• Code: 390-03
• Description: Drum gear position sensor error: M
  The machine does not detect the drum position signal for 3 seconds at the drum phase adjustment.
• Causes: • Dirty or defective drum gear position sensor
• Remedy: 1. Clean the drum gear position sensor. 2. Check the harness connection. 3. Replace the drum gear position sensor. 4. Replace the PCDU.

• Code: 390-04
• Description: Drum gear position sensor error: Y
  The machine does not detect the drum position signal for 3 seconds at the drum phase adjustment.
• Causes: • Dirty or defective drum gear position sensor
• Remedy: 1. Clean the drum gear position sensor. 2. Check the harness connection. 3. Replace the drum gear position sensor. 4. Replace the PCDU.

• Code: 396-01
• Description: Drum/Development motor error: K
  The machine detects a High signal from the drum/development motor for 2 seconds after the drum/development motor turned on.
• Causes: • Overload on the drum/development motor • Defective drum/development motor • Defective harness • Shorted 24 V fuse on the PSU • Defective interlock system
• Remedy: 1. Check or replace the harness. 2. Replace the drum/development motor. 3. Replace the 24V fuse on the PSU.

• Code: 396-02
• Description: Drum/Development motor error: C
  The machine detects a High signal from the drum/development motor for 2 seconds after the drum/development motor turned on.
• Causes: • Overload on the drum/development motor • Defective drum/development motor • Defective harness • Shorted 24 V fuse on the PSU • Defective interlock system
• Remedy: 1. Check or replace the harness. 2. Replace the drum/development motor. 3. Replace the 24V fuse on the PSU.

• Code: 396-03
• Description: Drum/Development motor error: M
  The machine detects a High signal from the drum/development motor for 2 seconds after the drum/development motor turned on.
• Causes: • Overload on the drum/development motor • Defective drum/development motor • Defective harness • Shorted 24 V fuse on the PSU • Defective interlock system
• Remedy: 1. Check or replace the harness. 2. Replace the drum/development motor. 3. Replace the 24V fuse on the PSU.

• Code: 396-04
• Description: Drum/Development motor error: Y
  The machine detects a High signal from the drum/development motor for 2 seconds after the drum/development motor turned on.
• Causes: • Overload on the drum/development motor • Defective drum/development motor • Defective harness • Shorted 24 V fuse on the PSU • Defective interlock system
• Remedy: 1. Check or replace the harness. 2. Replace the drum/development motor. 3. Replace the 24V fuse on the PSU.

• Code: 441
• Description: Image transfer unit motor error
  The motor LOCK signal is not detected for more than two seconds while the motor START signal is on.
• Causes: • Motor overload • Defective image transfer unit motor
• Remedy: 1. Replace the image transfer belt unit. 2. Replace the IOB.

• Code: 442
• Description: Image transfer belt contact motor error
  The image transfer belt contact sensor does not detect the movement of actuator at the sensor while the polygon motor rotates.
• Causes: • Dirty image transfer belt contact sensor • Defective image transfer belt contact motor • Disconnected connector of image transfer belt contact sensor or motor • Disconnected cable
• Remedy: 1. Replace the image transfer belt contact sensor. 2. Replace the image transfer belt contact motor.