The returned device was evaluated.During evaluation, an "off patient" error message displayed when masimo dci-dc3 sensor or masimo set tester are connected to the device and no measurements was obtainable.Keypad power button and alarm silence button are both functional, but all other keypad buttons did not.Speakers was able to emit tone when device powered on; however, alarms could not be tested due to measurements could not be obtained and the keypad failure prevents accessing alarm menu.Internal inspection revealed, both speakers are functioning as designed and the customer's complaint in regard to "no audible alarm sound" could not be duplicated.The device sensor flex cable was damaged; which caused the device to not able to get measurements.Foreign contaminant inside the keypad resulting in keypad failure.A service history record review reveals that this unit was in the field for over two (2) years with no previous reported issues prior to this reported event.
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