Please see the following connector connection diagram for the printed circuit board
A and U.
Printed circuit board R (White)
Printed circuit board A
LCD detection switch
(Top position)(Blue)
LCD detection switch
(Bottom position)(Brown)
Switching regulator (White)
DC Motor (White)
Remaining bobbin thread
solenoid (Black)
Thread cutter solenoid
(White)
Upper shaft disconnect
solenoid (Red)
Potention meter (Blue)
Needle threader motor
detection switch (Top)(Blue)
Buttonhole sensor (White)
Thread cutter sensor (Black)
Printed circuit board U
Zigzag width motor (Black)
Ttread tension motor (Gray)
Connector Connection Diagaram
Bobbin winder (Black)
Needle threader motor detection
switch (Bottom)(Brown)
Printed circuit board U
(Black)
Printed circuit board B (Black)
Printed circuit board U (Black)
LCD Motor (Top/Bottom)
Printed circuit board P (Black)
Printed circuit board Q (Black)
Feed motor (Red)
Printed circuit board S1 (Black)
Presser foot lifter sensor (Brown)
11
9500
Printed circuit board L2 (Gray)
Printed circuit board L2 (White)
Printed circuit board F1 (Red)
Printed circuit board F2 (Black)
Slide volume (Red)
P foot sensor (Blue)
Printed circuit board A (Black)
Printed circuit board L3 (Gray)
Printed circuit board A (Black)
Needle threader motor (Black)