Dell Inspiron 15 (3531, Mid 2014) - Manual (Page 49)

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: 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 battery .
2 Remove the base cover .
3 Follow the procedure from step 1 to step 3 in “Removing the Hard Drive ”.
4 Remove the keyboard .
5 Remove the wireless card .
6 Remove the palm rest .
7 Follow the procedure from step 1 to step 5 in “Removing the System
Board ”.
Procedure
NOTE: The heat-sink assembly may look different on your computer
depending on the configuration you ordered.
1 Disconnect the fan cable from the system board.
2 In sequential order (indicated on the heat-sink assembly), remove the
screws that secure the heat-sink assembly to the system board.
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