• Code: 818
• Description: Watchdog timer error
  The watchdog timer detect the error even if system processing normally.
• Causes: • System program defective • Controller board defective • Optional board defective
• Remedy: 1. Turn the main switch off and on. 2. Replace controller firmware. 3. Replace controller board. 4. Replace the options.

• Code: 819
• Description: Fatal kernel error
  Due to a control error, a RAM overflow occurred during system processing. One of the following messages was displayed on the operation panel.
• Causes: • System program defective • Controller board defective • Optional board defective
• Remedy: Replace controller firmware

• Code: 820
• Description: Self-diagnostics error: CPU
  CPU error During the self-diagnostic, the controller CPU detects an error. There are 47 types of error code (0001 to 4005) depending on the cause of the error. The CPU detects an error and displays the specific error code with the program address where the error occurs.
• Causes: • System firmware problem • Defective controller
• Remedy: [0001] to [06FF] [0801] to [4005] CPU error During the self-diagnostic, the controller CPU detects an error. There are 47 types of error code (0001 to 4005) depending on the cause of the error. The CPU detects an error and displays the specific error code with the program address where the error occurs. • System firmware problem • Defective controller 1. Turn the main switch off and on. 2. Reinstall the controller system firmware. 3. Replace the controller. When the problem cannot be fixed with the above procedure, the following information displayed on the screen needs to be fed back to a technical support center. • SC code • Detailed error code • Program address [0702] [0709] [070A] CPU/Memory Error • System firmware problem • Defective RAM-DIMM • Defective controller 1. Reinstall the controller system software. 2. Replace the RAM-DIMM. 3. Replace the controller.

• Code: 821
• Description: Self-diagnostics error: ASIC
  ASIC error
• Causes: Defective ASIC device
• Remedy: [0B00] ASIC error The write-&-verify check error has occurred in the ASIC. Defective ASIC device Replace the controller. [0B06] ASIC detection error The I/O ASIC for system control is not detected. Defective ASIC Defective North Bridge and PCI I/F Replace the controller board. [0D05] Self-diagnosis error: ASIC The CPU checks if the ASIC timer works correctly compared with the CPU timer. If the ASIC timer does not function in the specified range, this SC code is displayed. System firmware problem Defective RAM-DIMM Defective controller 1. Reinstall the controller system firmware. 2. Replace the RAM-DIMM. 3. Replace the controller board. [50A1] Video bridge device (ASIC) error 1 The CPU does not detect the video bridge device. Defective I/F between the video bridge device and controller Replace the controller. [50A2] Video bridge device (ASIC) register error 1 The CPU detects the video bridge device, but detects error data from the video bridge device. Defective I/F between the video bridge device and controller Replace the controller.

• Code: 822
• Description: Self-diagnostic error: HDD
• Causes: [3003] Timeout error [3004] Command error - - When the main switch is turned on or starting the self-diagnostic, the HDD stays busy for the specified time or more. - - • Loose connection • Defective HDD • Defective controller
• Remedy: 1. Check that the HDD is correctly connected to the controller. 2. Replace the HDD. 3. Replace the controller.

• Code: 823
• Description: Self-diagnostic error: NIB
• Causes:
• Remedy: [6101] MAC address check sum error The result of the MAC address check sum does not match the check sum stored in ROM. [6104] PHY IC error The PHY IC on the controller cannot be correctly recognized. [6105] PHY IC loop-back error An error occurred during the loop-back test for the PHY IC on the controller. - Replace the controller.

• Code: 824
• Description: Self-diagnosis error: Standard NVRAM The controller cannot recognize the standard NVRAM installed or detects that the NVRAM is defective.
• Causes: • Loose connection • Defective standard NVRAM • Defective controller
• Remedy: 1. Check the standard NVRAM is firmly inserted into the socket. 2. Replace the NVRAM. 3. Replace the controller

• Code: 826
• Description: Self-diagnostic Error: RTC/optional NVRAM
  The one second counted by the RTC is different from the one second counted by the CPU on the controller.
• Causes: • Defective the RTC device
• Remedy: [1501] The one second counted by the RTC is different from the one second counted by the CPU on the controller. • Defective the RTC device Replace the RTC device. [15FF] The RTC device is not detected. • Defective RTC device • NVRAM without RTC installed • Discharged backup battery Replace the NVRAM with another NVRAM with an RTC device.