The reported complaint of "(sn: (b)(4)) displayed user advisory (ua) 07 (discrepancy between load 1 and load 2 too large) error message" was confirmed during the functional testing and based on the archive data review.The root cause for the occurrence of ua07 error was due to defective load cells as a result of damage sustained by user mishandling and/or aging of the device.The autopulse platform is a reusable device and was manufactured in march 2010 and is ten years old, beyond its expected service life of 5 years.Visual inspection of the returned platform was performed, and no issues were observed.Review of the archive data showed multiple user advisory (ua) 07 (discrepancy between load 1 and load 2 too large) error messages; thus, confirming the reported complaint.During functional testing, user advisory (ua) 07 error message displayed upon power up the device; thus, confirming the reported complaint.In addition, the load characterization check was performed and verified that both load cells were out of specification.The load cells were replaced to address the user advisory (ua) 07 error.Following the service, the autopulse was subjected to the run-in test using the 95% patient large resuscitation test fixture (lrtf) with good known test batteries until discharged without any fault or error.The brake gap inspection was performed and verified the brake gap was within the specification.Load cell characterization test was performed and confirmed both cell modules are functioning within the specification.Historical complaints were reviewed for service information related to the reported complaint, and there was no previous history of complaint reported for autopulse with serial number (b)(4).
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