Cisco 12012 - Manual (Page 23)

Cisco 12012 Gigabit Switch Router Card Cage Assembly Replacement Instructions 23
Removing and Replacing a Card Cage Assembly
Installing a New Card Cage Assembly
The new card cage assembly is shipped with a new air filter installed in the air filter tray. You must
replace the components you removed from the old card cage assembly in the new card cage
assembly.
Caution An empty card cage assembly weighs 65 lb (29.5 kg). You need two people to safely lift
the assembly. To prevent injury, keep your back straight and lift with your legs, not your back.
Perform the following steps to install the replacement card cage assembly:
Step 1 With one person positioned on each side of the card cage assembly, grasp the handle on
the front of the card cage assembly and the handhold cutout on the side of the card cage
assembly.
Step 2 Lift the card cage assembly and position it on the frame rails. Slide the card cage
assembly fully into the front of the frame until the card cage assembly flanges make
contact with the frame.
Note All electrical connections between the card cage assembly and the blower module
harnesses on the frame are made automatically when the card cage assembly is fully
inserted in the frame.
Step 3 Secure the card cage assembly to the frame by tightening the six captive screws.
Replacing the Cards in the Lower Card Cage
Perform the following steps to replace the cards in the lower card cage:
Step 1 Attach an antistatic wrist strap to yourself 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 To access the lower card cage card slots, perform the following steps:
(a) Loosen the two captive screws at the top of the air filter tray and pivot the tray down,
away from the lower card cage. (Refer to Figure 9.)
(b) Lift the air deflector up and secure it to the top of the lower card cage by turning the
air deflector latch knob counterclockwise. (Refer to Figure 10.)
Step 3 Select a card from the antistatic mat. Determine which lower card cage slot the card
should be installed in by checking the color of the label attached to the edge of the card
carrier (near the ejector levers). Light blue labels identify clock and scheduler cards
(installed in the upper two slots), and magenta labels identify switch fabric cards
(installed in the lower three slots).
Note Lower card cage slots are keyed to prevent you from inserting cards in the wrong
slots. You can install clock and scheduler cards only in the upper two card slots; switch
fabric cards only in the lower three slots.