Dell 5423 owner manual Replacing the Thermal-Cooling Assembly

28 Replacing the Thermal-Cooling Assembly

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

1Clean the thermal grease from the bottom of the thermal-cooling assembly and reapply it.

2Align the screw holes on the thermal-cooling assembly with the screw holes on the system board.

3In sequential order (indicated on the heat sink), tighten the captive screws that secure the thermal-cooling assembly to the system board.

4Connect the fan cable to the system-board connector.

Postrequisites

1Follow the instructions from step 2 to step 5 in "Replacing the System Board" on page 61.

2Replace the wireless Mini-Card. 

See "Replacing the Wireless Mini-Card" on page 41.

3Replace the hard drive. See "Replacing the Hard Drive" on page 37.

4Replace the battery. See "Replacing the Battery" on page 33.

5Replace the palm-rest assembly. 

See "Replacing the Palm-Rest Assembly" on page 29.

6Replace the keyboard. See "Replacing the Keyboard" on page 23.

7Replace the optical drive. 

See "Replacing the Optical-Drive Assembly" on page 17.

8Replace the memory module(s). 

See "Replacing the Memory Module(s)" on page 13.

9Follow the instructions in "After Working Inside Your Computer" on page 9.

Replacing the Thermal-Cooling Assembly 69