174 | Removing and Installing System Components
Figure 3-18. The Top View of the Installed Air Baffle
3 Replace the system-board assembly. See "Installing a System-Board
Assembly" on page 171.
Heat Sinks

Removing the Heat Sink

CAUTION: Many repairs may only be done by a certified service technician. You
should only perform troubleshooting and simple repairs as authorized in your
product documentation, or as directed by the online or telephone service and
support team. Damage due to servicing that is not authorized by Dell is not
covered by your warranty. Read and follow the safety instructions that came with
the product.
NOTE: Place the foolproof pins of two processor heatsinks facing inside.