Brother International Simplicity SB3129 Users Manual - English - Page 143

Troubleshooting

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Troubleshooting If the machine stops operating correctly, check the following possible problems before requesting service. If the problem persists, contact your retailer or the nearest authorized service center. Symptom Probable Cause Remedy Reference The machine is not turned on. Turn on the machine. page 11 The sewing machine does not operate. The start/stop button was not pressed. The presser foot lever is raised. The start/stop button was pressed, even though the foot controller is connected. Press the start/stop button. Lower the presser foot lever. Do not use the start/stop button when the foot controller is connected. To use the start/stop button, disconnect the foot controller. page 49 - page 49 The bobbin winder shaft is pushed to Move the bobbin winder shaft to the the right. left. page 21 The needle is incorrectly installed. Correctly install the needle. The needle clamp screw is loose. Use the screwdriver to firmly tighten the screw. page 35 4 The needle is bent or blunt. Replace the needle. The combination of fabric, thread and needle is not correct. Select a thread and needle that are appropriate for the type of fabric being sewn. page 33 The presser foot that is used is not Attach the presser foot that is appropriate for the type of stitch that appropriate for the type of stitch that you wish to sew. you wish to sew. page 128 The needle breaks. The upper thread tension is too tight. Loosen the upper thread tension. The fabric is pulled too much. Lightly guide the fabric. The spool is incorrectly installed. Correctly install the spool. 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. page 54 - page 24 - The area around the hole in the Replace the presser foot. presser foot is scratched, or has a Contact your retailer or the nearest - burr on it. 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 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 Troubleshooting 137

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Troubleshooting
137
4
Troubleshooting
If the machine stops operating correctly, check the following possible problems before requesting service.
If the problem persists, contact your retailer or the nearest authorized service center.
Symptom
Probable Cause
Remedy
Reference
The sewing
machine does
not operate.
The machine is not turned on.
Turn on the machine.
page 11
The start/stop button was not
pressed.
Press the start/stop button.
page 49
The presser foot lever is raised.
Lower the presser foot lever.
–
The start/stop button was pressed,
even though the foot controller is
connected.
Do not use the start/stop button
when the foot controller is
connected. To use the start/stop
button, disconnect the foot
controller.
page 49
The bobbin winder shaft is pushed to
the right.
Move the bobbin winder shaft to the
left.
page 21
The needle
breaks.
The needle is incorrectly installed.
Correctly install the needle.
page 35
The needle clamp screw is loose.
Use the screwdriver to firmly tighten
the screw.
The needle is bent or blunt.
Replace the needle.
The combination of fabric, thread
and needle is not correct.
Select a thread and needle that are
appropriate for the type of fabric
being sewn.
page 33
The presser foot that is used is not
appropriate for the type of stitch that
you wish to sew.
Attach the presser foot that is
appropriate for the type of stitch that
you wish to sew.
page 128
The upper thread tension is too tight.
Loosen the upper thread tension.
page 54
The fabric is pulled too much.
Lightly guide the fabric.
–
The spool is incorrectly installed.
Correctly install the spool.
page 24
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 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
▼