Specifications

Cisco 12010, Cisco 12410, and Cisco 12810 Router Clock and Scheduler, Switch Fabric, and Alarm Card Replacement Instructions

OL-13810-01

Removing and Installing a CSC or SFC

The switch fabric and alarm card cage is located below the line card and RP card cage, behind the air

filter door on the front of the chassis. (See Figure 5.) The switch fabric and alarm card cage has seven

keyed, vertical card slots for the clock and scheduler cards (CSCs) and switch fabric cards (SFCs). CSCs

are installed in the left two card slots (labeled CSC 0 and CSC 1); SFCs are installed in the next five slots

(labeled SFC 0, 1, 2, 3 and 4). Two alarm cards are installed in the right two card slots of the switch

fabric and alarm card cage, although they are not a part of the switch fabric.

Procedures for removing and installing a CSC or an SFC are described in the following sections:

• Opening the Air Filter Door, page 10

• Removing a Card from the Switch Fabric and Alarm Card Cage, page 11

• Installing a Card in the Switch Fabric and Alarm Card Cage, page 13

• Closing the Air Filter Door, page 13

Opening the Air Filter Door

To remove or install either a CSC or SFC, you must open the air filter door to gain access to the fabric

card cage. To access the fabric card cage, use Figure 5 as a reference and follow these steps:

Step 1 Attach an ESD-preventive wrist strap to your wrist and connect the leash to one of the ESD connection

sockets on the front of the chassis or to a bare metal surface on the chassis (see Figure 4 on page 9).

Step 2 Loosen the two captive screws on each side of the air filter door.

Step 3 Grasp the sides of the air filter door front cover and swing the door out and down, away from the switch

fabric and alarm card cage. The air filter door is attached to the chassis by a hinges on the bottom.

Caution Be especially careful not to damage the honeycomb screen on the back of the air filter door and on the

inside of the switch fabric and alarm card cage. Damaging the honeycomb screen can restrict the air flow

and cause overheating in the router, and it can diminish EMI protection.