• Code: 042 ... 045
• Display: Service Call 042: Error to 045: Error
• Description: CU PCB flash ROM error Flash File System Error
  Failed to access flash memory that is surface-mounted on CU PCB.
• Remedy: Failed to access flash memory that is surface-mounted on CU PCB. Replace CU PCB (Must replace EEPROM)

• Code: 048
• Display: Service Call 048: Error
• Description: PS+PCL Model CU ROM is mounted on a PCL model unit. A program for PostScript and PCL models was written on the PCL mode.
• Remedy: Is a standard model program ROM mounted? Check whether the program for the model of the printer is written on the printer. No Replace Program ROM DIMM. Replace with standard program ROM DIMM officially for the model. Replace the CU board with a CU board for the model of the printer.

• Code: 049
• Display: Service Call 049: Error
• Description: CU Type Mismatch CU ROM model mismatches unit.
• Remedy: Is a standard model program ROM mounted? Check whether the program for the model of the printer is written on the printer. No Replace Program ROM DIMM. Replace with standard program ROM DIMM officially for the model. Replace the CU board with a CU board for the model of the printer

• Code: 050
• Display: Service Call 050: Error
• Description: Operator Panel Error
• Remedy: Is the error display reproducible? Yes Refer to the flowchart on “Failure to appear on LCD”.

• Code: 051
• Display: Service Call 051: Error
• Description: CU FAN ERROR CPU cooling fan of CU PCB is abnormal.
• Remedy: Is the connection of the CU PCB normal? Replace and restore fan?
  Normally connect. Replace fan. Replace CU PCB. (Must replace EEPROM)

• Code: 052
• Display: Power Off/on 052: Error
• Description: Image Processor Driver Error
• Remedy: Is the error display reproducible? Power OFF/ON Replace CU PCB. (Replace EEPROM)

• Code: 060
• Display: Power Off/on 060: Error
• Description: Parallel Interface Driver Error
• Remedy: Is the error display reproducible? Power OFF/ON Replace CU PCB. (Replace EEPROM)

• Code: 062
• Display: Power Off/on 062: Error
• Description: USB Drive Error
• Remedy: Is the error display reproducible? Is the Network PCB properly mounted? Power OFF/ON Replace CU PCB. (Replace EEPROM)