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Alfa 3050 Manuel D'instructions page 80

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Problems and Warning Signals
If a buzzer sounds and the indicator shows a warning sign, follow the guidance below.
Warning signal
The power is turned on with the foot control not
being connected.
The foot control is disconnected while sewing.
The machine is re-started too soon after it
has halted due to the overload.
Selecting a pattern after buttonhole is completed
with the buttonhole lever still lowered.
The bobbin winder spindle is shifted to the right
for bobbin winding.
The machine is malfunctioning due to a
problem in the electronic components.
Audible signal
Pip
Pip-pip-pip
Pip-pip-peep
Peep
It is not abnormal that a faint humming sound is coming out from the internal motors.
The pattern selection key area may become warm when the machine has been used for hours.
Problem
The buzzer sounds when:
Normal operation
Invalid operation
Buttonhole sewing completed
Malfunction
Connect the foot control and restart
the machine.
Wait for at least 15 seconds to restart.
If threads are jamming, remove
jammed threads.
Raise the buttonhole lever and re-
select the pattern.
Return the bobbin winder spindle
to the left.
Contact the service center or the
store from where the machine was
purchased.
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