• Code: 818
• Description: [00FF] Watch-dog error [D] While the system program is running, other processes do not operate at all.
• Causes: • Defective controller
• Remedy: 1. Replace the controller if it occurs frequently.

• Code: 819
• Description: [0696e] Kernel stop: Process error System completely down
• Causes: • Defective RAM DIMM • Defective SD card in slot 1 • Defective controller • Software error
• Remedy: 1. Check and/or replace the RAM DIMM. 2. Check and/or replace the SD card in slot 1. 3. Replace the controller. 4. See NOTE at the end of the SC table.

• Code: 819
• Description: [0766d] Kernel stop: VM full error Unexpected system memory size
• Causes: • Defective RAM DIMM • Defective SD card in slot 1 • Defective controller • Software error
• Remedy: 1. Check and/or replace the RAM DIMM. 2. Check and/or replace the SD card in slot 1. 3. Replace the controller. 4. See .NOTE. at the end of the SC table.

• Code: 819
• Description: [4361] Kernel stop: Cache error Cache error in the CPU
• Causes: • Defective CPU
• Remedy: 1. Replace the controller board.

• Code: 819
• Description: [----] Kernel stop: The others 819 [D] Error in OS
• Causes: • Defective memory • Defective flash memory • Defective CPU
• Remedy: 1. Replace the controller board.

• Code: 820
• Description: [0001-0015] [000A-000D] Self-diagnostic error. CPU: Detailed error code During the boot monitor program and selfdiagnostic, any exception or cut-in are not supposed to happen. If these happen, it is defined as SC.
• Causes: • Defective CPU device • Defective boot monitor program or self-diagnostic program
• Remedy: 1. Replace the controller board. 2. Reinstall the system firmware.

• Code: 820
• Description: [00FF] Self-diagnostic error. CPU: Detailed error code Cache access error in the CPU
• Causes: • Defective CPU • Defective local bus
• Remedy: 1. Turn the main switch off and on. 2. Reinstall the system program. 3. Replace the controller board.

• Code: 820
• Description: [0601, 0602, 0605, 0606, 0607, 0609] Self-diagnostic error. CPU: Detailed error code Exceptional command does not operate even though it is executed on purpose.
• Causes: • Defective CPU devices
• Remedy: 1. Replace the controller board