Brother SQ9050 - Manual (Page 75)

73
4
The upper
thread breaks.
You have not inserted the needle
properly.
Insert the needle properly. page 22
The area around the hole in the nee-
dle plate is scratched.
Replace the needle plate.
Contact your retailer or the nearest
authorized service center.
–
The area around the hole in the
presser foot is scratched.
Replace the presser foot.
Contact your retailer or the nearest
authorized service center.
–
The bobbin case is scratched, or has
a burr on it.
Replace the bobbin case.
Contact your retailer or the nearest
authorized service center.
–
You have not used a bobbin that has
been designed for this machine.
Incorrect bobbins will not work
properly. Only use a bobbin that has
been designed for this machine. page 12
The lower
thread is tangled
or breaks.
You have not wound the bobbin
thread properly.
Wind the bobbin thread properly. page 12
The bobbin is scratched or does not
turn smoothly.
Replace the bobbin. –
The thread is tangled.
Remove the tangled thread and
clean the bobbin case.
page 70
You have not used a bobbin that has
been designed for this machine.
Incorrect bobbins will not work
properly. Only use a bobbin that has
been designed for this machine. page 12
Bobbin is set incorrectly. Reset the bobbin thread correctly. page 15, 16
The thread is
tangled on the
wrong side of
the fabric.
The upper thread was not threaded
correctly.
Correct the upper threading. page 17
The thread
tension is
incorrect.
You have not threaded the upper
thread properly.
Correct the upper threading. page 17
You have not wound the bobbin
thread properly.
Wind the bobbin thread properly. page 12
You have not threaded the right
combination of thread and needle
for the fabric you are using.
Choose a thread and needle that are
appropriate for the type of fabric.
page 21
You have not attached the presser
foot holder properly.
Attach the presser foot holder
properly.
page 26
The thread tension is incorrect.
Adjust the tension of the upper
thread.
page 31
You have not used a bobbin that has
been designed for this machine.
Incorrect bobbins will not work
properly. Only use a bobbin that has
been designed for this machine. page 12
Bobbin is set incorrectly. Reset the bobbin thread correctly. page 15, 16
The upper
thread is too
tight.
The bobbin thread is incorrectly
installed.
Correctly install the bobbin thread. page 15
The fabric is
wrinkled.
You have not threaded the upper thread
properly or fitted the bobbin properly.
Thread the upper thread and wind
the bobbin thread properly.
page 15, 16, 17
You have not fitted the spool properly. Fit the spool properly. –
You have not used the right combina-
tion of fabric, thread and needle. Choose a thread and needle that are
appropriate for the type of fabric.
page 21
The needle is bent or blunt. Replace the needle. page 22
Symptom Possible cause How to put it right Reference