Bay Networks Baystream 7 Guide de l'utilisateur Page 131

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BOM Structures
PCN Process User Guide (301945-A)
Parts and Part Numbers: E-9
When a new artwork spin is released and previous revs can be reworked to be
functionally equivalent to the new spin.
Custom Parts (Cables, Sheet Metal, Fabs, Labels, etc.)
A minor rev is needed if there are description changes or there are changes to
drawings or documentation that do not affect the purchased part.
Custom Parts (Manuals and Software)
A minor rev is needed if the part reports to an order number and is forward- and
backward-compatible.
Purchased Components (ICs, Resistors, Caps, etc.)
Purchased components are not subject to minor revs.
BOM Structures
The following table displays the reporting relations for BOMs. When a product or
project is
structured
, all its components and subassemblies fit into a tree of
reporting or parent relationships. Products at Bay Networks follow certain rules
that determine how these components are contained within others.
The numbers shown in Table E-4, Table E-5, and Table E-6 are the class codes for
the various parts of the reporting structure that have been defined.
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