When I start processing (push start button) of score a line, the abnormal rattling noise occurs around right cover.

The noise likes that rotating fan hits something.

Noise continues processing start to end, so if processing is engraving, noise continue for long time.

Because of it, now I can not make processing.

I think the fan inside laser power supply unit may hits its case(chassis).

When the noise occurs, XCS does not display any error message.