Brother NQ3700D Operation Manual page 109

e Lift up the fabric and cut the threads below it.
If the fabric can be removed, remove it. Continue with
the following steps to clean the race.
f Remove the needle plate cover.
• Refer to "Cleaning the race" on page 103.
g Cut out the tangled threads, and then remove the
bobbin.
h Remove the bobbin case.
If threads remain in the bobbin case, remove them.
Use the cleaning brush or a vacuum cleaner mini
i
attachment to remove any lint or dust from the race
and its surrounding area.
a
If the fabric could be removed.
If the fabric could not be removed.
Note
• Compressed can air is not recommended to be
used.
j Use the included disc-shaped screwdriver to loosen the
two screws on the needle plate.
Note
• Be careful not to drop the removed screws in the
machine.
1 Cleaning brush
2 Race
p
Continue with step .
j
Continue with step .
k Slightly lift up the needle plate, cut any tangled
threads, and then remove the needle plate.
Remove the fabric and threads from the needle plate.
If the fabric cannot be removed, even after completing
these steps, contact your nearest Brother authorized
service center.
l Remove any threads in the race and around the feed
dogs.
m Turn the handwheel to raise the feed dogs.
n Align the two screw holes in the needle plate with the
two holes at the needle plate mounting base, and then
fit the needle plate onto the machine.
o Lightly finger-tighten the screw on the right side of the
needle plate. Then, use the disc-shaped screwdriver to
firmly tighten the screw on the left side. Finally, firmly
tighten the screw on the right side.
Turn the handwheel to check that the feed dogs move
smoothly and do not contact the edges of the slots in the
needle plate.
a
1 Correct position of feed dogs
2 Incorrect position of feed dogs
p Insert the bobbin case by following step
"Cleaning the race" on page 103.
q Attach the needle plate cover according to step
"Cleaning the race" on page 103.
r Check the condition of the needle, and then install it.
If the needle is in a poor condition, for example, if it is
bent, be sure to install a new needle.
• Refer to "Checking the needle" on page 28 and
"Replacing the needle" on page 28.
Memo
• Since the needle may have been damaged when
the fabric was caught in the machine, we
recommend replacing it with a new one.
Troubleshooting
5
j
in
k
in
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