Cisco 3825 Series - Manual (Page 15)

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Installing and Upgrading Fans in the Cisco 3825 Series Routers
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Upgrading the Cisco 3825 Fan Unit
Step 2 Remove the two screws that hold the top of the fan unit to the router. (See Figure 4 .)
Figure 4 Removing Screws Holding the Top of the Fan Unit
Step 3 Remove the four screws that hold the fan unit to the side of the chassis. (See Figure 5 .)
Figure 5 Removing Fan Mounting Screws from the Side of the Chassis
1 Screws holding the top of the fan unit to the router
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1 Fan mounting screws on the side of the
chassis
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