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1.漏气投影管漏气较严重时,管内会出现紫色打火放电现象,有时还能听到“劈啪”的响声较易鉴别。投影管漏气较轻时,特别是慢性漏气则较难判断,有时甚至被忽略。投影管慢性漏气时的表现是:电子束聚焦变差,导致图像变模糊;荧光屏发光变暗,导致图像对比度变差;有时出现回归线;射束电流增大,导致行扫描输出级负载加重(即“行管”工作电流增大)。对于前两种情况,通过调整I2C总线有关项目的设置数据,可在一定
1. Leakage projection tube leakage is more serious, the tube will appear purple spark discharge phenomenon, and sometimes can hear “crackle ” sound easier to identify. Projector tube leaks light, especially the chronic leak is more difficult to judge, and sometimes even ignored. The performance of chronic leakage of projection tube is as follows: the focus of the electron beam becomes worse and the image becomes blurred; the luminescence of the fluorescent screen becomes dark, which leads to the deterioration of the image contrast; the regression line sometimes appears; the beam current increases, That “line management ” working current increases). For the first two cases, by adjusting the I2C bus-related settings of the project data can be certain