Brother International Innov-is PS500 Operation Manual - Page 119

Maintenance And Troubleshooting

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Troubleshooting Symptom Needle breaks. Upper thread breaks. Probable Cause Remedy Reference Stitch length is too short. Adjust the stitch length. B-38 Bobbin thread is incorrectly wound. Use a correctly wound bobbin. Machine is not threaded correctly (used the Rethread the machine correctly. wrong spool cap, spool cap is loose, the thread did not catch the needle bar threader, etc.). Knotted or tangled thread is being used. Remove any knots or tangles. B-13 B-19 - The selected needle is not appropriate for the thread being used. Upper thread tension is too tight. Thread is tangled. Select a needle that is appropriate for the type B-26 of thread being used. Adjust the thread tension. B-39 Use scissors, etc., to cut the tangled thread and A-6 remove it from the race, etc. Needle is turned, bent or the point is dull. Needle is installed incorrectly. There are scratches around the opening in the needle plate. Replace the needle. Reinstall the needle correctly. Replace the needle plate, or consult your authorized Brother dealer. B-27 B-27 A-8 * There is a notch on the left side of the opening in the needle plate. This is not a scratch. a A MAINTENANCE AND TROUBLESHOOTING 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. Using improper needle or thread for the selected fabric. Check the "Fabric/Thread/Needle Combinations" chart. B-26 While sewing, the thread became knotted or tangled. Rethread upper and lower thread. B-13, B-19 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 The thread is tangled on the wrong side of the fabric. Upper threading is incorrect. Check the steps for threading the machine and rethread the machine. Be sure that the presser foot is in the raised position when threading the machine so that the upper thread sets properly in the upper tension. B-19, A-6 Using improper needle or thread for the selected fabric. Check the "Fabric/Thread/Needle Combinations" chart. B-26 The upper thread is The bobbin thread is incorrectly installed. too tight. Correctly install the bobbin thread. B-16, A-5 Appendix A-17

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Troubleshooting
Appendix
A-17
MAINTENANCE AND TROUBLESHOOTING
A
Needle breaks.
Stitch length is too short.
Adjust the stitch length.
B-38
Bobbin thread is incorrectly wound.
Use a correctly wound bobbin.
B-13
Upper thread
breaks.
Machine is not threaded correctly (used the
wrong spool cap, spool cap is loose, the thread
did not catch the needle bar threader, etc.).
Rethread the machine correctly.
B-19
Knotted or tangled thread is being used.
Remove any knots or tangles.
–
The selected needle is not appropriate for the
thread being used.
Select a needle that is appropriate for the type
of thread being used.
B-26
Upper thread tension is too tight.
Adjust the thread tension.
B-39
Thread is tangled.
Use scissors, etc., to cut the tangled thread and
remove it from the race, etc.
A-6
Needle is turned, bent or the point is dull.
Replace the needle.
B-27
Needle is installed incorrectly.
Reinstall the needle correctly.
B-27
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
Using improper needle or thread for the
selected fabric.
Check the “Fabric/Thread/Needle
Combinations” chart.
B-26
While sewing, the thread became knotted or
tangled.
Rethread upper and lower thread.
B-13, B-19
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
The thread is
tangled on the
wrong side of the
fabric.
Upper threading is incorrect.
Check the steps for threading the machine and
rethread the machine.
Be sure that the presser foot is in the raised
position when threading the machine so that the
upper thread sets properly in the upper tension.
B-19, A-6
Using improper needle or thread for the
selected fabric.
Check the “Fabric/Thread/Needle
Combinations” chart.
B-26
The upper thread is
too tight.
The bobbin thread is incorrectly installed.
Correctly install the bobbin thread.
B-16, A-5
Symptom
Probable Cause
Remedy
Reference
a