Dell OptiPlex 330 (Late 2007) - Manual (Page 60)

3. If the release lever on the socket is not fully extended, move it to that position.
4. Align the pin-1 corner of the processor and socket.
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.
8. Apply the new thermal grease to the top of the processor.
9. Install the heat sink assembly:
a. Place the heat sink and fan assembly back onto the heat-sink assembly bracket.
b. Ensure that the two clamp grips are aligned with the two bracket projections.
c. Hold the heat sink fan assembly in place and rotate the clamp lever 180 degrees clockwise to secure the heat sink and fan assembly.
NOTICE: You must position the processor correctly in the socket to avoid permanent damage to the processor and the computer when you turn on the
computer.
1 processor cover 2 tab
3 processor 4 processor socket
5 center cover latch 6 release lever
7 front alignment-notch 8 socket and processor pin-1 indicator
9 rear alignment-notch
NOTICE: To avoid damage, ensure that the processor aligns properly with the socket, and do not use excessive force when you install the processor.
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.
NOTICE: Ensure that the floppy drive and audio cables are not routed so that they are pinched when the heat sink assembly is installed.
NOTICE: Ensure that the heat sink assembly is correctly seated and secure.