Brother Innov-is NV55P Operation Manual page 142

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APPENDIX
Symptom
Dust has accumulated in the feed
dogs or in the bobbin case.
The upper thread was not threaded
correctly.
A high-pitched
The bobbin case is scratched, or has
noise is made while
a burr on it.
sewing.
A bobbin designed specifically for
this machine is not used.
The needle has not been raised to the
The needle threader
correct position.
cannot be used.
The needle is incorrectly installed.
The presser foot that is used is not
appropriate for the type of stitch that
you wish to sew.
The stitch is not
The thread tension is incorrect.
sewn correctly.
The thread is tangled, for example, in
the bobbin case.
The feed dogs are lowered.
The stitch is too short.
The presser foot that is used is not
appropriate for the type of stitch that
The fabric does not you wish to sew.
feed.
The thread is tangled, for example, in
the bobbin case.
Zigzag foot "J" is slanted on a thick
seam at the beginning of stitching.
Nothing appears in The brightness of the LCD is either
the LCD. too light or too dark.
While winding the
bobbin, the bobbin
You have not wound the bobbin
thread was wound
thread properly.
below the bobbin
winder seat.
140
Probable Cause Remedy
Clean the race.
Correct the upper threading.
Replace the bobbin case. Contact
your dealer or the nearest
authorized service center.
Incorrect bobbins will not work
properly. Only use a bobbin
designed specifically for this
machine.
Press the needle position button.
Correctly install the needle.
Attach the presser foot that is
appropriate for the type of stitch
that you wish to sew.
Adjust the tension of the upper
thread.
Remove the tangle thread. If the
thread is tangled in the bobbin
case, clean the race.
Slide the drop feed lever to the
right. (as seen from the rear of the
machine)
Lengthen the stitch length.
Attach the presser foot that is
appropriate for the type of stitch
that you wish to sew.
Remove the tangle thread. If the
thread is tangled in the bobbin
case, clean the race.
Use the presser foot locking pin
(black button on the left side) on
zigzag foot "J" to keep the presser
foot level while sewing.
Adjust the brightness of the LCD.
After removing the thread wound
below the bobbin winder seat,
wind the bobbin correctly.
Reference
page 126
page 28
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page 31
page 39
page 120
page 57
page 126
page 97
page 59
page 120
page 126
page 63
page 144
page 135