Factory Reset

A factory reset is bringing the device to a known initial state by returning the user parameters accumulated in non-volatile memory to their production values. Its value in fault finding is great: it separates in a single step whether the behaviour stems from a wrong setting or from the hardware.

If a device is behaving unexpectedly, the first question asked is when and by whom the settings were changed. In a system that has been in use for a long time, more than one person may have touched the settings, and which value changed when is most often not recorded.

In practice this function is usually triggered by a particular key combination, a button held down at power-up, or a command confirmed from within a menu; the triggering method is defined in the product's manual. To prevent it from being triggered by accident, a two-step confirmation is usually required.

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