3. Remove the memory fan assembly (see Memory fan on page 74).
4. Disconnect the lower and upper fan plugs from the system board connectors (1), as shown in the
following figure.
Figure 4-25 Removing the system fan
5. Press in on the ribbed release snap of the system fan housing (2), and then rotate the fan housing
down (3).
6. Lift the system fan assembly out of the chassis.
Replacing the system fan assembly
To replace the system fan assembly, align the four plastic tabs protruding from the bottom back edge
of the fan assembly with corresponding mounting holes on the rear of the chassis.
Rotate the fan assembly up against the rear chassis panel, and then snap it into place.
The fan assembly electrical connectors and their mating system board header connectors are red. To
locate the system fan header connectors on the system board, refer to the service label located on the
inside of the access panel.
Memory fan
To remove the memory fan:
1. Disconnect power from the system (see
Predisassembly procedures on page 52).
2. Remove the side access panel (see
Side access panel on page 58).
74 Chapter 4 Removal and replacement procedures ENWW
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