OKI C841n

• Code: 049
• Display: Service call 049: Error
• Description: Incompatibility between the CU and the engine head type (resolution)
• Remedy: 1) Replace the CU/ PU board with the one for the proper head. 2) Replace with a head of proper resolution.

• Code: 052
• Display: Power off/on 052: Error
• Description: A DMA Abort error was detected with the Image Processor.
• Remedy: Does this error message reappear? Yes Cycle the power. Replace the CU/ PU board.

• Code: 067
• Display: Service call 067: Error
• Description: A communication error was detected during communication with the Sleep Mode interface supervisor program.
• Remedy: Does this error recur? Yes Cycle the power. Replace the CU/ PU board.

• Code: 068
• Display: Service call 068: Error
• Description: The Sleep Mode interface supervisor program was not found.
• Remedy: Does this error recur after power restoration? Yes Program writing by service personnel.

• Code: 069
• Display: Service call 069: Error
• Description: Malfunction of the NIC chip was detected.
• Remedy: Does this error recur? Yes Cycle the power. Replace the CU/ PU board.

• Code: 070
• Display: Power off/on 070: Error
• Description: A PSE firmware error was detected.
• Remedy: Does this error recur? Yes Cycle the power. Replace the CU/ PU board.