Generac C Panel

What happens when you hit the test button on the C panel?

On my generator, sometimes the lights only light up with half intensity, like something isn't making a complete connection.

I think I have some bad relays that are not making proper connections. My schematic doesn't cover the two circuit boards.

Thanks.

My Generator is: model SG30 / 17383 serial 0785887

[Helios]

The test button on the left side (below the 5 lights) is for testing the light only (fire code requirement) The lights only flash when pressed, if they appear dim try checking the connections. But this is not critical to opperation of the generator.