To troubleshoot, try the following steps:

1. Ensure your printer is turned on and connected to the same router as the device you are using.
2. Make sure the cables or USBs connected to the printer are secure.
3. Restart your printer by unplugging and replugging the power cord.
4. Check your network or printer settings.
5. Install the latest printer drivers or update existing drivers.
6. Check your computer settings.