(b)(4).Fse followed up with the customer over the phone to address the reported event.Fse assisted customer with the reinstallation of the version 5.23 software already located in her tosoh provided tool box.No further issues were noted.No further action was required by field service.A 13 month complaint history review and service history review for similar complaints was performed for the serial number (b)(4) from 25apr2017 through aware date 25may2018.There were no similar complaints identified during the search period.The g8 variant analysis mode operator's manual version 3.0, under chapter 7- data management was reviewed.The g8 variant analysis mode operator's manual under chapter 7- data management states the following: 7.1 data management details the analyzer's system program and assay parameters are backed up by the internal battery.When a system program version has been upgraded or some problem has corrupted the system program, use the following procedure to reload the program and other data from the smart media socket (refer to pages 183-187 for detailed explanation).The most probable cause of the reported event is due to a power failure resulting in corrupted software.
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