Brother International Innov-is 500D Users Manual - English - Page 172
The lower thread, is tangled or, breaks., The thread tension, is incorrect., The fabric is, wrinkled
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SE-BrotherE_sgml.book Page 166 Monday, June 30, 2003 3:44 PM APPENDIX Symptom Probable Cause Remedy The bobbin thread is incorrectly installed. Correctly install the bobbin thread. The lower thread is tangled or breaks. The bobbin is scratched or does not rotate smoothly, or has a burr on it. The thread is tangled. Replace the bobbin. Remove the tangled thread and clean the shuttle. 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. The upper thread was not threaded correctly. Correct the upper threading. The bobbin thread is incorrectly installed. Correctly install the bobbin thread. The thread tension is incorrect. The combination of fabric, thread and needle is not correct. The presser foot holder is incorrectly installed. Select a thread and needle that are appropriate for the type of fabric being sewn. Correctly install the presser foot holder. The thread tension is incorrect. Adjust the tension of the upper thread. 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. The upper thread was not threaded correctly, or the bobbin is incorrectly installed. Correctly thread the upper thread and correctly install the bobbin thread. The spool is incorrectly installed. Correctly install the spool. The fabric is wrinkled. The combination of fabric, thread and needle is not correct. Select a thread and needle that are appropriate for the type of fabric being sewn. The needle is bent or blunt. Replace the needle. If thin fabrics are being sewn, the Shorten the stitch length or sew with stitch is too coarse. stabilizer material under the fabric. The thread tension is incorrect. Adjust the tension of the upper thread. Reference page 21 - page 162 page 18 page 23 page 21 page 36 page 42 page 54 page 18 page 21, page 23 page 23 page 36 page 37 page 57 page 54 166