•
When removing a component, use available ejector levers or captive installation screws, if any, to release
the bus connectors from the backplane or midplane.
•
Handle components by their handles or edges only; do not touch the printed circuit boards or connectors.
•
Place a removed component board side up on an antistatic surface or in a static-shielding container. If
you plan to return the component to the factory, immediately place it in a static-shielding container.
•
Avoid contact between the printed circuit boards and clothing. The wrist strap only protects components
from ESD voltages on the body; ESD voltages on clothing can still cause damage.
•
Never attempt to remove the printed circuit board from the metal carrier.
For the safety of your equipment, periodically check the resistance value of the antistatic wrist strap. It
should be between 1 and 10 Mohm.
Note
Site Planning
The sections describe how to plan for the installation of the Cisco ASR 920 Series Router.
General Precautions
Observe the following general precautions when using and working with your Cisco ASR 920-24SZ-IM,
ASR-920-24SZ-M, ASR-920-24TZ-M Router:
•
Keep your system components away from radiators and heat sources and do not block cooling vents.
•
Do not spill food or liquids on your system components and never operate the product in a wet
environment.
•
Do not push any objects into the openings of your system components. Doing so can cause fire or electric
shock by shorting out interior components.
•
Position system cables and power supply cable carefully. Route system cables and the power supply
cable and plug so that they are not stepped on or tripped over. Be sure that nothing else rests on your
system component cables or power cable.
•
Do not modify power cables or plugs. Consult a licensed electrician or your power company for site
modifications. Always follow your local and national wiring rules.
•
If you turn off your system, wait at least 30 seconds before turning it on again to avoid damage of system
components.
Site Planning Checklist
Use the following checklist to perform and account for all the site planning tasks described in this chapter:
•
The site meets the environmental requirements.
Cisco ASR-920-24SZ-IM, ASR-920-24SZ-M, ASR-920-24TZ-M Aggregation Services Router Hardware Installation
Guide
31
Preparing for Installation
Site Planning
