Device evaluation: both tamper seals were intact.Cracked left plunger case screw post.Primary audible alarm bgnd test observed in event history log.Power up process, audio test, occlusion test were performed and the reported issue could not be duplicated.Adc (analog-to-digital converter) counts were within specification.No repair needed for reported problem since no problem was found.Product is beyond a year from manufacture date and there was no indication of a manufacturing defect during the investigation, so a device history record (dhr) review was not performed.Service history review identified this device has not been in for service previously.
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