Dell Optiflex 740 User Manual page 150

1 socket and processor pin-1 indicator
4 processor socket
NOTICE: To avoid damage, ensure that the processor aligns properly with the socket, and do not use excessive force when you install the processor.
5. Set the processor lightly in the socket and ensure that the processor is positioned correctly.
6. While lightly pressing down on the processor, rotate the release lever back toward the system board until it snaps into place, securing the processor.
7. Clean the thermal grease from the bottom of the heat sink.
NOTICE: Ensure that you apply new thermal grease. New thermal grease is critical for ensuring adequate thermal bonding, which is a requirement for
optimal processor operation.
8. Apply the new thermal grease to the top of the processor.
9. Install the heat sink assembly:
a. Place the heat sink assembly back onto the heat-sink assembly bracket.
b. Rotate the heat sink assembly down towards the computer base and ensure that the two captive screws are properly aligned with the holes in
the system board
c. Tighten the two captive screws.
NOTICE: Ensure that the heat sink is correctly seated and secure.
1 heat sink assembly 2 heat-sink assembly bracket
10. Route the floppy drive cable through the cable routing clips on the heat sink assembly.
11. Replace the hard drive (see Installing a Hard
12. Replace the computer cover (see
2 processor 3
3 captive screw in housing (2)
Drive).
Replacing the Computer Cover).
release lever