• Code: E227-0002
• Description: The reader unit power supply is faulty.
  At the start of a job, the 24-V port is off.
• Remedy: Disconnect and then connect the power supply harness connector. Replace the power supply.

• Code: E227-0003
• Description: The reader unit power supply is faulty.
  At the end of a job, the 24-V port is off.
• Remedy: Disconnect and then connect the power supply harness connector. Replace the power supply.

• Code: E227-0004
• Description: The reader unit power supply is faulty.
  When a load is being driven, the 24-V port is off.
• Remedy: Disconnect and then connect the power supply harness. Replace the power supply.

• Code: E248-0000
• Description: The backup memory is faulty.
  [Cause] A check error has occurred on the backup SRAM board. [Location] bottom ROM [Timing of Detection] once when the boot ROM is started up
• Remedy: 1. Check the presence/absence of a backup SRAM PCB. 2. Disconnect and then connect the backup SRAM PCB. 3. Replace the backup SRAM PCB with a new one.

• Code: E248-0001
• Description: The backup memory is faulty.
  An error has occurred at power-on.
• Remedy: Replace the reader controller PCB.

• Code: E248-0002
• Description: The backup memory is faulty.
  An error has occurred during a write operation.
• Remedy: Replace the reader controller PCB.

• Code: E248-0003
• Description: The backup memory is faulty.
  An error has occurred during a read operation following a write operation.
• Remedy: Replace the reader controller PCB.

• Code: E261-0000
• Description: The zero-cross signal is faulty.
  When the relay is on, the zero-cross signal is not detected for 500 msec or more.
• Remedy: Replace the AC driver PCB. Replace the DC controller PCB.