Replacing System Board
1. Remove the cable cover and slightly uplift first.
2. Remove all IO cables. (LAN, 24V /12V PUSB, RS232, CD & USB)
3. Release 2 thumb screws of System board Box then slightly slide down
4. Hold system board box with one hand and slightly uplift the pulling tab with another
5. Remove 50 pin LVDS cable in red circle as shown below