Protecting against electrostatic discharge – Cisco 4490 User Manual
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Cisco Global Site Selector 4490 Hardware Installation Guide
78-15755-02
Chapter 2 Preparing for Installation
Safety Guidelines
•
Position cables and power cords carefully; route cables and the power cord
and plug so that they cannot be stepped on or tripped over. Be sure that
nothing rests on your system components’ cables or power cord.
•
Do not modify power cables or plugs. Consult a licensed electrician or your
power company for site modifications. Always follow your local or national
wiring rules.
Protecting Against Electrostatic Discharge
Static electricity can harm delicate components inside the GSS 4490. Electrostatic
discharge (ESD) damage occurs when electronic cards or components are
mishandled and can result in complete or intermittent failures. To prevent static
damage, discharge static electricity from your body before you touch any of your
system’s electronic components. You can do so by touching an unpainted metal
surface on the chassis.
You can also take the following steps to prevent damage from ESD:
•
Always wear an ESD-preventive wrist or ankle strap when handling
electronic components. Connect one end of the strap to an ESD jack or an
unpainted metal component on the system (such as a captive installation
screw).
•
When unpacking a static-sensitive component from its shipping carton, do not
remove the component from the antistatic packing material until you are
ready to install the component in your system. Just before unwrapping the
antistatic packaging, be sure to discharge static electricity from your body.
Place the removed component on an antistatic surface or in a static shielding bag.
•
When transporting a sensitive component, first place it in an antistatic
container or packaging.
•
Handle all sensitive components in a static-safe area. If possible, use
antistatic floor pads and workbench pads.
•
Avoid contact between the cards and clothing. The wrist strap only protects
the card from ESD voltages on the body; ESD voltages on clothing can still
cause damage.