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Procedure for Thread Breaks not being Detected

Not Detecting Thread Break

This article lists the steps to resolve Thread Breaks not being detected. If thread break detection is working intermittently, follow the same troubleshooting steps and pay greater attention to step 15 if earlier steps do not resolve the issue.

To test if a troubleshooting step below has resolved the situation run the Thread Sensor Test when prompted. If the test completes successfully you can disregard any additional steps.

Thread Sensor Test

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  1. Load the Thread Break Sensor Test.ofm found at the bottom of this page.

 

  1. The thread break test should be sewn on one layer of white broad cloth or equivalent with one layer of 2 oz. cut-away backing.

 

  1. Set your ‘Color Sequence’ to needles 1, 9 and 16.

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4. While sewing, wait 100 stitches and cut the thread below the thread sensor before the last guide hole.  Wait 75 stitches to see if the thread break was detected. Run and cut it at least once for each; 1,9 and 16.

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  1. There should be no thread breaks or pull outs other than the artificial ones. Also, there should be no inconsistency in the fill portion of the design.

 

  1. If the design finishes and each of the three artificial thread breaks was recognized by the machine, the ‘Thread Break Sensor Test’ is complete and was successful.

 

Troubleshooting Steps for Thread Breaks not being Detected

  1. Click on Tools > Settings… > Machine tab

Make sure ‘Enable All Thread Detection’ and ‘Enable Bobbin Thread Detection’ are checked.

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  1. Click Apply and OK. Run the ‘Thread Break Sensor Test’.

 

  1. Spin the Thread Sensor 1/4TH of a turn.

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  1. Run the ‘Thread Break Sensor Test’.

 

  1. If you are still getting problems, check ‘TBS Sensitivity’. Click on Tools > Settings…> Machine tab

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  1. Set the ‘TBS Sensitivity’ to -100.

 

  1. Click Apply and OK. Run the ‘Thread Break Sensor Test’. If you are getting False Thread Breaks skip to step 15.

 

  1. Check for Updates, Click on Tools > Check for Updates… When it asks if you want to continue click Yes. If it finds an update, click Next to Download. Click Next to install.

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If prompted turn off the machine and close the operating software, but Do Not close the update window.

 

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  1. If you are using Amaya OS, try running AMAYA OS v10.00.051.

 

  1. Run the ‘Thread Sensor Test’.

 

  1. If the situation remains unresolved, you will need additional technical assistance. Here are the available Melco Technical Support options. The ‘Thread Sensor’, might need replacing. For the EMT16 Plus this is part number: ‘34617 Thread Sensor Assembly’.  Replacement Steps are detailed in the online Technical Manual and in this video on Facebook and YouTube.

 

  1. Run the ‘Thread Sensor Test’.

 

  1. If the situation remains unresolved, you will need additional technical assistance. Here are the available Melco Technical Support options. The ‘Main-Board’ might need replacing. For the EMT16 Plus this is part number: ‘34799 PCB Assembly, Control Board, EMT16’

 

  1. Run the ‘Thread Sensor Test’ (above).

 

  1. If you are getting False Thread Breaks Increase the ‘TBS Sensitivity’ by 10 (for example from -100 to -90) and try running the machine. If you are still getting False Thread Breaks keep increasing the ‘TBS Sensitivity’ by 10. Keep increasing the ‘TBS Sensitivity’ by 10 until you no longer get an unusual amount of False Thread Break

 

  1. Run the ‘Thread Sensor Test’. If it’s Not Detecting Thread Breaks go to step 8.
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