Board A attaching and removing
(TO REMOVE)
1. Remove the front cover unit.
2. Pull out 8 connectors from the Board A.
3. Remove 4 screws (B) and Board A.
(TO ATTACH)
3. Follow the above procedure in reverse.
D: Upper shaft sensor H: Feed stepping motor
E: Buttonhole sensor I: Driving motor
F: Machine socket J: Circuit board C
G: Zigzag stepping motor K: Sewing light
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