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12 Cisco 12012 Gigabit Switch Router Card Cage Assembly Replacement Instructions
Removing and Replacing a Card Cage Assembly
Removing the Cards From the Upper Card Cage
This section provides the procedures for removing the line cards, RP, and alarm card from the upper
card cage.
Note You must remove any blank cards installed in the upper card cage and retain them for use in
the replacement card cage. Blank cards must be installed in slots without cards to maintain proper
air flow and for EMI considerations.
Removing a Line Card From the Upper Card Cage
Perform the following steps to remove a line card from the upper card cage:
Step 1 Attach an ESD wrist strap to your wrist and to one of the two ESD connection sockets
located on the front edges of the upper card cage or to bare metal on the frame.
Step 2 Proceeding from left to right, identify each line card and write down the following
information:
• The line card’s slot number. When you install the line cards in the replacement card
cage assembly, install them in the same card slots.
• The interface cable connections to the line card ports. You will reconnect the interface
cables to the same line card ports.