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16 Cisco 12012 Gigabit Switch Router Card Cage Assembly Replacement Instructions
Removing and Replacing a Card Cage Assembly
Step 3 Loosen the two captive screws at the top and bottom of the alarm card. (Refer to
Figure 8a.)
Note Unlike the line cards and 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 the line cards and the RP.
Step 4 Using a flat-blade screwdriver, gently pry at the top and bottom of the alarm card carrier
to unseat the card from the backplane connector.
Step 5 Grasp the card carrier edge with one hand and place your other hand under the carrier to
support it (refer to Figure 8b.) Slide the alarm card out of the card slot and place it
immediately on the antistatic mat.
Figure 8 Removing an Alarm Card
Removing the Cards From the Lower Card Cage
The lower card cage is located directly behind the air filter tray and an air deflector. To access the
lower card cage, you must first lower the air filter tray and raise and secure the air deflector.
Perform the following steps to remove the clock and scheduler cards and the switch fabric cards from
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.
ACTIVE
0
CARRIER
RX PKT
ACTIVE
1
CARRIER
RX PKT
ACTIVE
2
CARRIER
RX PKT
ACTIVE
3
CARRIER
RX PKT
Q OC-3/STM-POS
0
ACTIVE
CARRIER
RX PKT
OC-12/STM-4 ATM
ACTIVE
CARRIER
RX PKT
OC-12/STM-4 POS
0
ACO/LT
ALARM
CSC
0
FAIL
1
0
1
2
ENABLED
CRITICAL
MAJOR
MINOR
SFC
ALARM 1
ALARM 2
H10906
Loosen
captive
screws
a
Grasp card carrier to
slide card out of slot
Upper card cage
Alarm card
b