Hello I am having a problem with the chuck not opening or closing, both sensors work correctly but i keep getting the alarms(1725 alarm A CHUCK ls-sol mismatch) (no chuck clamp/unclamp confirmation).Before i was able to operate the chuck even with these alarms i would just fix the sensors but not anymore. I read in another site that it could be the RU-1 board does anyone have a picture of how it looks?? i tried going through the books but i cant seem to find it. Thank you