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误机故障现象是,图像暗且模糊。分析判断为聚焦不良造成的。对聚焦部分着重检查。发现串接在高压25kV的聚焦供电电阻(170MΩ)的电阻破裂。此电阻、阻值功率较大、难于代换。所以经几个修理人员检修,都因直观的故障现象而断定该电阻损坏。而无件可换,被闲置了一年多。后来转到我店,经我分析。认为该电阻的外壳是塑封材料。电阻在工作中会发热,时间长了,处在几百几
Malfunction machine failure phenomenon is that the image is dark and fuzzy. Analysis judged to be caused by poor focus. Focus on the part of the inspection. It was found that the resistance of a series connected high-voltage 25kV focusing supply resistance (170MΩ) was broken. This resistance, resistance power larger, difficult to replace. Therefore, repair by several repair personnel, are due to visual failure phenomenon concluded that the resistance damage. And no changeable, was idle for more than a year. Then go to my shop, after my analysis. That the resistance of the shell is a plastic material. Resistance in the work will be fever, a long time, at a few hundred