Not familiar with this model but... I would approach it by eliminating the mechanical portion. There should be a way to mechanically release the brake. Run it and turn it by hand. Anything noticeably different? If it feels smooth by hand, it may be a motor phase issue or speed sensor. Not sure why it wouldn't code though. There should be some analyzer functions that could help if you have access and the machine is equipped. That's my 2 cents. might only be worth 1