• Code: 001
• Display: Service Call 001:Error
• Description: Machine Check Exception hardware problem was detected (PCB failure or insufficient power capacity). (PDL only) When CE1 was not detected, SC001 occurs.
• Remedy: Replace the printer control PCB.

• Code: 002, 003, 005
• Display: Power Off/On 002:Error 003:Error 005:Error
• Description: CPU unexpected exception
• Remedy: Does this error message reappear? Yes Power OFF/ON. Replace the printer control PCB.

• Code: 012
• Display: Power Off/On 012:Error
• Description: A watchdog timeout occurred due to no system timer interrupt for unknown reasons.
• Remedy: Does this error message reappear? Yes Power OFF/ON. Replace the printer control PCB.

• Code: 020
• Display: Service Call 020:Error
• Description: The CU FW in Nand FLASH has not been detected, or a check SUM error has occurred.
• Remedy: Does this error message reappear? Yes Power OFF/ON. Replace the printer control PCB.

• Code: 024
• Display: Service Call 024:Error
• Description: CU Font ROM Hash Error
• Remedy: Does this error message reappear? Yes Power OFF/ON. Replace the printer control PCB.

• Code: 030
• Display: Service Call 030:Error
• Description: CU RAM Check Error
• Remedy: Does this error message reappear? Yes Power OFF/ON. Replace the printer control PCB.

• Code: 040
• Display: Service Call 040:Error
• Description: CU EEPROM Error
• Remedy: Does this error message reappear? Yes Power OFF/ON. Replace the printer control PCB.

• Code: 042, 043, 045
• Display: Service Call 042:Error 043:Error 045:Error
• Description: Flash File System Error
• Remedy: Failed to access to the Flash ROM that is mounted directly on the CU PCB. 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.) If the error remains, replace the printer control PCB.