Brother LS-2125i - Basic Sewing And Mending Machine Operation Manual page 54

APPENDIX —————————————————————————————————————————————————————
Symptom
You have not threaded the upper
thread properly or fitted the bobbin
properly.
You have not fitted the spool prop-
erly.
You have not used the right
The fabric is
combination of fabric, thread and
wrinkled.
needle.
The needle is bent or blunt.
If you are sewing thin fabric, the
stitch is too thick.
The thread tension is incorrect.
You have not threaded the upper
thread properly.
You have not used the right combi-
nation of fabric, thread and needle.
Stitches are
The needle is bent or blunt.
skipped.
You have not inserted the needle
properly.
Dust has accumulated under the
needle plate or in the shuttle race.
Dust has built up in the feed dogs or
in the shuttle race.
You have not threaded the upper
thread properly.
The bobbin case is scratched.
There is a high-
pitched noise
while sewing.
You have not used bobbin that has
been designed for this machine.
Insufficient oiling.
The presser foot that you are using is
not correct for the type of stitch.
The stitch is not
The thread tension is incorrect.
sewn correctly.
The thread is tangled, for example,
in the shuttle race.
You have not used the right combi-
nation of fabric, thread and needle.
The fabric does
not feed.
The thread is tangled, for example,
in the shuttle race.
The sewing light
bulb does not The sewing lamp is damaged.
come on.
52
Possible cause How to put it right
Thread the upper thread and wind
the bobbin thread properly.
Fit the spool properly.
Choose a thread and needle that are
appropriate for the type of fabric.
Replace the needle.
Sew with stabiliser material under
the fabric.
Adjust the tension of the upper
thread.
Correct the upper threading.
Choose a thread and needle that are
appropriate for the type of fabric.
Replace the needle.
Insert the needle properly.
Remove the needle plate cover and
clean the plate and the shuttle race.
Clean the shuttle 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 that has
been designed for this machine.
Make sure to oil the machine once a
week if you use it more than an hour
a day. If you use it more often, oil
every day.
Attach the presser foot that is correct
for the type of stitch that you want to
sew.
Adjust the tension of the upper
thread.
Remove the tangle thread. If the
thread is tangled in the shuttle race,
clean the shuttle race.
Choose a thread and needle that are
appropriate for the type of fabric.
Remove the tangle thread. If the
thread is tangled in the shuttle race,
clean the shuttle race.
Change the sewing light bulb.
Reference
page 14, 16
–
page 19
page 20
page 31
page 28
page 16
page 19
page 20
page 46, 47
page 46
page 16
–
page 12
page 45
page 33, 36,
38, 40, 41
page 28
page 46
page 19
page 46
page 45