SmartEco mode is greyed out when no source is detected by the projector or Dynamic Iris is set to “On”. Please check the following to enable SmartEco mode.
1. Connect the projector to a source signal, for example a Blu-ray player or game console
2. Turn off Dynamic Iris through PICTURE menu> Advanced> Dynamic Iris> Off
3. Turn off 3D mode through PICTURE menu> 3D> off