Troubleshooting; List Of Symptoms - Brother 888-L91 Operation Manual

Troubleshooting

Troubleshooting
If the machine stops operating correctly, check the following possible problems before requesting service.
You can solve most problems by yourself. If you need additional help, the Brother Solutions Center offers the latest FAQs
and troubleshooting tips. Visit us at " http://support.brother.com/ ".
If the problem persists, contact your Brother dealer or the nearest Brother authorized service center.

List of symptoms

■ Getting ready
Symptom
Needle is not in the correct position.
Cannot thread the
needle.
Needle is installed incorrectly.
Needle is turned, bent or the point is dull.
Upper threading is incorrect.
The needle threader hook is bent and does not
pass through the eye of the needle.
The needle threader lever cannot be moved or
returned to its original position.
The thread is not passed through the bobbin
Bobbin thread
winding thread guide correctly.
does not wind
neatly on the
The thread that was pulled out was not wound
bobbin.
onto the bobbin correctly.
The empty bobbin was not set on the pin
properly.
You have not wound the bobbin thread properly.
While winding the
While initially winding thread on the bobbin the
bobbin, the bobbin
bobbin thread is not properly inserted into the
thread was wound
guides.
below the bobbin
winder seat.
Bobbin is set incorrectly.
The bobbin thread
cannot be pulled
up.
Main power switch is not turned on.
Nothing appears in
the LCD.
The plug of the power cord is not inserted into
an electrical outlet.
Condensation has formed on the LCD screen.
The LCD screen is
fogged up.
The operation keys A glove is worn when the keys are pressed.
do not respond.
The keys are pressed with a fingernail.
A non-electrostatic touch pen is being used.
The operation keys The sensitivity of the operation keys is not set
do not respond, or
for the user.
the sensitivity is
too strong.
A-6
Probable Cause Remedy
Press the "Needle position" button to raise the
needle.
Reinstall the needle correctly.
Replace the needle.
Check the steps for threading the machine and
rethread the machine.
Contact your authorized dealer or the nearest
Brother authorized service center.
Contact your authorized dealer or the nearest
Brother authorized service center.
Correctly pass the thread through the bobbin
winding thread guide.
Wind the thread that was pulled off around the
bobbin 5 or 6 times clockwise.
Set the empty bobbin on the pin and slowly turn
the bobbin until you hear it click in place.
After removing the thread wound below the
bobbin winder seat, wind the bobbin correctly.
Follow the drawn images on the top of the
machine for guidance when threading the
machine for bobbin winding.
Reset the bobbin correctly.
Turn the main power to ON.
Insert the plug of the power cord into an
electrical outlet.
After a while, the cloudiness will disappear.
Directly touch the operation keys with your
finger.
When using a commercially available touch pen,
make sure that it is compatible with capacitive
sensing.
Adjust the sensitivity of the operation keys.
Reference
B-4
B-23
B-23
B-19
–
–
B-16
B-16
B-14
B-14
B-17
B-8
B-8
–
B-4
B-12