Dell 7420, 5420 owner manual Replacing the Processor Heat-Sink

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

1Align the captive screws on the processor heat-sink with the screw holes on the system board.

2In sequential order (indicated on the processor heat-sink), tighten the captive screws that secure the processor heat-sink to the system board.

Postrequisites

1Follow the instructions from step 4 to step 7 in "Replacing the System Board" on page 103.

2Replace the fan. See "Replacing the Fan" on page 65.

3Replace the speakers. See "Replacing the Speakers" on page 69.

4Follow the instructions from step 5 to step 8 in "Replacing the Hard Drive" on page 39.

5Follow the instructions from step 4 to step 5 in "Replacing the Optical Drive" on page 43.

6Replace the memory module(s). See "Replacing the Memory Module(s)" on page 33.

7Replace the palm rest. See "Replacing the Palm Rest" on page 49.

8Replace the keyboard. See "Replacing the Keyboard" on page 25.

9Replace the base cover. See "Replacing the Base Cover" on page 29.

10Replace the battery. See "Replacing the Battery" on page 19.

11Follow the instructions in "After Working Inside Your Computer" on page 11.

Replacing the Processor Heat-Sink 107