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