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Installing and Upgrading Fans in the Cisco 3825 Series Routers
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Upgrading the Cisco 3825 Fan Unit
Removing the Fan Unit
After you remove the router cover, follow these steps to remove the fan unit.
Note Before you begin, read the safety warnings as described in the “Safety Warnings and Guidelines” section
on page 2.
Step 1 Locate the three fan connectors on the motherboard and remove them by lifting the connector away from
the receptacle, as shown in Figure 3.
Figure 3 Lifting the Connector from the Receptacle
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