OKI C531

• Code: 251
• Display: SERVICE CALL 251:ERROR
• Description: SD card erasure error
• Remedy:

• Code: 252, 255
• Display: POWER OFF/ON 252:ERROR 255:ERROR
• Description: SD card security error
• Remedy:

• Code: 256, 257
• Display: POWER OFF/ON 256:ERROR 257:ERROR
• Description: SD card error
• Remedy:

• Code: 901 ... 904
• Display: POWER OFF/ON 901:ERROR 904:ERROR (Note)
• Description: Belt temperature error 901: Short circuit 902: Open circuit 903: High temperature 904: Low temperature
• Remedy: Is the cable from the belt thermistor to the CU/PU board connected properly? Does the error occur again?
  Connect the cable properly. Turn off and on the printer. Replace the belt thermistor.

• Code: 923
• Display: POWER OFF/ON 923:ERROR
• Description: A lock error with black image drum
• Remedy: The image drum does not revolve properly. Does the error display is provided again by turning off and on the printer?
  Be sure the image drum is properly installed properly. Replace the image drum unit. Replace the image drum motor.

• Code: 928
• Display: SERVICE CALL 928:ERROR
• Description: Fuser motor lock error
• Remedy: The fuser does not operate properly? Does the error occur again?
  Check that the fuser is properly installed. Replace the fuser. Replace the fuser motor.