论文部分内容阅读
例1机型:东芝2929DH型彩电故障现象:彩电场幅压缩,屏幕中部出现一条水平亮带(约占满屏的1/3),并且上部伸长、下部压缩,而伴音正常。分析与检修:该机电路新颖,采用了图像几何失真校正电路—TA8859P集成电路,采用I2C总线控制技术,行、场振荡免调试,行、场的参数要通过I2C总线进行调整,因此该机未设置场线性、场幅可调元件。于是将TA8859P作为重点检查,把其外围元件逐一检查,
Example 1 Model: Toshiba 2929DH-type TV Fault phenomenon: TV field amplitude compression, the screen appears a horizontal bright band (about full screen 1/3), and the upper elongation, the lower compression, and the sound is normal. Analysis and Overhaul: The machine novel circuit, using the image geometric distortion correction circuit-TA8859P integrated circuit, the use of I2C bus control technology, line, field oscillation-free debugging, line, field parameters to be adjusted through the I2C bus, so the aircraft is not Set the field linear, field adjustable components. So TA8859P as a key inspection, the external components one by one inspection,