• Code: 824-1401
• Description: Self-diagnostic Error: NVRAM
  The controller cannot recognize the standard NVRAM installed or detects that the NVRAM is defective.
• Causes: • Loose connection
  • Defective standard NVRAM
  • Defective controller

• Code: 826
• Description: Self-diagnostic Error: RTC/Optional NVRAM
  [1501]: Clock error
  [15FF]: RTC not detected
• Causes: • RTC defective
  • NVRAM without RTC installed
  • Backup battery discharged

• Code: 827
• Description: Self-diagnostic Error: RAM
  [0201: ]Verification error
  [0202]: Resident memory error
• Causes: • Loose connection
  • Defective SDRAM DIMM
  • Defective controller

• Code: 828
• Description: Self-diagnostic Error: ROM
  [0101]: 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.
• Causes: • Defective ROM DIMM
  • Defective controller

• Code: 829
• Description: Self-diagnostic Error: Optional RAM
  Verify error for optional RAM.
  [0301] Verification error (Slot 1)
  [0302] Composition error (Slot 1)
• Causes: • Make sure that the resident RAM is installed in the correct slot.
  • Make sure the optional RAM is installed in the correct slot (Slot 0)

• Code: 835
• Description: Self-diagnostic error: Centronic device
  [1102] Loopback connector is connected but check results in an error.
  [110C] Loopback connector is connected but check results in an error.
  [1120] Centronic loopback connector is not connected for detailed self-diagnostic test.
• Causes: • IEEE1284 connector error
  • Centronic loopback connector defective

• Code: 838
• Description: Self-diagnostic Error: Clock Generator
  [2701] A verify error occurred when setting data was read from the clock generator via the I2C bus.
• Causes: • Defective clock generator
  • Defective I2C bus
  • Defective I2C port on the CPU

• Code: 839
• Description: USB NAND Flash ROM error
  [9101] The ID of the USB NAND Flash ROM cannot be read.
  [9110] The USB NAND Flash ROM is disconnected.
• Causes: • Defective controller board