G4: 29oct2020, b4: 01nov2020.Philips service engineer (se) was dispatched to the customer site and was unable to confirm the reported issue.The se was not able to duplicate the reported error.A central processing unit printed circuit board assembly (cpu pcba) equipped with watchdog timer was replaced for preventative action.A cpu pcba (central processing unit, printed circuit board assembly) was returned for analysis.A visual inspection of the returned component was performed, no notable conditions were found.The returned component was installed into a test ventilator for analysis.An investigation was performed and the technician reported that no fault was found and the complaint cannot be verified.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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