Cisco Systems Cisco 12008 manual Removing the Fan Tray from the Lower Card Cage

Removing and Replacing the Fan Trays

The Cisco 12008 supports online insertion and removal of field-replaceable units (FRUs); thus, you can remove and replace a fan tray while the rest of the system remains powered up and fully operational.

Note If you replace a defective fan tray while the router is running, you must do so quickly to minimize the risk of overheating router components. The system shuts down approximately 2 minutes after reaching the shutdown temperature threshold; therefore, you should replace a defective fan tray within this time span.

You will need the following tools and parts to remove or install a fan tray:

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1/4-inch flat-blade screwdriver

ESD-preventive wrist strap

Lower card cage fan tray—product number GSR8-SYSBLOWER=

Power supply fan tray—productnumber GSR8-PWRBLOWER=

Removing the Fan Tray from the Lower Card Cage

To remove the fan tray from the lower card cage, perform the following steps.

Step 1 Loosen the two panel fastener screws on each side of the air filter assembly (see Figure 7-10); remove the assembly to expose the interior of the lower card cage and set it aside.

Step 2 Loosen the two captive installation screws at the sides of the fan tray.

Step 3 With one hand, grasp the ring-shaped insertion/extraction tab in the middle of the fan tray carrier; gently slide the fan tray halfway out of the guide rails to disengage the fan tray connector from the backplane (see Figure 7-10).

Step 4 Place your free hand beneath the fan tray to support its weight and slide the module completely out of the card cage.

Step 5 Set the fan tray aside.

Maintaining the Cisco 12008 7-39