Mitsubishi 850cnc power on after all the keys can not be used, the light does not light up

First check whether you have turned on the lighting switch. Mitsubishi 850cnc boot after all the keys can not be used, the lamp does not light first check whether you have turned on the lighting switch, VMC850 machining center is the introduction of the company's international advanced technology, self-development and development of a new generation of production of vertical machining centers, the vertical machining centers are widely used in aerospace, automotive, molds, medical equipment