• Code: 748-2021-00
• Description: Main Controller PCB access error
• Causes: Main controller board access errors
• Remedy: Check/replace the Main Controller PCB

• Code: 748-2023-00
• Description: Main Controller PCB access error
• Causes: Main controller board access errors
• Remedy: Check/replace the Main Controller PCB

• Code: 748-2024-00
• Description: Main Controller PCB access error
• Causes: Main controller board access errors
• Remedy: Check/replace the Main Controller PCB

• Code: 748-2025-00
• Description: Main Controller PCB access error
• Causes: Main controller board access errors
• Remedy: [Related parts] R1.00 - Bypass PCB - Main Controller PCB [Remedy] Check/replace the related connector and parts.

• Code: 748-2026-00
• Description: Main Controller PCB access error
• Causes: Main controller board access errors
• Remedy: Check/replace the Main Controller PCB

• Code: 748-4910-00
• Description: Main Controller PCB access error
• Causes: Main controller board access errors
• Remedy: Check/replace the Main Controller PCB

• Code: 748-9000-00
• Description: System error
• Causes: System error
• Remedy: Contact to the sales company.

• Code: 749-0006-00
• Description: Error due to change in hardware configuration
• Causes: Change in option configuration could not be detected.
• Remedy: [Remedy] Turn OFF and then ON the main power. [Reference] Options are recognized again by turning OFF and then ON the main power. In the case of changing option configuration, disconnect the power plug or turn OFF the breaker after turning OFF the main power so that an error does not occur.