Figure 1-46.Combination displays.
Six-Step Troubleshooting Procedure
You may have the job of maintaining or helping to maintain some electrical or electronic unit,
subsystem, or system. Some of these jobs may be complex, but even a complex job can be broken down
into simple steps. Basically, any repair of electric or electronic equipment should be done in the following
1. Symptom recognition. This is the action of recognizing some disorder or malfunction in
2. Symptom elaboration. Obtaining a more detailed description of the trouble symptom is the
purpose of this step.
3. Listing probable faulty functions. This step is applicable to equipment that contains more than
one functional area or unit. From the information you have gathered, where could the trouble
logically be located?
4. Localizing the faulty function. In this step you determine which of the functional units of the
multiunit equipment is actually at fault.
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