Dell Precision 220 - Manual (Page 41)

1. Insert the new microprocessor into the system board connector.
Press the processor firmly into its connector until it is fully seated. You must use up to 25 lb of force to fully seat the processor in its connector.
2. Replace the airflow shroud.
Squeeze in on the two pairs of tabs on the shroud, align it with the slots in the microprocessor fan, and lower it into place.
3. After you replace the computer cover and restart the system , run the Dell Diagnostics to verify that the new microprocessor is operating
correctly.
Microprocessor Cooling Fan
Figure 31. Microprocessor Cooling Fan Removal
To remove the microprocessor cooling fan, perform the following steps:
1. Remove the computer cover .
2. Rotate the system power supply .
1 Airflow shroud
2 Thumbscrews (2)
3 Processor/heat sink assembly
4 Guide bracket
5 Second processor (terminator card if a second
processor is not present)
1 Fan power cable
2 Fan
3 Plastic lock
4 Latching tabs (4)