1. Remove the two screws on the top cover, remove top cover; Then remove the five screws on the heat sink, remove heat sink
2. Remove the six screws on the back cover, remove back cover; Remove the four screws at the left/right side of the unit
3. Remove the FFC wich was connected from panel to main board, remove panel; Remove the screws which was used to fix the main board and remove the wires
which were connect with the small board, take out the main board.