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笔者曾经给爱华737、606和603组合音响改VCD所用的解压板是深圳产的ZNT—680B解压板,因以上三种机型的DSP芯片均为CX1167Q,其工作方式和静音处理都可按照680解压板附带的说明书进行改装,这里不再累述,笔者主要强调的有以下几点: 一、电源选择因以上三种机型CD机与主机是分离的,通过排线相连,因此从主机上接电源是不合适的。笔者对737机型从CD板的CN712插座的②脚取+12V电源直接接到解压板上,因为此电源在整机插头杆上时就有,所以VCD解压板与原机同步供电,而对636机型,笔者从DNE—1B1卡座板上的跨线(EM1607),上接+12V电压。二、信号线的连接音频的返送是改此CD机的重点和难点,对于737机型,笔者将D/A转换集成块的(12)、(14)脚挑起,把解压板上的左右声道线分别接至(12)、(14)脚所对应的线路板
I have to Aihua 737,606 and 603 combination of sound to change VCD decompression board is produced in Shenzhen ZNT-680B decompression board, because the above three models of DSP chips are CX1167Q, its working methods and mute processing can be in accordance with 680 decompression board attached to the instructions to be modified, no longer tired here, I mainly emphasize the following points: First, the power of choice Because the above three models of CD and the host is separate, connected through the cable, so from the host On the power is not suitable. The author of the 737 models from the CN712 socket CD pin board take +12 V power directly to the decompression board, because the power when there is the whole machine plug rod, so VCD decompression board with the original synchronous power supply, and 636 models, the author from DNE-1B1 card board across the line (EM1607), on the +12 V voltage. Second, the signal line connection Audio return is to change the focus and difficulty of this CD machine, for the 737 models, I will D / A converter block (12), (14) feet provoked the decompression board on the left and right Channel lines were connected to (12), (14) corresponding to the foot of the circuit board