(b)(4).A visual, functional, and dimensional inspection of the product involved in the complaint could not be conducted since the product was not returned.A dhr review could not be conducted since the lot number was not provided.A corrective action cannot be applied since it is not possible to identify the defect reported and to investigate its root cause, in order to perform a proper investigation it is necessary to evaluate the sample involved on the incident.Customer complaint cannot be confirmed based only on the information provided, to perform an investigation and determine the source of defect reported it is necessary to evaluate the sample involved in this complaint.However material from the production line was functionally tested and no issues were detected that can lead to this customer complaint.If the device sample becomes available this investigation will be updated with the evaluation results.
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