Brother International CS-6000/6000b/6000t/6000i Operation Manual - Page 55
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 You have not inserted the needle properly. Insert the needle properly. page 17 The area around the hole in the needle plate is scratched. Replace the needle plate. Contact your retailer or the nearest authorised service center. - The upper thread breaks. The area around the hole in the presser foot is scratched. Replace the presser foot. Contact your retailer or the nearest authorised service center. - The bobbin case is scratched, or has a burr on it. Replace the bobbin case. Contact your retailer or the nearest authorised 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 9 You have not wound the bobbin thread properly. Wind the bobbin thread properly. page 9 The bobbin is scratched or does not turn smoothly. Replace the bobbin. - The lower thread is tangled The thread is tangled. or breaks. Remove the tangled thread and clean the bobbin case. page 50 4 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 9 Bobbin is set incorrectly. Reset the bobbin thread correctly. page 11, 12 You have not threaded the upper thread properly. Correct the upper threading. page 13 You have not wound the bobbin thread properly. Wind the bobbin thread properly. page 9 The thread tension is incorrect. You have not threaded the right combination of thread and needle for the fabric you are using. You have not attached the presserfoot holder properly. Choose a thread and needle that are appropriate for the type of fabric. Attach the presser-foot holder properly. page 16 page 21 The thread tension is incorrect. Adjust the tension of the upper thread. page 25 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 9 Bobbin is set incorrectly. Reset the bobbin thread correctly. page 11, 12 You have not threaded the upper thread properly or fitted the bobbin properly. Thread the upper thread and wind the bobbin thread properly. page 11, 12, 13 You have not fitted the spool properly. Fit the spool properly. - 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 16 The needle is bent or blunt. Replace the needle. page 17 If you are sewing thin fabric, the stitch is too thick. Sew with stabiliser material under the fabric. page 26 The thread tension is incorrect. Adjust the tension of the upper thread. page 25 53