This is a manual of Brother's single needle lockstitch sewing machine S-7250A. We would like to show the way to check whether the upper shaft angle, feed motor position, and needle bar position is correctly detected.

If you would like to check if there are any problems with the sensor, buttons on the panel, and so on, please try to check it on the panel following the steps in the video.

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* Disassembly and assembly should only be carried out by a qualified technician.
* Carefully read the "SAFETY INSTRUCTION" and the whole of the service manual to understand this product before you start maintenance.
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