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10. Step 10 (Driving and Bobbin Winding Motors)
Step10
Sewing Motor
Spool Motor
[Correct condition]
When the presser bar is lowered
and the foot control is depressed,
the driving motor runs.
When the bobbin winding button
is pressed, the bobbin winding
motor runs.
45
[Faulty condition and remedy]
The display shows "error".
- Remedy –
Check the motor belt tension.
Replace the driving motor,
bobbin winding motor or circuit
board A.
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