Dell OptiPlex 330 (Late 2007) - Manual (Page 94)

5. Replace the computer cover.
6. Turn on power to the computer.
Processor
Removing the Processor and Heat Sink
1. Follow the procedures in Before You Begin .
2. Remove the computer cover (see Removing the Computer Cover ).
3. Carefully disconnect and move any cables that are routed over the heat sink assembly.
4. Loosen the captive screw on each side of the heat sink assembly.
5. Rotate the heat sink assembly upward, and remove the assembly from the computer.
6. Open the processor cover by sliding the release lever from under the center cover latch on the socket. Then pull the lever back to release the processor.
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide.
NOTICE: To prevent static damage to components inside your computer, discharge static electricity from your body before you touch any of your
computer's electronic components. You can do so by touching an unpainted metal surface on the computer chassis.
CAUTION: Despite having a plastic shield, the heat sink assembly may become very hot during normal operation. Be sure that it has had sufficient
time to cool before you touch it.
NOTICE: A strong thermal grease bond may exist between the processor and heat sink. Do not use excessive force to separate the heat sink assembly
from the processor to avoid damaging the processor.
1 heat sink assembly 2 captive screw housing (2)
NOTICE: Unless a new heat sink is required for the new processor, reuse the original heat sink assembly when you replace the processor.