TROUBLESHOOTING

List of Symptoms

Problem

Cause

Solution

Page

The thread is tangled

Upper threading is incorrect.

Check the steps for threading the machine

B-48

on the wrong side of

 

and rethread the machine.

 

the fabric.

 

 

 

Using improper needle or thread for the

Check the “Fabric/Thread/Needle

B-59

 

 

selected fabric.

Combinations” chart.

 

 

 

 

 

The upper thread is

The bobbin thread is incorrectly installed.

Correctly install the bobbin thread.

B-45

too tight.

 

 

 

 

 

 

 

Cannot thread the

Needle is not in the correct position.

Press the “Needle Position” button to raise

B-14

needle

 

the needle.

 

 

 

 

 

 

Needle is installed incorrectly.

Reinstall the needle correctly.

B-57

 

 

 

 

 

Needle is turned, bent or the point is dull.

Replace the needle.

B-57

 

 

 

 

Cannot lower the

Presser foot was raised using the “Presser Foot

Press the “Presser Foot Lifter” button to

B-14

presser foot with the

Lifter” button.

lower the presser foot.

 

presser foot lever

 

 

 

 

 

 

 

Thread tension is

Upper threading is incorrect.

Check the steps for threading the machine

B-48

incorrect

 

and rethread the machine.

 

 

 

 

 

 

Bobbin is set incorrectly.

Reset the bobbin. (If needle plate was

B-45

 

 

removed, reinstall needle plate and tighten

 

 

 

screws prior to installing bobbin case.)

 

 

 

 

 

 

Using improper needle or thread for the

Check the “Fabric/Thread/Needle

B-59

 

selected fabric.

Combination” chart.

 

 

 

 

 

 

Presser foot holder is not attached correctly.

Reattach the presser foot holder correctly.

B-55

 

 

 

 

 

Thread tension is set incorrectly.

Adjust the thread tension.

S-12, E-30

 

 

 

 

 

Bobbin thread is incorrectly wound.

Use a correctly wound bobbin.

B-40

 

 

 

 

 

Needle is turned, bent or the point is dull.

Replace the needle.

B-57

 

 

 

 

Upper thread breaks

Machine is not threaded correctly (used the

Rethread the machine correctly.

B-48

 

wrong spool cap, spool cap is loose, the thread

 

 

 

did not catch the needle bar threader, etc.)

 

 

 

 

 

 

 

Needle is turned, bent or the point is dull.

Replace the needle.

B-57

 

 

 

 

 

There are scratches on the bobbin case.

Replace the bobbin case, or consult your

A-19

 

 

authorized dealer.

 

 

 

 

 

 

Upper thread tension is too strong.

Adjust the thread tension.

S-12, E-30

 

 

 

 

 

Using improper needle or thread for the

Check the “Fabric/Thread/Needle

B-59

 

selected fabric.

Combinations” chart.

 

 

 

 

 

 

Thread is twisted.

Use scissors, etc., to cut the twisted thread

 

 

and remove it from the race, etc.

 

 

 

 

 

 

There are scratches near the hole of the needle

Replace the needle plate, or consult your

S-26

 

plate.

authorized dealer.

 

 

 

 

 

 

There are scratches near the hole in the presser

Replace the presser foot, or consult your

B-55

 

foot.

authorized dealer.

 

 

 

 

 

 

Needle is installed incorrectly.

Reinstall the needle correctly.

B-57

 

 

 

 

 

Thread is knotted or tangled.

Rethread upper and lower thread.

B-45, B-48

 

 

 

 

 

A bobbin designed specifically for this machine

Incorrect bobbins will not work properly. Only

B-45

 

is not used.

use a bobbin designed specifically for this

 

 

 

machine.

 

 

 

 

 

Bobbin thread breaks

Bobbin is set incorrectly.

Reset the bobbin thread correctly.

B-45

 

 

 

 

 

There are scratches on the bobbin or it doesn’t

Replace the bobbin.

B-45

 

rotate properly.

 

 

 

 

 

 

 

Thread is twisted.

Use scissors, etc. to cut the twisted thread

 

 

and remove it from the race, etc.

 

 

 

 

 

 

A bobbin designed specifically for this machine

Incorrect bobbins will not work properly. Only

B-45

 

is not used.

use a bobbin designed specifically for this

 

 

 

machine.

 

 

 

 

 

Bobbin thread does

The thread is not passed through the bobbin

Correctly pass the thread through the bobbin

B-41

not wind neatly on the

winding thread guide correctly.

winding thread guide.

 

bobbin.

 

 

 

Bobbin spins slowly.

Press [+] in the bobbin winding window to

B-43

 

 

 

increase the bobbin winding speed.

 

 

 

 

 

 

The thread that was pulled out was not wound

Wind the thread that was pulled off around

B-42

 

onto the bobbin correctly.

the bobbin 5 or 6 times clockwise.

 

 

 

 

 

A-30