Brother NV4750D Sewing Machine User Manual


 
TROUBLESHOOTING
Appendix
241
8
Cannot lower the
presser foot with the
presser foot lever
Presser foot was raised using the “Presser Foot
Lifter” button.
Press the “Presser Foot Lifter” button to lower
the presser foot.
3
Thread tension is
incorrect
Upper threading is incorrect. Check the steps for threading the machine
and rethread the machine.
29
Bobbin is set incorrectly. Reset the bobbin. (If needle plate was
removed. reinstall needle plate and tighten
screws prior to installing bobbin case.)
26
Using improper needle or thread for the
selected fabric.
Check the “Fabric/Thread/Needle
Combination” chart.
41
Presser foot holder is not attached correctly. Reattach the presser foot holder correctly. 38
Thread tension is set incorrectly. Adjust the thread tension. 50, 174
Character pattern
does not turn out
Wrong presser foot was used. Attach the correct presser foot. “STITCH SETTING
CHART”
Pattern adjustment settings were set incorrectly. Revise the pattern adjustment settings. 121
Did not use a stabilizer material on thin fabrics
or stretch fabrics.
Attach a stabilizer material. 120
Thread tension is set incorrectly. Adjust the thread tension. 50, 174
Embroidery pattern
does not sew out
correctly
Thread is twisted. Use scissors, etc., to cut the twisted thread
and remove it from the race, etc.
Fabric was not inserted into the frame correctly
(fabric was loose, etc.).
If the fabric is not stretched tight in the frame,
the pattern may turn out poorly or there may
be shrinkage of the pattern. Set the fabric into
the frame correctly.
159
Stabilizing material was not attached. Always use stabilizing material, especially
with stretch fabrics, lightweight fabrics, fabrics
with a coarse weave, or fabrics that often
cause pattern shrinkage. See your authorized
dealer for the proper stabilizer.
157
There was an object placed near the machine,
and the carriage or embroidery frame hit the
object during sewing.
If the frame bumps something during sewing,
the pattern will turn out poorly. Do not place
anything in the area where the frame may
bump it during sewing.
165
Fabric outside the frame edges interferes with
the sewing arm, so the embroidery unit cannot
move.
Reinsert the fabric in the embroidery frame so
that the excess fabric is away from the sewing
arm, and rotate the pattern 180 degrees.
159
Fabric is too heavy, so the embroidery unit
cannot move freely.
Place a large thick book or similar object
under the arm head to lightly lift the heavy
side and keep it level.
Fabric is hanging off the table. If the fabric is hanging off the table during
embroidery, the embroidery unit will not move
freely. Place the fabric so that it does not hang
off the table or hold the fabric to keep it from
dragging.
165
Fabric is snagged or caught on something. Stop the machine and place the fabric so that
it does not get caught or snagged.
Embroidery frame was removed during sewing
(for example, to reset the bobbin). The presser
foot was bumped or moved while removing or
attaching the embroidery frame, or the
embroidery unit was moved.
If the presser foot is bumped or the
embroidery unit is moved during sewing, the
pattern will not turn out. Be careful when
removing or reattaching the embroidery frame
during sewing.
170
Loops appear on the
surface of the fabric
when embroidering
The thread tension is incorrectly set. Adjust the thread tension. 174
The tension of the upper thread is incorrectly set
for the combination of the fabric, thread and
pattern being used.
Use the embroidery needle plate cover. 165
The combination of the bobbin case and bobbin
thread is incorrect.
Change the bobbin case or bobbin thread so
that the correct combination is used.
165
Problem Cause Solution Page