Brother International Innov-is 1250D Operation Manual - Page 200

APPENDIX Symptom Probable Cause Remedy The upper thread was not threaded correctly. Correct the upper threading. Stitches are skipped. 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. The needle is incorrectly installed. Correctly install the needle. Dust has accumulated under the Remove the needle plate cover and needle plate or in the bobbin case. clean the race. Dust has accumulated in the feed dogs or in the bobbin case. Clean the race. A high-pitched noise is made while sewing. The upper thread was not threaded correctly. The bobbin case is scratched, or has a burr on it. Correct the upper threading. Replace the bobbin case. Contact your retailer or the nearest authorized service center. 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 thread does not pass through the eye of the needle. The needle has not been raised to the correct position. Press the "Needle Position" button. The needle is incorrectly installed. Correctly install the needle. The presser foot that is used is not Attach the presser foot that is appropriate for the type of stitch appropriate for the type of stitch that that you wish to sew. you wish to sew. The stitch is not sewn correctly. The thread tension is incorrect. Adjust the tension of the upper thread. The thread is tangled, for example, in the bobbin case. Remove the tangle thread. If the thread is tangled in the bobbin case, clean the race. The feed dogs are lowered. Slide the drop feed lever to the right (as seen from the rear of machine). The stitch is too short. Lengthen the stitch length. The fabric does not feed. The presser foot that is used is not Attach the presser foot that is appropriate for the type of stitch appropriate for the type of stitch that that you wish to sew. you wish to sew. The thread is tangled, for example, in the bobbin case. Remove the tangled thread. If the thread is tangled in the bobbin case, clean the race. Zigzag foot "J" is slanted on a thick seam at the beginning of stitching. Use the presser foot locking pin (black button on the left side) on zigzag foot "J" to keep the presser foot level while sewing. Reference page 31 page 41 page 42 page 42 page 184 page 184 page 31 - page 25 page 34 page 42 page 70 page 59 page 184 page 110 page 59 page 70 page 184 page 65 198