The operator took the wrong position board, and the 5# toe position board was wrongly taken as 4#. Ask the staff to read the number clearly when they are working and get the location board to work again.
The operator took the wrong position board, 5 shoe head position board mistakenly took into 4 . Ask employees to see the number clearly when they are required to do their homework, and take the right position board before working.
The operator took the wrong position board, 5 × shoes head position board was taken as 4 × shoes head position board. The employee is required to see the number clearly and take the right position board before operation.