NO JUMP STITCH:
- Two possible causes could be: The Jump Stitch Solenoid or the Color Change PCB. One or both could be non-functional. Turn the power off to the machine. Remove the color change covers, refer to the Technical Manual for a illustrated view of the covers. The resistance of the Jump Stitch Solenoid can be checked at the connector on the Color Change PCB. Disconnect the solenoid connector with the machine powered off. The resistance of a working solenoid is 31 ohms. If it is shorted, call your distributor to order the Jump Stitch Solenoid, and the Color Change PCB, as a shorted solenoid causes some components damage on the PCB. Check the Color Change Section of the Parts Manual to find part numbers, and order them from your distributor.
- There are two ways to test the Jump Stitch Solenoid. First sew a 5 inch Block I. The vertical column should be smooth with no crease down the center of the I. If there is a stitch down the center of the column, the solenoid should be replaced along with the Color Change PCB.
