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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,市场上出现了多种远距离无绳电话机,除个别集成电路型号不同(功能相同)外,其电路设计、元器件标号几乎完全相同。笔者近期检修了几种不同型号的新型远距离无绳电话机,其故障现象多是手机摘机不能启动主机,现介绍其基本检修方法。
The new long-distance cordless telephone, in fact, is based on the Black Pearl 739 cordless telephone set, the pilot control circuit composed of separate components and other control circuits, using a microprocessor to achieve it. Improved model is small, multi-function, mobile phone is more beautiful. At present, there are many kinds of long-distance cordless phones on the market. Apart from the different types of ICs (the same functions), the circuit design and the component numbers are almost the same. Recently, the author overhaul several different types of new long-range cordless phones, the failure phenomenon is mostly mobile phone off the hook can not start the host, are introduced to its basic maintenance methods.