1730–Series Maintenance
6–4
The procedural information that appears as General Troubleshooting Techniques
should be familiar to most technicians; however, a quick review may save some
time and reduce “wheel spinning.”
The foldout pages at the back of the manual contain information that is useful in
troubleshooting the instrument. Block and schematic diagrams, circuit board
illustrations, and parts locating charts are found there.
Diagrams.
Schematic diagrams are the most often used troubleshooting aids.
The circuit number and electrical value of each component is shown on the
diagram. The first tabbed page has definitions of the symbology used on the
schematic diagrams. Refer to the Replaceable Electrical Parts list for a complete
description of each component. Circuits that are mounted on circuit boards or
assemblies are enclosed in a border, with the name and assembly number shown
on the border.
NOTE. Change Information:
Circuit Board Illustrations. Electrical components, connectors, and test points
are identified on circuit board illustrations, which are located on the page facing
the first schematic diagram for that board. Circuit board illustrations are
assigned location grids along the left side and top, which are used with the parts
locating charts to rapidly locate the components.
Parts Locating Charts.
The parts locating charts are used in conjunction with
the location grids on the board illustrations and on the schematics. There is one
locator chart that shows all of the parts on the board. This locator chart shows
which schematic the part is shown on, in addition to the board and schematic
grid locations for that part. In addition, there are locator charts facing each
schematic page that gives the board and schematic grid locations lists for only
the parts depicted on that schematic page.
Assembly and Circuit Numbering.
The circuit board assemblies are assigned
assembly numbers. Figure. 6-1 shows the circuit board assembly locations for
this instrument.
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