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2.2 Motor speed control button (same as P-01 in 6.2.1 setting menu)。
2.3 Blower, cutting stitches：Click the number to change the corresponding parameter value。
Blow 1&2：Blowing operation, bottom line off line，When the pants cover the first piece
of reflective paper, stop blowing according to the number of delayed stitches;
Front cut：The pants cover the second piece of reflective paper and start cutting
according to the number of delayed stitches；
Blow 1
Blow 3
Blow 2
Blow 4
