Cisco 1700 series Manuale di configurazione - Pagina 12

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Cisco 1700 series Manuale di configurazione
Safety Warnings

Electrical Warnings

The following warnings apply when you are working with electricity:
Warning
To avoid electric shock, do not connect safety extra-low voltage (SELV) circuits to telephone-network
voltage (TNV) circuits. LAN ports contain SELV circuits, and WAN ports contain TNV circuits. Some
LAN and WAN ports both use RJ-45 connectors. Use caution when connecting cables. Statement 1021
Warning
Caution No operator-serviceable parts inside. Refer servicing to qualified personnel. Statement 81
Follow these guidelines when working on equipment powered by electricity:
If an electrical accident occurs, proceed as follows:

Preventing Electrostatic Discharge Damage

Electrostatic discharge (ESD) can damage equipment and impair electrical circuitry. It can occur when
printed circuit cards are improperly handled and can result in complete or intermittent failures. Always
follow ESD prevention procedures when removing and replacing cards. Ensure that the router chassis is
electrically connected to earth ground. Wear an ESD-preventive wrist strap, ensuring that it makes good
skin contact. Connect the clip to an unpainted surface of the chassis frame to safely channel unwanted
ESD voltages to ground. To guard against ESD damage and shocks, the wrist strap and cord must be used
properly. If no wrist strap is available, ground yourself by touching the metal part of the chassis.
Caution
For safety, periodically check the resistance value of the antistatic strap, which should be between 1 and
10 megohms (Mohm).
Preventing Electrostatic Discharge Damage
12
Locate the emergency power-off switch in the room in which you are working. Then, if an electrical
accident occurs, you can quickly shut the power off.
Before working on the router, turn off power to the router and unplug the power cord.
Disconnect all power before doing the following:
Installing or removing a router chassis
Working near power supplies
Do not work alone if potentially hazardous conditions exist.
Never assume that power is disconnected from a circuit. Always check.
Look carefully for possible hazards in your work area, such as moist floors, ungrounded power
extension cables, and missing safety grounds.
Use caution; do not become a victim yourself.
Turn off power to the router.
If possible, send another person to get medical aid. Otherwise, determine the condition of the victim
and then call for help.
Determine if the victim needs rescue breathing or external cardiac compressions; then take
appropriate action.
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