Pfaff Creative 1371. I stopped my machine to refill the bobbin, and when I replaced the bobbin,

Question

I stopped my machine to refill the bobbin, and when I replaced the bobbin, the needle seemed to be out of alignment. Every time the needle goes down, it hits the bobbin case and breaks. What happened? This machine was just sent off for service and was completely gone through, and this is my first time to use the machine again.