• Code: 001
• Display: Service Call 001: Error
• Description: A heavy trouble of the CU substrate (defective substrate or power supply capacity shortage) was detected.
• Remedy: Is the error display reproducible? Yes Power OFF/ON Is the error display reproducible? Yes Replace CU PCB. (Must replace EEPROM)

• Code: 002 ... 007
• Display: Service Call Power off/on nnn: Fatal Error PC: nnnnnnnn LR: nnnnnnnn FR: nnnnnnnn 002: Error to 007: Error
• Description: This stems from a variety of causes. For analyzing causes, record three numbers (called program counting value) indicated below LCD column and a printer firmware version. [Cause] (1) Unmatched print data and printer FW (2) Damaged EEPROM data (3) Defect ROM DIMM or RAM DIMM (4) Defect components etc. of CPU and ASIC (5) Others Keep on an alyzing causes if an error still remains. Above mentioned (1) to (4) is likelihood of causes.
• Remedy: Record three digital numbers below LCD column. Restart with OFF/ON? Yes Notify three digital numbers below LCD column and F/W version. Does an error occur in a particular print data? No Check if it occurs depending on a print data. Is the error display reproducible? Yes Request for print data investigation. No Change RAM DIMM or ROM DIMM. Is the error display reproducible? Is the error display reproducible? Yes Replace CU PCB. (Must replace EEPROM) Yes Initialize EEPROM. No Re-execute Network setup, such as user setup etc. for use. Yes Change the printer.

• Code: 025
• Display: Service Call 025: Error
• Description: CU Font ROM Hash Error1
• Remedy: Detected a Font Data hash check error. (Japan Model only) Replace CU PCB. (Must replace EEPROM)

• Code: 030
• Display: Service Call 030: Error
• Description: CU Resident RAM Check Error
• Remedy: Is the error display reproducible? Yes Replace CU PCB. (Must replace EEPROM)

• Code: 031
• Display: Service Call 031: Error
• Description: CU Slot1 DIMM RAM Check Error
• Remedy: Is the applicable RAM DIMM mounted properly? No Re-mount applicable RAM DIMM. Is operation restored by replacing the applicable RAM DIMM? Yes Replace RAM DIMM. No Replace CU PCB. (Must replace EEPROM)

• Code: 037
• Display: Service Call 037: Error
• Description: Slot2 RAM Spec error Specification of DIMM in CU RAM slot2 is unsupported.
• Remedy: Is this a standard RAM DIMM? No Use a standard RAM DIMM. Is the applicable RAM DIMM difference mounted normal? No Re-mount applicable RAM DIMM. Replace RAM DIMM. Is operation restored by replacing the applicable RAM DIMM? Yes Replace CU PCB. No (Must replace EEPROM)

• Code: 040
• Display: Service Call 040: Error
• Description: CU EEPROM ERROR
• Remedy: Is the problem corrected by replacing the CU PCB EEPROM? Yes REPLACE EEPROM. (User must correct environmental conditions) No Replace CU PCB. (Must replace EEPROM)

• Code: 041
• Display: Service Call 041: Error
• Description: CU FLASH ERROR CU PCB flash ROM error
• Remedy: Is the error display reproducible? Yes Replace CU PCB. (Must replace EEPROM)