To get IR MAV video, you must use the LEFT MPCD
Go to the STRS page
Select the IRMAV or EOMAV
Wait for the RDY message in the bottom left hand corner.
Press the CAGE/UNCAGE HOTAS button.
The STRS page will be replaced by MAV video.
To use the Maverick, Click Sensor Select Forward, to the words IRMAV appear on the screen. Only then you can do target locks.