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
E: Buttonhole sensor
F: Machine socket
G: Zigzag stepping motor
H: Feed stepping motor
I:
Driving motor
J: Circuit board C
K: Sewing light
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