Brother International Simplicity SB3129 Users Manual - English - Page 146

Bobbin thread

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APPENDIX Symptom ▲ Probable Cause The pressure of the presser foot is weak. The thread is tangled, for example, The fabric does in the shuttle. not feed. Zigzag foot "J" is slanted on a thick seam at the beginning of stitching. The sewing lamp does not come on. The sewing lamp is damaged. Nothing appears The brightness of the LCD is either in the LCD. too light or too dark. While winding the bobbin, the bobbin thread was wound below the bobbin winder seat. You have not wound the bobbin thread properly. Bobbin thread does not wind neatly on the bobbin. The thread is not passed through the bobbin-winding thread guide correctly. Bobbin spins slowly. The thread that was pulled out was not wound onto the bobbin correctly. Fabric being sewn with the machine cannot be removed. Thread is tangled below the needle plate. The fabric feeds in the opposite The feed mechanism is damaged. direction. The upper thread has tightened up. The bobbin thread is incorrectly installed. The thread is tangled on the wrong side of the fabric. You have not threaded the upper thread properly. Remedy Turn the presser foot pressure dial to the right to increase the pressure of the presser foot. Remove the tangle thread. If the thread is tangled in the shuttle, clean the shuttle. Use the presser foot locking pin (black button on the left side) on zigzag foot "J" to keep the presser foot level while sewing. Contact your retailer or the nearest authorized service center. Adjust the brightness of the LCD. After removing the thread wound below the bobbin winder seat, wind the bobbin correctly. Correctly pass the thread through the bobbin-winding thread guide. Move the sewing speed controller to the right (so that the speed will be fast). Wind the thread that was pulled off round the bobbin five or six times clockwise. Lift up the fabric and cut the threads below it, and clean the race. Contact your dealer or the nearest authorized service center. Correctly install the bobbin thread. Correct the upper threading. Reference page 39 page 135 page 63 - page 142 page 18 page 20 page 21 page 20 page 135 - page 22 page 24 140

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APPENDIX
—————————————————————————————————————————————————————
140
▲
The pressure of the presser foot is
weak.
Turn the presser foot pressure dial to
the right to increase the pressure of
the presser foot.
page 39
The fabric does
not feed.
The thread is tangled, for example,
in the shuttle.
Remove the tangle thread. If the
thread is tangled in the shuttle, clean
the shuttle.
page 135
Zigzag foot “J” is slanted on a thick
seam at the beginning of stitching.
Use the presser foot locking pin
(black button on the left side) on
zigzag foot “J” to keep the presser
foot level while sewing.
page 63
The sewing lamp
does not come on.
The sewing lamp is damaged.
Contact your retailer or the nearest
authorized service center.
–
Nothing appears
in the LCD.
The brightness of the LCD is either
too light or too dark.
Adjust the brightness of the LCD.
page 142
While winding
the bobbin, the
bobbin thread
was wound
below the
bobbin winder
seat.
You have not wound the bobbin
thread properly.
After removing the thread wound
below the bobbin winder seat, wind
the bobbin correctly.
page 18
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 20
Bobbin spins slowly.
Move the sewing speed controller to
the right (so that the speed will be
fast).
page 21
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 20
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 135
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 22
The thread is
tangled on the
wrong side of
the fabric.
You have not threaded the upper
thread properly.
Correct the upper threading.
page 24
Symptom
Probable Cause
Remedy
Reference