Manufacturing device history record review was not performed because the results of the complaint investigation do not indicate a problem with the manufacture of the device.No causes or potential causes of the customer's reported problem were found during the review of service and repair records.A product sample was received for evaluation.Visual and functional testing were performed.Visual inspection found wear and tear damaged enclosure, front cover, plate clip, line cord, pole clamp, an outdated printed circuit board (pcb) and power switch.Functional testing found even though the pcb was old, the device was able to be calibrated contrary to the customer complaint.Device passed all functional testing, unable to replicate the reported issue.No problem found.No action taken due to the age and condition of the device.It is deemed beyond economical repair and will be scrapped.This issue will be monitored for any increase in occurrence.If the occurrence of this issue increases significantly, additional investigative action will be taken.D5 and e4 are unknown, no information provided to date.
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