G4: 23jun2020 b4: (b)(6)2020.User interface (ui) assembly was returned to failure investigation for analysis.Visual inspection of the user interface (ui) revealed no evidence of damage or contamination.A failure investigation (fi) technician verified the assembly was within specifications, the fi technician installed the ui into a fi ventilator and tested the device.They were not able to duplicate the reported failure of touchscreen unresponsive.The determination not could be made that the device failed to meet specifications, the user interface functioned as it should.No fault found with this assembly.Submission of a report does not constitute an admission that medical personnel, user facility, importer, distributor, manufacturer, or product caused or contributed to the event.
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