REFER TO THE DIAGRAM FOR LOCATING THE CONNECTOR POST ON THE
CIRCUIT BOARD
A : Buttonhole sensor (BLK)
B : Sewing light (WHT)
C : Upper shaft sensor (BLK)
D : Feed motor (BLK)
E : Zigzag width motor (WHT)
F : DC motor (WHT)
G : Power transformer (primary circuit) (BLK)
C
M
E
D
F
CONNECTOR DIAGRAM
J
N
18
H : Power transformer (secondary circuit) (RED)
I : Printed circuit board "F" (BLK)
J : Bobbin winder switch (BLU)
K : Presser foot lifter switch (BLK)
L : Slide volume (WHT)
M : Machine plug (secondary circuit) (WHT)
N: Receptacle (primary) (WHT)
L
I
G
DC4030P
K
A
B
H