Esd Prevention - H3C VG 21-08 Installation Manual

Installation Manual
H3C VG 21-08 Voice Gateway

2.1.3 ESD Prevention

Although VG 21-08 is designed to be Electrostatic Discharge
(ESD) preventive, excessive static electricity may enormously
damage the card circuits or even the whole device.
Static electricity affecting the VG 21-08 and the related network
mainly comes from outdoor high-pressure power cables and electric
fields caused by thunder and lightning as well as indoor environment
and materials. To prevent damage, observe the following:
Ensure the unit and the floor is connected to earth ground.
Keep the equipment room clean.
Maintain suitable temperature and humidity.
Wear an ESD-preventive wrist strap and uniform when
handling the circuit board.
Place the removed circuit board on an ESD-preventive
workbench or in an antistatic bag right-side up.
Hold the removed circuit board only by its edge when
observing or moving it. Do not touch the components on it.
Warning:
There is an anti-dismantle seal on a screw on the chassis. You must
keep the seal intact before your sales representative maintains your
VG 21-08. Huawei-3Com is not liable for any damage or consequence
resulted from users' operation without permission.
Chapter 2 Installation Preparations
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