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7.TA8659(TA8759)全制式解码电路徒弟:请师傅介绍TA8659(TA8759)全制式彩色解码电路引脚功能、电压数据及无彩色故障检修方法好吗? 师傅:TA8659(TA8759)是一块具有全制式彩色解码和数字分频式行、场扫描功能的大规模集成电路,广泛应用于东芝系列大屏幕彩电和国产国际线路大、中屏幕彩电。其内部电路由解码电路(包括亮度通道、色度通道、基色矩阵、彩色制式识别、转换和用于终端监视或图文显示的扩展接口以及基色信号输出等电路)和扫描电路(包括同步分离、行、场振荡、高压保护、锯齿波形成以及50/60Hz识别等电路)两大部分组成,现以金星C7411大屏幕彩电为例,TA8659全制式解码电路引脚功能及电压值(接收PAL制信号)如表7所示。
7.TA8659 (TA8759) full-format decoder circuit apprentice: Please master introduced TA8659 (TA8759) Full-mode color decoder circuit pin function, voltage data and achromatic troubleshooting methods? Master: TA8659 (TA8759) Color decoding and digital divider line, field scan function of large scale integrated circuits, widely used in Toshiba series of large-screen color TV and domestic international circuit, the screen color TV. The internal circuit consists of decoding circuit (including brightness channel, chroma channel, primary color matrix, color system identification, conversion and expansion interface for terminal monitoring or graphic display and primary color signal output circuit) and scanning circuit (including synchronous separation, Line, field oscillation, high voltage protection, sawtooth waveforms and 50 / 60Hz identification circuit) is composed of two parts, now taking Venus C7411 large screen color TV as an example, TA8659 full system decoder circuit pin function and voltage value (receiving PAL signal ) As shown in Table 7.