Code :

Code: 824
Description: Self-diagnostic Error: NVRAM The controller cannot recognize the standard NVRAM installed or detects that the NVRAM is defective.
Causes: • NVRAM damaged or abnormal • Backup battery has discharged • NVRAM socket damaged
Remedy: 1. Replace the NVRAM.

Code: 826
Description: Self-diagnostic Error: RTC/Optional NVRAM
Causes: [1501] [B] • An RTC device is recognized, and the difference between the RTC device and the CPU exceeds the defined limit. • No RTC device is recognized. • RTC defective • NVRAM without RTC installed • Backup battery discharged 1. Replace the NVRAM with another NVRAM with an RTC device. RTC not detected [15FF] [B] The RTC device is not detected. • NVRAM without RTC installed • Backup battery discharged 1. Replace the NVRAM with another NVRAM with an RTC device.
Remedy:

Code: 827
Description: Self-diagnostic Error: RAM
Causes: [0201] [B] Error is detected during a write/verify check for the standard RAM (SDRAM DIMM). • Loose connection • Defective SDRAM DIMM • Defective controller 1. Replace the SDRAM DIMM. 2. Replace the controller. Resident memory error [0202] [B] 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
Causes: [0101] [B] 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. • Defective ROM DIMM • Defective controller 1. Replace the ROM DIMM. 2. Replace the controller. ROMFS error [0104] [B] 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 1. Replace the ROM DIMM.
Remedy:

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

Code: 853
Description: Wireless LAN or Bluetooth card not detected at starting communication
The wireless LAN or Bluetooth card is not detected before communication is established, though the wireless LAN or Bluetooth board is detected.
Causes: Loose connection
Remedy: 1. Check the connection. 2. Insert the wireless LAN or Bluetooth card to its board.

Code: 854
Description: Wireless LAN or Bluetooth card not detected during operation
The wireless LAN or Bluetooth card is not detected after communication is established, though the wireless LAN or Bluetooth board is detected.
Causes: Loose connection
Remedy: 1. Check the connection. 2. Insert the wireless LAN or Bluetooth