• 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? Is the applicable RAM DIMM difference mounted normal? Is operation restored by replacing the applicable RAM DIMM?
  Use a standard RAM DIMM. Re-mount applicable RAM DIMM. Replace RAM DIMM. Replace CU PCB. (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?
  REPLACE EEPROM. (User must correct environmental conditions) 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? Replace CU PCB. (Must replace EEPROM)

• 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.
• Remedy: Is a standard model program ROM mounted? Replace Program ROM DIMM. Replace with standard program ROM DIMM officially for the model.

• Code: 049
• Display: Service Call 049: Error
• Description: CU Type Mismatch CU ROM model mismatches unit.
• Remedy: Is a standard model program ROM mounted? Replace Program ROM DIMM. Replace with standard program ROM DIMM officially for the model.

• Code: 050
• Display: Service Call 050: Error
• Description: Operator Panel Error
• Remedy: Is the error display reproducible? 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)