Brother CE7070PRW Operation Manual page 98

APPENDIX — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — —
■ After sewing
Symptom
The upper
The bobbin thread is incorrectly
thread has
installed.
tightened up.
You have not threaded the upper
thread properly.
You have not wound the bobbin
thread properly.
The bobbin thread is incorrectly
installed.
You have not threaded the right
combination of thread and needle
The thread
for the fabric you are using.
tension is
incorrect.
You have not attached the presser-
foot holder properly.
The thread tension is incorrect.
You have not used a bobbin that has
been designed for this machine.
Bobbin is set incorrectly.
The thread is
tangled on the
You have not threaded the upper
thread properly.
wrong side of
the fabric.
The presser foot you are using is not
appropriate for the type of stitch that
you want to sew.
The stitch is not
The thread tension is incorrect.
sewn correctly.
The thread is tangled, for example,
in the race.
96
Possible cause How to put it right
Correctly install the bobbin thread.
Correct the upper threading.
Wind the bobbin thread properly.
Correctly install the bobbin thread.
Choose a thread and needle that are
appropriate for the type of fabric.
Attach the presser-foot holder
properly.
Adjust the tension of the upper
thread.
Incorrect bobbins will not work
properly. Only use a bobbin that has
been designed for this machine.
Reset the bobbin thread correctly.
Correct the upper threading.
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 race, clean
the race.
Reference
page 20, 83
page 23
page 15
page 20
page 29
page 35
page 41, 87
page 15
page 20, 21
page 23, 84
page 73
page 41, 87
page 80, 84