Dell XPS 12 (9Q23, Late 2012) - Manual (Page 32)

Replacing the Processor Heat-Sink
WARNING: Before working inside your computer, read the safety information
that shipped with your computer and follow the steps in "Before You Begin" on
page 7. After working inside your computer, follow the instructions in
"After Working Inside Your Computer" on page 9. For additional safety best
practices information, see the Regulatory Compliance Homepage at
dell.com/regulatory_compliance.
Procedure
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 ensure that thermal
conductivity is achieved.
1 Align the captive screws on the processor heat-sink with the screw holes on the
system board.
2 In sequential order (indicated on the processor heat-sink), tighten the captive
screws that secure the processor heat-sink to the system board.
Postrequisites
1 Replace the battery. See "Replacing the Battery" on page 14.
2 Replace the base cover. See "Replacing the Base Cover" on page 12.
3 Follow the instructions in "After Working Inside Your Computer" on page 9.
32 | Replacing the Processor Heat-Sink