Brother International Innov-is NQ550PRW Operation Manual - Page 118

While sewing

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Troubleshooting ■ While sewing Symptom Probable Cause Remedy Reference Machine does not operate. "Start/Stop" button was not pressed. Press the "Start/Stop" button. The bobbin winder shaft is pushed to the right. Move the bobbin winder shaft to the left. There is no pattern selected. Select a pattern. Presser foot is not lowered. Lower the presser foot. "Start/Stop" button was pushed with the foot controller attached. Remove the foot controller, or use the foot controller to operate the machine. The "Start/Stop" button was pressed while the machine is set for the sewing speed controller to control the zigzag stitch width. Use the foot controller instead of the "Start/ Stop" button to operate the machine, or press to turn off the width control function. B-33 B-13 B-32 B-33 B-34 B-34 Needle breaks. Needle is installed incorrectly. Needle clamp screw is not tightened. Needle is turned or bent. Using improper needle or thread for the selected fabric. Wrong presser foot was used. Upper thread tension is too tight. Fabric is pulled during sewing. Spool cap is set incorrectly. There are scratches around the opening in the needle plate. Reinstall the needle correctly. B-27 Tighten the needle clamp screw. B-27 Replace the needle. B-27 Check the "Fabric/Thread/Needle Combinations" chart. B-26 Use the recommended presser foot. B-30 Adjust the thread tension setting. B-39 Do not pull the fabric during sewing. - Check the method for attaching the spool cap, B-13 then reattach the spool cap. Replace the needle plate, or consult your A-8 authorized Brother dealer. * There is a notch on the left side of the opening in the needle plate. This is not a scratch. a A-16 1 Notch There are scratches around the opening in the Replace the presser foot, or consult your presser foot. authorized Brother dealer. B-29 There are scratches on the bobbin case. Replace the bobbin case, or consult your A-2 authorized Brother dealer. Needle is defective. Replace the needle. B-27 A bobbin designed specifically for this machine Incorrect bobbins will not work properly. Only is not used. use a bobbin designed specifically for this machine. B-13 Upper threading is incorrect. Check the steps for threading the machine and B-19 rethread the machine. Bobbin is set incorrectly. Reset the bobbin thread correctly. B-16 Presser foot is attached incorrectly. Attach the presser foot correctly. B-29 Screw of the presser foot holder is loose. Securely tighten the screw of the presser foot. B-30 Fabric is too thick. Use fabric that the needle can pierce when the B-26, S-4 handwheel is turned. Fabric is fed forcefully when sewing thick fabric Allow the fabric to be fed without being S-4 or thick seams. forcefully pushed.

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Troubleshooting
A-16
■
While sewing
Symptom
Probable Cause
Remedy
Reference
Machine does not
operate.
“Start/Stop” button was not pressed.
Press the “Start/Stop” button.
B-33
The bobbin winder shaft is pushed to the right.
Move the bobbin winder shaft to the left.
B-13
There is no pattern selected.
Select a pattern.
B-32
Presser foot is not lowered.
Lower the presser foot.
B-33
“Start/Stop” button was pushed with the foot
controller attached.
Remove the foot controller, or use the foot
controller to operate the machine.
B-34
The “Start/Stop” button was pressed while the
machine is set for the sewing speed controller
to control the zigzag stitch width.
Use the foot controller instead of the “Start/
Stop” button to operate the machine, or press
to turn off the width control function.
B-34
Needle breaks.
Needle is installed incorrectly.
Reinstall the needle correctly.
B-27
Needle clamp screw is not tightened.
Tighten the needle clamp screw.
B-27
Needle is turned or bent.
Replace the needle.
B-27
Using improper needle or thread for the
selected fabric.
Check the “Fabric/Thread/Needle
Combinations” chart.
B-26
Wrong presser foot was used.
Use the recommended presser foot.
B-30
Upper thread tension is too tight.
Adjust the thread tension setting.
B-39
Fabric is pulled during sewing.
Do not pull the fabric during sewing.
–
Spool cap is set incorrectly.
Check the method for attaching the spool cap,
then reattach the spool cap.
B-13
There are scratches around the opening in the
needle plate.
*
There is a notch on the left side of the
opening in the needle plate. This is not a
scratch.
1
Notch
Replace the needle plate, or consult your
authorized Brother dealer.
A-8
There are scratches around the opening in the
presser foot.
Replace the presser foot, or consult your
authorized Brother dealer.
B-29
There are scratches on the bobbin case.
Replace the bobbin case, or consult your
authorized Brother dealer.
A-2
Needle is defective.
Replace the needle.
B-27
A bobbin designed specifically for this machine
is not used.
Incorrect bobbins will not work properly. Only
use a bobbin designed specifically for this
machine.
B-13
Upper threading is incorrect.
Check the steps for threading the machine and
rethread the machine.
B-19
Bobbin is set incorrectly.
Reset the bobbin thread correctly.
B-16
Presser foot is attached incorrectly.
Attach the presser foot correctly.
B-29
Screw of the presser foot holder is loose.
Securely tighten the screw of the presser foot.
B-30
Fabric is too thick.
Use fabric that the needle can pierce when the
handwheel is turned.
B-26, S-4
Fabric is fed forcefully when sewing thick fabric
or thick seams.
Allow the fabric to be fed without being
forcefully pushed.
S-4
a