Dell Inspiron 11 (3147, Mid 2014) - Manual (Page 41)

Replacing 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.
Procedure
1 In sequential order, (indicated on the heat sink), tighten the captive
screws that secure the processor fan and heat-sink assembly to the
system board.
2 Connect the fan cable to the system board.
Post-requisites
1 Replace the battery .
2 Replace the base cover .
41