Hopefully the darning plate is in place on your machine, that will solve it. If not take the throat plate off clean and inspect parts. You might need to take the bottom cover off too. I'm not quite sure how it works on the 534, but it's often the bottom of freearm that comes off on these, sometimes the casing slides off to the side, on my Berninas the top comes off. There are oil points and things that need attention on these.