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)