Please first make sure you have the correct IAdea player that supports CEC function.
[Player Configuration] * Configuration applies to XMP-3250 series player only. For XMP-2200 series player, CEC is enabled by default.
1) Power up your player
2) When player gets into Welcome! screen, plug in USB keyboard to enter config menu
3) Go to "Video setting" -> "Set HDMI CEC" -> Use space key to enable CEC , then save and exit
On the software side, IAdea player share the current supported "video off" function. Therefore no additional learning is required.
For Manager Express user, simply schedule the "turn off the screen" time where you can always find this option in the bottom of the Manager Express user interface (* looping mode )
For SMIL programmer, check this page for more detials : http://www.a-smil.org/index.php/Screen_on/off
For Scala user, leave the schedule slot empty to configure as video off time.