APPENDIX
Symptom | Probable Cause | Remedy | Reference | |
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| The thread tension is incorrect. | Adjust the tension of the upper thread | page 64, | |
| and the bobbin thread. | page 65 | ||
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The thread tension |
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| Incorrect bobbins will not work |
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is incorrect. |
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A bobbin designed specifically for | properly. Only use a bobbin | page 29 | ||
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| this machine is not used. | designed specifically for this | ||
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| machine. |
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The upper thread is | The bobbin thread is incorrectly | Correctly install the bobbin thread. | page 34 | |
too tight. | installed. | |||
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| The upper thread was not | Correct the upper threading. | page 38 | |
| threaded correctly. | |||
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Stitches are | The needle is bent or blunt. | Replace the needle. | page 28 | |
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skipped. | The needle is incorrectly installed. | Correctly install the needle. | page 28 | |
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| Dust has accumulated under the | Remove the needle plate cover and | page 78 | |
| needle plate or in the bobbin case. | clean the race. | ||
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| Dust has accumulated in the | Clean the race. | page 78 | |
| bobbin case. | |||
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| The upper thread was not | Correct the upper threading. | page 38 | |
| threaded correctly. | |||
A |
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noise is made | The bobbin case is scratched, or | Replace the bobbin case. |
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while | Contact your dealer or the nearest | - | ||
has a burr on it. | ||||
embroidering. | authorized service center. |
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| Incorrect bobbins will not work |
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| A bobbin designed specifically for | properly. Only use a bobbin | page 29 | |
| this machine is not used. | designed specifically for this | ||
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The thread does | The needle has not been raised to | Press the needle position button. | page 38 | |
not pass through | the correct position. | |||
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the eye of the |
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needle. | The needle is incorrectly installed. | Correctly install the needle. | page 28 | |
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| The thread tension is incorrect. | Adjust the tension of the upper thread | page 64, | |
| and the bobbin thread. | page 65 | ||
The stitch is not |
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sewn correctly. | The thread is tangled, for example, | Remove the tangle thread. If the |
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| thread is tangled in the bobbin case, | page 78 | ||
| in the bobbin case. | |||
| clean the race. |
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The needle |
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threader lever does | The needle has not been raised to | Press the needle position button. | page 38 | |
not lower to the | the correct position. | |||
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correct position. |
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| The lamps are damaged. | Contact your dealer or the nearest | - | |
The lamps do not | authorized service center. | |||
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come on. |
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The machine is not turned on. | Turn on the machine. | page 18 | ||
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Nothing appears in | The brightness of the LCD is either | Adjust the brightness of the LCD. | page 89 | |
the LCD. | too light or too dark. | |||
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