• Code: SC 818
• Description: Watch-dog error While the system program is running, other processes do not operate at all.
• Causes: • Defective controller • Software error
• Remedy: 1. Turn the main switch off and on. 2. Replace the controller. 3. See NOTE 1 at the end of the SC table

• Code: SC 819
• Description: Fatal error [696E] Process error System completely down [766D] Memory error Unexpected system memory size
• Causes: • Defective RAM DIMM • Defective ROM DIMM • Defective controller • Software error
• Remedy: 1. Turn the main switch off and on. 2. Check and/or replace the RAM DIMM. 3. Check and/or replace the ROM DIMM. 4. Replace the controller. 5. See NOTE at the end of the SC table.

• Code: SC 821
• Description: 0D05] Self-diagnosis error: ASIC The CPU checks if the ASIC timer works properly compared with the CPU timer. If the ASIC timer does not function in the specified range, this SC code is displayed.
• Causes: • System firmware problem • Defective RAM-DIMM • Defective controller
• Remedy: 1. Turn the main switch off and on. 2. Reinstall the controller system firmware. 3. Replace the RAM-DIMM. 4. Replace the controller board.

• Code: SC 823
• Description: Self-diagnostic error: NIB [XXXX]: Detailed error code [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 properly recognized. [6105] PHY IC loopback error An error occurred during the loop-back test for the PHY IC on the controller.
• Causes: • Defective controller
• Remedy: 1. Turn the main switch off and on. 2. Replace the controller.

• Code: SC 824
• Description: [1401] 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. Turn the main switch off and on. 2. Check the standard NVRAM is firmly inserted into the socket. 3. Replace the NVRAM. 4. Replace the controller.

• Code: SC 826
• Description: Self-diagnostic Error: RTC/ Optional NVRAM • An RTC device is recognized, and the difference between the RTC device and the CPU exceeds the defined limit. • No RTC device is recognized.
• Causes: • RTC defective • NVRAM without RTC installed • Backup battery discharged
• Remedy: 1. Turn the main switch off and on. 2. Replace the NVRAM with another NVRAM with an RTC device.

• Code: SC 827
• Description: Self-diagnostic error: Standard SRAM DIMM [XXXX]: Detailed error code [0201] Verification error Error detected during a write/verify check for the standard RAM (SRAM DIMM).
• Causes: • Loose connection • Defective SRAM DIMM • Defective controller
• Remedy: 1. Turn the main switch off and on. 2. Replace the SRAM DIMM. 3. Replace the controller.

• Code: SC 828
• Description: Self-diagnostic error : ROM [XXXX]: Detailed error code [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. [0104] Check sum error 2 All areas of the ROM DIMM are checked. If the check sum of all programs stored in the ROM DIMM is incorrect, this SC code is displayed. [0105] ROM error The ROM DIMM is not of the recognized type.
• Causes: • Defective ROM DIMM • Defective controller
• Remedy: 1. Turn the main switch on and off. 2. Replace the ROM DIMM 3. Replace the controller.