Brother NX-250 Operating Guide
Troubleshooting 111
4
List of symptoms
Symptom
Probable Cause
Remedy
Reference
The sewing
machine does
not operate.
The machine is not turned on.
Turn on the machine.
page 15
The “Start/Stop” button was not
pressed.
pressed.
Press the “Start/Stop” button.
page 42
The presser foot lever is raised.
Lower the presser foot lever.
–
The “Start/Stop” button was pressed,
even though the foot controller is
connected.
even though the foot controller is
connected.
Do not use the “Start/Stop” button
when the foot controller is
connected. To use the “Start/Stop”
button, disconnect the foot controller.
when the foot controller is
connected. To use the “Start/Stop”
button, disconnect the foot controller.
page 42
The bobbin winder shaft is pushed to
the right.
the right.
Move the bobbin winder shaft to the
left.
left.
page 18
The needle
breaks.
The needle is incorrectly installed.
Correctly install the needle.
page 32
The needle clamp screw is loose.
Use the screwdriver to firmly tighten
the screw.
the screw.
The needle is bent or blunt.
Replace the needle.
The combination of fabric, thread
and needle is not correct.
and needle is not correct.
Select a thread and needle that are
appropriate for the type of fabric
being sewn.
appropriate for the type of fabric
being sewn.
page 30
The presser foot that is used is not
appropriate for the type of stitch that
you wish to sew.
appropriate for the type of stitch that
you wish to sew.
Attach the presser foot that is
appropriate for the type of stitch that
you wish to sew.
appropriate for the type of stitch that
you wish to sew.
page 94
The upper thread tension is too tight. Loosen the upper thread tension.
page 46
The fabric is pulled too much.
Lightly guide the fabric.
–
The spool is incorrectly installed.
Correctly install the spool.
page 22
The area around the hole in the
needle plate is scratched, or has a
burr on it.
needle plate is scratched, or has a
burr on it.
Replace the needle plate.
Contact your dealer or the nearest
authorized service center.
Contact your dealer or the nearest
authorized service center.
–
The area around the hole in the
presser foot is scratched, or has a
burr on it.
presser foot is scratched, or has a
burr on it.
Replace the presser foot.
Contact your dealer or the nearest
authorized service center.
Contact your dealer or the nearest
authorized service center.
–
The bobbin case is scratched, or has
a burr on it.
a burr on it.
Replace the bobbin case.
Contact your dealer or the nearest
authorized service center.
Contact your dealer or the nearest
authorized service center.
–
A bobbin designed specifically for
this machine is not used.
this machine is not used.
Incorrect bobbins will not work
properly. Only use a bobbin designed
specifically for this machine.
properly. Only use a bobbin designed
specifically for this machine.
page 16
The upper
thread breaks.
The upper thread was not threaded
correctly (for example, the spool is
not installed correctly, the spool cap
is too big for the spool being used, or
the thread has come out of the needle
bar thread guide).
correctly (for example, the spool is
not installed correctly, the spool cap
is too big for the spool being used, or
the thread has come out of the needle
bar thread guide).
Correct the upper threading.
page 22
There are knots or tangles in the
thread.
thread.
Remove any knots or tangles.
–
The selected needle is not appropriate
for the thread being used.
for the thread being used.
Select a needle that is appropriate
for the type of thread being used.
for the type of thread being used.
page 30
The upper thread tension is too tight. Loosen the upper thread tension.
page 46