Dell Inspiron M421R (Late 2012) - Manual (Page 107)

Replacing the Processor Heat-Sink | 106
45 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 8. For additional safety best practices information, see the Regulatory
Compliance Homepage at dell.com/regulatory_compliance.
Procedure
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 Follow the instructions from step 4 to step 7 in "Replacing the System Board" on
page 102.
2 Replace the fan. See "Replacing the Fan" on page 64.
3 Replace the speakers. See "Replacing the Speakers" on page 68.
4 Follow the instructions from step 5 to step 8 in "Replacing the Hard Drive" on
page 38.
5 Follow the instructions from step 4 to step 5 in "Replacing the Optical Drive" on
page 42.
6 Replace the memory module(s). See "Replacing the Memory Module(s)" on page 32.
7 Replace the palm rest. See "Replacing the Palm Rest" on page 48.
8 Replace the keyboard. See "Replacing the Keyboard" on page 24.
9 Replace the base cover. See "Replacing the Base Cover" on page 28.
10 Replace the battery. See "Replacing the Battery" on page 18.
11 Follow the instructions in "After Working Inside Your Computer" on page 10.
book.book Page 106 Friday, September 7, 2012 10:23 AM