25. State the best procedures for troubleshooting multiple malfunctions.
Answer for frame 25: Assume one trouble exists and find it first. Then
troubleshoot the remaining faults.
troubleshooting. Now you are ready to practice troubleshooting using these
principles. Use of these principles will enable you to approach the task of
troubleshooting a system in a sensible, logical manner. As you gain
experience with particular systems, you will find that the job becomes
easier, and you will work faster. The importance of the first few steps
cannot be overemphasized! NOTE ALL THE SYMPTOMS, LOCATE ALL THE ABNORMAL
SIGNAL PATHS, then ESTABLISH INITIAL BRACKETS. Begin checking within the
brackets, trying to eliminate half the remaining system each time.
Recognize the type of signal flow path involved and troubleshoot it
accordingly. Perform the general checks first, and then perform the
specific checks. Avoid irrelevant checks (outside the brackets), redundant
checks (checks you have done already), and premature checks (checks which
should be done later). One last point use your head! Don't become bound
by a method so much that you don't stop to think. These principles are
guides which will enable you to become a proficient troubleshooter on
complicated electronic systems, BUT the troubleshooting job is still up to