PRO 22/22 Bottom: 2 Phillips screws at the bottom and tilt out (Top of the monitor is held in with pins/studs)
PRO 22/22 Top: Open speaker door, lift out upper monitor chrome trim piece, lift monitor UP, then out. Swap out brackets from old monitor to new.
PRO 32: 2 screws at the bottom. Monitor is held in with 4 "hooks" that go into the Yellow Frame.
Very easy on the 22/22. The PRO 32 is a Bear because the monitor is so big and heavy!! You must be VERY careful not to damage the touchscreen once you unhook the monitor from the frame to get it removed from the machine. NOTE: The PRO32 only accepts ONE type of monitor!! If you're thinking of installing an older A1 V32 (or Hammerhead 32 monitor) into a PRO32 cabinet, you'll be cussing and cutting and fabricating. Best just to break down and spend $900 on a new Ceronix that was designed to go into that cabinet.... In my opinion.
Hope this helps!