The customer contacted physio-control to report that the service indicator is present and an event code is logged in the memory of their device.The event code logged in its memory is indicative of a device failure that could result in a partial loss of defibrillator output energy due to a loss of the negative portion of the biphasic output waveform, resulting in a monophasic shock.Additionally, the defibrillator output energy may be reduced by up to approximately 20% from the selected energy level.As a result, the wrong defibrillation therapy would be delivered, if it were necessary.There was no report of patient use associated with the reported event.
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