Lucent Technologies J85568E-1, Product Manual

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Lucent Technologies J85568E-1 Secondary DC Mini-Distribution Bay
Issue 4 January 1999 Safety 4 - 5
Electrostatic
Discharge
(ESD)
– Assume all circuit packs containing electronic
(solid-state) components can be damaged by ESD.
– When handling circuit packs (storing, inserting,
removing, etc.) or when working on the backplane,
always use the appropriate grounding procedure:
either a wrist strap connected to ground or, when
standing, a heel strap with a grounded dissipative
floor mat.
– A grounded person must never hand an unprotected
circuit pack to an ungrounded person. A static
discharge from the ungrounded person through the
circuit pack to the grounded person could cause an
electrostatic discharge failure. All persons and
equipment at a work location must be at the same
common ground potential to be static safe.
– 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.
– Do not rub or wipe circuit packs to clean them
unless you and the circuit pack are at the same
ground potential.
– Observe warning labels on bags and cartons.
Whenever possible, do not remove circuit packs
from antistatic bags or cartons until ready to insert
into the equipment. Otherwise, open all circuit packs
at a static-safe work position with wrist straps and
dissipative table mats.
– Upon removal from the equipment, immediately put
circuit packs into antistatic packages. Always store
and transport circuit packs in antistatic packaging.
Shielding is not required unless specified.
– Keep all static-generating materials away from all
circuit packs. These materials include common
plastics such as food wrappers, clear plastic bags,
styrofoam containers, packing material, drinking
cups, notebooks, and nonconductive plastic solder
suckers. The insulation on small hand tools does not
represent a static hazard.
– Keep adhesive tape (Scotch, masking, etc.) away
from static-sensitive devices.
– When soldering static-sensitive semiconductor
devices, the soldering iron must be grounded to the
work table, which must also be earth grounded.
– Whenever possible, maintain relative humidity
above the 20-percent level.