Code :

Code: 820
Description: Self-diagnostics error: CPU [XXXX]: Detailed error code
Causes: [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 [0701] to [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.
Remedy:

Code: 821
Description: Self-diagnostics error: ASIC [XXXX]: Detailed error code
Causes: [0B00] ASIC error The write-&-verify check error has occurred in the ASIC. • Defective ASIC device 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 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 [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
Remedy:

Code: 822
Description: Self-diagnostic error: HDD [XXXX]: Detailed error code
Causes: [3003] Check performed only when HDD is installed: • HDD device busy for over 31 s. • After a diagnostic command is set for the HDD, but the device remains busy for over 6 s. • HDD defective • HDD harness disconnected, defective [3004] No response to the self-diagnostic command from the ASIC to the HDDs. • HDD defective
Remedy:

Code: 823
Description: Self-diagnostic error: NIB [XXXX]: Detailed error code
Causes: [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.
Remedy:

Code: 824
Description: Self-diagnostic error : NVRAM NVRAM device does not exist, NVRAM device is damaged, or NVRAM socket damaged.
Causes: • NVRAM defective • Controller board defective • NVRAM backup battery exhausted • NVRAM socket damaged
Remedy:

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

Code: 827
Description: Self-diagnostic error: Standard SDRAM DIMM [XXXX]: Detailed error code
Causes: [0201] Verification error Error detected during a write/verify check for the standard RAM (SDRAM DIMM). • Loose connection • Defective SDRAM DIMM • Defective controller [0202] Resident memory error The SPD values in all RAM DIMM are incorrect or unreadable. • Defective RAM DIMM • Defective SPD ROM on RAM DIMM • Defective 12C bus Replace the RAM DIMM.
Remedy:

Code: 828
Description: Self-diagnostic error: ROM [XXXX]: Detailed error code
Causes: [0101] Check sum error 1 • The boot monitor and OS program stored in the ROM DIMM is checked. If the check sum of the program is incorrect, this SC code is displayed. 1. Replace the controller board.
Remedy: