Symptom | Probable Cause | Remedy | Reference |
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| Dust has accumulated in the feed | Clean the race. | page 149 |
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| dogs or in the bobbin case. |
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| The upper thread was not threaded | Correct the upper threading. | page 28 |
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| correctly. |
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A |
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The bobbin case is scratched, or has | Replace the bobbin case. Contact |
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noise is made while |
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your dealer or the nearest | – |
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sewing. | a burr on it. |
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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 22 |
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| this machine is not used. | designed specifically for this |
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The needle threader | The needle has not been raised to the | Press the “Needle Position” | page 31 |
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correct position. | button. |
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cannot be used. |
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The needle is incorrectly installed. | Correctly install the needle. | page 39 |
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| The presser foot that is used is not | Attach the presser foot that is |
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| appropriate for the type of stitch that | appropriate for the type of stitch | page 138 |
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| you wish to sew. | that you wish to sew. |
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The stitch is not |
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The thread tension is incorrect. | Adjust the tension of the upper | page 57 | |||
sewn correctly. | thread. |
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| The thread is tangled, for example, in | Remove the tangle thread. If the |
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| thread is tangled in the bobbin | page 149 |
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| the bobbin case. |
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| case, clean the race. |
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| Slide the drop feed lever to the |
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| The feed dogs are lowered. | right. (as seen from the rear of the | page 105 |
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| machine) |
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| The stitch is too short. | Lengthen the stitch length. | page 60 |
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| The presser foot that is used is not | Attach the presser foot that is |
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| appropriate for the type of stitch that | appropriate for the type of stitch | page 138 |
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| you wish to sew. | that you wish to sew. |
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The fabric does not | The pressure of the presser foot is | Turn the presser foot pressure dial |
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feed. | to the left to increase the pressure | page 43 |
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weak. |
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| of the presser foot. |
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| The thread is tangled, for example, in | Remove the tangle thread. If the |
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| thread is tangled in the bobbin | page 149 |
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| the bobbin case. |
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| case, clean the race. |
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| Zigzag foot “J” is slanted on a thick | Use the presser foot locking pin |
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| (black button on the left side) on | page 67 |
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| seam at the beginning of stitching. | zigzag foot “J” to keep the presser |
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| foot level while sewing. |
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The sewing lamp | The sewing lamp is damaged. | Contact your dealer or the nearest | – |
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does not come on. | authorized service center. |
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Nothing appears in | The brightness of the LCD is either | Adjust the brightness of the LCD. | page 166 |
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the LCD. | too light or too dark. |
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Troubleshooting 163