Specifications

8
Cisco 12016, Cisco 12416, and Cisco 12816 Router Clock and Scheduler, Switch Fabric, and Alarm Card Replacement Instructions
OL-13811-01
Preparing for Installation
Monitoring Alarm Card, CSC, and SFC Status
The alarm card faceplate has one pair of LEDs that provides a visual status of the alarm card, and five
pairs of LEDs that provide a visual status of the two CSCs and the three SFCs in the switch fabric card
cage (see Figure 2 on page 6).
The LED pair representing the alarm card itself is not labeled, and consists of one green LED labeled
ENABLED and one yellow LED labeled FAIL. When the green LED is on, this alarm card has been
detected by the router and is functioning properly. When the yellow LED is on, the router has detected
a fault in the alarm card.
Each card in the switch fabric card cage has a corresponding pair of LEDs on the alarm card faceplate.
Each LED pair consists of one green LED labeled ENABLED and one yellow LED labeled FAIL. When
the green LED is on, the card in the corresponding slot in the switch fabric card cage has been detected
by the system and is functioning correctly. When the yellow LED is on, the router has detected a fault
in the card in the corresponding slot in the switch fabric card cage.
Preparing for Installation
Installation preparation is presented in the following sections:
• Safety Guidelines
• Preventing Electrostatic Discharge Damage
• Required Tools and Equipment
• Related Documentation
Safety Guidelines
Before you perform any procedure in this publication, review the safety guidelines in this section to
avoid injuring yourself or damaging the equipment. In addition, review the safety warnings listed in the
Regulatory Compliance and Safety Information for the Cisco 12000 Series Internet Router publication
that accompanied your router before installing, configuring, or maintaining the router.
The following guidelines are for your safety and to protect equipment. The guidelines do not include all
hazards. Be alert.
Safety with Equipment
• Always disconnect all power cords and interface cables before moving the system.
• Never assume that power is disconnected from a circuit; always check.
• Keep tools and assembly components away from walk areas.
• Do not work alone if potentially hazardous conditions exist.
• Do not perform any action that creates a potential hazard to people or makes the equipment unsafe.
• Carefully examine your work area for possible hazards such as moist floors, ungrounded power
extension cables, and missing safety grounds.