As reported, the autopulse platform (serial #(b)(4)) displayed a user advisory - "(ua) 07" (discrepancy between load 1 and load 2 too large) error message.It is unknown where the problem occurred.However, patient use information was requested, but no additional information was provided.
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The reported complaint that "the autopulse platform (s/n (b)(6) displayed user advisory (ua)07 (discrepancy between load 1 and load 2 too large) upon powering up" was confirmed during functional testing and based on the review of the archive data.The root cause of the ua07 was the defective load cell module 2, likely attributed to mishandling such as a drop or a defective component.Upon visual inspection, no physical damage was observed.A review of the archive data was performed and showed user advisory (ua) 07 (discrepancy between load 1 and load 2 too large) around the customer's reported event date; thus, confirming the reported complaint.Also, unrelated to the reported complaint.In addition, unrelated to the reported complaint, the archive data indicated ua12 (lifeband not present) error message around the reported event date.The observed error message was cleared based on the archive and was not reproduced during functional testing.User advisory is a clearable error message and is designed into the platform to alert the operator that autopulse has detected one of several conditions.Per the battery hangtag - advisory codes description and action, user advisory 12 is an indication that the autopulse has detected that the lifeband is not properly installed.The recommended actions to take for this type of user advisory are: ensure that the band clip (underneath the device) is properly seated in the drive shaft can freely rotate after insertion.Functional testing failed due to the ua07 advisory message displayed upon powering up the platform; thus, confirming the reported complaint.Load cell characterization results confirmed load cell module 2 was defective, and it was replaced to remedy the fault.Following 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.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 platform with serial number (b)(6).
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