--- title: How to replace the Y endstop (BCN3D Sigmax) description: "  This guide shows you how to change the Y endstop. To do so, follow these steps:   1. Turn off and disconnect your BCN3D Sigma from the power source.   2. Take out the bowden tube by pressing down on" --- [Skip to content](https://support.bcn3d.com/knowledge/y-endstop-bcn3d-sigmax#main-content) - [English](https://support.bcn3d.com/knowledge/y-endstop-bcn3d-sigmax) - [Español](https://support.bcn3d.com/es/knowledge/y-endstop-bcn3d-sigmax) 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/y-endstop-bcn3d-sigmax) - [Español](https://support.bcn3d.com/es/knowledge/y-endstop-bcn3d-sigmax) 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 + Sigmax](https://support.bcn3d.com/knowledge/sigma-sigmax?hsLang=en) 3. [Troubleshooting](https://support.bcn3d.com/knowledge/sigma-sigmax?hsLang=en#troubleshooting) # How to replace the Y endstop (BCN3D Sigmax)   | **Tools** |   | | --- | --- | | ![socket-driver-icon](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Tools/socket-driver-icon.png?width=75&name=socket-driver-icon.png) | > 5mm socket driver | --- This guide shows you how to change the Y endstop. To do so, follow these steps:   **1.** Turn off and disconnect your BCN3D Sigma from the power source. | ![sigma-turn-off-1](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Sigma-Sigmax%20R19/Apagar%20impresora/sigma-turn-off-1.png?width=459&name=sigma-turn-off-1.png) | ![sigma-turn-off-2](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Sigma-Sigmax%20R19/Apagar%20impresora/sigma-turn-off-2.png?width=459&name=sigma-turn-off-2.png) | | --- | --- |   **2.** Take out the bowden tube by pressing down on the coupling collet and pulling the bowden out. This will give you a better access to the Endstop.  ![](https://support.bcn3d.com/hs-fs/hubfs/IMG_20200921_172237-jpg.jpeg?width=600&name=IMG_20200921_172237-jpg.jpeg)   | **3. **Unscrew the nuts that hold the endstop in place with a 5mm socket driver.  | ![nut-icon](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Tools/nut-icon.png?width=36&name=nut-icon.png)**x2 M3** | | --- | --- | ![](https://support.bcn3d.com/hs-fs/hubfs/image-png-Sep-22-2020-08-25-20-57-AM.png?width=600&name=image-png-Sep-22-2020-08-25-20-57-AM.png)   **4.** Take out the Endstop, you'll need to wiggle it a bit in order to take it out: ![](https://support.bcn3d.com/hs-fs/hubfs/IMG_20200921_172421-jpg.jpeg?width=600&name=IMG_20200921_172421-jpg.jpeg)   **5.** Disconnect the endstop from the Y driver and extract it from the printer. Note that the Endstop cable passes behind the Y transmission bar.  ![](https://support.bcn3d.com/hs-fs/hubfs/IMG_20200921_172537-jpg.jpeg?width=600&name=IMG_20200921_172537-jpg.jpeg)   **6.** To install the new endstop, follow the same steps in reverse order.    #### [Forum Community](https://support.bcn3d.com/knowledge/bcn3d-forum-community?hsLang=en) Do you have questions about this process? Check out our [**forum community**](https://support.bcn3d.com/knowledge/bcn3d-forum-community?hsLang=en) for more info about this.   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?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/Components/x-endstop-component.png?width=107&name=x-endstop-component.png) | Sigma/Sigmax Y Endstop | [SKU 10941](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/check-flat-cable-connections-bcn3d-sigmax?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-sigmax?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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