Nautel XR12 Troubleshooting Manual

Also see for XR12: Installation manual Operation and maintenance manual Preinstallation manual

Contents

XR12 Troubleshooting Manual Reading Electrical SchematicsPage 5-4 Issue 3.0 2009-07-28Locating a part or assembly on a schematicThe full reference designation assigned to a part or assembly is the key to physically locating that partor assembly.Refer to the family trees in Section 3, “Parts Lists” on page 3-1 with the full reference designation andfollow the family tree branches to the appropriate block, noting the name and Nautel nomenclaturenumber of all higher assemblies in the path.Refer to Table 4.1 with the name and Nautel nomenclature number of each family tree block in thepath, starting at the highest assembly (normally Figure MD-1). Determine the figure number for thatassembly. Refer to the referenced figure and locate the next lower-level assembly. Repeat thisprocedure until the desired part or assembly is found.Note: Full reference designations contain the assembly hierarchical coding. When theend 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 assemblynumber (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.) isadded.Note: The drawings in Section 6, “Mechanical Drawings” on page 6-1 depict theassembly detail of the transmitter and its modules and assemblies.Note: Mechanical drawings for some assemblies may consist of more than one figure.