11. TROUBLESHOOTING
11. TROUBLESHOOTING
•Please check the following points before calling for repairs or service.
•If the following remedies do not fix the problem, turn off the power switch and consult a qualified technician or the place of purchase.
CAUTION
Turn off the power switch and disconnect the power cord before carrying out troubleshooting, otherwise the machine may operate if the foot switch is depressed by mistake, which could result in injury.
Problem | Cause | Remedy |
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Work clamp does not | Work clamp operation is sluggish. | Grease the sliding part of the work | P. 59 | |||
rise. | clamp. |
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| Too much friction between work clamp | Grease the work clamp lifter plate and |
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| lifter plate and work clamp arm lever |
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| plate. | work clamp arm lever plate. |
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| Work clamp is contacting thread wiper. | Adjust the position of the thread wiper. | P. 70 | |||
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Button clamp does not | Work clamp is contacting thread wiper. | Adjust the position of the thread wiper. | P. 70 | |||
rise. | ||||||
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Work clamp lift amount | Incorrect position of work clamp arm | Adjust the work clamp lift amount. |
| P. 69 | ||
is incorrect. | lever plate |
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Button clamp lift | Incorrect position of button clamp holder | Adjust the button clamp lift amount. |
| P. 69 | ||
amount is incorrect. |
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hook. |
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Thread wiper does not |
| Adjust the height of the thread wiper. | P. 70 | |||
operate correctly. | The thread wiper is obstructing the | |||||
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| needle. | Adjust the operating | distance | of | the | P. 71 |
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| thread wiper. |
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| Thread wiper position is incorrect. | Adjust the operating | distance | of | the | P. 71 |
| thread wiper. |
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Lower thread winds to | Height of bobbin winder tension | Adjust the height of the bobbin winder | P. 28 | |||
one side. | assembly is incorrect. | tension assembly. |
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Lower thread winding | Bobbin presser position is incorrect. | Adjust the position of the bobbin | P. 28 | |||
amount is incorrect. | presser. |
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Thread comes | Stitches being skipped at the sewing | Refer to “Skipped stitches occur” |
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| P. 77 | |
unthreaded. | start. |
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| Uneven needle thread. | Adjust the |
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| P. 30 |
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| Needle thread is too short. | Use a thread nipper device. |
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| P. 31 | |
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76 |