Brother International Innov-ís 1200 Users Manual - English - Page 186

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 race. 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 long. stabilizer material under the fabric. The thread tension is incorrect. Adjust the tension of the upper thread. Reference page 27 - page 180 page 23 page 29 page 27 page 39 page 44 page 57 page 23 page 27, page 29 page 29 page 39 page 40 page 57, page 64 page 57 184