Main Motor Lock. or Main Shaft Error. or My embroidery machine wont turn. My machine does not stop at 100!
This is a very common error that you may get with an embroidery machine is when the main shaft does not rotate. follow the steps to diagnose and remedy this error. One very common error that you may get with a embroidery machine is when the main shaft does not rotate. You will get any number of error codes and phrases such as Main Motor Lock, Main Shaft Error, Sewing Motor Lock, and Z-axis not work. This error is common in most embroidery machines including Avance', Barudan, Butterfly, Dublin, Feiya, Happy, Highland, Melco, Mesa, Meistergram, Pantograms, Pro Capsule, Ricoma, SWF, Tajima, Toyota, and ZSK. The base problem you have when you get this error is the main motor or sewing motor is not turning as it should. This could be the motor going out however it is very rare that the motors fail on these machines. The vast majority of the time the issue will be a broken needle jammed in the Rotary Hook. So this is how I diagnose the issue. Tajima Error codes error 211 - A fixed position signal is not detected. (Main shaft Z signal) - Return the main shaft to the fixed position. Check the encoder signal error 311 - *Encoder A signal status does not change for 5 seconds, *Motor or belt failure - *Check the main shaft driver for excitation *Check encoder and encoder signal lines,
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Is this a physical error, hardware breakdown, or a software issue? The first thing you should do is check the machine to see if it will turn past 360 degrees. Turn off the machine. Depending on your machine use the handle, knob, Allen wrench, etc. to see if your machine can turn all the way around. Watch the rotary hook and look for the following things:
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What may cause a sewing motor lock? Here are the most common list of components:
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If you do have resistance:
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Piece of needle stuck in the rotary hook.
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Takeup Lever Drive Lever Malfunction
Another common reason for a Main Motor Lock or Main Shaft Error, or My embroidery machine wont turn! is the drive lever malfunction.
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Worn bearing or bushings.Sometimes your machine may stall because the bushings are worn and sieze. Here is some information on bearings an bushings What is a bearing and what is a bushing? Bushings, also called sleeve bearings, slide over smooth rods and provide an extremely low friction motion which minimizes power consumption, noise, and wear on parts. Bushings look like plain metal tubes |
Bushings |
Rolling (Ball) Bearings
Many commercial single-head embroidery machines are copied from the Toyota and Tajima models including Avance', Butterfly, Dublin, Highland, Mesa, Meistergram, Pantograms, Pro Capsule, Prodigi, Ricoma, and many others. This was a remarkably successful design and proved to be economical and very sturdy. Most of these machines probably have bushings on the upper and lower shafts which are sleeves made from bronze or some other soft metal. When oil dries it sometimes hardens and or becomes sticky. This can cause the shafts that pass through the bushings to create friction and can cause the main motor to stall. |
Bearings |
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The procedure below helps free the bushings if you are getting a main motor lock. This may not be exactly the same for all machines but should give you an idea of how to free bushings if this is the issue.
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You will need to use some type of penetrating oil to free up the bearing/bushing. |
Remove these 2 screws and this cover to gain access to the Bushing Top Oiling Spot. |
Oil the points shown in the three photos below. You may want to turn off the Thread Break Sensor and run the machine for several minutes as you drip oil into the holes and on the bearings/bushings. | ||
Complete the procedure by oiling the remaining oiling points on your machine. | ||
Videos and PDFs from other sites:
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