Dell 7420, 5420 owner manual Replacing the Processor

40 Replacing the Processor

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

NOTE: If you install a new processor, a new thermal cooling assembly including an affixed thermal pad or a new thermal pad along with documentation to illustrate proper installation is shipped.

1Align the pin-1 corner of the processor module with the pin-1 corner of the ZIF socket, then insert the processor module.

NOTE: The pin-1 corner of the processor module has a triangle that aligns with the triangle on the pin-1 corner of the ZIF socket.

When the processor module is properly seated, all four corners are aligned at the same height. If one or more corners of the module are higher than the others, the module is not seated properly.

CAUTION: To avoid damage to the processor, hold the screwdriver perpendicular to the processor when turning the cam screw.

2Tighten the ZIF socket by turning the cam screw clockwise to secure the processor module to the system board.

Postrequisites

1Replace the processor heat-sink assembly. See "Replacing the Processor Heat-Sink" on page 107.

2Follow the instructions from step 4 to step 7 in "Replacing the System Board" on page 103.

3Replace the fan. See “Replacing the Fan” on page 65.

4Replace the speakers. See “Replacing the Speakers” on page 69.

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

6Follow the instructions from step 4 to step 5 in "Replacing the Optical Drive" on page 43.

7Replace the memory module(s). See "Replacing the Memory Module(s)" on page 33.

8Replace the palm rest. See "Replacing the Palm Rest" on page 49.

9Replace the keyboard. See "Replacing the Keyboard" on page 25.

10Replace the base cover. See "Replacing the Base Cover" on page 29.

Replacing the Processor 97