Additional information is provided in sections h.6 and h.10.A non-conformance based review of the batch/lot/serial number was performed and did not reveal any potential contributing factors to the reported complaint.A manufacturing device history record (dhr) review was performed prior to product release to ensure that the product was manufactured in compliance with the device master record.Based on the assessment, the product met release criteria.A review for complaints reported against this lot/batch/serial number was performed.A potentially relevant complaint was found and reviewed as part of this investigation.The customer reported that the laser sometimes does not work but the root cause was determined to be inconclusive ¿ no problem found.Service history was reviewed for the system.A service record relevant to the reported complaint was found and reviewed to address the reported event.Manufacturer representative performed an on-site assessment and was unable to confirm or replicate the reported event.As a preventative measure, assy,fiber,50mcrn of the system was replaced then found the system to meet manufacturer specifications per service test procedure (stp).Based on the information available, the customer reported event cannot be confirmed.Based on the information obtained, the root cause of the reported event is inconclusive.The root cause of the reported event is inconclusive.Therefore, no further actions will be pursued at this time.Quality assurance has reviewed this complaint and will continue to monitor data for evidence of adverse trending and take further action, as appropriate.Receipt of complaint sample or additional information pertinent to this complaint will result in re-evaluation of the complaint investigation.The manufacturer internal reference number is: (b)(4).
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