• Code: E733-0021
• Description: There is an error in the communication with the printer
  Error in DDI-P communication
• Remedy: 1. Check the connection with the printer. 2. Check the power supply of the printer (to see if initialization takes place at startup). 3. Replace the DC controller or the main board.

• Code: E740-0002
• Description: There is an error on the Ether board.
  The MAC address is illegal.
• Remedy: Replace the LAN card.

• Code: E743-0000
• Description: There is an error in the DDI communication.
  An SCI error has occurred. The received data is faulty. A reception timeout condition has occurred. An SEQ timeout error has occurred.
• Remedy: Disconnect and then connect the flexible cable used to connect the reader unit and the printer unit. Replace the following as necessary: flexible cable, reader controller PCB, main controller PCB.

• Code: E744-0001
• Description: There is an error in the language file/boot ROM.
  The version of the language file on the HDD and that of the bootable do not match.
• Remedy: Download a language file of the correct version.

• Code: E744-0002
• Description: There is an error in the language file/boot ROM.
  The size of the language file on the HDD is too large.
• Remedy: Download a language file of the correct version.

• Code: E744-0003
• Description: There is an error in the language file/boot ROM.
  There is no language file on the HDD indicated by config.txt for a switchover.
• Remedy: Download a language file of the correct version.

• Code: E744-0004
• Description: There is an error in the language file/boot ROM.
  An attempt to switchover to a language on the HDD fails.
• Remedy: Download a language file of the correct version.

• Code: E744-1000
• Description: There is an error in the language file/boot ROM.
  The boot ROM that is mounted is of the wrong type
• Remedy: Replace the boot ROM with one of the model in question.