Reverse this procedure to install the system board.
Heat sink
NOTE: The heat sink spare part kit includes replacement thermal material.
Description Spare part number
For use only on computer models equipped with an AMD processor and a graphics subsystem
with discrete memory
687231-001
For use only on computer models equipped with an AMD processor and a graphics subsystem
with UMA memory
687230-001
For use only on computer models equipped with an Intel processor and a graphics subsystem with
discrete memory
686905-001
For use only on computer models equipped with an Intel processor and a graphics subsystem with
UMA memory
686904-001
Before removing the heat sink, follow these steps:
1. Turn off the computer. If you are unsure whether the computer is off or in Hibernation, turn the
computer on, and then shut it down through the operating system.
2. Disconnect the power from the computer by unplugging the power cord from the computer.
3. Disconnect all external devices from the computer.
4. Remove the battery (see
Battery on page 48), and then remove the following components:
a. Hard drive (see
Hard drive on page 49)
b. Optical drive (see
Optical drive on page 53)
c. Keyboard (see
Keyboard on page 57)
d. Top cover (see
Top cover on page 66)
e.
Fan (see
Fan on page 76)
f.
System board (see
System board on page 78)
Remove the heat sink:
1. Turn the system board upside down, with the front toward you.
NOTE: Step 2 applies to computer models equipped with a graphics subsystem with discrete
memory. See step 3 for heat sink removal information for computer models equipped with a
graphics subsystem with UMA memory.
Component replacement procedures
81
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