17
Circuit board-A Connection
NOTE:
Do not disconnect the connectors by pulling on cord.
To disconnect, grasp the connector, not the cord.
Replacing the Electronic Components
t
i
o
!0
!1
!2!3
!4
Printed circuit board A
Printed circuit board F
Printed circuit board L
q Printed circuit board P (Black)
w Feed motor (White)
e Thread cutter motor
(3160QDC exclusive) (White)
r Bobbin winding switch (Blue)
t Power switch (White)
y Zigzag width motor (Green)
u Solenoid
(3160QDC exclusive) (Black)
i Printed circuit board F (White)
o Printed circuit board L (White)
!0 Program (Red)
!1 Buttonhole sensor
program (Red)
!2 Presser foot lifter switch
(Green)
!3 DC motor (White)
!4 Controller (Black)
q
w
e
r
y
u
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