Lucent Technologies SLC ConnectReach User & Service Manual page 22

About This Information Product (IP)
Product Safety
Electrostatic Discharge (ESD)
Considerations
Considerations to
avoid ESD damage
xviii Issue 4 June 2002
CAUTION:
Industry experience has shown that all integrated circuit packs can be
damaged by static electricity that builds up on work surfaces and
personnel. The static charges are produced by various charging effects of
movement and contact with other objects. Dry air allows greater static
charges to accumulate. Higher potentials are measured in areas with low
relative humidity, but potentials high enough to cause damage can occur
anywhere.
The following list of precautions should be observed when handling circuit packs
to prevent damage by electrostatic discharge.
Assume all circuit packs contain solid state electronic components that
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can be damaged by ESD.
When handling circuit packs (storing, inserting, removing, etc.) or when
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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 to ensure a
good discharge path.
Handle all circuit packs by the faceplate or latch and by the top and
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bottom outermost edges. Never touch the components, conductors, or
connector pins.
Observe warning labels on bags and cartons. Whenever possible, do not
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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
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properly grounded wrist straps and static-dissipating table mats. If a
static-dissipating table mat is used, be sure that it is clean to ensure a
good discharge path.
Always store and transport circuit packs in static-safe packaging.
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Shielding is not required unless specified.
Keep all static-generating materials such as food wrappers, plastics, and
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foam packaging away from all circuit packs. On removal from the bay,
immediately put circuit packs into static-safe packages.
Whenever possible, maintain relative humidity above 20 percent.
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363-208-050