OKI MC873dn

• Code: 040
• Display: Inspection is required. 040:Error
• Description: Detect the CU EEPROM error
• Causes: Does this error message reappear?
• Remedy: Cycle the power. Replace the CU/ PU board.

• Code: 042
• Display: Inspection is required. 042:Error
• Description: Failed to access to the Flash ROM that is directly mounted on the CU/PU board
• Causes: Does this error message reappear?
• Remedy: Cycle the power and format the Flash memory. Replace the CU/ PU board.

• Code: 043
• Display: Inspection is required. 043:Error
• Description: The format varsion of the Flash differs from program supports
• Causes: Does this error message reappear?
• Remedy: Cycle the power and format the Flash memory. Replace the CU/ PU board.

• Code: 045
• Display: Inspection is required. 045:Error
• Description: Failed to fomat the Flash memory
• Causes: Does this error message reappear?
• Remedy: Cycle the power and format the Flash memory. Replace the CU/ PU board.

• Code: 049
• Display: Inspection is required. 049:Error
• Description: Incompatibility between the CU and the engine head type (resolution)
• Causes:
• Remedy: Replace with a head of proper resolution.

• Code: 051
• Display: Inspection is required. 051:Error
• Description: Stopped or unusual movement the CU cooling FAN
• Causes:
• Remedy: Replace the CU cooling FAN.