Figure 6 Slide & lift the top Cover
vi. Removing Main board.
a. PSUs needs to be removed from system prior to removal of main
board.
b. Ensure front panel screws were removed; hold the front panel both
edges and pull-out to remove the front panel.
c. Remove main board 15x screws (highlighted in red color circle) and
3x hex standoff (highlighted in aqua color circle)
d. Hold the main board gently and pull-upwards to remove the main
board