8-32 Structure and Assembly/Disassembly
Unscrew 4 screws (M4 X 8 cross panhead screw) on the back of AC-DC supporting board, and
take out AC-DC power supply board.
6. Unscrew 4 screws on the power supply fan (M4 X16 cross panhead with the pad and the clip).
Take out the fan.
M3X6 cross panhead screw (4 screws)
M4X8 cross panhead screw (4 screws)