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TROUBLESHOOTING
404
Loops appear on the
surface of the fabric
when embroidering
The thread tension is incorrectly set. Adjust the thread tension.
301
The tension of the upper thread is incorrectly
set for the combination of the fabric, thread
and pattern being used.
Use the embroidery needle plate cover.
274
The combination of the bobbin case and
bobbin thread is incorrect.
Change the bobbin case or bobbin thread so
that the correct combination is used.
273
CAUTION
• This machine is equipped with a thread detection device. If the “Start/Stop” button is pushed before the
upper threading is done, the machine will not operate properly. Also, depending on the pattern selected,
the machine may feed the fabric even if the needle is raised. This is due to the needle bar release
mechanism. At these times, the machine will make a sound different from what is made during normal
sewing. This is not the sign of a malfunction.
• If the power is disconnected during sewing:
Turn the main power to OFF and unplug the machine.
If you restart the machine, follow the instructions for operating the machine correctly.
Problem Cause Solution Page
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