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Warning Sign Cause Try this
1.  The start/stop button is pressed with the foot control 
connected.
2.  The foot control is out of order.
    (The foot control sign keeps blinking.)
Disconnect the foot control.
Contact the service center 
or the store from whom the 
machine was purchased.
The bobbin winder spindle is shifted to the right.  Shift the bobbin winder 
spindle to the left for 
stitching.
The machine will stop if the buttonhole is sewn without 
lowering the buttonhole lever.
Lower the buttonhole lever 
and start the machine again.
The machine is started after halting due to overload.
Wait for at least 15 seconds to 
restart. 
Turn the power switch OFF.
Remove tangled threads 
around take-up lever, hook 
race.
(E1-E7) The machine does not work properly due to a problem in 
the control circuit.
Contact the service center 
or the store from whom the 
machine was purchased.
It is not abnormal that a faint humming sound comes out from inside the machine.
LCD display may get warm when the machine has been used for hours.
Audible Signal The Buzzer sounds when:
pip Normal operation.
pip-pip-pip Invalid operation or malfunction.
peep E1-E7 error occurred.
pip pi-pi-pi-peep Buttonhole is completed.
Problems and Warning Signals
If a buzzer sounds and the LCD screen shows a warning sign, follow the guidance below.