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About This Document
xlviii Issue 1 December 1997
The following precautions should be observed when handling circuit packs in
order to prevent damage by ESD:
■ Assume all circuit packs contain solid state electronic components that can
be damaged by ESD. Use only Lucent Technologies’ manufactured
recognized circuit packs in this system. Recognized circuit packs are listed
in this user/service manual.
■ When handling circuit packs (storing, inserting, removing, etc.) or when
working on the backplane, always wear a grounded wrist strap or wear a
heel strap and stand on a grounded, static-dissipating floor mat. If a static-
dissipating floor mat is used, be sure that it is clean.
■ Handle all circuit packs by the faceplate or latch and by the top and bottom
outermost edges. Never touch the components, conductors, or connector
pins.
■ Observe warning labels on bags and cartons. Whenever possible, do not
remove circuit packs from antistatic packaging until ready to insert them
into slots.
■ If possible, open all circuit packs at a static-safe work position using
properly grounded wrist straps and static-dissipating table mats. If a static-
dissipating table mat is used, be sure that it is clean.
■ Always store and transport circuit packs in static-safe packaging. Shielding
is not required unless specified.
■ Keep all static-generating materials, such as food wrappers, plastics, and
Styrofoam
*
containers, away from all circuit packs. Upon removal from the
bay, immediately put circuit packs into static-safe packages.
■ Whenever possible, maintain relative humidity above 20 percent.
* Registered trademark of The Dow Chemical Company.
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