The autopulse platform (s/n (b)(4)) was returned to zoll (b)(4) on 12/08/2015.Investigation results as follows: a visual inspection of the returned autopulse platform was performed and a 2 inches cut was noted on the load plate cover.There were no damages observed to the housing.A review of the archive was performed and several user advisories (ua) 7 were noted between 11/2/2015 and 11/30/2015.However there was no activity recorded on the date of event, (b)(6) 2015.The platform was functional tested and the autopulse exhibited user advisor (ua) 7 (discrepancy between load 1 and load 2 too large) upon power up thus confirming the reported complaint.Further investigation indicated that one of the load cells was defective.Replacing the single load cell remedied the ua7.Based on the investigation, load plate cover and a single load cell was replaced.In summary, the customer's reported complaint of the platform exhibiting ua 7 was confirmed during functional testing which was attributed to a defective load cell.After replacement of the parts identified during investigation, the platform passed all final functional testing criteria.
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