3.
Detach the modem board.
4.
Disconnect the modem board cable.
5.
Disconnect the modem board cable from the main board then remove the modem board cable.
6.
Remove the screw holding the main board.
7.
Remove the four hex screw-nuts that secure the main board to the lower case.
8.
Take out the main board from the lower case.
9.
Remove the four screws that fasten the fan module.
10. Place the fan module as shown.
11. Disconnect the fan cable the remove the fan module.
60
Chapter 3