g.
Keyboard (see
Keyboard on page 49
)
h.
Metal heat shield (see
Metal heat shield on page 51
)
i.
Fan (see
Fan on page 52
)
j.
Top cover (see
Top cover on page 53
)
k.
System board (see
System board on page 66
)
Remove the discrete heat sink:
1.
Position the system board face up with the front toward you.
2.
To remove the discrete heat sink, in the order indicated on the heat sink, loosen the six captive
Phillips screws
(1)
that secure the heat sink to the system board.
3.
Lift the heat sink up
(2)
, and then pull it off the system board
(3)
.
Remove the UMA heat sink.
1.
To remove the UMA heat sink, in the order indicated on the heat sink, loosen the four captive
Phillips screws
(1)
that secure the heat sink to the system board.
70
Chapter 4 Removal and replacement procedures
