Cabletron Systems STS16-20D, STS16-20R manual Preventing Electrostatic Discharge Damage

Models: STS16-20R STS16-20D

1 258
Download 258 pages 63.79 Kb
Page 56
Image 56

42

Before working on the system, unplug the power cord. To avoid the possibility of electrical shock, unplug the power cord from the outlet before detaching the power cord from the switch.

Disconnect all power before doing the following:

Installing or removing a chassis

Working near power supplies

Performing a hardware upgrade

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.

Unplug the power cord(s).

If possible, send another person to get medical aid. Otherwise, assess 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 components are improperly handled and can result in complete or intermittent failures. Always follow ESD-prevention procedures when removing and replacing components. Ensure that the chassis is electrically connected to earth ground using an ESD mat or a ground wire. Wear an ESD-preventive wrist strap, ensuring that it makes good skin contact. To safely channel unwanted ESD voltages to ground, connect the clip to an unpainted surface of the chassis frame. 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.

Caution: For safety, periodically check the resistance value of the antistatic strap, which should be between 1 and 10 M.

SmartStack STS16-20D/STS16-20R Token Ring Switches Installation and User Guide

Preparing for Installation

Page 56
Image 56
Cabletron Systems STS16-20D, STS16-20R manual Preventing Electrostatic Discharge Damage