Investigation results for the returned platform as follows: visual inspection of the returned platform shows no physical damage to the platform.However, it was observed that the pem nut screws were missing.The missing screws found during visual inspection are not related to the reported event of a user advisory (ua) 45 (not at "home" position after power-on/restart) fault.The missing screws appear to have been caused by normal wear and tear (autopulse manufactured in june of 2005).A review of the autopulse archive was performed and the reported complaint of a ua 45 fault was confirmed.The archive data shows that multiple ua 45 faults occurred on the reported event date of (b)(6) 2014.Functional testing was performed and the reported issue of a ua 45 fault was not confirmed.The autopulse platform passed testing.Based on the investigation, the parts identified for replacement were the pem nut screws.In summary, the reported complaint of a ua 45 fault was confirmed based on the archive review but could not be reproduced during functional testing.The root cause for the ua 45 fault could not be determined.Per the autopulse® resuscitation system model 100 user guide (pn: 12555-001), if the driveshaft is not at its home position when the autopulse is powered on, a user advisory (45) will occur.This user advisory will persist until the driveshaft is returned to its home position.Upon replacement of the screws, the platform was re-evaluated through functional testing and passed all testing criteria.
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