1. Remove the two screws in the top cover and then remove the top cover ; remove the five screws in heat sink and then remove the heat sink
2. Remove the six screws in the rear chassis and then remove the rear chassis ; Remove the four screws in left right of the base panel
3. Remove the FFC which was connected the panel and main board, then remove the panel; Remove the screw in the main board and wire which was connect to small board, then
remove main board
4. Remove the five screws which was used for fixing the KB baord of the panel