Hello! Any Riso Experts around? My Riso HC5500 I recently got, had a working screen, and scanner copy equipment. I thought the pressure sense on the screen was stiff, so I went to the screen there I thought it could be adjusted. After that the screen is not responding, I can not access the copy function, and not log in at all via the screen. Service Tech is not easy to get in my area. If you know how to restore it pls advice, thanks.