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电源Ｅ4Ｇ的代换 :开机后图像处理机 (ＳＭＩ)立即断电。调节ＳＭＩ柜内Ｄ3 组件中的Ｓ1旋扭 ,发现- 5 2Ｖ电压消失 ,初判电源Ｅ4Ｇ 故障。拆下Ｅ4Ｇ 的正负输出端 ,测输入端Ｄ5、Ｄ6有 2 2 0Ｖ电压 ,而输出端无 - 5 2Ｖ电压 ,显然电源Ｅ4Ｇ 损坏。根据Ｅ4Ｇ 各参数的要求 ,选
Substitution of the power supply E4G: The image processor (SMI) immediately shuts off after power-on. Adjust the S1 knob in the D3 component of the SMI cabinet and find that the -2V voltage disappears and the initial power supply E4G is faulty. Remove the positive and negative output terminals of E4G. Measure input terminals D5 and D6 have 220V voltage, and there is no -52V output voltage, apparently the power supply E4G is damaged. According to the requirements of E4G parameters, select