Dell 7420 Laptop User Manual


 
Replacing the Processor Heat-Sink | 107
44
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 9. 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 103.
2 Replace the fan. See "Replacing the Fan" on page 65.
3 Replace the speakers. See "Replacing the Speakers" on page 69.
4 Follow the instructions from step 5 to step 8 in "Replacing the Hard Drive" on
page 39.
5 Follow the instructions from step 4 to step 5 in "Replacing the Optical Drive" on
page 43.
6 Replace the memory module(s). See "Replacing the Memory Module(s)" on page 33.
7 Replace the palm rest. See "Replacing the Palm Rest" on page 49.
8 Replace the keyboard. See "Replacing the Keyboard" on page 25.
9 Replace the base cover. See "Replacing the Base Cover" on page 29.
10 Replace the battery. See "Replacing the Battery" on page 19.
11 Follow the instructions in "After Working Inside Your Computer" on page 11.
book.book Page 107 Wednesday, April 11, 2012 4:13 PM