The reported complaint of the autopulse platform (sn (b)(4) displayed a red light on the control panel and blank lcd was not confirmed through review of the archive and during functional testing.There were no device deficiencies found during the evaluation of the returned platform that could have caused or contributed to the reported complaint.The probable root cause for the reported complaint could be due to the temporary presence of moisture in the platform caused by the user's decontamination process.During the visual inspection, a crack on the front enclosure was observed, unrelated to the reported complaint.This type of physical damage found during visual inspection is due to mishandling.The damaged front enclosure was replaced to remedy this issue.Unrelated to the reported complaint, the archive data review showed the occurrence of the user advisory (ua) 45 (driveshaft not at "home" position after power-on/restart) and user advisory (ua) 20 (position out of range) error messages on the last date the platform was powered on, (b)(6) 2020.All these error messages were cleared by the customer.User advisory (ua) 45 is the clearable error message.The user advisory (ua) 45 alerts the operator that the autopulse driveshaft is not at its home position when the platform was powered on.This user advisory will persist until the driveshaft is returned to its home position.Per the autopulse user guide instruction, to clear user advisory (ua) 45, the operator needs to pull up the lifeband until the chest bands are fully extended.This action will move the driveshaft to its home position.User advisory (ua) 20 error message was due to the encoder driveshaft not being within the normally acceptable range of positions.Typically, if the user advisory (ua) 45 error message is not resolved properly, it leads to user advisory (ua) 20 because the driveshaft is not restored at the home position.To remedy the issue, the driveshaft needs to be rotated back to the home position.The autopulse platform passed the initial functional testing without any fault or error.However, the load cell characterization test revealed that the load cell module 1 is defective, probably as a result of damage sustained by user mishandling such as a drop as indicated by the damaged front enclosure.The defective load cell was replaced to address the issue.Following service, the autopulse platform passed the run_in test using the 95% large resuscitation testing fixture (lrtf) with good known test batteries, until discharged without any fault or error.The autopulse has passed all the testing and meets all required specifications.
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