Dell XPS 730 (Late 2008) - Manual (Page 69)

Replacing the Heat Sink Assembly 67
9
Replacing the Heat Sink Assembly
WARNING: 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.
CAUTION: 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, see the
Setup Guide.
Your computer uses one of the following types of processor cooling solutions,
air-cooling or H2Ceramic (also called H2C or Hot-to-Cold) liquid-cooling
system.
Replacing the Air Cooled Heat Sink Assembly
1 Follow the procedures in "Before You Begin" on page 13.
2 Remove the computer cover (see "Replacing the Computer Cover" on
page 17).
WARNING: The processor heat sink can get very hot during normal operation. Be
sure that the heat sink has had sufficient time to cool before you touch it.
3 Loosen the four captive screws that secure the heatsink to the chassis.
4 Gently lift the heat sink assembly out of the chassis. You may have to
gently twist the heat sink to fully disengage the heat sink assembly.
5 Disconnect the fan cable from the rear fan connector on the LED circuit
board at the back of the chassis.