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新型远距离无绳电话机,实际上是在黑珍珠739型无绳电话机基础上,将分离元件组成的导频控制电路及其他控制电路,用一块微处理器集中实现而已,改进后的机型体积小,功能多,手机也更加美观。目前,市场上出现的多种远距离无绳电话机其电路设计、元器件标号,除个别集成电路型号不同(功能相同)外,几乎完全相同。由于这些产品均属仿制,所以故障率较高,笔者近期检修了几种不同型号的新型远距离无绳电话机,其内部电路其本完全相同,而且故障点也基本相
The new long-distance cordless telephone, in fact, is based on the Black Pearl 739 cordless telephone, the pilot components of the pilot control circuit and other components, with a microprocessor to achieve centralized, improved model size Small, multi-function, the phone is more beautiful. At present, there are many kinds of long-distance cordless phones on the market whose circuit design and component marking are almost the same except for the different integrated circuit models (the same function). Since these products are generic, so the failure rate is high, I recently overhaul several different types of new long-range cordless phones, the internal circuit it is exactly the same, and the point of failure is also the basic phase