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2.行扫描电路关键测试点(1)行输出管V406的集电极电压:测量此电压,可以证明开关电源次级的+B电压是否正常。同时也能说明送到行管c极的工作电压是否有异常。正常时应为130V左右。
2. Line scan circuit key test points (1) Row output tube V406 collector voltage: measuring this voltage, you can prove that the second level of the switching power supply + B voltage is normal. At the same time, it can also indicate whether the working voltage sent to line C is abnormal. Normal should be about 130V.