• Code: 826
• Description: Self-diagnostic Error: NVRAM/Optional NVRAM
  The NVRAM or optional NVRAM returned an error during the self-diagnostic test.
• Causes: • Replace the NVRAM on the controller board

• Code: 827
• Description: Self-diagnostic Error: RAM
  The resident RAM returned a verify error during the self-diagnostic test.
• Causes: • Update the controller firmware again • Replace the 256 MB memory

• Code: 828
• Description: Self-diagnostic Error: ROM
  The resident read-only memory returned an error during the self-diagnostic test.
• Causes: • Controller board defective • Update the controller firmware

• Code: 829
• Description: Self-diagnostic Error: Optional RAM
  The optional RAM returned an error during the self-diagnostic test.
• Causes: • Replace the optional memory. • Controller board defective

• Code: 838
• Description: Self-diagnostic Error: Clock Generator
  A verify error occurred when setting data was read from the clock generator via the I2C bus.
• Causes: • Replace the controller board

• Code: 840
• Description: EEPROM error 1
  During input/output with the EEPROM on the controller board, one of the following errors occurred: • A read error occurred and continued after 3 retries. • A write error occurred.
• Causes: • EEPROM defective; replace the controller board • EEPROM has reached the end of its service life

• Code: 841
• Description: EEPROM error 2
  The values read from the three areas during the mirroring check phase did not match. The data is being written into the three areas differently.
• Causes: • EEPROM on the control board defective, or has reached the end of its service life. Replace the controller board.

• Code: 850
• Description: Network I/F Abnormal
  NIB interface error.
• Causes: • Controller board defective (NIB function built into the controller board. Replace the controller board.