• Code: 050
• Display: Service Call 050: Error
• Description: Operator Panel Error
• Remedy: Does error display reappear? Refer to no LCD display flow chart.

• Code: 051
• Display: Service Call 051: Error
• Description: CU Fan Error Abnormal CPU cooling fan on CU board.
• Remedy: Is connector set properly on CU board? Is error recovered by replacing fan?
  Connect properly. Replace fan. Replace CU board. (Replace EEPROM.)

• Code: 063
• Display: Service Call 063: Error
• Description: Network comm. Error Abnormal H/W I/F between CU-NIC
• Remedy: Is network board set properly? Is error recovered by replacing network board?
  Set properly. Replace Network. Replace CU board. (Replace EEPROM.)

• Code: 065
• Display: Service Call 065: Error
• Description: NIC Combination Error
• Remedy: Is proper Network board for the model set?
  Replace NIC card. Replace with proper Network board.

• Code: 070
• Display: Service Call 070: Error
• Description: CANT_HAPPEN PS firmware fault detected.
• Remedy: Confirm that error is recovered by turning power OFF/ON. Replace CU board. (Replace EEPROM.)

• Code: 072
• Display: Service Call 072: Error
• Description: Engine communication error I/F error between PU-CU.
• Remedy: Is CU assembly set properly? Is error recovered by replacing CU board?
  Set properly. Replace CU board. (Replace EEPROM.) Replace PU board.

• Code: 073 ... 075
• Display: Service Call 073: Error ~ 075: Error
• Description: Video overrun detect
• Remedy: Is CU assembly set properly? Is error recovered by replacing CU board?
  Set properly. Replace CU board. (Replace EEPROM.)

• Code: 102
• Display: Service Call 102: Error
• Description: Error in engine RAM read/write detected at power ON.
• Remedy: Does error reoccur? Replace engine control board.