Regarding the symptom of the art monitoring failure, clarification on the symptom of the failure was requested but determined to not be available.The complete set of the m540 logs was requested multiple times but was not provided.The cited device was tested for functionality of the art parameter and was found to function as designed.No device malfunction regarding this issue could be verified, and the root cause could not be determined.Regarding the symptom of the monitor switching off, after review of the m540 error logs provided, it was found that this was a reboot due to a known software issue where the m540 reboots in response to receiving low accuracy messages from the etco2 pod.A field safety corrective action has been released for this issue, draeger reference (b)(4).This customer was notified of this issue via the field action.The customer was again provided the tsb with the available solutions.
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