Service Manual

Replacing the Processor Heat Sink Assembly 33
9
Replacing the Processor Heat Sink
Assembly
CAUTION: Before working inside your computer, read the safety information that
shipped with your computer. For additional safety best practices information, see
the Regulatory Compliance Homepage at www.dell.com/regulatory_compliance.
NOTICE: Do not perform the following steps unless you are familiar with hardware
removal and replacement. Performing these steps incorrectly could damage your
system board. For technical service information, see the Setup Guide.
1 Follow the procedures in "Before You Begin" on page 9.
2 Remove the computer cover (see "Replacing the Computer Cover" on
page 11).
3 Remove the top shield (see "Replacing the Top Shield" on page 15).
CAUTION: The heat sink assembly may be very hot during normal operation. Be
sure that it has had sufficient time to cool before you touch it.
4 Disconnect the processor fan cable from the CPU FAN connector on the
system board.
5 Use the marked sequence to loosen the four captive screws at the lower
end of the processor heat sink assembly.
6 Remove the five screws securing the top end of the processor heat sink.
NOTICE: To ensure maximum cooling for the processor, do not touch the heat
transfer areas on the processor heat sink. The oils in your skin can reduce the heat
transfer capability of the thermal pads.
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