TROUBLESHOOTING
If the machine stops operating correctly, check the following possible problems before requesting service. You can solve most problems by yourself. If you need additional help, the Brother Solutions Center offers the latest FAQs and troubleshooting tips. Visit us at [http://solutions.brother.com].
If the problem persists, contact your dealer or the nearest authorized service center.
Frequent troubleshooting topics
Detailed causes and remedies for common troubleshooting topics are described below. Be sure to refer to this before contacting us.
| ■ Upper thread tightened up |
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| page 81 |
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| ■ Tangled thread on wrong side of fabric |
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| page 82 |
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| ■ Incorrect thread tension (Upper/lower side of fabric) |
| page 85 |
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| ■ Fabric is caught in the machine and cannot be removed |
| page 86 |
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| Upper thread tightened up | ■ Remedy/check details | ||||
| Correctly install the lower thread. |
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■ Symptom | aRemove the bobbin from the bobbin case. |
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| • The upper thread appears as a single |
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| continuous line. |
| Place the bobbin in the bobbin case so that |
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| • The lower thread is visible from the upper | bthe thread unwinds in the correct direction. |
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| side of the fabric. (Refer to the illustration |
| • Hold the bobbin with your right hand with |
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| below.) |
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| the thread unwinding to the left, and hold |
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| • The upper thread has tightened up, and |
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| the end of the thread with your left hand. |
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| comes out when pulled. |
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| Then, with your right hand, place the bobbin |
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| • The upper thread has tightened up, and |
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| in the bobbin case. |
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| wrinkles appear in the fabric. |
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| • The upper thread tension is tight, and the |
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| results do not change even after the thread |
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| tension is adjusted. |
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| If the bobbin is inserted with the thread |
| unwinding in the wrong direction, sewing will be |
a Lower side of fabric | done with an incorrect thread tension. |
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bLower thread visible from upper side of fabric
cUpper thread
dUpper side of fabric
eLower thread
■Cause
Incorrect lower threading
If the lower thread is incorrectly threaded, instead of the appropriate tension being applied to the lower thread, it is pulled through the fabric when the upper thread is pulled up. For this reason, the thread is visible from the upper side of the fabric.
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