Livanova (b)(4) manufactures the s5 mast roller pump.The incident occurred in (b)(6).A livanova field service representative was dispatched to the facility to investigate.The service representative was able to confirm the reported issue and traced the failure to two defective boards.The technician replaced the motor control and motor end stage board to resolve the reported issue.Subsequent functional verification testing was completed without further issues and the unit was returned to service.The defective boards were returned to livanova (b)(4) for further investigation.During the evaluation of the boards the reported failure could be confirmed.It was possible to trace the failure back to a software issue on the motor control board.A review of the dhr did not identify any deviations or non-conformities relevant to the reported issue.
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