Brother SB3129 - Manual (Page 146)

APPENDIX —————————————————————————————————————————————————————
140
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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