6Remove the three screws at the bottom of the fan tray, then rotate the top of the fan tray back on its hinges to expose the fan power distribution board.
Plastic board shield
Fan power distribution board
Top of fan tray
Fan tray
7Lift off the plastic board shield, then remove the four screws that secure the fan power distribution board to the bottom of the fan tray and lift the board out of the tray.
92Replacing and Adding Internal Devices