Dell OptiPlex GX150 - Manual (Page 121)

Installing a GPA (AIMM) Card
4. Close the computer cover .
To remove a GPA card, perform the following steps.
1. Press on the AGP card clip lever so that the tab is not covering the card edge bottom.
2. Lift the card's front end up, and slightly tilt it upward until the other card end is free from the AGP card clip tab.
Microprocessor
To replace the microprocessor, perform the following steps.
1. Turn off the computer and devices, disconnect them from their electrical outlets, wait 10 to 20 seconds, and the open the computer cover .
2. Disconnect the cooling fan power cable from the FAN1 connector on the system board.
3. On the small mini-tower system, remove the airflow shroud as shown in the following illustration.
4. Remove the cooling fan/heat sink assembly.
Your system has one of two types of heat sink clip —a green-tabbed clip or a toggle clip.
l For systems with the green-tabbed clip, press down on the inside edge of the green tab as shown in the following illustration.
Remove the clip from the socket, and then remove the heat sink from the microprocessor.
1 Front end of GPA card
2 Back end of GPA card
3 GPA connector
4 AGP card clip tab
5 AGP card clip
6 AGP card clip lever tab
7 AGP card clip lever
NOTE: Dell recommends that only a technically knowledgeable person perform the following procedure.
CAUTION: To avoid the possibility of electric shock, turn off the computer and any peripherals, disconnect them from their
electrical outlets, and then wait at least 5 seconds before you open the computer cover. Also, before you upgrade the
microprocessor, see the other precautions in "
Safety Information ."
CAUTION: The microprocessor and heat sink assembly can get extremely hot. Be sure the assembly has had sufficient time to
cool before you touch it.
1 Anchor tabs (3)