After a technician tests a theory of probable causes, what two actions should the technician take if the testing did not identify an exact cause?
Establish a new theory of probable causes.
Document each test tried that did not correct the problem.
Test all remaining possible causes starting with the most complex.
Use a top-down approach to isolate the cause of the problem.
Randomly replace components one at a time until the problem is solved.
Answer:
Establish a new theory of probable causes.*
Document each test tried that did not correct the problem.*
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