Nautel VX150, Troubleshooting Manual, Page: 140 / 182

VX150 TO VX2 TROUBLESHOOTING MANUAL ELECTRICAL SCHEMATICS
PAGE 3.4.4 VERSION 2.0 2023-04-20
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.
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.
1. Refer to the family trees in Parts Information on page 3.2.1 .
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: A2
NAPI187A System Interface PWB.
NOTE
:
The drawings in the Mechanical Drawings section depict the assembly detail of the transmitter
and its modules and assemblies.
3. Refer to Table 3.5.1 in Mechanical Drawings on page 3.5.1 . 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: NAPI187A System Interface
PWB is shown on MD-4.
4. Refer to the referenced figure (e.g., MD-4) in Mechanical Drawings on page 3.5.1 to locate the
desired part or assembly.