Power-on self-test

When you turn on the system, the system board performs self-tests. During the initial tests, the hardware boot symbol is displayed.

All models perform a series of tests to check the operation of components and some of the options that are installed when the units are first turned on. This series of tests is called the power-on self-test (POST).

The node status LED is off until booting finishes and the system software is loaded If a critical failure is detected during the POST, the software is not loaded and the system error LED on the operator information panel is illuminated. If this failure occurs, use MAP 5000: Start to help isolate the cause of the failure.

When the software is loaded, extra testing takes place, which ensures that all of the required hardware and software components are installed and functioning correctly.