Brother NV1200 Operation Manual page 186

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Symptom
Stitches are
skipped.
A high-pitched
noise is made
while sewing.
The thread does
not pass through
the eye of the
needle.
The stitch is not
sewn correctly.
The fabric does
not feed.
The sewing lamp
does not come on.
Probable Cause
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. Correctly install the needle.
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. Correctly install the needle.
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.
The feed dogs are lowered.
The stitch is too fine.
The presser foot that is used is not
appropriate for the type of stitch
that you wish to sew.
The thread is tangled, for example,
in the bobbin case.
The sewing lamp is damaged.
The machine is not turned on.
Remedy
Correct the upper threading.
Select a thread and needle that are
appropriate for the type of fabric
being sewn.
Replace the needle.
Remove the needle plate cover and
clean the race.
Clean the race.
Correct the upper threading.
Replace the bobbin case. Contact
your retailer 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.
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.
Slide the drop feed lever to the right.
Lengthen the stitch length.
Attach the presser foot that is
appropriate for the type of stitch that
you wish to sew.
Remove the tangled thread. If the
thread is tangled in the bobbin case,
clean the race.
Contact your retailer or the nearest
authorized service center.
Turn on the machine.
Reference
page 29
page 39
page 40
page 40
page 180
page 180
page 29
–
page 23
page 32
page 40
page 68
page 57
page 180
page 108
page 57
page 68
page 180
–
page 17
Troubleshooting 185
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