Field Replaceable Units - Nortel Passport 15000 Hardware Description

Chapter 8

Field replaceable units

Passport 15000 or 20000 has hardware parts that are field replaceable units
(FRUs). The FRUs are uniquely identified by either a product engineering
code (PEC) or a part number. Part numbers from a non-Nortel Networks
manufacturer are indicated.
Service replaceable units (SRUs) are included in the lists as FRUs.
The PECs or part numbers that are shared by Passport 15000 or 20000 or are
unique to either Passport are listed together in tables under the same
replacement groups. Since this chapter assumes you are replacing a part with
the same kind of part, and each part has a unique identification number, parts
for either a Passport 15000 or 20000 are listed together. An individual part
that is unique to a Passport 15000 or 20000 is identified.
Note: Procedures throughout this document referred to part numbers of
hardware that can only be ordered through a parts kit. If the part number
or the name of a part is not listed in this chapter, and you need to replace
it, contact your Nortel Networks sales representative to identify the kit
that contains the replacement part.
Any backplane cannot be changed in the field because of the difficulty to
change it or the downtime to key portions or the whole system. To replace a
backplane, for example, because of bent pins, the hardware assembly they are
part of must be replaced. Hardware assemblies with backplanes include the
BIP, cooling unit, fabric, or shelf.
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