---
title: Sensor Connection Error - Step 2 - All Versions
description: Please follow the steps in the Control Module and Sensor Testing Video to troubleshoot sensor connection errors for V4, V5, and V6 systems.
---

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# Sensor Connection Error - Step 2 - All Versions

## Please follow the steps in the Control Module and Sensor Testing Video to troubleshoot sensor connection errors for V4, V5, and V6 systems.

 

In order to proceed with troubleshooting your ProScanner, please refer to this **[Control Module and Sensor Testing Video.](https://youtu.be/Myazk_lANLw)** 

 

**Please note that this video will require testing from you, recorded on the Visual Guide PDF provided in the description section of the link.**

 

Please note that there are **different guides** based on **which version of the scanner** you have. If you do not know which version ProScanner please follow these steps to check.

- V4 ProScanner - Testing for **Primesense** Sensors
- V5 ProScanner - Testing for **Occipital** Sensors
- V6 ProScanner - Testing for **Astra Orrbec** Sensors

Once the testing is complete, please **submit a request** to our team at [support.fit3d.com](http://support.fit3d.com) with a photo of your findings, so that our team may advise you on the next steps.

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