Head error was reported.The field service technician (fst) was sent for further investigation.According to service order #43525771 dated on 2020-12-17 tacho board was replaced with new one.Reseted both motor control, pump control pc connections,tested machine for 1 hour found it is working properly.Machine has been handed over to the customer in good working condition.A similar complaint (705009545) with the reported failure was already investigated.According to the life cycle engineering report# lce3993 dated on 2019-08-26 the most probable root cause is a broken wiring of the tachoboard.Thus the reported failure could be confirmed.The reported failure did not happen during patient treatment.The hl20 in question was responsible for this complaint/event.The review of the non-conformities during the period of 2016-03-09 to 2020-11-26 does not show any non-conformity in regard to the reported product and failure.There is no indication that manufacturing issues occurred during this time, thus production related influences can be excluded.The occurrence rate was calculated for the reported issue and it was determined that this is not a systemic issue.Therefore, no remedial action is required.The occurrence rate related to the reported issue is currently being monitored as part of maquet cardiopulmonary¿s trending program and additional investigations or corrections will be implemented in case of adverse trending.
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