Dell Inspiron 15 (5548, Early 2015) - Manual (Page 48)

Replacing the Heat Sink
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.
CAUTION: Incorrect alignment of the heat sink can cause damage to
the system board and processor.
NOTE: The original thermal grease can be reused if the original system
board and heat sink are reinstalled together. If either the system board
or the heat sink is replaced, use the thermal pad provided in the kit to
make sure that thermal conductivity is achieved.
Procedure
NOTE: The original thermal grease can be reused, if the original system
board and fan are reinstalled together. If either the system board or the
fan is replaced, use the thermal pad provided in the kit to make sure that
thermal conductivity is achieved.
1 Align the screw holes on the heat sink with the screw holes on the
system board.
2 In sequential order (indicated on the heat sink), replace the screws that
secure the heat sink to the system board.
Post-requisites
1 Replace the base frame .
2 Replace the keyboard .
3 Replace the fan .
4 Follow the procedure from step 3 to step 5 in replacing the hard drive .
5 Replace the battery .
6 Replace the base cover .
48