• Code: A0-01
• Description: PCU PWB ROM error
• Causes: The firmware version-up is not completed properly by interruption of the power during the version-up operation, etc. ROM trouble.
• Remedy: Use SIM49-1 to perform the version-up procedure again. Replace the ROM.

• Code: A0-02
• Description: SCU PWB ROM error
• Causes: The firmware version-up is not completed properly by interruption of the power during the version-up operation, etc. ROM trouble.
• Remedy: Use SIM49-1 to perform the version-up procedure again. Replace the ROM.

• Code: A0-04
• Description: ACU PWB ROM error (when scanner expansion kit is installed)
• Causes: The firmware update is failed because of turning OFF the power during the firmware update operation, etc. ROM trouble.
• Remedy: Use SIM49-1 to execute update of the firmware. Replace the ROM.

• Code: A0-15
• Description: DSK BOOT version disagreement
• Causes: Firmware combination error between the DSK and the BOOT.
• Remedy: Check the combination between the DSK and the BOOT.

• Code: A0-17
• Description: Inconsistency between the UI data and the CPU firmware version
• Causes: Combination error between the UI contents data and the CPU UI firmware version.
• Remedy: Install the firmware in the all firmware version up mode.

• Code: A0-20
• Description: Conflict firmware and EEPROM data version (MFP)
• Causes: Inconsistency between the MFP firmware version and the EEPROM data version.
• Remedy: Check the combination of the firmware.

• Code: A0-21
• Description: Conflict firmware and EEPROM data version (PCU)
• Causes: Inconsistency between the PCU firmware version and the EEPROM data version.
• Remedy: Check the combination of the firmware.

• Code: A0-22
• Description: Conflict firmware and EEPROM data version (SCU)
• Causes: Inconsistency between the SCU firmware version and the EEPROM data version.
• Remedy: Check the combination of the firmware.