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Chapter 2 Installation
Preparing for Installation
2-4
Cisco 837 Router and SOHO 97 Router Hardware Installation Guide
78-14781-02
Preventing Electrostatic Discharge Damage
Electrostatic discharge (ESD) is a transfer of electrostatic charge between bodies
of different electrostatic potentials, such as an operator and a piece of electrical
equipment. It occurs when electronic components are improperly handled, and it
can damage equipment and impair electrical circuitry. Electrostatic discharge is
more likely to occur with the combination of synthetic fibers and dry atmosphere.
Always use the following ESD-prevention procedures when removing and
replacing components:
Step 1 Wear an ESD-preventive wrist strap that you provide, ensuring that it makes good
skin contact.
Caution To properly guard against ESD damage and shocks, the wrist strap and cord must
operate effectively. Always observe the warnings in the “Warnings” section on
page 2-2.
Step 2 Do not touch any exposed contact pins or connector shells of interface ports that
do not have a cable attached. If cables are connected at one end only, do not touch
the exposed pins at the unconnected end of the cable.
Note This device is intended only for use in residential and commercial environments.
Caution Periodically check the resistance value of the antistatic strap, which should be
between 1 and 10 megohms (Mohms).
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