Diagnosis of Malfunctions in Complex Electronic Assemblies. Final Report. Page: 25 of 66
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Operator performance could be judged objectively by such factors as the 1
average time required for an individual to complete the troubleshooting
task versus his accuracy, by working in the factory with an individual
troubleshooter observing his techniques, and by evaluating his insight and
knowledge of circuit functions. Such factors as familiarity with a particular
equipment idiosyncrasy, dependence on fellow troubleshooters or engineers,
and dependence on repetitive type failures made the on-the-job observation
Experience. Experience or on-the-job training is necessary to develop and
become familiar with standard troubleshooting techniques and analytical
equipment. The operation and the application of standard analytical equip-
ment must be a second-nature function to the efficient troubleshooter. Thic
includes the many features of the various types of oscilloscopes and opera-
tion and application of RF and pulse generators, spectrum analyzers, and
counters. The repetitive study of similar problems and the execution of
certain techniques also tends to develop habits and confidence and expedite
diagnosis of certain problems. If theoretical knowledge is sufficiently strong
that all the details of the process are understood, performing the task edu-
cates the operator; but if fundamentals are weak, detail functions of the
circuit become vague, and limited educational benefit is realized from doing
the troubleshooting by process of elimination. Operators with extensive
experience and weaker technical backgrounds could troubleshoot many
routine failures, but they were weak in localizing unusual or first-encount-
Education. Education alone was not always an effective guide to determining
the technical knowledge of a troubleshooter. The wide range of standards
required by trade school, the length of time out of the school and the field,
and the efforts to keep abreast of the fast-moving technology were pertinent
factors that required consideration. Some operators with a minimum of
trade school training had superior abilities and had acquired sound technical
knowledge through extensive home study and by constantly working with
eugixieering and technical personnel.
Testing. A test oriented toward troubleshooting telemetry assemblies was
developed. The test was divided into categories of dc circuitry, basic logic
circuitry, pulse and transient circuitry, transiotors, IlF transmisiuxi lines,
identification of typical circuit stages, and detail functions of individual
telemetry circuits. The test complexity of each category was graduated from
the elementary to the more complex for the sake of evaluating each operator.
Since pulse and switching circuitry make up a large percentage of telemetry
circuitry, the test was designed to evaluate this area thoroughly. A close
correlation was found between test scores and operator performance. Some
correlation existed between education and experience and operator performance.
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Losure, J. A. Diagnosis of Malfunctions in Complex Electronic Assemblies. Final Report., report, January 1, 1971; Kansas City, Missouri. (https://digital.library.unt.edu/ark:/67531/metadc1031893/m1/25/: accessed March 25, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.