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本文对 CP6960便携式调频调幅收录音机在使用中出现的常见故障和修理方法作一较完整的叙述。本机拆装方便,只要卸下机壳后盖上的螺钉,面板即可卸下,机芯及印刷线路板一目了然。整机方框图和电路图分别如图1和图2所示。公用通道部分本机从音调、音量电位器到功放级为公用通道部分。音调控制采用简单衰减式,2W_2为音调电位器。功放采用 D7240AP 集成电路(2JC_2)作两路 OTL 功率放大,交流电源输出12伏左右,直流电源为9伏。D7240AP 具有高保真度、高输出、低失真及低噪声的
This article CP6960 portable FM AM receiver in the use of common failures and repair methods for a more complete description. This machine is easy to disassemble, just remove the screws on the back cover, the panel can be removed, movement and printed circuit board at a glance. The whole block diagram and circuit diagram are shown in Figure 1 and Figure 2 respectively. Common channel part of the machine from the tone, volume potentiometer to the amplifier section for the public channel section. Tone control using a simple attenuation, 2W_2 for the pitch potentiometer. Amplifier D7240AP integrated circuit (2JC_2) for two OTL power amplifier, AC power output of about 12 volts, DC power supply is 9 volts. The D7240AP features high fidelity, high output, low distortion and low noise