Nortel Passport 15000, Hardware Installation And Maintenance, Page: 59 / 874

Chapter 2 Safety considerations and best practices 59
Passport 15000, 20000 Hardware Installation, Maintenance, and Upgrade 5.2S2
mounting ear, and at the designated grounding points on the cabinet uprights.
Ensure that the grounding point is a bare, clean bond and that the ground
window is shared by the Passport to which the sparing panel is connected.
Avoiding damage from ESD
Electrostatic discharge (ESD) is a discharge of stored static electricity that
can damage equipment and impair electrical circuitry. ESD damage can cause
complete or intermittent failure of electronic components. The transfer of
ESD occurs when any hardware part is handled by a person who is not
protected from ESD. When the part has electronic components, it can be
damaged by the ESD transfer. When the part has no electronic components,
installing it into other hardware will transfer the ESD it carries to the ESD-
sensitive hardware that is already present.
Handling processor cables for a CP or an FP can also transfer ESD, even
when the cable itself is not electrically conductive. For example, connecting
a fiber optic cable to an FP faceplate connector or a small-form pluggable
(SFP) module can enable the ESD from yourself to transfer to the part you are
plugging into.
When handling any part of a Passport, including parts with or without
electronic components, at least wear a wrist strap (part number A0378999).
Nortel Networks recommends also using conductive carpet, conductive
shoes, and heel grounders in the room where the equipment is anchored.
See the figure “Location of ESD jacks, front lower (shown) or upper shelf”
(page 60).
CAUTION
Risk of equipment damage by ESD
Always ground yourself by an approved anti-ESD method
before and while handling any tools or hardware on or
near the switch. You can plug the provided wrist strap
(part number A0378999) into an anti-ESD jack on the
lower left mounting ear of either cooling unit (row of fans)
of a Passport 15000 or 20000.