Non-visual Checksum Error alert on section of modules, Ribbons fully seated, Power cycle MLC


  • Non-visual issue may fill an entire MLC section.
  • Verified all ribbon cables coming out of MLC and going into the first modules of each row were fully seated.
  • MLC itself is free of events or alerts in diagnostics.
  • MLC appears healthy in VLMS.

IDM Symptom

  • Checksum Error alert on modules in IDM.


  • MLC-405X
  • Billboard: DB-2000, DB-3000


  • MLC diagnostic information corrupt (false error).


  • Power cycle the MLC.

KB ID: DD3351490

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