Dell DL4000 Owner's Manual page 51

Figure 21. Removing and installing the processor heat sink
1. heat sink
3. retention screws (2)
CAUTION: The processor is held in its socket under strong pressure. Be aware that the
release lever can spring up suddenly if not firmly grasped.
8. Position your thumb firmly over the processor socket-release lever near the unlock icon
release the lever from the locked position by pushing down and out from under the tab.
9. Similarly, position your thumb firmly over the processor socket-release lever near the lock icon
and release the lever from the locked position by pushing down and out from under the tab. Rotate
the lever 90 degrees upward.
2. retention sockets (2)
4. processor
and
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