Visual inspection of external components found no evidence of damage or abnormalities.Visual inspection of internal components found cosmetic damage to two capacitors on the power management board.The damaged capacitors is unrelated to the customer reported issue.The driver passed all incoming functional testing.Review of patient data file confirmed the system malfunction alarm.Additional operational testing could not replicate the alarm; however, based upon alarm data review, the alarm recorded as a result of the driver key switch operation while in use.To troubleshoot, the key switch was turned approximately one quarter of the way to the off position and released which returned it to the on position.This test replicated the system malfunction alarm.Because it is unknown if the key was left in the key switch while the driver was in operation, it is not possible to confirm the root cause of the customer reported issue of a system malfunction alarm.However, the root cause, based upon patient data file review, is most likely an unintended rotation of the key in the key switch while the driver was in use.Product labeling instructs the user to remove the key and store it in a designated location during operation to prevent the driver from being turned off while in use.Investigation found no evidence of a device malfunction.This issue will be monitored and trended as part of the customer complaint process.Syncardia has completed its evaluation and is closing this file.If new or additional information is received in the future, syncardia will file a follow-up mdr.(b)(4) follow-up report 1.
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