The device was received for evaluation.An external/internal inspection was performed.The reported problem was identified during the event history log review.The event history log review showed no keystrokes, programming, or use related events that indicated and/or contributed to the reported issue.A service history review revealed no indication that the parts replaced during servicing caused or contributed to the reported event.Returned instrument testing evaluation (rite) functional and electrical testing were performed with no issues.The sample analysis revealed no device malfunction that could have caused or contributed to the reported problem.The reported problem was verified from the event log.An assignable cause could not be determined.Should additional relevant information become available, a supplemental report will be submitted.
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