Brother International XL-2121 Users Manual - English - Page 59

APPENDIX Symptom Possible cause How to put it right You have not threaded the upper thread properly. (for example, you have not fitted the spool properly, or the thread has come out of the guide above the needle.) Correct the upper threading. There are knots or tangles in the thread. Remove any knots or tangles. The needle is not appropriate for the Choose a needle that is appropriate thread you are using. for the type of stitch. The upper-thread tension is too tight. Loosen the upper-thread tension. The thread is tangled, for example, in the shuttle. Remove the tangle thread. If the thread is tangled in the shuttle, clean the shuttle. The upper thread breaks. The needle is bent or blunt. Replace the needle. You have not fitted the needle properly. Fit the needle properly. The area around the hole in the needle plate is scratched. Replace the needle plate. Contact your retailer or the nearest authorised service center. 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 shuttle is scratched, or has a burr on it. Replace the shuttle. 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. You have not fitted the bobbin thread properly. Fit the bobbin properly. The lower thread is tangled or breaks. The bobbin is scratched or does not turn smoothly. The thread is tangled. Replace the bobbin. Remove the tangled thread and clean the shuttle. 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. You have not threaded the upper thread properly. Correct the upper threading. You have not fitted the bobbin thread properly. Fit the bobbin thread properly. The thread tension is incorrect. You have not threaded the right combination of thread and needle for the fabric you are using. You have not fitted the presser-foot holder properly. Choose a thread and needle that are appropriate for the type of fabric. Fit the presser-foot holder properly. The thread tension is incorrect. Adjust the tension of the upper thread. 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. Reference page 23 - page 29 page 28 page 55 page 11, 12 page 12 - - - page 18 page 20, 21 - page 55 page 18 page 23 page 20, 21 page 29 - page 28 page 18 58