1. Press and hold "New Sample Input" until subtitles appear on the screen \x0d\2. Press the "Empty Feed" key to the start needle, and press "End" to complete this operation \x0d\3. Selection of sewing line: Generally, choose "ordinary sewing" and "P=?" , (p is the stitch distance set for you), press "End" to finish this operation \x0d\4. To start printing, press the arrow keys. After setting each point, press the OK key. When all four points are set, press "End" and then press \x0d\5. After setting the version, press. Schema storage completed \x0d\7. Start sewing. Pay attention to check whether the position of tangent cam is correct. There is a good chance that something will go wrong here. \x0d\9。 Check whether the handwheel is installed correctly and whether the sensor at the handwheel is installed correctly. \x0d\ 10。 If it is a brother's computer sewing machine or a computer flat car that imitates his brother, pay attention to whether the installation position of the moving knife is too front, that is, the tangent line is too early. \x0d\ 1 1。 If it is a heavy machine or a copy machine, pay attention to whether the installation position of the fixed knife is at the far left. \x0d\ 12。 Pay attention to whether the pressure of the line stopper is too high. \x0d\ 13。 If it is a brotherly computer sewing machine, pay attention to whether the left side of the moving knife is worn. In some of these machines, it is easy to cause the tangent precession knife not to reset. If the moving knife gets stuck, the needle will collide with the moving knife for the second time, damaging the left side of the needle and the moving knife. When there is a scar on the left side of the moving knife, the upper thread will not enter the gap of the moving knife smoothly during tangent, resulting in the upper thread being too short. When lifting the needle for the second time, the thread will fall off from the eye of the needle. Ninth, pay attention to whether the drum and threading device are vertical. The angle difference between the winding drum and the threading device is too large, the winding resistance is too large, and the thread end is too short when tangent.