Dell Inspiron 15 (3543, Early 2015) - Manual (Page 75)

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 base cover .
3 Follow the procedure from step 1 to step 3 in “Removing the Hard Drive ”.
4 Follow the procedure from step 1 to step 2 in “Removing the Optical
Drive ”.
5 Remove the wireless card .
6 Remove the keyboard .
7 Follow the procedure from step 1 to step 7 in “Removing the Palm Rest ”.
8 Remove the battery-connector board .
9 Remove the optical-drive connector board .
10 Follow the procedure from step 1 to step 5 in “Removing the System
Board ”.
Procedure
NOTE: The heat sink may look different on your computer depending
on the configuration you ordered.
1 Turn the system board over and place it on a flat and clean surface.
75