• Code: 534-01
• Description: Third duct fan error
  The lock sensor value is monitored every 100 ms when the motor is ON. If the retrieval of the lock signal fails 100 times consecutively, it is determined as a failure to rotate properly.
• Causes: Motor overload. Defective motor. Loose connection. Broken harness. Defective IOB.
• Remedy: • Replace the motor. • Reconnect the connector. • Replace the harness. • Replace the IOB.

• Code: 534-02
• Description: Tube cooling fan error
  The lock sensor value is monitored every 100 ms when the motor is ON. If the retrieval of the lock signal fails 100 times consecutively, it is determined as a failure to rotate properly.
• Causes: Motor overload. Defective motor. Loose connection. Broken harness. Defective IOB.
• Remedy: • Replace the motor. • Reconnect the connector. • Replace the harness. • Replace the IOB.

• Code: 535
• Description: Paper exit fan error
  The lock sensor value is monitored every 100 ms when the motor is ON. If the retrieval of the lock signal fails 100 times consecutively, it is determined as a failure to rotate properly.
• Causes: Motor overload. Defective motor. Loose connection. Broken harness. Defective IOB.
• Remedy: • Replace the motor. • Reconnect the connector. • Replace the harness. • Replace the IOB.

• Code: 538
• Description: AC controller board fan error
  The lock sensor value is monitored every 100 ms when the motor is ON. If the retrieval of the lock signal fails 100 times consecutively, it is determined as a failure to rotate properly.
• Causes: Defective motor. Loose connection. Disconnected harness. Defective IOBe IOB.
• Remedy: • Replace the motor. • Reconnect the connector. • Replace the harness. • Replace the IOB.

• Code: 540
• Description: Fusing/Paper exit motor error
  At the fusing delivery brushless motor, the lock signal is monitored every 100 ms. If the High status occurs consecutively 20 times, it is determined as a failure to rotate properly.
• Causes: Motor overload. Defective motor. Loose connection. Broken harness. Shorted 24 V fuse on the PSU. Defective interlock system.
• Remedy: • Replace the motor. • Reconnect the connector. • Replace the harness. • Shorted 24 V fuse on the PSU. • Repair the interlock system.

• Code: 541
• Description: Fusing sleeve belt thermopile error
  The temperature detected by the fusing sleeve belt thermopile does not reach -50°C for 0.1 seconds.
• Causes: Defective thermopile. Defective thermistor. Loose connection.
• Remedy:

• Code: 542
• Description: Fusing sleeve belt warm-up error 1
  The fusing sleeve belt temperature does not reach 81C for 7 seconds after the inverter turned on.
• Causes: Dirty thermopile lenses. Defective thermistor. Loose connection of the thermistor. The input voltage is outside the prescribed ratings. This is determined after the device for preventing excessive temperature rise operates.
• Remedy:

• Code: 543
• Description: Fusing sleeve belt overheat: Center (software error)
  The detected fusing temperature stays at 240°C for 1 second for 10 consecutive times.
• Causes: The triac switch has shorted out. Defective IOB. Defective BCU.
• Remedy: