Harris Constellation, Installation And Maintenance Manual

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Constellation™ 2002 June 20
E-2
12-digit Part Number
For a 12-digit part number on the bill of materials:
SD Part Number
For an SD part number marked on the equipment:
The part number on the replacement unit must have the same base digits and
option number as the one you removed; however, the model number can be
higher.
For example, a failed unit with no Model indication in its part number is an
“M1” model. It can be replaced by an “M2” Model. Or, a unit with “M2” in its
part number can be replaced by an “M3” model. Units cannot be replaced with
ones that have lower model numbers. Refer to the original equipment list to
find the correct replacement parts for the specific unit.
Prefix
The first three digits of the part number indicate the type of unit or
level of assembly.
Model
The third digit of the part number is the unit or assembly model
number.
Base
The 6-digit base number is a consecutive numerical set indicates a
specific unit or assembly
Suffix
The 3-digit suffix indicates the unit or assembly option. For example,
003 indicates unit or assembly is Option 3.
X X X - X X X X X X - X X X
Prefix
Base Suffix Model
Designation The designation is always “SD”.
Base The 6-digit base number indicates a specific unit or assembly.
Suffix
The 3-digit suffix indicates the unit or assembly option. For
example, 003 indicates unit or assembly is Option 3.
Model The model number indicates the unit or assembly model number.
S D - X X X X X X - X X X - M X
Designation Base Model* Suffix
*Not shown for Model 1