• Code: SC400
• Description: Transfer Bias Roller Leak
  After the transfer current begins, the value of the transfer current set with SP2301 (Transfer Current Adjustment) exceeds the specified setting, and feedback voltage lower than 0.75V is detected for 16 counts (about 100 ms).
• Causes: • CBG power pack defective • Poor connection between the transfer current terminal and the transfer power pack.

• Code: SC401
• Description: Transfer roller open error
  When transfer bias is applied to the bias roller while the main motor is operating, after bias output has started, one of the following conditions exists: • Input connector is defective • Output connector is defective
• Causes: • Transfer power pack defective • Poor connection between the transfer current terminal and the transfer power pack.

• Code: SC430
• Description: Quenching Lamp Error
  When finishing the process control initial setting at the end of a job and the drum motor has stopped, the drum potential detected by the drum potential sensor is beyond the normal range.
• Causes: • Quenching lamp defective • Quenching lamp connector defective • Poor connection between quenching lamp and CBG power pack

• Code: SC440
• Description: Drum Motor Lock
  The drum motor lock signal is longer than 2 s while the drum motor is on.
• Causes: • Motor lock due to overload • BCU defective

• Code: SC441
• Description: Development Motor Lock
  While the motor is operating, the motor lock signal remains LOW for 2 s.
• Causes: • Motor lock due to overload • BCU defective

• Code: SC491
• Description: Polygonal Mirror Motor Cooling Fan Motor Lock
  The polygonal mirror motor cooling fan motor lock signal remains HIGH for 5s while the polygonal mirror motor cooling fan motor is on.
• Causes: • Drive mechanism overload • Obstruction has stopped the fan • Fan connector loose

• Code: SC492
• Description: Development Unit Suction Motor
  While the development unit toner suction motor is operating, the lock sensor output does not change for 1 s.
• Causes: • Motor lock due to overload • BCU defective

• Code: SC495
• Description: Toner Bottle Unit Error
  The toner hopper sensor cannot detect toner even after the toner supply coil clutch turns on 10 times within 2 s during toner supply during copying.
• Causes: • Toner supply pump motor defective • Toner supply pump motor connector loose • Toner supply coil clutch defective • Toner supply coil clutch connector defective • Toner near-end sensor (in the toner bank) defective • Toner near-end sensor (in the toner bank) spring defective • Toner blockage in the toner supply pump or toner supply path • Toner hopper sensor defective