The device was returned to zoll medical corporation for evaluation.The customer's reports were not replicated or confirmed.The device was put through extensive testing including evaluation of button/keypad responses, full functional evaluation using the customer's returned accessories, defib cycling, and bench handling without duplicating the reports.Review of the device log confirms the device was charged seven times, with each charge delivered successfully.It is important to note the x series platform does not have an automatic discharge feature and requires user intervention to deliver energy.There were no button shorts or indications of a keypad malfunction in the log or as a result of a self test which tests button functionality at power on.The device was recertified and returned to the customer.No trend is associated with reports of this type.
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