Cisco 3745 Installationsanleitung PDF herunterladen (Seite 3)

Installing Field-Replaceable Units in Cisco 3745 Routers

78-14308-02

Safety Recommendations and Warnings

Warning

Before working ona system thathas anon/off switch, turnOFF the powerand unplug thepower cord.

Toseetranslations of thewarningsthat appear inthispublication, refer to the

RegulatoryCompliance

and Safety Information

document that accompanied this device.

Warning

The ISDN connection is regarded as a source of voltage that should be inaccessible to user contact.

Do not attempt to tamper with or open any public telephone operator (PTO)-provided equipment or

connection hardware. Any hardwired connection (other than by a nonremovable,

connect-one-time-only plug) must be made only by PTO staff or suitably trained engineers. To see

translations of the warnings that appear in this publication, refer to the

Regulatory Compliance and

Safety Information

document that accompanied this device.

Warning

The Ethernet 10BaseT, Token Ring, serial, console, and auxiliary ports contain safety extra-low

voltage (SELV) circuits. BRI circuits are treated like telephone-network voltage (TNV)circuits. Avoid

connecting SELV circuits to TNV circuits. To see translations of the warnings that appear in this

publication, refer to the

Regulatory Compliance and Safety Information

document that accompanied

this device.

The following warning applies to routers with DC power supplies:

Warning

Before performing any of the following procedures,ensure that power is removed fromthe DC circuit.

To ensure that all power is OFF, locate the circuit breaker on the panel board that services the DC

circuit, switch the circuit breaker to the OFF position, and tape the switch handle of the circuit

breaker in the OFF position. To see translations of the warnings that appear in this publication, refer

to the

Regulatory Compliance and Safety Information

document that accompanied this device.

The following warning applies to routers with AC power supplies:

Warning

Thisproduct reliesonthe building'sinstallation for short-circuit (overcurrent)protection. Ensure that

the protective device is rated not greater than:

15A, 120VAC (10A, 240VAC)

Toseetranslations of thewarningsthat appear inthispublication, refer to theRegulatory Compliance

and Safety Information document that accompanied this device.

Warning

Before working on equipment that is connected to power lines, remove jewelry (including rings,

necklaces, and watches). Metal objects will heat up when connected to power and ground and can

causeserious burns or weldthemetal object totheterminals. Tosee translations of thewarningsthat

appear in this publication, refer to the

Regulatory Compliance and Safety Information

document that

accompanied this device.

Follow these guidelines when working on equipment powered by electricity:

• Locate the room’s emergency power-off switch. Then, if an electrical accident occurs, you can

quickly shut the power off.

• Before working on the system, turn off the power and unplug the power cord.

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