Specifications

18
Cisco 12010, Cisco 12410, and Cisco 12810 Router Clock and Scheduler, Switch Fabric, and Alarm Card Replacement Instructions
OL-13810-01
Removing and Installing the External Alarm Display
Caution Verify that the openings on the card ejector cams pass over the tabs; otherwise, one or both ejector levers
might bind when you attempt to close the ejector levers, damaging or breaking one or both ejector levers.
Step 6 Continue sliding the card into the card cage slot until the openings on the card ejector cams engage the
tabs on each side of the card cage slot.
Step 7 To seat the card in the backplane connector, grasp both card ejector levers and pivot them inward toward
the middle of the card carrier until they are flush against the front edge of the card carrier.
Step 8 Pivot the air filter door up so that it is aligned with the opening of the switch fabric and alarm card cage.
Step 9 Secure the air filter door to the chassis with the two panel screws in the upper corners.
Caution Mbus ROM upgrade must be performed when an alarm card is installed or replaced.
Removing and Installing the External Alarm Display
Procedures for removing and installing the external alarm display are described in the following
sections:
• Removing the External Alarm Display, page 18
• Installing the External Alarm Display, page 19
Removing the External Alarm Display
To replace the external alarm display assembly, follow these steps:
Step 1 Attach an ESD-preventive wrist strap to your wrist and connect the leash to one of the ESD sockets on
the front of the chassis or to a bare metal surface. (See Figure 4 on page 9.)
Step 2 If there are any external alarm cables connected to the ALARM A or ALARM B connectors, remove
them.
Step 3 Loosen the two screws that secure the cable that comes out of the chassis and attaches to the alarm
display assembly input connector.
Step 4 Disconnect the connector.
Step 5 Loosen the two panel screws, one on each side of the alarm display assembly, and remove the alarm
display assembly.