E022—motor stalled while trimming

(the speed of motor is less than 25rpm or current greater than 10A in 2s while cut line running)

Troubleshooting steps
A) check if there are too many broken thread accumulated under the needle plate for a long time, that will lead stuck.
2) check if the mechanical trimming position is correct, needle position is correct, or too much deviation in needle position. [Whether changing the parameter #69 and #75]