Brother International Innov-is 80 Operation Manual - Page 143

The upper thread

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Symptom Probable Cause Remedy Reference The thread is not passed through the bobbin-winding thread guide correctly. Correctly pass the thread through the bobbin-winding thread guide. page 22 Bobbin thread does not wind neatly on Bobbin spins slowly. the bobbin. Move the sewing speed controller to the right (so that the speed will be fast). page 25 The thread that was pulled out was not wound onto the bobbin correctly. Wind the thread that was pulled off round the bobbin five or six times clockwise. page 24 Fabric being sewn with the machine cannot be removed. Thread is tangled below the needle plate. Lift up the fabric and cut the threads below it, and clean the race. page 132 The fabric feeds in the opposite direction. The feed mechanism is damaged. Contact your dealer or the nearest authorized service center. - The upper thread has tightened up. The bobbin thread is incorrectly installed. Correctly install the bobbin thread. page 26, 128 The thread is tangled on the wrong side of the fabric. You have not threaded the upper thread properly. Correct the upper threading. page 28, 4 129 Troubleshooting 141

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Troubleshooting
141
4
—— — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — —
Bobbin thread does
not wind neatly on
the bobbin.
The thread is not passed through the
bobbin-winding thread guide
correctly.
Correctly pass the thread through
the bobbin-winding thread guide.
page 22
Bobbin spins slowly.
Move the sewing speed controller
to the right (so that the speed will
be fast).
page 25
The thread that was pulled out was
not wound onto the bobbin
correctly.
Wind the thread that was pulled
off round the bobbin five or six
times clockwise.
page 24
Fabric being sewn
with the machine
cannot be removed.
Thread is tangled below the needle
plate.
Lift up the fabric and cut the
threads below it, and clean the
race.
page 132
The fabric feeds in
the opposite
direction.
The feed mechanism is damaged.
Contact your dealer or the nearest
authorized service center.
–
The upper thread
has tightened up.
The bobbin thread is incorrectly
installed.
Correctly install the bobbin
thread.
page 26,
128
The thread is
tangled on the
wrong side of the
fabric.
You have not threaded the upper
thread properly.
Correct the upper threading.
page 28,
129
Symptom
Probable Cause
Remedy
Reference