Datasheet

Installing 2T16S Network Processor Modules in the Cisco 4000 Series

78-3277-03

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

quickly turn OFF the power.

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

• Disconnect all power before doing the following:

–

Installing or removing a router chassis or network processor module

–

Working near power supplies

–

Performing a hardware upgrade

• Do not work alone if potentially hazardous conditions exist.

Warning

Before opening the chassis, disconnect the telephone-network cables to avoid contact with

telephone-network voltages.

Warning

Do not work on the system or connect or disconnect cables during periods of lightning activity.

• Never assume that power is disconnected from a circuit. Always check.

Warning

Do not touch the power supply when the power cord is connected. For systems 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.

• Look carefully for possible hazards in your work area, such as moist floors, ungrounded power

extension cables, and missing safety grounds.

• Never assume that power is disconnected from a circuit. Always check.

• If an electrical accident occurs, proceed as follows:

–

Use caution, and do not become a victim yourself.

–

Turn OFF power to the system.

–

If possible, send another person to get medical aid. Otherwise, determine the condition of the

victim and then call for help.

–

Determine if the person needs rescue breathing or external cardiac compressions; then take

appropriate action.

Preventing Electrostatic Discharge Damage

Electrostatic discharge (ESD) can damage equipment and impair electrical circuitry. It occurs when

electronic 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 properly guard against ESD damage and shocks, the wrist

strap and cord must operate effectively. If no wrist strap is available, ground yourself by touching the

metal part of the chassis.