Ask Experts & Get Answers to Your Questions - ASAP
Hi and welcome to Just answer.
Initially, the error main drive sync failed occurred when your main motor/drive is not moving freely. To avoid burning of motor the machine stops and give that error.
The usual cause is lint or blockage to the bobbin area or your bobbin is need to replace. Just remove your bobbin and clean it. If still, try to replace it.
Hope this information will be helpful.
IMPORTANT: RATING IS REQUIRED! If you are satisfied to my answer please don't forget to rate,,GOOD OR EXCELLENT rating and BONUS are greatly appreciated...