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美多 CP6960调频调幅立体声收录机收音部分的最常见故障现象为无声,包括调频、调幅均无声,调频、短波有声而中波无声。CP6960机收音高频部分电路由三块集成电路及一些外围元件组成,第一块集成电路为 D7335P,它用于调频调谐器。第二块为 D7640 AP,它具有调频中放、鉴频、调幅变频、调幅中放、检波等功能。第三块集成电路为 D7343P。它是锁相环调频立体声多路解调集成电路。以上三块集成电路性能稳定可靠,在修理过程中发现损坏的比率极小,而一般收音部分的故障大都产生在外围电路中。当 CP6960机放音正常而收音无声时,可以首先检
The United States and more CP6960 FM AM Stereo Recorder radio part of the most common symptoms of silence, including FM, AM are silent, FM, short-wave sound and silence in the wave. CP6960 machine radio high frequency part of the circuit consists of three integrated circuits and some peripheral components, the first integrated circuit D7335P, which is used for FM tuner. The second for the D7640 AP, which has a FM radio, Kam, AM frequency conversion, amplitude modulation release, detection and other functions. The third integrated circuit is D7343P. It is a PLL FM stereo demodulator integrated circuit. The performance of the above three integrated circuits is stable and reliable, the rate of damage found in the repair process is extremely small, while most of the radio part of the fault mostly occurred in the peripheral circuits. When the CP6960 machine sound normal and the radio silent, you can first seized