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大家知道,一个技术上符合要求的光栅,是呈现高质量画面的前提。也就是说,图像的某些故障其实质是光栅的某些缺陷所致,即行场扫描电路、聚焦电路、会聚电路及变频电路(IPQ电路)工作不正常所引起。因此,当背投机的一次电源工作正常后,应接着排除光栅方面的故障。当然,二次电源电?
As we all know, a technically compliant grating is the prerequisite for a high quality picture. In other words, some of the image fault is essentially caused by some defects of the grating, that is, the field scan circuit, the focusing circuit, the convergence circuit and the inverter circuit (IPQ circuit) work abnormally. Therefore, when the back projector for a normal power supply should be followed by the elimination of the grating failure. Of course, the secondary power supply?