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Microprocessor

Removing the Microprocessor

CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Owner's Manual or Product Information Guide.

1. Shut down the computer through the Start menu.
   
   
2. Ensure that your computer and attached devices are turned off. If your computer and attached devices did not automatically turn off when you shut down your computer, turn them off now.
   
   

NOTICE: To disconnect a network cable, first unplug the cable from your computer and then unplug it from the network wall jack.

3. Disconnect any telephone or telecommunication lines from the computer.
   
   
4. Disconnect your computer and all attached devices from their electrical outlets, and then press the power button to ground the system board.
   
   
5. Remove the computer stand, if it is attached.
   
   

CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before you open the cover.

6. Open the computer cover.
   
   

NOTICE: Before touching anything inside your computer, ground yourself by touching an unpainted metal surface, such as the metal at the back of the computer. While you work, periodically touch an unpainted metal surface to dissipate any static electricity that could harm internal components.

7. Disconnect the cooling fan power cable from the FAN1 connector on the system board.
   
   
8. Disconnect the power cable from the 12VPOWER1 connector on the system board.
   
   

CAUTION: The heat sink assembly can get very hot during normal operation. Be sure that the assembly has had sufficient time to cool before you touch it.

9. Remove the heat-sink/blower assembly:
   
   
   1. Press in the tab on the green securing clip to remove the clip from the retention base.
      
      

2. Remove the heat-sink/blower assembly by pulling out the retention base tab while you lift one end of the heat sink.
   
   

NOTICE: Lay the heat sink down with the thermal material facing upward.

10. Remove the two screws on the blower to remove it from the heat sink.
    
    

NOTICE: Do not discard the blower. You will reuse it. If you are installing a microprocessor upgrade kit from Dell, discard the original heat sink. If you are not installing a microprocessor upgrade kit from Dell, reuse the original heat sink when you install your new microprocessor.

NOTICE: Be careful not to bend any of the pins when you remove the microprocessor from the socket. Bending the pins can permanently damage the microprocessor.

11. Pull the release lever straight up until the microprocessor is released, and then remove the microprocessor from the socket.
    
    

Installing the Microprocessor

NOTICE: Ground yourself by touching an unpainted metal surface on the back of the computer.

NOTICE: Be careful not to bend any of the pins when you unpack the new microprocessor. Bending the pins can permanently damage the microprocessor. If any of the pins on the microprocessor appears to be bent, contact Dell for instructions on obtaining technical assistance.

1. Unpack the new microprocessor.
   
   

NOTICE: You must position the microprocessor correctly in the socket to avoid permanent damage to the microprocessor and the computer when you turn on the computer.

2. If the release lever on the socket is not fully extended, move it to that position.
   
   
3. Align the pin-1 corners of the microprocessor and socket.
   
   

NOTICE: When you place the microprocessor in the socket, ensure that all of the pins fit into the corresponding holes on the socket.

4. Set the microprocessor lightly in the socket and ensure that all pins are headed into the correct holes. Do not use force, which could bend the pins if the microprocessor is misaligned. When the microprocessor is positioned correctly, press it with minimal pressure to seat it.
   
   
5. When the microprocessor is fully seated in the socket, pivot the release lever back toward the socket until it snaps into place to secure the microprocessor.
   
   

NOTICE: If you are not installing a microprocessor upgrade kit from Dell, reuse the original heat-sink/blower assembly when you replace the microprocessor.

If you are installing a microprocessor replacement kit from Dell, return the microprocessor to Dell in the same package in which your replacement kit was sent.

6. Reinstall the two screws that attach the blower to the heat sink.
   
   
7. Install the heat-sink/blower assembly:
   
   
   1. Place the one end of the heat-sink assembly under the tab on one side of the retention base.
      
      
   2. Lower the assembly until the heat sink fits securely under the tab on the retention base.
      
      
   3. Insert the securing clip by placing the notched end of the clip opposite the tab into the slot on the retention base. Press on the securing clip tab and lower the securing clip into place. Make sure that the notched ends of the securing clip are secured in the retention base slots.
      
      
8. Plug the fan cable into the FAN1 connector on the system board.
   
   
9. Plug the power cable into the 12VPOWER1 connector on the system board.
   
   
10. Close the computer cover.
    
    
11. Attach the computer stand (optional).
    
    

NOTICE: To connect a network cable, first plug the cable into the network wall jack and then plug it into the computer.

12. Connect your computer and devices to electrical outlets, and turn them on.
    
    

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