--- title: MJ-A Floorline - How to reset the emergency stop ( Safety sensor ) description: Procedure for safety sensor alignment and line reset after “End of Line Safety Device Head” error. --- [Skip to content](https://knowledgebase.hollandmechanics.com/knowledge/mj-a-floorline-how-to-reset-the-emergency-stop-safety-sensor-#main-content) English Show submenu for translations [Contact us](https://knowledgebase.hollandmechanics.com/knowledge/kb-tickets/new?hsLang=en) [Customer portal](https://customerportal.hollandmechanics.com/tickets-view?hsLang=en) ![HMLogo RGB high res.png\]](https://knowledgebase.hollandmechanics.com/hs-fs/hubfs/HMLogo%20RGB%20high%20res.png?height=48&name=HMLogo%20RGB%20high%20res.png) Open main navigation Close main navigation - English Show submenu for translations - [Contact us](https://knowledgebase.hollandmechanics.com/knowledge/kb-tickets/new) - [Customer portal](https://customerportal.hollandmechanics.com/tickets-view) - Go to hollandmechanics.com Go to hollandmechanics.com Seek Machine Wisdom Here - There are no suggestions because the search field is empty. 1. [Help Center](https://knowledgebase.hollandmechanics.com/knowledge?hsLang=en) 2. [Floorline MJ-A](https://knowledgebase.hollandmechanics.com/knowledge/floorline-mj-a?hsLang=en) 3. [Troubleshooting](https://knowledgebase.hollandmechanics.com/knowledge/floorline-mj-a?hsLang=en#troubleshooting) # MJ-A Floorline - How to reset the emergency stop ( Safety sensor ) ## The machine has stopped and displays the following error message: “End of Line Safety Device Head”. During the equipment installation, the safety sensors (yellow color) installed at the head and tail of the line were presented. These sensors are designed to prevent damage to the equipment in case a bicycle frame is left in the workstation. When a risk condition is detected, the system automatically stops the machine operation, moves the safety cover, and interrupts all machine movements in order to protect the equipment and avoid further issues. To restore the line operation, the sensor must be repositioned and aligned correctly again. On the bottom part of the sensor, there are three indicator lights: two orange and one green. When the sensor is properly aligned, all three lights should remain ON. ![WhatsApp Image 2026-04-17 at 09.41.30 (1)](https://knowledgebase.hollandmechanics.com/hs-fs/hubfs/WhatsApp%20Image%202026-04-17%20at%2009.41.30%20(1).jpeg?width=317&height=563&name=WhatsApp%20Image%202026-04-17%20at%2009.41.30%20(1).jpeg) ![WhatsApp Image 2026-04-17 at 09.41.29 (1)](https://knowledgebase.hollandmechanics.com/hs-fs/hubfs/WhatsApp%20Image%202026-04-17%20at%2009.41.29%20(1).jpeg?width=318&height=566&name=WhatsApp%20Image%202026-04-17%20at%2009.41.29%20(1).jpeg) Once the sensors are properly aligned, the error message can be reset and the line can be started again.     - [General Lacing](https://knowledgebase.hollandmechanics.com/knowledge/general-lacing?hsLang=en#main-content) - [setup](https://knowledgebase.hollandmechanics.com/knowledge/general-lacing?hsLang=en#setup) - [Troubleshooting](https://knowledgebase.hollandmechanics.com/knowledge/general-lacing?hsLang=en#troubleshooting) - [Adjustments](https://knowledgebase.hollandmechanics.com/knowledge/general-lacing?hsLang=en#adjustments) - 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