Specifications

20
Cisco 12016, Cisco 12416, and Cisco 12816 Router Clock and Scheduler, Switch Fabric, and Alarm Card Replacement Instructions
OL-13811-01
Removing and Installing an Alarm Card
Installing an Alarm Card into the Upper Card Cage
To install an alarm card into the upper card cage, use Figure 10 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 3 on page 10).
Step 2 Grasp the handle on the alarm card faceplate with one hand and place your other hand under the card
carrier to support the card while guiding it into the card cage slot labeled Alarm 0 (see Figure 10a.)
Caution One edge of the card carrier faceplate is lined with an EMI-preventive gasket consisting of many raised,
conductive contacts. Be careful not to damage the gasket contacts, because a damaged card carrier gasket
can result in reduced EMI performance. Additionally, to ensure proper compression of the EMI gaskets,
be sure slot 0 or slot 15 is always populated during replacement of an alarm card.
Step 3 Carefully slide the alarm card carrier into the slot until it makes contact with the backplane connector,
then stop. Avoid touching the card circuitry or any connectors.
Step 4 Carefully push on the top and bottom of the alarm card faceplate to seat it in the backplane connector.
Step 5 Check to be sure that all slots are filled, especially slot 0 beside the alarm card. After all slots are
populated, tighten the two captive screws to secure the alarm card in the card slot (see Figure 10b).
Step 6 Connect any external device cable to the connector on the alarm card faceplate.
Step 7 Replace the upper card cage front cover.
Figure 10 Installing an Alarm Card into the Upper Card Cage
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