Juniper Networks EX4200 - Manual (Page 263)

or foam packing material or if you move components across plastic or carpets.
Observe the following guidelines to minimize the potential for electrostatic discharge
(ESD) damage, which can cause intermittent or complete component failures:
■ Always use an ESD grounding strap when you are handling components that are
subject to ESD damage, and make sure that it is in direct contact with your skin.
If a grounding strap is not available, hold the component in its antistatic bag (see
Figure 76 on page 237) in one hand and touch the exposed, bare metal of the
switch with the other hand immediately before inserting the component into
the switch.
WARNING: For safety, periodically check the resistance value of the ESD strap. The
measurement must be in the range of 1 through 10 Mohms.
■ When handling any component that is subject to ESD damage and that is removed
from the chassis, make sure the equipment end of your ESD strap is attached
to the ESD point on the chassis.
If no grounding strap is available, touch the exposed, bare metal of the switch
to ground yourself before handling the component.
■ Avoid contact between the component that is subject to ESD damage and your
clothing. ESD voltages emitted from clothing can damage components.
■ When removing or installing a component that is subject to ESD damage, always
place it component-side up on an antistatic surface, in an antistatic card rack,
or in an antistatic bag (see Figure 76 on page 237). If you are returning a
component, place it in an antistatic bag before packing it.
Figure 76: Place a Component into an Antistatic Bag
CAUTION: ANSI/TIA/EIA-568 cables such as category 5e and category 6 can get
electrostatically charged. In order to dissipate this charge, always ground the cables
to a suitable and safe earth ground before connecting them to the system.
Prevention of Electrostatic Discharge Damage on EX Series Switches ■ 237
Chapter 20: Power and Electrical Safety Information