The unit was sent to repair depot in mahwah.Work performed on 2019-05-11.Results of service order report(b)(4) : "cardio help loaner repair, complete pm, full functional, calibration and safety tests as per service manual.Unit passed all tests note: reference trackwise complaint # (b)(4)" arterial bubble detect " replaced the sensor panel with new sn# 6041.See so# 42997086 for all parts and test measurements." a probable root cause could be determined in another complaint (refer to tw#168965).Results: "momentary distortions in the serial communication between the venous bubble sensor and the sensor board due to depositions around the connector lines and micro fractures on the soldering joints could have caused the described situation." thus the failure could be confirmed.
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