Cisco 3620 Przewodnik Instalacji Pobierz pdf (Strona 5)

Cisco 3600 Series Memory Upgrade Configuration Note 5

Preventing Electrostatic Discharge Damage

Follow these guidelines when working on equipment powered by electricity:

• 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 the power 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.

If an electrical accident occurs, proceed as follows:

• 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.

Preventing Electrostatic Discharge Damage

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

Tools and Equipment Needed

You need the following tools and equipment to remove and install SIMMs in a Cisco 3600 series

router:

• Number 1 Phillips screwdriver

• ESD-preventive wrist strap

• Antistatic mat

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Cisco 3620 Przewodnik Instalacji Strona 5