Brother 885-U20 Operation Manual page 114

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APPENDIX
Symptom
The thread is tangled, for example,
in the bobbin case.
The needle is bent or blunt.
The needle is incorrectly installed.
The area around the hole in the
needle plate is scratched, or has a
burr on it.
The upper
thread breaks. The area around the hole in the
presser foot is scratched, or has a
burr on it.
The bobbin case is scratched, or has
a burr on it.
A bobbin designed specifically for
this machine is not used.
The bobbin thread is incorrectly
installed.
The bobbin is scratched or does not
rotate smoothly, or has a burr on it.
The lower
thread is tangled
The thread is tangled.
or breaks.
A bobbin designed specifically for
this machine is not used.
The upper thread was not threaded
correctly.
The bobbin thread is incorrectly
installed.
The combination of fabric, thread
The thread
and needle is not correct.
tension is
incorrect.
The presser foot holder is incorrectly
installed.
The thread tension is incorrect.
A bobbin designed specifically for
this machine is not used.
The upper thread was not threaded
correctly, or the bobbin is incorrectly
installed.
The spool is incorrectly installed.
The fabric is
The combination of fabric, thread
wrinkled.
and needle is not correct.
The needle is bent or blunt.
If thin fabrics are being sewn, the
stitch is too long.
112
Probable Cause Remedy
Remove the tangle thread. If the
thread is tangled in the bobbin case,
clean the race.
Replace the needle.
Correctly install the needle.
Replace the needle plate.
Contact your dealer or the nearest
authorized service center.
Replace the presser foot.
Contact your dealer or the nearest
authorized service center.
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.
Correctly install the bobbin thread.
Replace the bobbin.
Remove the tangled thread and
clean the race.
Incorrect bobbins will not work
properly. Only use a bobbin designed
specifically for this machine.
Correct the upper threading.
Correctly install the bobbin thread.
Select a thread and needle that are
appropriate for the type of fabric
being sewn.
Correctly install the presser foot
holder.
Adjust the tension of the upper thread.
Incorrect bobbins will not work
properly. Only use a bobbin designed
specifically for this machine.
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.
Reference
page 100
page 32
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page 16
page 20
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page 100
page 16
page 22
page 20
page 30
page 35
page 46
page 16
page 20, 22
page 22
page 30
page 32
page 48