HP Compaq Presario CQ58 Maintenance And Service Manual page 72

d. Top cover (see
e. System board (see
Remove the fan/heat sink assembly:
1. Turn the system board upside down, with the front toward you.
2. Disconnect the fan cable (1) from the system board.
3. Following the 1, 2, 3, 4 sequence stamped into the heat sink, loosen the four captive Philllips
screws (2) that secure the fan/heat sink assembly to the system board.
4. Remove the fan/heat sink assembly (3).
NOTE:
sink and processor, it may be necessary to move the processor heat sink from side to side to
detach it.
The thermal material must be thoroughly cleaned from the surfaces of the processor heat sink and
the processor each time the processor heat sink is removed. Replacement thermal material is included
with the processor heat sink and system board spare part kits.
NOTE: The following illustration shows the replacement thermal material locations. Thermal paste is
used on the processor (1) and the heat sink section (2) that services it.
64 Chapter 4 Removal and replacement procedures
Top cover on page
System board on page
Due to the adhesive quality of the thermal material located between the processor heat
48)
61)