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Processor Heat Sink/Fan Assembly
Dell™ Vostro™ 420/220/220s Service Manual
Removing the Processor Heat Sink/Fan Assembly
Replacing the Processor Heat Sink/Fan 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.
CAUTION: To guard against likelihood of electric shock, laceration from moving fan blades, or other
unexpected injuries, always unplug your computer from the electrical outlet before removing the cover.
NOTICE: The procedure for removing and replacing the processor heat sink/fan assembly is identical for
the Vostro 420, Vostro 220, and Vostro 220s computers; the illustration provided is for example only and
may not represent your particular computer precisely.
Removing the Processor Heat Sink/Fan Assembly
1. Follow the procedures in Before Working on Your Computer.
2. Remove the computer cover (see Removing the Computer Cover
).
3. Disconnect the heat sink/fan assembly cable from the system board.
4. Loosen the four captive screws that attach the heat sink/fan assembly to the system board.
CAUTION: The heat sink/fan assembly may become very hot during normal operation. Be sure that it has
had sufficient time to cool before you touch it.
NOTICE: A strong thermal solution bond may exist between the processor and heat sink. Do not use
excessive force to separate the heat sink/fan assembly from the processor to avoid damaging the
processor.
5. Lift the heat sink/fan assembly upward gently, and remove it from the computer. Lay the assembly with the fan facing
downward, and with the thermal grease facing upward.
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