The device was returned to zoll medical corporation and the customer's report was observed upon power up.However, the report could not be duplicated.The device was put through extensive testing including bench handling while switching between modes, power cycling, and functional stress testing without duplicating the report.The control board was replaced as a precaution and scrapped.The device was recertified and returned to the customer.Analysis of reports of this type has not identified an increase in trend.
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