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Static measurement: Let the board be suspended during a close-up mode, consistent with the logical principle of the circuit or chip output and input relationship between the utilization multimeter measuring the relevant points to research and judge the explanation for troubles. Dynamic Measurement and Analysis of Law: the preparation of particular procedures or artificial assertion normal conditions, the machine is running, measured with the oscilloscope to watch the waveform components, and compared with the traditional waveform so as to work out fault location. because the control logic on the motherboard increasingly integrated, so its logical correctness, has become very difficult to work out by measuring. Recommend that you purely first determine the connection between the logic chip and an easy resistance-capacitance components, then focused on the logical relationship failure is tough to work out the large-scale microcircuit chips.

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