MODEL REFERENCE

Brother LX-3125/3125E

13 troubleshooting topics

The checks and guides below come from the official manuals for this model.

Find a code or problem on this model

Troubleshooting

Find the problem you are experiencing

The sewing machine does not work4 checks

The machine is unplugged.: Connect the machine to the power outlet.
The main power switch is off.: Switch on the main power.
The bobbin-winder shaft is pushed right.: Slide the bobbin-winder shaft left.
The foot controller is being used incorrectly.: Use the foot controller correctly.

The needle breaks11 checks

The needle is installed incorrectly.: Install the needle correctly.
The needle clamp screw is loose.: Tighten the needle clamp screw with the oval screwdriver.
The needle is bent or dull.: Replace the needle.
The fabric, thread, and needle are not properly matched.: Select thread and a needle suited to the fabric.
The presser foot does not suit the selected stitch.: Attach the presser foot suited to the stitch.
The upper thread tension is too tight.: Reduce the upper thread tension.
The fabric is being pulled too hard.: Guide the fabric lightly.
The area around the needle plate hole is scratched.: Replace the needle plate. Contact your retailer or nearest authorized service center.
There are scratches around the presser foot hole.: Fit a replacement presser foot. Contact the retailer or your nearest authorized service center.
The bobbin case is scratched.: Replace the bobbin case. Contact your retailer or nearest authorized service center.
The bobbin is not designed for this machine.: Use only a bobbin designed for this machine, as other bobbins will not work properly.

The upper thread breaks11 checks

The upper thread is threaded incorrectly.: Rethread the upper thread correctly.
The thread has knots or tangles.: Remove the knots or tangles.
The needle does not suit the thread being used.: Choose a needle suited to the stitch type.
The upper thread tension is too tight.: Reduce the upper thread tension.
Thread is tangled in the shuttle race.: Remove tangled thread and clean the shuttle race.
The needle is bent or dull.: Replace the needle.
The needle is inserted incorrectly.: Insert the needle correctly.
The area around the needle plate hole is scratched.: Replace the needle plate. Contact your retailer or nearest authorized service center.
There are scratches around the presser foot hole.: Fit a replacement presser foot. Contact the retailer or your nearest authorized service center.
The bobbin case is scratched or has a burr.: Replace the bobbin case. Contact your retailer or nearest authorized service center.
The bobbin is not designed for this machine.: Use only a bobbin designed for this machine, as other bobbins will not work properly.

The lower thread is tangled or breaks5 checks

The bobbin thread was wound incorrectly.: Wind the bobbin thread correctly.
The bobbin is scratched or does not turn smoothly.: Replace the bobbin.
The thread is tangled.: Remove tangled thread and clean the shuttle race.
The bobbin is not designed for this machine.: Use only a bobbin designed for this machine, as other bobbins will not work properly.
The bobbin is set incorrectly.: Reset the bobbin thread correctly.

The thread tension is incorrect7 checks

The upper thread is threaded incorrectly.: Rethread the upper thread correctly.
The bobbin thread is wound incorrectly.: Wind the bobbin thread correctly.
The thread and needle do not suit the fabric.: Choose a thread and needle suited to the fabric.
The presser foot holder is attached incorrectly.: Refit the presser foot holder correctly.
The thread tension is set incorrectly.: Adjust the upper thread tension.
The bobbin is not designed for this machine.: Use only a bobbin designed for this machine, as other bobbins will not work properly.
The bobbin is set incorrectly.: Reset the bobbin thread correctly.

The fabric is wrinkled6 checks

The upper thread is threaded incorrectly or the bobbin is fitted incorrectly.: Thread the upper thread and wind the bobbin thread correctly.
The spool is fitted incorrectly.: Fit the spool correctly.
The thread and needle do not suit the fabric.: Choose a thread and needle suited to the fabric.
The needle is bent or dull.: Replace the needle.
When sewing thin fabric, the stitch is too thick.: Place stabiliser material under the fabric while sewing.
The thread tension is set incorrectly.: Adjust the upper thread tension.

Stitches are skipped5 checks

The upper thread is threaded incorrectly.: Rethread the upper thread correctly.
The fabric, thread, and needle are not properly matched.: Select thread and a needle suited to the fabric.
The needle is bent or dull.: Replace the needle.
The needle is inserted incorrectly.: Insert the needle correctly.
Dust has collected under the needle plate or in the shuttle race.: Remove the needle plate cover and clean the plate and shuttle race.

There is a high-pitched noise while sewing5 checks

Dust has collected in the feed dogs or shuttle race.: Clean the shuttle race.
The upper thread is threaded incorrectly.: Rethread the upper thread correctly.
The bobbin case is scratched.: Replace the bobbin case. Contact your retailer or nearest authorized service center.
The bobbin is not designed for this machine.: Use only a bobbin designed for this machine, as other bobbins will not work properly.
The machine has not been oiled enough.: Oil the machine weekly if used over an hour a day; oil it daily with more frequent use.

The stitch is not sewn correctly3 checks

The presser foot does not suit the selected stitch.: Attach the presser foot suited to the stitch.
The thread tension is set incorrectly.: Adjust the upper thread tension.
Thread is tangled in the shuttle race.: Remove tangled thread and clean the shuttle race.

The fabric does not feed2 checks

The fabric, thread, and needle are not properly matched.: Select thread and a needle suited to the fabric.
Thread is tangled in the shuttle race.: Remove tangled thread and clean the shuttle race.

The sewing light bulb does not come on1 check

The thread is tangled on the wrong side of the fabric1 check

The upper thread is threaded incorrectly.: Rethread the upper thread correctly.

The upper thread is too tight1 check

The bobbin thread is installed incorrectly.: Install the bobbin thread correctly.