Dell Dimension E520 Service Manual page 76

Removing and Installing Parts: Dell Dimension E520 Service Manual
a. Pivot the mechanism upward and gently squeeze in on the sides to release the mechanism from the two tab slots
holding it in place.
b. Set the retention mechanism aside.
4. Unhook the floppy drive cable from the clips on the processor shroud and move it out of the way.
1 release tab 2
5. Use a long Phillips screwdriver to loosen the two captive screws, one on each side of the heat sink assembly.
6. Rotate the heat sink assembly towards the rear of the computer, and then remove it from the computer.
1 heat sink and fan shroud assembly
7. Place the heat sink assembly on its side in a safe place.
8. Disconnect the system fan cable from the system board (see
file:///T|/htdocs/systems/dimE520/en/SM_EN/parts.htm[10/16/2012 1:05:24 PM]
card retention mechanism 3 card retention door
2 captive screw housing (2)
System Board Components).