Brother 888-K80 Operation Manual page 55

Symptom, Cause/solution
The operation keys do not respond, or the key
response is too sensitive.
A glove is worn when the keys are touched.
The keys are touched with a fingernail.
A non-electrostatic touch pen is being used.
The sensitivity of the operation keys is not set for
the user.
The sewing light does not come on.
[Light] is set to [OFF] in the settings screen.
Embroidery unit does not operate.
Embroidery unit is not attached correctly.
Cannot retrieve an embroidery pattern via wireless
network.
Embroidery patterns unavailable for this machine
cannot be retrieved.
• Check the embroidery data and the message
displayed on the application.
■ While embroidering
Symptom, Cause/solution
Machine does not operate.
"Start/Stop" button was not pressed.
The bobbin winder shaft is pushed to the right.
There is no pattern selected.
Presser foot is not lowered.
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.
Upper thread tension is too tight.
Spool of thread is set incorrectly.
There are scratches around the opening in the
needle plate.
There are scratches near the hole in the
embroidery foot.
There are scratches on the bobbin case.
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
embroidered.
Bobbin thread is incorrectly wound.
Reference Symptom, Cause/solution
Upper thread breaks.
Machine is not threaded correctly (used the wrong
spool cap, spool cap is loose, the thread did not
12, 14
catch the needle bar threader, etc.).
Knotted or tangled thread is being used.
Upper thread tension is too tight.
Thread is tangled.
13 Needle is turned, bent or the point is dull.
Needle is installed incorrectly.
There are scratches around the opening in the
25
needle plate.
There are scratches near the hole in the
embroidery foot.
There are scratches on the bobbin case.
–
Using improper needle or thread for the selected
fabric.
A bobbin designed specifically for this machine is
not being used.
The thread is tangled on the wrong side of the fabric.
Reference
Upper threading is incorrect.
Using improper needle or thread for the selected
fabric.
34
The upper thread is too tight.
17
The bobbin thread is incorrectly installed.
31
Bobbin thread breaks.
34
Bobbin is set incorrectly.
Bobbin thread is incorrectly wound.
24
A scratched bobbin is being used.
24
Thread is tangled.
23
A bobbin designed specifically for this machine is
23
not being used.
Fabric puckers.
36
There is a mistake in the upper or bobbin
17
threading.
*
Spool of thread is set incorrectly.
Using improper needle or thread for the selected
*
fabric.
Needle is turned, bent or the point is dull.
*
Skipped stitches
17
Machine is threaded incorrectly.
21
Needle is turned, bent or the point is dull.
19
Needle is installed incorrectly.
51
Dust or lint has collected under the needle plate.
27
Not embroidering
17
Needle is turned, bent or the point is dull.
Bobbin is set incorrectly.
Upper threading is incorrect.
Troubleshooting
Reference
21
–
36
21
23
24
*
3
*
*
23
17
21
23
19
19
17
19
21
17
17, 21
17
23
23
17, 21
23
24
49
23
19
21
53