Investigation summary: since no samples displaying the condition reported are available for examination, we were unable to fully investigate this incident.A device history record review was completed with zero defects found.No quality notifications were written for this batch, nor for the associated assembly batches.Investigation conclusion: based on no sample, the investigation concluded, bd was not able to verify the indicated failure.This is the 1st complaint for lot # 9288653 for this type of defect or symptom.There was no documentation for this type of defect during the entire production run of this batch.Root cause description: no root cause can be determined as no samples were received.Rationale: capa not required at this time.
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