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Usually troubleshooting is applied to something that has suddenly stopped working, so the first focus, or concentration of Attention , should be on what has changed. However, care must be used to not jump to false conclusions of Causality — Correlation does not always mean cause. A basic principle in troubleshooting is to start from the simplest and most to always check the simple things first before calling for help. Further steps in troubleshooting are to check each Component in a System one by one, and to substitute known good components for any suspect ones. A Cognitive Walkthrough is also a good thing to try. Comprehensive Documentation produced by proficient Technical Writer s is very helpful, especially if it provides a Theory Of Operation for the subject device or system. A common cause of problems is bad Design , for example bad Human Factors design, where a device could be inserted backward or upside down due to the lack of an appropriate forcing function ( Behavior-shaping Constraint ), or a lack of Error-tolerant design. This is especially bad if accompanied by Banner Blindness , where the user just doesn't notice the incorrect usage. SEE ALSO |
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