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四 VCD的解码板常见故障分析与检修 1.常用工具及检修办法在检修VCD机时,同样需要示波器、万用表、电烙铁、VCD机的维修手册、及各种常用改锥。在CL—480块中,它有128个引脚,那么怎样才能快速拆卸呢?笔者在近两年的维修实践中,摸索、整理厂一些办法供广大读者参考:<1>专业工具拆卸。它主要指的是集成电路起拨器,但因其价格贵,故在一般的维修部门不太使用;<2>刀切法。当判断为集成块损坏时,用锋利的小刀将其管脚切断,并清除已切断的管脚。但这种办法对经验不足的人不适用;<3>漆包线拆卸法。此法是利用粗细适当的漆包线从集成块的缝隙中穿过,固定一端之后用尖嘴35 W电烙铁焊1至2个管脚之后,再拉动漆包线与印制板分离,当拉动完所
Four VCD decoder board common fault analysis and maintenance 1. Common tools and maintenance methods VCD equipment in the repair, the same need oscilloscope, multimeter, electric iron, VCD machine repair manual, and a variety of commonly used screwdrivers. In the CL-480 block, it has 128 pins, then how can I quickly disassemble it? The author in the past two years of maintenance practice, explore, organize some of the ways for readers to reference: <1> professional tool disassembly. It mainly refers to the IC dial device, but because of its expensive, it is not used in the general maintenance department; <2> knife cut method. When it is determined that the manifold is damaged, use a sharp knife to cut off its pins and remove the severed pins. However, this approach does not apply to inexperienced people; <3> enameled wire dismantling method. This method is the use of appropriate thickness of the enameled wire through the gap from the manifold, after fixing one end with a sharp mouth 35 W soldering iron welding 1-2 pins, and then pull the enameled wire separated from the printed circuit board,