Diagnosis of Malfunctions in Complex Electronic Assemblies. Final Report. Page: 18 of 66
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SCOPE AND PURPOSE
The purpose of this project was to define and develop methods to assure
rapid, accurate, and economical isolation of faults in complex electronic
assemblies being manufactured on the production line.
Principal areas of concern were:
" Determination of diagnostician skill level requirements, considering both
adequacy and economy;
" Improvement of diagnostic procedures and process techniques;
" Determination of tester requirements for diagnostic work; and
" Determination of a suitable and effective means for communicating
engineering information on product function, diagnostic techniques, and
other engineering support functions to the individuals who perform the
This report is an extension and compilation of previous quarterly reports
on the project and contains the essential information from those reports. A
process for detecting short circuits in printed circuit boards with liquid
crystals was reported individually in earlier reports.
Preliminary Considerations and Assumptions
The two fundamental considerations in any fault-isolation problem are the
accuracy. of diagnosis and the time required to reach a diagnostic conclusion.
Troubleshooter skill level, the sophistication of analytical equipment, and
the typical degree of engineering support will, in general, determine the
efficiency of a given troubleshooting effort.
Operator skill tends to be inversely related to equipment sophistication and
to detail in operating instructions. If one considers the extreme end.of this
continuum he finds, on the one end, engineers doing the troubleshooting with
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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/m1/18/: accessed March 25, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.