Dell Inspiron 11 (3147, Mid 2014) - Manual (Page 39)

Removing 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 Working Inside Your Computer . After working inside your
computer, follow the instructions in After Working Inside Your
Computer . For more safety best practices, see the Regulatory
Compliance home page at dell.com/regulatory_compliance.
WARNING: The heat sink may become hot during normal operation.
Allow sufficient time for the heat sink to cool before you touch it.
CAUTION: To ensure maximum cooling for the processor, do not
touch the heat transfer areas on the heat sink. The oils in your skin can
reduce the heat transfer capability of the thermal grease.
Prerequisites
1 Remove the base cover .
2 Remove the battery .
Procedure
NOTE: The appearance of the heat sink and the number of screws will
vary if you purchased your computer with integrated graphics card.
1 Disconnect the fan cable from the system board.
2 In sequential order (indicated on the heat sink), loosen the captive screws
that secure the processor fan and heat-sink assembly to the system
board.
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