The autopulse platform in complaint was returned to zoll on (b)(4) 2015 for investigation.A visual inspection was performed and the load plate cover was found damaged.It was observed that the load plate cover have holes that would affect the sealing.Furthermore, fluid was observed to have ingress into the platform and corroded the metal layer of the top cover.In addition, both front and bottom covers were observed cracked at the screw holes area.The physical damage found is characteristic of use handling.A review of the archive was performed and a user advisor (ua) 7 (discrepancy between load 1 and load 2 too large) was observed.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.The reported ua 2 could not be duplicated and was not observed in the archive date or upon powering up the platform.It was found that the load cell #2 was not functioning properly.In addition, the load cell characterization testing also confirmed that the load cell module was not working properly.Based on the investigation, the parts identified for replacement were the top, front and bottom covers, and the load cell module 2.In summary, the reported complaint of the platform displaying user advisory 2 upon power up was not confirmed based on the archive review and was not confirmed during functional testing.Unrelated to the reported complaint, the physical damage to the platform was attributed to user handling.The ua07 error message observed during functional test is unrelated to the reported complaint.The load cell module 2 was replaced to remedy the ua07.Following service, including replacement of the top, front and bottom covers, and the load cell module 2, the platform passed all testing criteria.
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