Brother International SQ9050 Users Manual - English - Page 75
the fabric.
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Symptom Possible cause How to put it right Reference You have not inserted the needle properly. Insert the needle properly. page 22 The area around the hole in the needle plate is scratched. Replace the needle plate. Contact your retailer or the nearest authorized service center. - The upper thread breaks. The area around the hole in the presser foot is scratched. Replace the presser foot. Contact your retailer or the nearest authorized service center. - The bobbin case is scratched, or has a burr on it. Replace the bobbin case. Contact your retailer or the nearest authorized 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. page 12 You have not wound the bobbin thread properly. Wind the bobbin thread properly. page 12 The bobbin is scratched or does not turn smoothly. Replace the bobbin. - The lower thread is tangled The thread is tangled. or breaks. Remove the tangled thread and clean the bobbin case. page 70 4 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. page 12 Bobbin is set incorrectly. Reset the bobbin thread correctly. page 15, 16 The thread is tangled on the wrong side of the fabric. The upper thread was not threaded correctly. Correct the upper threading. page 17 You have not threaded the upper thread properly. Correct the upper threading. page 17 You have not wound the bobbin thread properly. Wind the bobbin thread properly. page 12 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 attached the presser foot holder properly. Choose a thread and needle that are appropriate for the type of fabric. Attach the presser foot holder properly. page 21 page 26 The thread tension is incorrect. Adjust the tension of the upper thread. page 31 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. page 12 Bobbin is set incorrectly. Reset the bobbin thread correctly. page 15, 16 The upper thread is too tight. The bobbin thread is incorrectly installed. Correctly install the bobbin thread. page 15 You have not threaded the upper thread Thread the upper thread and wind properly or fitted the bobbin properly. the bobbin thread properly. page 15, 16, 17 The fabric is wrinkled. You have not fitted the spool properly. Fit the spool properly. You have not used the right combina- Choose a thread and needle that are tion of fabric, thread and needle. appropriate for the type of fabric. - page 21 The needle is bent or blunt. Replace the needle. page 22 73