Dell DSS 1510 Owner's Manual page 86

NOTE: To ensure proper system cooling, you must install a processor blank in any empty processor socket.
1. Follow the safety guidelines listed in the Safety instructions section.
2. Follow the procedure listed in the Before working inside your system section.
3. If connected, disconnect the cables from expansion card(s).
4. If required, remove the PCIe expansion card riser.
5. Remove the cooling shroud.
NOTE: If applicable, close the expansion card latch on the cooling shroud to release the full length card.
6. Keep the Phillips #2 screwdriver ready.
WARNING: The heat sink will be hot to touch for some time after the system has been powered down. Allow the heat
sink to cool before removing it.
Steps
1. To remove a heat sink of up to 135 W, perform the following steps.
a) Loosen one of the screws that secure the heat sink to the system board.
Allow some time (approximately 30 seconds) for the heat sink to loosen from the processor.
b) Loosen the screw that is diagonally opposite the screw that you first loosened.
c) Repeat the procedure for the remaining screws.
Figure 41. Removing the heat sink (up to 135 W)
1. captive screw (4)
3. processor socket
2. To remove a 140 W heat sink, perform the following steps.
a) Loosen the screw (1), that secures the heat sink over CPU1.
Allow some time (approximately 30 seconds) for the heat sink to loosen from the processor.
b) Loosen the screw (2), that is diagonally opposite the screw that you first loosened.
c) Repeat the procedure for the remaining four screws following the order that they are numbered.
86 Installing and removing system components
2. heat sink
4. screw hole (4)