Dell Vostro 400, Service Manual, Page: 73 / 118

Removing and Replacing Parts in the Midsize Chassis 4-21
Processor SEC Cartridge/Heat Sink Assembly
Figure 4-22. Shroud and SEC Cartridge/Heat Sink Removal
To remove a processor single-edge contact (SEC) cartridge/heat sink assembly,
follow these steps:
1. Rotate the power supply away from the processor airflow shroud.
2. Remove the airflow shroud from the processor(s).
Squeeze both pairs of tabs on top of the shroud and lift it out of the chassis.
3. Unscrew and remove the two thumbscrews that secure the heat sink to
the system board.
4. Press the SEC cartridge release latches inward until they snap into
position.
WARNING: The processor SEC cartridge/heat sink assembly can get
extremely hot. Be sure the assembly has had sufficient time to cool
before you touch it.
SEC cartridge
release
latches (2)
heat sink
SEC cartridge
guide bracket assembly
alignment slot
thumbscrews (2)
tabs (2)
shroud