NexxTech USB Web Camera - Manual (Page 13)

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Chapter V. Troubleshooting and Maintenance
This section discusses basic problems with the USB Web Camera, frequently asked questions and provides some
maintenance tips.
Ensure the USB cable is correctly and securely attached.
Ensure that your video software has been properly installed.
Make sure your lens is free from obstructions, and that it is pointing in the appropriate direction.
Check that there is sufficient light for the camera. Alternatively, you may wish to adjust the Brightness or Contrast
settings in the software you are using.
Ensure there is no strong light source behind the object or person being viewed by the PC Camera.
Ensure that the lens is clean.