• Code: 240
• Description: LD error
  The IPU detected a problem at the LD unit.
• Causes: Defective LD unit. Disconnect harness. Disconnect LD Driver.
• Remedy: • Connect the harness properly. • Replace the LD unit.

• Code: 312
• Description: Charge roller current leak
  The PWM duty output exceeded 50% for longer than 200 ms, indicating a leak in the charge roller current.fective BCU.
• Causes: Cartridge (charge roller) defective. High voltage supply board defective. Disconnect harness.
• Remedy: • Turn the Power Switch Off and On. • Connect the harness properly. • Replace the AIO unit. • Replace the High voltage power supply board.

• Code: 320
• Description: Development Bias leak
  The PWM duty output exceeded 50% for longer than 200 ms, indicating a leak in the charge roller current.
• Causes: Bias applying section leak. High voltage supply board defective. Disconnect harness. Development Bias CN loose
• Remedy: • Connect the harnesses properly. • Replace the AIO. • Replace High voltage power supply board.

• Code: 440
• Description: Primary Transfer PP output leak
  The PWM duty output exceeded 50% for longer than 200 ms, indicating a leak in the charge roller current.
• Causes: High voltage supply board defective. Disconnect harness. Development Bias CN loose
• Remedy: • Connect the harnesses properly. • Replace the AIO. • Replace High voltage power supply board.

• Code: 500
• Description: Main motor lock
  The machine does not detect a main motor lock signal within 1 second after the main motor starts to rotate. -or- The machine does not detect a main motor lock signal for 250 ms continuously while the main motor is rotating.
• Causes: Mechanical overload on the drive mechanism. Main motor defectivess.
• Remedy: • Remove foreign materials on the drive mechanism. • Turn the Power Switch Off and On. • Connect the harnesses properly. • Replace the main motor.

• Code: 530
• Description: Exhaust fan motor error
  The CPU detects an exhaust fan lock signal for more than 2 seconds.
• Causes: Mechanical overload on the Exhaust fan mechanism. Exhaust fan harness loose or broken
• Remedy: • Remove foreign materials on the drive mechanism. • Turn the Power Switch Off and On. • Connect the harnesses properly. • Replace the Exhaust fan.

• Code: 531
• Description: Reverse Fan Motor error
  The CPU detects a Reverse fan lock signal for more than 2 seconds.и#0
• Causes: Mechanical overload on the Reverse fan mechanism. Reverse fan harness loose or broken
• Remedy: • Remove foreign materials from the reverse fan. • Turn the Power Switch Off and On. • Connect the harnesses properly. • Replace the reverse fan.

• Code: 532
• Description: PSU Fan Motor error
  The CPU detects a PSU fan lock signal for more than 2 seconds.
• Causes: Mechanical overload on the PSU fan mechanism. PSU fan harness loose or broken
• Remedy: • Remove foreign materials from the PSU fan. • Turn the Power Switch Off and On. • Connect the harnesses properly. • Replace the PSU fan.