• Code: 031
• Display: Service call 031: Error
• Description: CU Optional RAM Check Error
• Remedy: Is implementation of the RAM DIMM normal? Does replacement of the program RAM DIMM restore the printer?
  Re-implement the RAM DIMM. Replace the RAM DIMM. Replace the CU/ PU board.

• Code: 036
• Display: Service call 036: Error
• Description: CU RAM DIMM spec. is not supported.
• Remedy: Is the RAM DIMM genuine? Is implementation of the RAM DIMM normal? Does replacement of the program RAM DIMM restore the printer?
  Use a genuine RAM DIMM. Re-implement the RAM DIMM. Replace the RAM DIMM. Replace the CU/PU board (EEPROM replacement required).

• Code: 040
• Display: Service call 040: Error
• Description: CU EEPROM Error
• Remedy: Does this error message reappear? Yes Cycle the power. Replace the CU/ PU board.

• Code: 042, 043, 045
• Display: Service call 042: Error~ 043: Error 045: Error
• Description: Flash File System Error
  Failed to access to the Flash ROM that is directly mounted on the CU board.
• Remedy: Failed to access to the Flash ROM that is directly mounted on the CU board. Format the Flash forcibly. (This requires caution as it erases NIC-F/W. The NIC-F/W must be written with the maintenance utility after formatting.) Execute system maintenance menu > MAINTENANCE MENU > FLASH FORMAT. After FLASH FORMAT is displayed, release the button and wait until the ON LINE is displayed (about 2 minutes). If the error remains, replace the CU/PU board.

• 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.