Specifications

e. Top cover (see Top cover on page 49)
f. System board (see
System board on page 57)
g. Fan (see
Fan on page 62)
Remove the heat sink:
1. Turn the system board upside down, with the front toward you.
NOTE: Steps 2 and 3 apply to computer models equipped with a graphics subsystem with
discrete memory.
2. Following the 1 through 7 sequence stamped into the heat sink, loosen the seven captive Phillips
screws (1) that secure the heat sink to the system board.
3. Remove the heat sink (2).
NOTE: Due to the adhesive quality of the thermal material located between the heat sink and
the system board components, it may be necessary to move the heat sink from side to side to
detach it.
NOTE: Steps 4 and 5 apply to computer models equipped with a graphics subsystem with
UMA memory.
4. Following the 1 through 4 sequence stamped into the heat sink, loosen the four captive Phillips
screws (1) that secure the heat sink to the system board.
64 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts