Lucent Technologies Lineage
®
2000 400A, 60Hz Ferroresonant Rectifier J85503C-3
Issue 10 July 2000
Spare Parts and Replacement Procedures 8 - 3
packs in these classes are handled in the same manner, regardless of
sensitivity. Factory packaging provides shielding in the rare instances
when it is necessary.
• 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 rectifier. Otherwise, open all circuit packs at a
static-safe work position with wrist straps and dissipative table mats.
• Upon removal from the rectifier, 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.
• Do not wax the equipment aisles in central offices.
• Whenever possible, maintain relative humidity above the 20-percent
level.
