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•
Do not perform any action that creates a potential hazard to personnel or makes the
equipment unsafe.
•
Never install equipment that appears to be damaged.
•
Carefully examine your work area for possible hazards, such as moist floors,
ungrounded power extension cables, and missing safety grounds.
In addition, observe the following guidelines when working with any equipment that is
disconnected from a power source, but still connected to telephone or network wiring:
•
Never install telephone wiring during a lightning storm.
•
Never install telephone jacks in wet locations unless the jack is specifically designed for
wet locations.
•
Never touch uninsulated telephone wires or terminals unless the telephone line has been
disconnected at the network interface.
•
Use caution when installing or modifying telephone lines.
Preventing Electrostatic Discharge Damage
Many router components are sensitive to damage from static electricity. Some components
can be degraded by exposure to as little as 30 volts. You can generate static voltages as high
as 35,000 volts just by handling plastic or foam packing material, or by sliding an electronic
assembly across plastic or carpeting. Failure to exercise proper electrostatic discharge
damage (ESD) precautions can result in intermittent or complete failures of components.
To minimize the potential for ESD damage to electronic components, observe the following
guidelines:
•
Always wear an ESD wrist strap or ankle strap and ensure that it makes good contact
with your skin.
•
Insert the equipment end of your ESD strap (the banana plug) into the ESD socket in the
upper left edge of the upper card cage before you insert or remove a line card, a CSC,
or the RP.
Avoid contact between the card and your clothing. The wrist strap protects the card from
ESD voltages on the body only; EDS voltages on clothing can still cause electronic
component damage.
Safety Recommendations
Preparing for Installation 2-5
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Troubleshooting
