DVD解码板电路常见故障分析  

Common Fault Analysis of DVD Decoder Board Circuit

作　　者：张艳萍 Zhang Yanping(Hainan Technician College, Haikou Hainan, 571100, China)

机构地区：[1]海南省技师学院,海南海口571100

出　　处：《科技资讯》2017年第8期54-56,共3页Science & Technology Information

摘　　要：解码板电路主要由解码电路、音频信号处理电路和视频编码电路组成。解码板电路的常见故障现象有:图像和声音均无;有图像、无声音;有声音、无图像;有声音和图像,但无彩色等。该文就自己从事的职业教育与维修实践的亲身体会,以金正N800A型DVD为例,依据声、图互锁原理就由解码板电路造成的常见故障进行了分析判断。The decoder circuit is mainly composed of a decoding circuit,an audio signal processing circuit and video encoding circuit.Common faults are:no image and no sound;image,no sound;sound,no image;sound and image,but no color.This article based on my personal experience of the occupation education and maintenance practice,with Nintaus N800A DVD as an example,on the basis of sound figure interlocking principle,common faults caused by decoding circuit board is analyzed and evaluated.

关 键 词：解码板电路 声图互锁 故障分析 

分 类 号：TN94[电子电信—信号与信息处理]