Brother International KM-430B Network Users Manual - English - Page 43

Trouble Cause Check Remedy Page Start position is incorrect. Feed eam position is wrong Feed cam position Fault• start Start stopper position is wrong. Ball presser plate position Match heed cam mark in with bed mark. 35 Adjust start stopper position. 29 Excessive shock at stop Clutch cam timing Deceleration is not enough at low speed. Brake spring pressure Brake shoe clearance Adjust clutch cam timing. 28 Adjust brake spring pressure. 30 Adjust brake. 29 Ball presser plate Thread wiper does not operate properly. HThread wiper interferes with needle. Thread wiper position is wrong. Clearance between thread wiper and needle point Thread wiper position Adjust ball presser plate position. 27 Adjust thread wiper height. 34 Adjust thread wiper stroke. 34 Lower thread is wound unevenly. Lower thread tension bracket position is wrong. Lower thread tension bracket position Adjust lower thread tension bracket position. Lower thread is not wound enough. Bobbin presser position is wrong. Thread volume Adjust bobbin presser position. Main tension release timing is wrong. Clutch cam timing Adjust clutch cam timing. 28 Thread slips out. Needle thread length is uneven. Roller shaft disengaging i timing Adjust start lever position. 28 Thread take-up lever stroke is incorrect. Thread take-up lever stroke Adjust thread take-up lever stroke. 33