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9. Thread chips generated in the
9-1) Long needle thread at the
1-A) The thread trimmer is used
Needle thread clamp device OFF
shuttle
beginning of stitches
for cutting.
Adjust the needle thread length to 32 ~ 36mm
Increase the sewing length to more than 10mm.
10. Roll-in malfunction of remaining
10-1) Protrusion of needle thread
1-A) Material does not keep close
Change the feed plate.
thread at underside material.
contact with the throat plate.
1-B) Stitch size is short.
Increase the sewing size to more than 10mm.
1-C) The needle thread is long.
Adjust the needle thread length to 32 ~ 36mm.
Trouble
Cause (1)
Cause (2)
Check and corrective measures
Summary of Contents for LK-1900A
Page 20: ... 16 10 Hook adjustment Standard Adjustment 0mm 0mm 7 5mm 0 05 0 1mm For DPX5 For DPX17 ...
Page 90: ... 86 Grease Grease Grease Grease Grease 8 Needle thread clamp mechanism area ...
Page 91: ... 87 Grease Grease A Grease Grease Grease Grease 9 LK 1901A relations ...
Page 92: ... 88 10 LK 1903A relations Grease Grease ...
Page 114: ... 111 12 Circuit diagrams 1 Block diagram A ...
Page 115: ... 112 2 Power supply circuit diagram A ...
Page 116: ... 113 3 Power supply circuit diagram B ...
Page 117: ... 114 4 Power supply circuit diagram C ...
Page 118: ... 115 5 Servo motor circuit diagram ...
Page 119: ... 116 6 Sensor pedal VR circuit diagram ...
Page 120: ... 117 7 MAIN PANEL board circuit diagram ...
Page 121: ... 118 8 Motor solenoid circuit diagram Thread trimmer Lifting the work clamp foot motor ...