论文部分内容阅读
3.伴音正常,无图像伴音正常、无图像的故障,应先检查集成电路视频输入端的(16)脚有无视频信号输入,简单的方法是把(16)脚接入监视器的视频端子,看有无图像,如有图像输入,引起故障的原因有:(1)集成电路(15)脚接地电阻R10开路;(2)射频输出电容C17失效;(3)集成电路内部的视频处理电路损坏。4.有图像,无伴音遇到这类故障,先要检查集成电路⑥脚有无音频信号输入,如有音频信号输入,检查集成电路②脚的接地电阻R11是否开路和伴音输出电容C12是否失
3. The normal sound, no picture sound normal, no image of the fault, you should first check the integrated circuit video input (16) feet video signal input, the simple method is to (16) access to the monitor’s video terminal feet, There are no images, if there is image input, the cause of the malfunction are: (1) integrated circuit (15) feet ground resistance R10 open circuit; (2) RF output capacitor C17 failure; (3) integrated circuit internal video processing circuit is damaged . 4. Have images, no sound encountered such failures, first check the IC ⑥ feet audio signal input, if audio signal input, check the integrated circuit ② foot grounding resistance R11 is open and the sound output capacitor C12 is lost