• 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]: Clock error • 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. B [15FF]: RTC not detected 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 Verification error 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. [0202] B 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
• Causes: [0101] B Boost lap code error 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. [0104] B ROMFS error 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: [0401] B Verification error (Slot 1) 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. [0402] B Composition error (Slot 1) 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: 838
• Description: Self-diagnostic Error: Clock Generator
  Verify error occurred when setting data was read from the clock generator via the I2C bus
• Causes: • Clock generator abnormal • I2C bus abnormal • CPU port for the I2C bus abnormal
• Remedy:

• Code: 851
• Description: IEEE1394 I/F abnormal
  The IEEE1394 interface cannot be used, due to a driver error.
• Causes: • IEEE1394 interface board defective • Defective controller board
• Remedy:

• Code: 853
• Description: Wireless card startup error
  The machine starts up. - The IEEE802 11b card connection board is recognized - The wireless LAN card or bluetooth card is not recognized.
• Causes: • Loose connection between the card and the connection board
• Remedy: