I need help to fix the F05 error. It was jammed and the safety device was activated and then after oiling it, it seemed to free it up and dislodge the jam and stop the screeching noise, but when you push the button to "raise or lower the needle", it only sews a second or two, then it stops and gives you the F05 error. I have ordered a repair manual but have not received it yet. Need help!!