> For the complete documentation index, see [llms.txt](https://docs.revrobotics.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.revrobotics.com/duo-control/troubleshooting-the-control-system.md).

# Troubleshooting the Control System

- [General Troubleshooting](https://docs.revrobotics.com/duo-control/troubleshooting-the-control-system/troubleshooting-the-control-system.md)
- [Control Hub Troubleshooting](https://docs.revrobotics.com/duo-control/troubleshooting-the-control-system/control-hub-troubleshooting.md)
- [DC Motor Port Voltage Testing](https://docs.revrobotics.com/duo-control/troubleshooting-the-control-system/control-hub-troubleshooting/dc-motor-port-voltage-testing.md)
- [Driver Hub Troubleshooting](https://docs.revrobotics.com/duo-control/troubleshooting-the-control-system/driver-hub-troubleshooting.md)
- [Driver Hub Battery Troubleshooting](https://docs.revrobotics.com/duo-control/troubleshooting-the-control-system/driver-hub-troubleshooting/driver-hub-battery-troubleshooting.md)
- [Expansion Hub Troubleshooting](https://docs.revrobotics.com/duo-control/troubleshooting-the-control-system/expansion-hub-troubleshooting.md)
- [Status LED Blink Codes](https://docs.revrobotics.com/duo-control/troubleshooting-the-control-system/led-blink-codes.md)
- [12V Battery Best Practices and Troubleshooting](https://docs.revrobotics.com/duo-control/troubleshooting-the-control-system/12v-battery-best-practices-and-troubleshooting.md)