Nautel XL12, Technical Instructions

Page: 191 / 238

12 000 WATT AM BROADCAST TRANSMITTER
XL12
Page 9-2
01 January 2002
NOTE
The physical location of a part/assembly was not
necessarily a factor when a schematic was
drawn. The full reference designation assigned
to a part/ assembly, in conjunction with the family
tree in figure 8-1 and the assembly detail
drawings in section 10, will identify its location.
9.8.1
Figure SD-1 identifies the major functional
blocks and their detailed interconnection. Figures
SD-2 thru SD-6 further expand the functional
breakdown of each block and contain cross
references that identify which block is the signal
source for inputs or the destination for outputs.
9.8.2
When a sub-function is treated as a block in
figures SD-2 thru SD-6, its detailed circuit
information will be included in its own schematic
drawing(s). These schematics may be included in
this section or in an appended service instruction
manual(s).
LOCATING A PART/ASSEMBLY IDENTIFIED
ON A SCHEMATIC
9.9
The full reference designation assigned to a
part/assembly is the key to physically locating that
part/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 codings that identify
assembly relationship (A1, A2A1, A2A1A1, etc)
are added
9.9.1
Enter the family tree depicted in figure 8-1
with the full reference designation and follow the
family tree branches to the appropriate block, noting
the name and Nautel nomenclature number of all
higher assemblies in the path.
NOTE
The drawings in section 10 depict the assembly
detail of the transmitter and any of its modules/
assemblies that are not the subject of their own
service instruction manual. If the block in the
family tree references a manual that is keyed to a
Nautel nomenclature number, the assembly detail
for that assembly will be included in the
referenced service instruction manual.
9.9.2
Enter table 10-1 with the name and Nautel
nomenclature number of each family tree block in
the path, starting at the highest assembly (normally
figure MD-1) and determine the figure number(s) for
that assembly. Refer to the referenced figure and
locate the next lower level assembly. Repeat this
procedure until the location of the required
part/assembly has been identified.
LOCATING THE SCHEMATIC DIAGRAM(S)
FOR A FUNCTIONAL BLOCK
9.10
The text inside a functional block, provides
the key to locating its schematic diagram(s).
9.10.1 WHEN FIGURE NUMBER
IDENTIFIED:
In some instances the figure
number of the schematic will be identified. These
schematics will be included in this section.
9.10.2 WHEN REFERENCE DESIGNATION
ASSIGNED TO BLOCK:
When a functional
block has been assigned a reference designation,
enter the family tree depicted in figure 8-1 and follow
the family tree branches to the block that contains
the reference designation.
9.10.2.1
If the family tree's block references
a service instruction manual that is keyed to a Nautel
nomenclature number, the schematic will be included
in the referenced manual.
9.10.2.2
If the family tree's block references
a table in section 8 of this manual, the schematic will
be in this section. Enter table 10-1 to with the Nautel
nomenclature number and/or the description to
identify the appropriate figure number(s).
9.10.3 TITLE OF BLOCK:
When a functional
block has not been assigned a reference designation
and a figure number has not been referenced, the
schematic is included in this section. Enter table 9-1
with the name of the functional block to identify the
appropriate figure number(s).