• Code: 840-00
• Description: EEPROM access error • During the I/O processing, a reading error occurred. The 3rd reading failure causes this SC code. • During the I/O processing, a writing error occurred.
• Causes: • Defective EEPROM
• Remedy:

• Code: 841-00
• Description: EEPROM read data error. Mirrored data of the EEPROM is different from the original data in EEPROM.
• Causes: Data in the EEPROM is overwritten for some reason.
• Remedy:

• Code: 842-01
• Description: Insufficient Nand-Flash blocks (threshold exceeded) At startup, or when machine returned from low power mode, the Nand-Flash status was read and judged that the number of unusable blocks had exceeded threshold, and then SCS generated the SC code.
• Causes: Number of unusable blocks exceeded threshold for Nand-Flash
• Remedy: Replace the controller board.

• Code: 842-02
• Description: Number of Nand-Flash block deletions exceeded At startup, or when the machined returned from low power mode, the Nand-Flash was read and judged that the number of deleted blocks had exceeded threshold, and then SCS generated this SC code.
• Causes: Number of blocks deleted exceeded threshold for Nand-Flash
• Remedy: Replace the controller board.

• Code: 853-00
• Description: Bluetooth device connection error The Bluetooth hardware (USB type) was connected after the machine was turned on.
• Causes: The Bluetooth hardware (USB type) was connected after the machine was turned on.
• Remedy: Always connect the Bluetooth device (USB type) before the machine is turned on.

• Code: 854-00
• Description: Bluetooth device disconnected The Bluetooth hardware (USB type) was disconnected after the machine was turned on.
• Causes: The Bluetooth hardware (USB type) was disconnected after the machine was turned on.
• Remedy: Never remove Bluetooth (USB type) after machine starts

• Code: 855-01
• Description: Wireless LAN board error (driver attachment failure) Wireless LAN board error (wireless LAN card: 802.11 is covered)
• Causes: • Defective wireless LAN board • Loose connection
• Remedy: • Cycle the main power off and on. • Replace wireless LAN board

• Code: 855-02
• Description: Wireless LAN board error (driver initialization failure) Wireless LAN board error (wireless LAN card: 802.11 is covered)
• Causes: • Defective wireless LAN board • Loose connection
• Remedy: • Cycle the main power off and on. • Replace wireless LAN board