Brother International DZ3400 Operation Manual - Page 110
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APPENDIX Symptom The fabric is wrinkled. Stitches are skipped. There is a highpitched noise while sewing. The fabric does not feed. The fabric feeds in the opposite direction. Possible cause How to put it right Reference The presser foot you are using is not Attach the presser foot that is correct appropriate for the type of stitch that for the type of stitch that you want to you want to sew. sew. page 82 The thread tension is incorrect. Adjust the tension of the upper thread. page 43, 98 You have not threaded the upper thread properly. Correct the upper threading. page 25 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 31 The needle is bent or blunt. The needle is incorrectly installed. Replace the needle. Correctly install the needle. page 32 Dust has accumulated under the needle plate or in the race. Remove the needle plate cover and clean the plate and the race. page 91 Dust has built up in the feed dogs or Remove the needle plate cover and in the race. clean the plate and the race. page 91 You have not threaded the upper thread properly. Correct the upper threading. page 25 Replace the bobbin case. The bobbin case is scratched. Contact your retailer or the nearest - authorized service center. You have not used 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 17 The feed dogs are lowered. Slide the feed dog position lever to . page 57, 67 The stitch is too fine. Lengthen the stitch length. page 40 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 31 The thread is tangled, for example, in the race. Remove the tangle thread. If the thread is tangled in the race, clean the race. page 91, 95 The presser foot you are using is not Attach the presser foot that is correct appropriate for the type of stitch that for the type of stitch that you want to you want to sew. sew. page 82 The needle is bent or blunt. Replace the needle. page 32 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. page 45 The feed mechanism is damaged. Contact your retailer or the nearest authorized service center. - 108