
12. 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 these operations. The machine may operate if the foot switch is depressed by mistake, which could result in injury.
Problem | Cause | Remedy | Reference | |
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| Check if the machine head switch cord | P. 11 | |
Sewing machine does |
| is disconnected. | ||
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not start when the | Machine head switch does not work. | Adjust the position of the machine head | P. 9 | |
power is turned on and | switch. | P. 57 | ||
the foot switch is |
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| If the machine head switch is |
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depressed. |
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| malfunctioning, replace it with a new |
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| one. |
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| Air cock is closed. | Open the air cock. | P. 68 | |
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Work clamp does not | Air pressure is too weak. | Adjust the regulator so that the air | P. 68 | |
work.・Work clamp | pressure is about 0.5 MPa. | |||
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* Pneumatic work clamp |
| Adjust the speed controller by |
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specifications only | Speed controller has been tightened | P. 18 | ||
| too far. | loosening it 4 turns from the | ||
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Thread wiper does not | Thread wiper setting is OFF. | Set the thread wiper setting to ON. | P. 32 | |
work. | ||||
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| Work clamp arm lever position is | Adjust the position of the work clamp |
| |
| incorrect. | P. 68 | ||
| arm lever. | |||
Work clamp does not | *Pneumatic work clamp specifications |
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rise to the maximum | Work clamp arm assembly stopper | Adjust the position of the work clamp |
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height. | position is incorrect. |
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| arm assembly stopper. |
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| specifications |
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Work clamp pressure is |
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too weak. | Air pressure is too weak. | Adjust the regulator so that the air | P. 68 | |
* Pneumatic work clamp | pressure is about 0.5 MPa. | |||
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specifications only |
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Work clamp pressure is | Work clamp is tilted. | Adjust the tilt of the work clamp. |
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not uniform at front and |
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back of work clamp. |
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| The thread wiper is obstructing the | Adjust the height of the thread wiper. | P. 65 | |
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Thread wiper does not | needle. | Adjust the operating stroke of the | P. 65 | |
operate correctly. |
| thread wiper. | ||
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| Thread wiper position is incorrect. | Adjust the operating stroke of the | P. 65 | |
| thread wiper. | |||
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| (Continued on next page) |
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