(1) The thread take-up spring is in poor contact with the copper pillar. The thread take-up spring is too loose and does not detect. The position of the spring, wipe, and change should be adjusted when over-tight error detection or disconnection occurs. Adjust the method; turn the center screw counterclockwise or adjust the conductive copper sheet, until the disconnection is sensitive.
(2) The embroidered line should be re-arranged after leaving the line.
(3) The tension of the embroidery thread is too loose or too tight. The three rotating wheels should be adjusted so that the tension on the upper thread is appropriate. When the thread take-up lever is pulled, the spring contacts the copper post and the spring leaves the copper post when the thread is pulled.
(4) Corresponding insurance, if the breakage detection board plug is damaged or loose or the main control board is damaged, the circuit shall be checked to see if the socket is loose.
China Fortune Group Co.,Limited
Add：Jianglong Zone, Zhuji, Zhejiang, China