Replacing The Processor Fan And Heat-Sink Assembly; Procedure; Postrequisites - Dell Inspiron 3647 Owner's Manual

Replacing the Processor Fan and
Heat-sink Assembly
WARNING: Before working inside your computer, read the safety information
that shipped with your computer and follow the steps in "Before You Begin" on
page 7. After working inside your computer, follow the instructions in
"After Working Inside Your Computer" on page 9. For more safety best practices,
see the Regulatory Compliance home page at dell.com/regulatory_compliance.
CAUTION: Ensure that you apply new thermal grease. New thermal grease is
critical for ensuring adequate thermal bonding, which is a requirement for
optimal processor operation.
CAUTION: Incorrect alignment of the processor fan and heat-sink assembly can
damage the system board and processor.
NOTE: The original thermal grease can be reused if the original processor and
processor fan and heat-sink assembly are reinstalled together. If either the
processor or the processor fan and heat-sink assembly is replaced, use the thermal
grease provided in the kit to ensure that thermal conductivity is achieved.

Procedure

1 Apply new thermal grease to the top of the processor.
2 Place the processor fan and heat-sink assembly over the processor.
3 Align the captive screws on the processor fan and heat-sink assembly with the
screw holes on the system board.
4 Tighten the captive screws that secure the processor fan and heat-sink assembly to
the system board.
5 Connect the processor fan cable to the system board connector (FANCPU). See
"System-Board Components" on page 11.

Postrequisites

1 Replace the fan shroud. See "Replacing the Fan Shroud" on page 15.
2 Replace the computer cover. See "Replacing the Computer Cover" on page 13.
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Replacing the Processor Fan and Heat-sink Assembly