Specifications

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Cisco 12010, Cisco 12410, and Cisco 12810 Router Clock and Scheduler, Switch Fabric, and Alarm Card Replacement Instructions
OL-13810-01
Preparing for Installation
Figure 3 External Alarm Display Assembly
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.
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53369
Alarm display