18aa367c_ooting_Sewing_Machine_Problems__Symptom
[Root Cause] Upper thread has run out. Presser foot is up. Bobbin winder shaft was left in winding position. Buttonhole lever was not lowered when machine was placed in buttonhole mode. [Corrective Action] Replace empty spool and thread machine. Lower presser foot. Move bobbin winder shaft back fully to left. Lower buttonhole lever. [Symptom] 
Needle will not move.
Troubleshooting Sewing Machine Problems
Symptom