Nautel NX50, Руководство по устранению неисправностей

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NX50 Troubleshooting Manual Reading Electrical Schematics
Page 4-4 Issue 6.0 2019-04-01
Locating a part or assembly on a schematic
The full reference designation assigned to a part or assembly is the key to physically locating
that part or assembly.
1. Refer to the family trees in Section 2, “Parts Lists” on page 2-1 .
2. Follow the family tree branches to the block that contains the desired reference
designation, while noting the Nautel nomenclatures and names of all higher assemblies
in the path. Example:
A15 NAP39A RF Power Module > A15A1 NAPA34A Modulator/
Power Amplifier PWB
.
3. Refer to Table 5.1 in Section 5, “Mechanical Drawings” on page 5-1 . Use the Nautel
nomenclature and name of each family tree block in the path, starting at the highest
assembly – this is normally Figure
MD-1
– to determine the figure number(s) for that
assembly.
Example:
NAPA34A Modulator/Power Amplifier PWB
is shown on
MD-16
.
4. Refer to the referenced figure (e.g.,
MD-16
) in Section 5.1, “List of Mechanical
Drawings” on page 5-2 to locate the desired part or assembly.
Note: Full reference designations contain the assembly hierarchical coding. When the
end item is divided into units (cabinets), the first coding is a unit number (1, 2, 3,
etc.). When the end item is divided into assemblies, the first coding is an assembly
number (A1, A2, A3, etc.). If a unit or an assembly is divided into sub-assemblies,
assembly coding that identifies assembly relationship (1A1, A2A1, A2A1A1, etc.) is
added.
Note: The drawings in the
Mechanical Drawings
section depict the assembly detail
of the transmitter and its modules and assemblies.