Safety Warnings - Cisco 2600 Series Operation Manual

Safety Information

Safety Warnings

Safety warnings appear throughout this publication in procedures that, if performed
incorrectly, may harm you. A warning symbol precedes each warning statement.
Safety with Electricity
Warning
(including rings, necklaces, and watches). Metal objects will heat up when connected to
power and ground and can cause serious burns or weld the metal object to the terminals.
Warning
circuits to telephone-network voltage (TNV) circuits. LAN ports contain SELV circuits,
and WAN ports contain TNV circuits. Both LAN and WAN ports may use RJ-45
connectors. Use caution when connecting cables.
Warning
power to the router is OFF or ON. To avoid electric shock, use caution when working near
WAN ports. When detaching cables, detach the end away from the router first.
Warning
contact with telephone-network voltages.
Warning
lightning activity.
Warning
with a power switch, line voltages are present within the power supply even when the
power switch is OFF and the power cord is connected. For systems without a power
switch, line voltages are present within the power supply when the power cord is
connected.
2-2 Cisco Network Modules Hardware Installation Guide
Before working on equipment that is connected to power lines, remove jewelry
To avoid electric shock, do not connect safety extra-low voltage (SELV)
Hazardous network voltages are present in WAN ports regardless of whether
Before opening the chassis, disconnect the telephone-network cables to avoid
Do not work on the system or connect or disconnect cables during periods of
Do not touch the power supply when the power cord is connected. For systems