Customer operation steps:
1. When failure occurs, were you operating the device? Yes or No.
2. Are the device settings in default values before the failure occurs? Yes or No.
3. After repowering again check if the problem persists? Yes or No.
4. If not, will the problem reappear again? What is the interval?
5. What are the site’s ambient temperature ranges? Room temperature or High temperature or Hypothermia.