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HW8889(3)型无绳电话机为多频道无绳电话机且为子母机结构,具有最后一组号码重拨、存储、主机手机之间内部通话等功能,主机可作为有线电话使用还具有半免提功能(即对外线,只能进行免提拨号、受话,不能进行免提送话)。现将手机电路常见故障及检修方法介绍如下。 故障现象 手机无铃声,其他功能正常。 分析检修 根据故障现象分析,引起该故障的
The HW8889 (3) cordless telephone is a multi-channel cordless telephone and features a daughterboard structure with functions such as last number redial, storage, intercom call between host phones, etc. The host can be used as a landline telephone with semi-handsfree Function (that is, outside line, only for hands-free dialing, receiving, can not be hands-free). Mobile phone circuit now common faults and maintenance methods are described below. Symptoms Mobile no ring, the other functions are normal. Analysis and Maintenance According to the failure phenomenon analysis, causing the failure