Brother International CS7130 Operation Manual - Page 71
The upper thread, breaks., The lower thread is, tangled or breaks., The fabric is, wrinkled.,
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APPENDIX Symptom Possible cause How to put it right Reference The area around the hole in the needle plate is scratched. * There is a notch on a Replace the needle plate. the left side of the Contact your retailer or the nearest - opening in the needle authorised service center. plate. This is not a scratch. 1 Notch 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 11 You have not wound the bobbin thread properly. Wind the bobbin thread properly. page 11 The bobbin is scratched or does not turn smoothly. Replace the bobbin. - 4 The lower thread is The thread is tangled. tangled or breaks. You have not used a bobbin that has been designed for this machine. Remove the tangled thread and clean the race. Incorrect bobbins will not work properly. Only use a bobbin that has been designed for this machine. page 60, 62 page 11 Bobbin is set incorrectly. Reset the bobbin thread correctly. page 14, 15, 16 You have not threaded the upper thread Thread the upper thread and wind the properly or fitted the bobbin properly. bobbin thread properly. page 16 The spool or spool cap is incorrectly installed. Correctly install the spool or spool cap. page 17 You have not used the right combination Choose a thread and needle that are of fabric, thread and needle. appropriate for the type of fabric. page 20 The fabric is wrinkled. The needle is bent or blunt. Replace the needle. If thin fabrics are being sewn, the stitch is too long or the fabric is not being fed correctly. Sew with the stabilizer material under the fabric. page 21 page 30 If thin fabrics are being sewn, the stitch Shorten the stitch length, or sew with is too coarse. stabilizer material under the fabric. page 26, 30 The presser foot you are using is not appropriate for the type of stitch that you want to sew. Attach the presser foot that is correct for the type of stitch that you want to sew. page 52 The thread tension is incorrect. Adjust the tension of the upper thread. page 27, 62 You have not threaded the upper thread properly. Correct the upper threading. page 16 Stitches are skipped. You have not used the right combination Choose a thread and needle that are of fabric, thread and needle. appropriate for the type of fabric. The needle is bent or blunt. Replace the needle. The needle is incorrectly installed. Correctly install the needle. page 20 page 21 Dust has accumulated under the needle Remove the needle plate cover and plate or in the race. clean the plate and the race. page 60, 61 69