Dell Inspiron 14 (3443, Early 2015) - Manual (Page 67)

Removing the 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: For maximum cooling of 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 battery .
2 Remove the optical drive .
3 Remove the base cover .
4 Remove the memory module(s) .
5 Remove the wireless card .
6 Remove the hard drive .
7 Remove the keyboard .
8 Remove the palm rest .
9 Remove the system board .
Procedure
NOTE: The appearance of the heat-sink assembly on your system may
differ from the image below.
1 Turn the system board over and place it on a flat surface.
2 Disconnect the fan cable from the system board.
3 In sequential order (indicated on the heat-sink), loosen the captive
screws that secure the heat-sink assembly to the system board.
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