Random "thumping" sound from YASKAWA GP12 Mike01TJ Oct 14th 2022 Jog the robot around 1 axis at a time to see if you can isolate the noise to a single joint. Here is a link to the parts diagrams, you might be able to match a noise to a part.yrc1000/gp12/yr-1-06vxh12-a00
YRC1000 connect Lorch S8 Mike01TJ Aug 18th 2022 https://www.motoman.com/getmedia/9EA677AE-83B2-4203-87A3-23C82268F890/179325-1CD.pdf.aspx?ext=.pdf