Brother International PE770 Users Manual - English - Page 77

Symptom, Probable Cause, Remedy, Reference

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Symptom Probable Cause Remedy Reference The thread is tangled, for example, in the bobbin case. Remove the tangled thread. If the thread is tangled in the bobbin case, clean the race. page 70 The needle is bent or blunt. Replace the needle. The needle is incorrectly installed. Correctly install the needle. page 35 The area around the hole in the Replace the needle plate. Contact needle plate is scratched, or has a your retailer or the nearest authorized - burr on it. service center. The upper thread breaks. The area around the hole in the Replace the embroidery foot. Contact embroidery foot is scratched, or your retailer or the nearest authorized - has a burr on it. service center. The bobbin case is scratched, or has a burr on it. Replace the bobbin case. Contact your retailer or the nearest authorized service center. - 3 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 24 Bobbin thread does not wind neatly on the bobbin. The thread that was pulled out was not wound onto the bobbin correctly. Wind the thread that was pulled off around the bobbin five or six times clockwise. page 26 The bobbin thread is incorrectly installed. Correctly install the bobbin thread. page 28 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 race. - page 70 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 24 The upper thread was not threaded correctly. Correct the upper threading. page 30 The thread tension is incorrect. The bobbin thread is incorrectly installed. The thread tension is incorrect. Correctly install the bobbin thread. Adjust the tension of the upper thread. page 28 page 64 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 24 Troubleshooting 75

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Troubleshooting
75
3
— — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — —
The upper thread
breaks.
The thread is tangled, for example,
in the bobbin case.
Remove the tangled thread. If the
thread is tangled in the bobbin case,
clean the race.
page 70
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
embroidery foot is scratched, or
has a burr on it.
Replace the embroidery foot. Contact
your retailer or the nearest authorized
service center.
–
The bobbin case is scratched, or
has a burr on it.
Replace the bobbin case. 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 24
Bobbin thread
does not wind
neatly on the
bobbin
.
The thread that was pulled out
was not wound onto the bobbin
correctly.
Wind the thread that was pulled off
around the bobbin five or six times
clockwise.
page 26
The lower thread
is tangled or
breaks.
The bobbin thread is incorrectly
installed.
Correctly install the bobbin thread.
page 28
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 race.
page 70
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 24
The thread tension
is incorrect.
The upper thread was not
threaded correctly.
Correct the upper threading.
page 30
The bobbin thread is incorrectly
installed.
Correctly install the bobbin thread.
page 28
The thread tension is incorrect.
Adjust the tension of the upper
thread.
page 64
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 24
Symptom
Probable Cause
Remedy
Reference