--- title: How to change the X endstop (Sigma Series) description: EN ES       2. Disconnect the endstop by pulling from the cable connections. The next image shows you the terminals and how you should connect it. In case you also need to replace the cable, continue --- [Skip to content](https://support.bcn3d.com/knowledge/change-x-endstop-sigma-series#main-content) - [English](https://support.bcn3d.com/knowledge/change-x-endstop-sigma-series) - [Español](https://support.bcn3d.com/es/knowledge/change-x-endstop-sigma-series) English Show submenu for translations [Contact support](https://support.bcn3d.com/knowledge/kb-tickets/new?hsLang=en) [Customer portal](https://support.bcn3d.com/repair-service?hsLang=en) ![knowledge-base-header-bcn3d-logo.png\]](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Header/knowledge-base-header-bcn3d-logo.png?height=40&name=knowledge-base-header-bcn3d-logo.png) - [Default HubSpot Blog](https://blog.bcn3d.com/) Open main navigation Close main navigation - [Default HubSpot Blog](https://blog.bcn3d.com/) - - [English](https://support.bcn3d.com/knowledge/change-x-endstop-sigma-series) - [Español](https://support.bcn3d.com/es/knowledge/change-x-endstop-sigma-series) English Show submenu for translations - [Contact support](https://support.bcn3d.com/knowledge/kb-tickets/new) - [Customer portal](https://support.bcn3d.com/repair-service) - [BCN3D forum](https://www.bcn3d.com/community/) [BCN3D forum](https://www.bcn3d.com/community/) Hello. How can we help you? - There are no suggestions because the search field is empty. 1. [Knowledge base - BCN3D](https://support.bcn3d.com/knowledge?hsLang=en) 2. [Sigma Series](https://support.bcn3d.com/knowledge/sigma-series?hsLang=en) 3. [Troubleshooting](https://support.bcn3d.com/knowledge/sigma-series?hsLang=en#troubleshooting) # How to change the X endstop (Sigma Series) --- | | [**EN**](https://support.bcn3d.com/knowledge/change-x-endstop-sigma-series) | [**ES**](https://support.bcn3d.com/es/knowledge/change-x-endstop-sigma-series?hsLang=en) | | --- | --- | --- | ---   | **Tools** | | | --- | --- | | ![pliers-icon](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Tools/pliers-icon.png?width=75&name=pliers-icon.png) | > Pliers | | ![allen-icon](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Tools/allen-icon.png?width=21&name=allen-icon.png) | > Allen key 2.5 mm | ---   | **1.** Loosen the two screws that hold the endstop to the aluminum holder. | ![screw-icon](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Tools/screw-icon.png?width=18&name=screw-icon.png) **x2 M3 12mm** | | --- | --- | ![x endstop screws](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Draft/x%20endstop%20screws.jpg?width=400&name=x%20endstop%20screws.jpg)   **2.** Disconnect the endstop by pulling from the cable connections. The next image shows you the terminals and how you should connect it. In case you also need to replace the cable, continue with step 3. | ![endstop-connection-3](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Sigma-Sigmax%20R19/how%20to%20change%20endstop%20x/endstop-connection-3.png?width=560&name=endstop-connection-3.png) | ![endstop-connection-4](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Sigma-Sigmax%20R19/how%20to%20change%20endstop%20x/endstop-connection-4.png?width=560&name=endstop-connection-4.png) | | --- | --- | **Note:** Before step **3**, remove the protective cover on the side you want the change the x endstop. **3.** Cut the two tie wraps that hold the endstop cable. ![x endstop tie wraps](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Draft/x%20endstop%20tie%20wraps.jpg?width=400&name=x%20endstop%20tie%20wraps.jpg)   **4.** Disconnect the endstop from the driver. ![x driver endstop connection](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Draft/x%20driver%20endstop%20connection.jpg?width=400&name=x%20driver%20endstop%20connection.jpg)   **5.** Install the new endstop as shown in the picture, the cable has to go under the X guide and the orange switch has to be at the bottom part of the endstop. ![x endstop cable](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Draft/x%20endstop%20cable.png?width=400&name=x%20endstop%20cable.png)   **Conclusions** Make sure that the endstop cable is immobilized with tie wrappers to avoid it being caught on moving parts of the printer. #### **[Forum community](https://support.bcn3d.com/knowledge/bcn3d-forum-community?hsLang=en)** Repair didn’t go as planned? Check out our **[forum community](https://support.bcn3d.com/knowledge/bcn3d-forum-community?hsLang=en)** for troubleshooting help.   It's important to keep your printer in good shape to make the most out of it. In this chart, you can find a list of the extruder maintenance procedures and how frequently these should be done. [Maintenance Plan](https://support.bcn3d.com/knowledge/maintenance-plan-bcn3d-sigma-series?hsLang=en)   ![bcn3d-recycle](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Tools/bcn3d-recycle.png?width=27&name=bcn3d-recycle.png)  Take your e-waste to a certified recycler. [Check how we do it in BCN3D.](https://support.bcn3d.com/knowledge/environment-bcn3d?hsLang=en)   | **Parts** | | Buy these parts | | --- | --- | --- | | ![x-endstop-component](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Sigma-Sigmax%20R19/how%20to%20change%20endstop%20x/x-endstop-component.png?width=107&name=x-endstop-component.png) | Endstop X | [SKU 16158](https://www.bcn3d.com/product/endstop-2/) |   | --- #### RELATED ARTICLES | | --- | | [![check flat cable eng](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Related%20Articles%20English/check%20flat%20cable%20eng.png?width=600&name=check%20flat%20cable%20eng.png)](https://support.bcn3d.com/knowledge/flat-cable-connections-bcn3d-epsilon-series?hsLang=en) | [![check mainboard fuse eng](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Related%20Articles%20English/check%20mainboard%20fuse%20eng.png?width=600&name=check%20mainboard%20fuse%20eng.png)](https://support.bcn3d.com/knowledge/mainboards-fuse-bcn3d-epsilon-series?hsLang=en) | | --- | --- |   | **You can help improve the BCN3D Knowledge Base.**  If you feel there are guides that we are missing or you found any error, please use this form to report it. **[Report form](https://share.hsforms.com/1F7t1sBuOQyWlAeRwwFSjgQ3fec5)** :) | | --- | - 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