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Condition
The sewing speed
1. The speed control slider is at the left side (low position).
does not increase
and buzzer sounds
when using the
A.S.R. foot holder.
1. The screen brightness is not adjusted properly.
Visual touch screen
is not clear
The needle thread
1. Thread tension is not balanced.
appears on the
wrong side of the
fabric when the
stitch width value is
larger than "7.0"
The bobbin thread
1. The bobbin thread remaining sensor is turned off.
remaining sensor
2. Lint has collected around the bobbin thread remaining sensor.
does not work;
3. A bobbin other than the "J" plastic bobbin is used.
There is no signal
sound when the
bobbin thread is
run out and the
machine does not
stop sewing
The message
1. A strong light such as a white light bulb or LED light illuminates the
"Bobbin thread
is not sufficient."
appears and the
machine stops,
although there is
enough amount of
thread wound on
the bobbin.
The USB flash drive
1. Format setting of the USB flash drive is not correct.
2. The USB flash drive is malfunctioning.
is not read
It is not abnormal for a faint humming sound to be heard from the internal motors.
The visual touch screen may become warm after several hours of continuous use.
area around the hook cover on the needle plate.
Cause
148
Reference
Move the speed
control slider to the
rightmost (maximum
sewing speed).
Page 137
Page 49
Page 140
Page 142
Page 26
Do not shine the
area around the
hook cover on the
needle plate with
strong light.
Pages 149‑150
Replace the USB
flash drive.
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