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故障现象:此机接通电源,按下电源开关,整机无任何指示。故障检查:这类故障多为电源电路故障引起;电源不通或电源回路中器件损坏。打开机壳后,首先用万用表Ω×1档检测电源进线,保险器,及本机所特有的一个安全开关,均完好无损。直观检查也无断线或外表烧变质的元器件。再用Ω×10档检测电源变压器初级回路,阻值无穷大,为开路,初步判定为电源变压器初级开路(内部断线)
Symptom: This machine connected to the power, press the power switch, the whole without any instructions. Troubleshooting: This type of failure is mostly caused by a fault in the power circuit; power fails or the device in the power circuit is damaged. Open the case, the first multimeter Ω × 1 file detection power into the line, the fuse, and a unique security switch this machine are intact. Intuitive inspection without broken or appearance of deterioration of the components. And then use Ω × 10 files detection power transformer primary circuit, the resistance is infinite, is open, initially determined as the primary power transformer open circuit (internal disconnection)