• Code: E531-0002
• Description: - Staple unit failure
  - Staple HP sensor failure
  - Finisher controller PCB failure
  - The staple home position had been left once, but it was not reached again when 400 ms have lapsed since start of staple operation. In addition, the staple home position could not be reached by performing reverse operation for 400 ms.
• Remedy: - Check the connector of the staple unit. - Replace the staple unit. - Replace the finisher controller PCB.

• Code: E540-0001
• Description: - Standard tray shift motor or finisher controller PCB failure
  - Standard tray HP sensor failure
  - Standard tray clock sensor failure
  - Standard tray shift motor load failure
  The standard tray was moved but the paper surface was not detected.
• Remedy: - Check the connector of the standard tray HP sensor. - Check the connector of the standard tray clock sensor. - Check the connector of the standard tray shift motor. - Replace the standard tray HP sensor. - Replace the standard tray clock sensor. - Replace the standard tray shift motor. - Replace the finisher controller PCB.

• Code: E540-0002
• Description: - Standard tray shift motor or finisher controller PCB failure
  - Standard tray HP sensor failure
  - Standard tray clock sensor failure
  - Standard tray shift motor load failure
  Cannot move (to the pickup position) within the specified time.
• Remedy: - Check the connector of the standard tray HP sensor. - Check the connector of the standard tray clock sensor. - Check the connector of the standard tray shift motor. - Replace the standard tray HP sensor. - Replace the standard tray clock sensor. - Replace the standard tray shift motor. - Replace the finisher controller PCB.

• Code: E540-0003
• Description: - Standard tray shift motor or finisher controller PCB failure
  - Standard tray HP sensor failure
  - Standard tray clock sensor failure
  - Standard tray shift motor load failure
  The standard tray was operated, but it did not reach the sensor within 300 ms.
• Remedy: - Check the connector of the standard tray HP sensor. - Check the connector of the standard tray clock sensor. - Check the connector of the standard tray shift motor. - Replace the standard tray HP sensor. - Replace the standard tray clock sensor. - Replace the standard tray shift motor. - Replace the finisher controller PCB.

• Code: E540-0005
• Description: - Standard tray shift motor or finisher controller PCB failure
  - Standard tray HP sensor failure
  - Standard tray clock sensor failure
  - Standard tray shift motor load failure
  The encoder clock signal was not detected two or more times when the standard tray was operated for 300 ms.
• Remedy: - Check the connector of the standard tray HP sensor. - Check the connector of the standard tray clock sensor. - Check the connector of the standard tray shift motor. - Replace the standard tray HP sensor. - Replace the standard tray clock sensor. - Replace the standard tray shift motor. - Replace the finisher controller PCB.

• Code: E542-0001
• Description: - Optional tray motor or finisher controller PCB failure
  - Optional tray HP sensor failure
  - Optional tray clock sensor failure
  - Optional tray shift motor load failure
  The optional tray was operated, but the paper surface was not detected.
• Remedy: - Check the connector of the optional tray HP sensor. - Check the connector of the optional tray clock sensor. - Check the connector of the optional tray shift motor. - Replace the optional tray HP sensor. - Replace the optional tray clock sensor. - Replace the optional tray shift motor. - Replace the finisher controller PCB.

• Code: E542-0002
• Description: - Optional tray motor or finisher controller PCB failure
  - Optional tray HP sensor failure
  - Optional tray clock sensor failure
  - Optional tray shift motor load failure
  Cannot move (to the pickup position) within the specified time.
• Remedy: - Check the connector of the optional tray HP sensor. - Check the connector of the optional tray clock sensor. - Check the connector of the optional tray shift motor. - Replace the optional tray HP sensor. - Replace the optional tray clock sensor. - Replace the optional tray shift motor. - Replace the finisher controller PCB.

• Code: E542-0003
• Description: - Optional tray motor or finisher controller PCB failure
  - Optional tray HP sensor failure
  - Optional tray clock sensor failure
  - Optional tray shift motor load failure
  - The optional tray was moved upward, but it did not reach the HP sensor within 3000 ms.
• Remedy: - Check the connector of the optional tray HP sensor. - Check the connector of the optional tray clock sensor. - Check the connector of the optional tray shift motor. - Replace the optional tray HP sensor. - Replace the optional tray clock sensor. - Replace the optional tray shift motor. - Replace the finisher controller PCB.