Specifications
19
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
Step 3 Disconnect any external alarm cable attached to the alarm card connector.
Step 4 Loosen the two captive screws at the top and bottom of the alarm card faceplate (see Figure 9a).
Note Unlike line cards and the RP, the alarm card does not have card ejector levers. The alarm card backplane
connector is smaller, has fewer pins, and is easier to seat and unseat than line cards and the RP.
Step 5 Pull on the handle on the alarm card faceplate to unseat the card from the backplane connector.
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 are always populated during replacement of an alarm card.
Step 6 Pull the card halfway out of its slot and place your other hand under the carrier to support it (see
Figure 9b). Slide the alarm card out of the card slot and place it immediately on the antistatic mat.
If you plan to return the old alarm card to the factory, repackage it in the shipping container you received
with the replacement alarm card.
Figure 9 Removing an Alarm Card from the Upper Card Cage
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Q OC-3/STM-POS
6DS3–SMB P
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CDHNT CD
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CDHNT CD
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OC-12/STM-4 ATM
FAST ETERNET
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ROUTE PROCESSOR
SLOT-1
COLL
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RJ-45
MII
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CRITICAL
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Loosen
captive
screws
Use handle to pull
card out of slot
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b