The reported event was confirmed through evaluation and archive data review of the autopulse platform ((b)(4)).The root cause is due to a defective load cell.The archive data was reviewed and contained multiple ua 7 error message on the (b)(6) 2018 and not on the reported event date of (b)(6) 2018, thus confirming the reported event.Evaluation of the platform during initial power up, revealed a user advisory (ua) 7 (discrepancy between load 1 and load 2 too large) error message on the user control panel.A load characterization check was performed and identified a defective load cell.Further functional testing was performed by replacing a good known load cell, this cleared the ua 7 error message; however, the platform displayed a user advisory (ua) 12 (lifeband not present) error message, this is due to an improper alignment of the belt switch cable assembly and not related to the ua 7 error message.Upon adjustment of the belt switch cable assembly, the platform passed all testing criteria and met all required specifications.Upon customer approval, replacement of the load cell will be performed.The autopulse platform is a reusable device and was manufactured on 10 jun 2015.Historical complaints were reviewed for service information related to the reported complaint and no similar complaint was reported for the autopulse platform with serial number (b)(4).
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As reported, the autopulse platform ((b)(4)) displayed ua 7 (discrepancy between load 1 and load 2 too large).Unspecified troubleshooting was performed; however, this did not resolve the issue.Ua 7 fault can't be cleared by the user.No known impact or patient consequence reported.
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