Brother International NX-250 Users Manual - English - Page 105

while sewing.

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APPENDIX Symptom The fabric is wrinkled. Stitches are skipped. A high-pitched noise is made while sewing. The needle threader cannot be used. The stitch is not sewn correctly. Probable Cause The upper thread was not threaded correctly, or the bobbin is incorrectly installed. The spool is incorrectly installed. The combination of fabric, thread and needle is not correct. The needle is bent or blunt. If thin fabrics are being sewn, the stitch is too long. The thread tension is incorrect. The upper thread was not threaded correctly. The combination of fabric, thread and needle is not correct. The needle is bent or blunt. The needle is incorrectly installed. Dust has accumulated under the needle plate or in the bobbin case. Dust has accumulated in the feed dogs or in the bobbin case. The upper thread was not threaded correctly. The bobbin case is scratched, or has a burr on it. A bobbin designed specifically for this machine is not used. The needle has not been raised to the correct position. The needle is incorrectly installed. The presser foot that is used is not appropriate for the type of stitch that you wish to sew. The thread tension is incorrect. The thread is tangled, for example, in the bobbin case. Remedy Correctly thread the upper thread and correctly install the bobbin thread. Correctly install the spool. Select a thread and needle that are appropriate for the type of fabric being sewn. Replace the needle. Shorten the stitch length or sew with stabilizer material under the fabric. Adjust the tension of the upper thread. Correct the upper threading. Select a thread and needle that are appropriate for the type of fabric being sewn. Replace the needle. Correctly install the needle. Remove the needle plate cover and clean the race. Clean the race. Correct the upper threading. Replace the bobbin case. Contact your dealer or the nearest authorized service center. Incorrect bobbins will not work properly. Only use a bobbin designed specifically for this machine. Press the "Needle Position" button. Correctly install the needle. Attach the presser foot that is appropriate for the type of stitch that you wish to sew. Adjust the tension of the upper thread. Remove the tangle thread. If the thread is tangled in the bobbin case, clean the race. Reference page 20, 22 page 22 page 30 page 32 page 48 page 46 page 22 page 30 page 32 page 100 page 100 page 22 - page 16 page 25 page 32 page 94 page 46 page 100 104

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APPENDIX
— — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — —
The fabric is
wrinkled.
The upper thread was not threaded
correctly, or the bobbin is incorrectly
installed.
Correctly thread the upper thread
and correctly install the bobbin
thread.
page 20, 22
The spool is incorrectly installed.
Correctly install the spool.
page 22
The combination of fabric, thread
and needle is not correct.
Select a thread and needle that are
appropriate for the type of fabric
being sewn.
page 30
The needle is bent or blunt.
Replace the needle.
page 32
If thin fabrics are being sewn, the
stitch is too long.
Shorten the stitch length or sew with
stabilizer material under the fabric.
page 48
The thread tension is incorrect.
Adjust the tension of the upper
thread.
page 46
Stitches are
skipped.
The upper thread was not threaded
correctly.
Correct the upper threading.
page 22
The combination of fabric, thread
and needle is not correct.
Select a thread and needle that are
appropriate for the type of fabric
being sewn.
page 30
The needle is bent or blunt.
Replace the needle.
page 32
The needle is incorrectly installed.
Correctly install the needle.
Dust has accumulated under the
needle plate or in the bobbin case.
Remove the needle plate cover and
clean the race.
page 100
A high-pitched
noise is made
while sewing.
Dust has accumulated in the feed
dogs or in the bobbin case.
Clean the race.
page 100
The upper thread was not threaded
correctly.
Correct the upper threading.
page 22
The bobbin case is scratched, or has
a burr on it.
Replace the bobbin case.
Contact your dealer or the nearest
authorized service center.
–
A bobbin designed specifically for
this machine is not used.
Incorrect bobbins will not work
properly. Only use a bobbin designed
specifically for this machine.
page 16
The needle
threader cannot
be used.
The needle has not been raised to
the correct position.
Press the “Needle Position” button.
page 25
The needle is incorrectly installed.
Correctly install the needle.
page 32
The stitch is not
sewn correctly.
The presser foot that is used is not
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.
page 94
The thread tension is incorrect.
Adjust the tension of the upper
thread.
page 46
The thread is tangled, for example,
in the bobbin case.
Remove the tangle thread. If the
thread is tangled in the bobbin case,
clean the race.
page 100
Symptom
Probable Cause
Remedy
Reference