大多数遥控彩电的本机键盘电路及由此而产生的很多故障现象、维修方法早已被同行们所熟知,但对于近几年来所流行的A6机芯的派生机,其本机键盘电路出现的一些奇特故障,往往使初遇此类者迷惑不解。分析和处理A6机芯键盘电路故障,沿用过去的电路概念及维修经验往往不灵,维修中很重要的一方面就是要注意重新认识A6键盘电路的特殊性。特殊之一,是控制原理不同。电路结构也不同。我们熟悉的大多数键盘控制电路,都采用行列矩阵式,控 Most of the local remote control color TV keyboard circuit and the resulting many fault phenomena, maintenance methods have long been known to peers, but for the popular A6 movement in recent years, derivative machine, the local keyboard circuit appears Some strange failures often confuse those who encounter such problems. Analysis and processing of A6 movement keyboard circuit failure, the use of the past circuit concepts and maintenance experience is often not working, maintenance is very important part is to pay attention to re-recognize the particularity of the A6 keyboard circuit. One of the special is the different control principles. Circuit structure is also different. Most of the keyboard control circuits we are familiar with are matrix matrix control