• Code: 958.xx
• Description: Service NAND Failure
  Printer has performed more than 100 “shift and reflash” operations as a result of ECC bit corrections.
• Remedy:

• Code: 959.01
• Description: Service Invalid Firmware
  Controller verification failure of system boot code
• Remedy: Update firmware or replace the controller board

• Code: 959.02
• Description: Service Invalid Firmware
  Failure to authenticate Signature Verification Code.
• Remedy: Update firmware or replace the controller board

• Code: 959.03
• Description: Service Invalid Firmware
  Signature verification Code failure to authenticate a code partition.
• Remedy: Update firmware or replace the controller board

• Code: 959.04
• Description: Service Invalid Firmware
  Jump to unverified address.
• Remedy: Update firmware or replace the controller board

• Code: 959.05
• Description: Service Invalid Firmware
  Unknown Boot Failure.Update firmware or replace the controllerboard.
• Remedy: Update firmware or replace the controller board

• Code: 959.20
• Description: Service System Board
  System hardware failure.Replace the controller board.
• Remedy: Replace the controller board.

• Code: 959.21
• Description: Service System Board
  System did not respond to command request.Replace the controller board.
• Remedy: Replace the controller board.