Brother International NX-600 Users Manual - English - Page 149

Symptom, Probable Cause, Remedy, Reference, The upper thread, breaks., The lower thread is

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CONTENTS GETTING READY SEWING BASICS UTILITY STITCHES Symptom Probable Cause Remedy 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 hook). Correct the upper threading. There are knots or tangles in the thread. Remove any knots or tangles. The selected needle is not appropriate for the thread being used. Select a needle that is appropriate for the type of thread being used. The upper thread tension is too tight. Loosen the upper thread tension. The upper thread breaks. The thread is tangled, for example, in the shuttle. Remove the tangle thread. If the thread is tangled in the shuttle, clean the shuttle. The needle is bent or blunt. Replace the needle. The needle is incorrectly installed. Correctly install the needle. The area around the hole in the needle plate is scratched, or has a burr on it. Replace the needle plate. Contact your retailer or the nearest authorized service center. The area around the hole in the presser foot is scratched, or has a burr on it. Replace the presser foot. Contact your retailer or the nearest authorized service center. The shuttle is scratched, or has a burr on it. Replace the shuttle. Contact your retailer 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. The bobbin thread is incorrectly installed. Correctly install the bobbin thread. The lower thread is tangled or breaks. The bobbin is scratched or does not rotate smoothly, or has a burr on it. The thread is tangled. Replace the bobbin. Remove the tangled thread and clean the shuttle. 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. Reference page 24 - page 34 page 53 page 140 page 35 - - - page 18 page 22 - page 140 page 18 APPENDIX INDEX Troubleshooting 143

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Troubleshooting
143
— — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — —
GETTING READY
CONTENTS
SEWING BASICS
UTILITY STITCHES
APPENDIX
INDEX
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 hook).
Correct the upper threading.
page 24
There are knots or tangles in the
thread.
Remove any knots or tangles.
–
The selected needle is not
appropriate for the thread being
used.
Select a needle that is appropriate
for the type of thread being used.
page 34
The upper thread tension is too tight.
Loosen the upper thread tension.
page 53
The thread is tangled, for example, in
the shuttle.
Remove the tangle thread. If the
thread is tangled in the shuttle,
clean the shuttle.
page 140
The needle is bent or blunt.
Replace the needle.
page 35
The needle is incorrectly installed.
Correctly install the needle.
The area around the hole in the
needle plate is scratched, or has a
burr on it.
Replace the needle plate. Contact
your retailer or the nearest
authorized service center.
–
The area around the hole in the
presser foot is scratched, or has a
burr on it.
Replace the presser foot. Contact
your retailer or the nearest
authorized service center.
–
The shuttle is scratched, or has a burr
on it.
Replace the shuttle. Contact your
retailer 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 18
The lower thread is
tangled or breaks.
The bobbin thread is incorrectly
installed.
Correctly install the bobbin
thread.
page 22
The bobbin is scratched or does not
rotate smoothly, or has a burr on it.
Replace the bobbin.
–
The thread is tangled.
Remove the tangled thread and
clean the shuttle.
page 140
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 18
Symptom
Probable Cause
Remedy
Reference