Brother International Innov-ís 40 Users Manual - English - Page 94

Troubleshooting

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Troubleshooting If the machine stops operating correctly, check for the following possible causes before requesting service. If the problem persists, contact your dealer or the nearest authorized service center. Symptom Probable Cause Remedy Reference The plug of the power cord is not inserted into an electrical outlet. Insert the plug of the power cord into a household electrical outlet. page 14 The machine is not turned on. Turn on the machine. page 14 The bobbin winder shaft is moved to Slide the bobbin winder shaft to the the right. left. page 17 The presser foot lever is raised. Lower the presser foot lever. page 42 The sewing machine does A stitch other than the buttonhole or bar tack stitch was selected and the start/stop button was pressed while Raise the buttonhole lever. - not operate. the buttonhole lever is lowered. The buttonhole or bar tack stitch was selected and the start/stop button was pressed while the buttonhole lever is Pull down the buttonhole lever. page 59 raised. 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 page 42 the foot controller. 4 The needle is incorrectly installed. Correctly install the needle. page 29 The needle clamp screw is loose. Use the screwdriver to firmly tighten the screw. page 30 The needle is bent or blunt. Replace the needle with a new one. page 29 The combination of fabric, thread and needle is incorrect. Select a thread and needle that are appropriate for the type of fabric being sewn. page 28 The appropriate presser foot for the Attach the presser foot that is type of stitch that you wish to sew is appropriate for the type of stitch that page 87 not used. you wish to sew. The upper thread tension is too tight. Loosen the upper thread tension. page 47 The needle breaks. The fabric is pulled too much. The area around the hole in the needle plate is scratched. Lightly guide the fabric. - Replace the needle plate. Contact your dealer or the nearest - authorized service center. The area around the hole in the presser foot is scratched. Replace the presser foot. Contact your dealer or the nearest - authorized service center. The bobbin case is scratched. Replace the bobbin case. Contact your dealer or the nearest - authorized service center. A bobbin designed specifically for this machine is not used. Bobbins from older models, which have a different thickness, will not work properly. Only use a bobbin designed specifically for this machine. page 15 93

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4
Troubleshooting
If the machine stops operating correctly, check for the following possible causes before requesting service.
If the problem persists, contact your dealer or the nearest authorized service center.
Symptom
Probable Cause
Remedy
Reference
The sewing
machine does
not operate.
The plug of the power cord is not
inserted into an electrical outlet.
Insert the plug of the power cord into
a household electrical outlet.
page 14
The machine is not turned on.
Turn on the machine.
page 14
The bobbin winder shaft is moved to
the right.
Slide the bobbin winder shaft to the
left.
page 17
The presser foot lever is raised.
Lower the presser foot lever.
page 42
A stitch other than the buttonhole or
bar tack stitch was selected and the
start/stop button was pressed while
the buttonhole lever is lowered.
Raise the buttonhole lever.
–
The buttonhole or bar tack stitch was
selected and the start/stop button was
pressed while the buttonhole lever is
raised.
Pull down the buttonhole lever.
page 59
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 42
The needle
breaks.
The needle is incorrectly installed.
Correctly install the needle.
page 29
The needle clamp screw is loose.
Use the screwdriver to firmly tighten
the screw.
page 30
The needle is bent or blunt.
Replace the needle with a new one.
page 29
The combination of fabric, thread and
needle is incorrect.
Select a thread and needle that are
appropriate for the type of fabric
being sewn.
page 28
The appropriate presser foot for the
type of stitch that you wish to sew is
not used.
Attach the presser foot that is
appropriate for the type of stitch that
you wish to sew.
page 87
The upper thread tension is too tight.
Loosen the upper thread tension.
page 47
The fabric is pulled too much.
Lightly guide the fabric.
–
The area around the hole in the
needle plate is scratched.
Replace the needle plate.
Contact your dealer or the nearest
authorized service center.
–
The area around the hole in the
presser foot is scratched.
Replace the presser foot.
Contact your dealer or the nearest
authorized service center.
–
The bobbin case is scratched.
Replace the bobbin case.
Contact your dealer or the nearest
authorized service center.
–
A bobbin designed specifically for
this machine is not used.
Bobbins from older models, which
have a different thickness, will not
work properly. Only use a bobbin
designed specifically for this
machine.
page 15