for Electronic Parts
Is the main motor connector connected
to the power PCB assy. (CN401)
Is the main motor resistance 2-5Ω
at any rotation position?
Is the power lead wire assy. free from
damage and connected to the main
PCB assy. and power supply PCB
When press the start/stop button, reverse/reinforcement
stitch button and needle position button, does the buzzer
sound? Is "E6" displayed?
* In case of models not equipped with the start/stop button.
When press the reverse/reinforcement stitch button, is
5 - 10
Main motor does not rotate
Main motor does not rotate.
Does the pulley rotate smoothly?
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Attach the upper shaft assy.
Connect it correctly.
Replace the main motor.
Connect the power lead wire
assy. correctly or replace it.
Replace the SSVR PCB assy.