Brother NV870SE Operation Manual page 92

Symptom
The sewing light is damaged.
The sewing light
does not come on.
"Light" is set to "OFF" in the settings screen.
Embroidery unit is not attached correctly.
Embroidery unit
does not operate.
Embroidery frame was attached before the unit
was initialized.
■ While embroidering
Symptom
"Start/Stop" button was not pushed.
Machine does not
operate.
The bobbin winder shaft is pushed to the right.
There is no pattern selected.
Presser foot is not lowered.
Frame-securing lever was not lowered.
Needle is installed incorrectly.
Needle breaks.
Needle clamp screw is not tightened.
Needle is turned or bent.
Using improper needle or thread for the
selected fabric.
Upper thread tension is too tight.
Spool cap is set incorrectly.
There are scratches around the opening in the
needle plate.
There are scratches around the opening in the
presser foot.
There are scratches on the bobbin case.
Needle is defective.
A bobbin designed specifically for this machine
is not used.
Upper threading is incorrect.
Bobbin is set incorrectly.
Embroidery foot is attached incorrectly.
Stabilizer is not attached to fabric being
Needle breaks.
embroidered.
Bobbin thread is incorrectly wound.
Probable Cause
Probable Cause
Remedy
Contact your authorized dealer or the nearest
Brother authorized service center.
Change the setting to "ON".
Reattach the embroidery unit correctly.
Remove the embroidery frame, and then
perform the initialization process correctly.
Remedy
Press the "Start/Stop" button.
Move the bobbin winder shaft to the left.
Select a pattern.
Lower the presser foot.
Lower frame-securing lever after installing
embroidery frame.
Reinstall the needle correctly.
Tighten the needle clamp screw.
Replace the needle.
Check the information about the needle and
thread to be used.
Adjust the thread tension.
Check the method for attaching the spool cap,
then reattach the spool cap.
Replace the needle plate, or consult your
authorized Brother dealer.
Replace the presser foot, or consult your
authorized Brother dealer.
Replace the bobbin case, or consult your
authorized Brother dealer.
Replace the needle.
Incorrect bobbins will not work properly. Only
use a bobbin designed specifically for this
machine.
Check the steps for threading the machine and
rethread the machine.
Reset the bobbin correctly.
Attach the embroidery foot correctly.
Attach stabilizer.
Use a correctly wound bobbin.
Troubleshooting
Reference
-
B-11
B-26
B-27
Reference
B-4
B-14
B-34
B-2
B-33
B-23
A
B-23
B-23
B-23
E-26
B-14
-
A-5
A-2
B-23
B-14
B-19
B-17
A-5
B-29
B-14
Appendix A-7