returning voltage stays at 4.5 V or more for 60 milliseconds.
• Causes: • Short circuit in the paper transfer unit • Defective high voltage supply board • Defective harness (BICU -high voltage supply board)

• Code: 412
• Description: 2nd transfer (paper transfer) disconnection (+)
  Paper transfer starts. → The positive (+) output is at the maximum PWM duty value for 60 milliseconds.
• Causes: • Right cover not closed • Defective transfer roller contact mechanism • Defective high voltage supply board • Defective harness (BICU -high voltage supply board)

• Code: 420
• Description: Discharge error (fusing bias)
  The discharge circuit is operating at the maximum PWM duty value for 60 milliseconds.
• Causes: • Fusing bias short circuit • Scratched fusing belt • Defective high voltage supply board • Defective harness (BICU -high voltage supply board)

• Code: 421
• Description: Discharge plate error
  During discharging, the leakage detection signal is low for 60 milliseconds.
• Causes: • Short circuit in the discharge plate • Defective high voltage supply board • Defective harness (BICU -high voltage supply board)

• Code: 430
• Description: Transfer belt cleaning error
  • Cleaning is operating at the maximum PWM duty value for 60 milliseconds.
• Causes: • Short circuit in the transfer belt cleaning unit • Defective high voltage supply board • Defective harness (BICU -high voltage supply board)

• Code: 440
• Description: Main motor error
  • The main motor starts or changes speed. → The lock signal does not continue for 1 second within 3 seconds. • The main motor starts. → The lock signal is detected and operation proceeds normally. → The lock signal is interrupted for 1 second.
• Causes: • Defective main motor • Too much load of the main motor drive

• Code: 460
• Description: Temperature sensor error
  The output is 4.5 V (or higher) or 0.3 V (or lower) for 12 seconds.
• Causes: • Defective temp./ humidity sensor • Defective circuit • Defective connector