论文部分内容阅读
故障现象:故障出现时图像上部拉长,并出现不规则的回扫线,左边密,右边稀。分析检修:从故障现象看属于场线性不良。又因出现不规则的回扫线,判断场扫描部分异常。测场输出管V310、V301及外围元件均正常,调场幅电位器RP303,场幅有变化,但仍有回扫线。该机场输出系利用泵电源产生回扫期间所需要的高压,在场扫描正程前半期,行输出变压器T414
Symptom: When the fault occurs, the upper part of the image is elongated, and an irregular retraction line appears. The left side is dense and the right side is thin. Analysis and maintenance: From the fault phenomenon is linear field show bad. Due to the emergence of irregular flyback line, to determine the field scanning part of the exception. Measurement output tube V310, V301 and peripheral components are normal, adjustable amplitude potentiometer RP303, field amplitude changes, but there are still flyback lines. The airport output is generated by the pump power supply during the flyback required high pressure, the first half of the field scanning process, the line output transformer T414