Battery backed service indicator aids for field maintenance

A component in an electrically powered device for performing a function of the electrically powered device, comprising:

• means for indicating a diagnostic status of the component by indicating at least a need of servicing or replacement of the component;
• wherein the means for indicating receives power from a primary power source that is associated with the electrically powered device when the primary power source is available to the component;
• a self-contained power source;
• and
• means for connecting the self-contained power source to power the diagnostic indicator when the primary power source is unavailable to the component.

An apparatus for use in a component in an electrically powered device, comprising:

• a self-contained power source;
• and
• at least one switch for connecting the self-contained power source to power a diagnostic indicator of the component when a primary power source that is associated with the electrically powered device is unavailable to the component;
• wherein diagnostic indicator indicates a diagnostic status of the component by indicating at least a need of servicing or replacement of the component.

A method for powering a component having a diagnostic indicator, where the component is provided in an electrically powered device for performing a function of the electrically powered device, comprising:

• receiving power, at the component, from a primary power source that is associated with the electrically powered device when the primary power source is available to the component;
• connecting the primary power source to power the diagnostic indicator when the primary power source is available to the component;
• and
• connecting a self-contained power source of the component to power the diagnostic indicator for indicating at least a need of servicing or replacement of the component when the primary power source is unavailable to the component.