Siemens has completed an investigation of the reported event.The root cause was determined to be individual improper workmanship during service as the hoses had been tightend during x-ray tube replacement in a way such that the bending radius was permanently below the critical value.In case of a malfunction of the x-ray tube cooling unit, a multi-stage detection and warning mechanism is activated so that the system displays the message "tube hot, have a break" for the user.If, despite the messages, the user continues x-ray imaging, a hw switch is activated and disables x-ray imaging.The system displays the message "no xray, tube too hot".
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