• Code: 824
• Description: Self-diagnosis error: Standard NVRAM
  The controller cannot recognize the standard NVRAM installed or detects that the NVRAM is defective.lure
• 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 RTC device is not detected.
• Causes: • RTC defective • NVRAM without RTC installed • Backup battery discharged
• Remedy: 1. Replace the NVRAM with another NVRAM with an RTC device.

• 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 1. Turn the main switch off and on. 2. Replace the SDRAM DIMM. 3. Replace the 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 1. 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. [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. - - • Defective ROM DIMM • Defective controller - - 1. Turn the main switch on and off. 2. Replace the ROM DIMM 3. Replace the controller.
• Remedy:

• Code: 829
• Description: Self-diagnosis error: optional RAM
• Causes: [0401] Verification error (Slot 1) The data stored in the optional RAM in Slot 1 does not match the data when reading. [0402] Composition error (Slot 1) The result of checking the composition data of the optional RAM in Slot 1 on the controller is incorrect. - - • Not specified RAM DIMM installed • Defective RAM DIMM - - 1. Turn the main switch off and on. 2. Replace the RAM DIMM. 3. Replace the controller board.
• Remedy:

• Code: 851
• Description: IEEE1394 interface error
  The 1394 interface is unusable.
• Causes: • Defective IEEE1394 • Defective controller.
• Remedy: 1. Turn the main switch off and on. 2. Replace the IEEE1394 interface board. 3. Replace the controller.

• Code: 853
• Description: Wireless LAN card not detected
  The wireless LAN card is not detected before communication is established, though the wireless LAN board is detected.
• Causes: • Loose connection
• Remedy: 1. Check the connection.

• Code: 854
• Description: Wireless LAN/Bluetooth card not detected
  The wireless LAN/Bluetooth card is not detected after communication is established, but the wireless LAN board is detected.
• Causes: • Loose connection
• Remedy: 1. Check the connection.