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2.检修方法(1)无5V供电故障检修方法,图14是其检修思路。(2)无数字5V供电故障的检修方法,图15是其检修电路。
2. Maintenance methods (1) No 5V power supply troubleshooting methods, Figure 14 is its maintenance ideas. (2) No digital 5V power supply troubleshooting methods, Figure 15 is the overhaul circuit.