Brother International Innov-is 40 Operation Manual - Page 97

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Page 97 highlights

Symptom Probable Cause Remedy Reference The upper thread is incorrectly installed. Correct the upper threading. page 20 The bobbin thread is incorrectly installed. Correct the bobbin threading. page 18 The bobbin thread is incorrectly wound. Correctly wind the bobbin. page 15 The thread tension is incorrect. The combination of fabric, thread and needle is incorrect. Select a thread and needle that are appropriate for the type of fabric being sewn. The presser foot holder is incorrectly Correctly install the presser foot installed. holder. page 28 page 33 The thread tension is incorrectly set. Adjust the thread tension. page 47 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 The upper thread or bobbin thread is Correctly thread the upper thread and page 18, incorrectly installed. correctly install the bobbin thread. 20 The spool is incorrectly installed. Correctly install the spool. page 15 4 The fabric is puckered. The combination of fabric, thread and needle is incorrect. Select a thread and needle that are appropriate for the type of fabric being sewn. The needle is bent or blunt. Replace the needle with a new one. page 28 page 29 If thin fabrics are being sewn, the stitch is too long or the fabric is not being fed correctly. Sew with stabilizer material under the fabric. page 49 The thread tension is incorrectly set. Adjust the thread tension. page 47 The upper thread is incorrectly installed. Correct the upper threading. page 20 Stitches are skipped. The combination of fabric, thread and needle is incorrect. Select a thread and needle that are appropriate for the type of fabric being sewn. The needle is bent or blunt. Replace the needle with a new one. page 28 page 29 The needle is incorrectly installed. Correctly install the needle. page 29 Dust has accumulated under the needle plate or in the bobbin case. Remove the needle plate cover and clean the bobbin case. page 91 Dust has accumulated in the feed dogs or in the bobbin case. Clean the bobbin case. page 91 A high-pitched sound is produced while sewing. A rattling noise is produced. The upper thread is incorrectly installed. The bobbin case is scratched. A bobbin designed specifically for this machine is not used. Correct the upper threading. Replace the bobbin case. Contact your dealer or the nearest authorized service center. Bobbins from older models, which have a different thickness, will not work properly. Only use a bobbin designed specifically for this machine. page 20 - page 15 95

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95
4
The thread ten-
sion is incorrect.
The upper thread is incorrectly
installed.
Correct the upper threading.
page 20
The bobbin thread is incorrectly
installed.
Correct the bobbin threading.
page 18
The bobbin thread is incorrectly
wound.
Correctly wind the bobbin.
page 15
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 presser foot holder is incorrectly
installed.
Correctly install the presser foot
holder.
page 33
The thread tension is incorrectly set.
Adjust the thread tension.
page 47
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
The fabric is
puckered.
The upper thread or bobbin thread is
incorrectly installed.
Correctly thread the upper thread and
correctly install the bobbin thread.
page 18,
20
The spool is incorrectly installed.
Correctly install the spool.
page 15
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 needle is bent or blunt.
Replace the needle with a new one.
page 29
If thin fabrics are being sewn, the
stitch is too long or the fabric is not
being fed correctly.
Sew with stabilizer material under the
fabric.
page 49
The thread tension is incorrectly set.
Adjust the thread tension.
page 47
Stitches are
skipped.
The upper thread is incorrectly
installed.
Correct the upper threading.
page 20
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 needle is bent or blunt.
Replace the needle with a new one.
page 29
The needle is incorrectly installed.
Correctly install the needle.
page 29
Dust has accumulated under the
needle plate or in the bobbin case.
Remove the needle plate cover and
clean the bobbin case.
page 91
A high-pitched
sound is pro-
duced while sew-
ing.
A rattling noise is
produced.
Dust has accumulated in the feed
dogs or in the bobbin case.
Clean the bobbin case.
page 91
The upper thread is incorrectly
installed.
Correct the upper threading.
page 20
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
Symptom
Probable Cause
Remedy
Reference