Brother International XL-3500i Operation Manual - Page 74
The upper, thread breaks., The lower, thread is tangled, or breaks., The thread ten, sion is
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Symptom Possible cause How to put it right Reference The area around the hole in the needle plate is scratched. Replace the needle plate. Contact your retailer or the nearest authorized service center. - The upper The area around the hole in the presser foot is scratched. Replace the presser foot. Contact your retailer or the nearest authorized service center. - thread breaks. The bobbin case is scratched, or has a burr on it. Replace the bobbin case. Contact your retailer or the nearest authorized service center. - You have not used a bobbin that has been designed for this machine. Incorrect bobbins will not work properly. Only use a bobbin that has been designed for this machine. page 26 You have not wound the bobbin thread properly. Wind the bobbin properly. page 26 The lower thread is tangled or breaks. The bobbin is scratched or does not turn smoothly. The thread is tangled. You have not used a bobbin that has been designed for this machine. Replace the bobbin. Remove the tangled thread and clean the bobbin case. Incorrect bobbins will not work properly. Only use a bobbin that has been designed for this machine. - page 70 page 26 Bobbin is set incorrectly. Reset the bobbin thread correctly. page 28-31 You have not threaded the upper thread properly. Correct the upper threading. page 32 You have not wound the bobbin thread properly. Wind the bobbin thread properly. page 26 The thread ten- You have not threaded the right combination of thread and needle for the fabric you are using. Choose a thread and needle that are appropriate for the type of fabric. page 39 sion is incorrect. You have not attached the presser foot holder properly. Attach the presser foot holder properly. - The thread tension is incorrect. Adjust the tension of the upper thread. page 38 6 You have not used a bobbin that has been designed for this machine. Incorrect bobbins will not work properly. Only use a bobbin that has been designed for this machine. page 26 Bobbin is set incorrectly. Reset the bobbin thread correctly. page 28-31 You have not threaded the upper thread properly or fitted the bobbin properly. Thread the upper thread and wind the bobbin thread properly. page 28-33 You have not fitted the spool properly. Fit the spool properly. page 32, 37 The fabric is wrinkled. You have not used the right combination of fabric, thread and needle. Choose a thread and needle that are appropriate for the type of fabric. page 39 The needle is bent or blunt. Replace the needle. page 16 If you are sewing thin fabric, the stitch is too thick. Sew with stabiliser material under the fabric. - The thread tension is incorrect. Adjust the tension of the upper thread. page 38 73