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故障现象:索尼SPP—55型无绳电话机,手机不能开启主机。按通话(TALK)键,座机线路占用指示灯(LINE)不亮,手机上TALK/BATT LOW指示灯闪亮,约十几秒钟手机连续响四声“嘀嘀”后自动关机,但座机电源指示灯亮。分析与检修:该机的各项功能全部由手机来操作完成。座机上没有拨号、呼叫等功能,只有电源、占线、充电三个指示灯。座机的主要任务是:(1)把外线送来的振铃、话音信号进行调制处理后向手机转发。手机收到主机发送的铃流信号后,手
Symptom: Sony SPP-55 cordless phones, mobile phones can not open the host. Press the TALK button, the line of the landline is off, the TALK / BATT LOW indicator on the handset is flashing, and the phone will turn off automatically after “beep” for about ten seconds, but the power of the landline Light is on Analysis and Maintenance: All the features of the machine to complete the operation by the phone. Landline did not dial, call and other functions, only the power, busy, charging three lights. The main task of landline is: (1) the ring sent outside, modulation of voice signals to the phone after forwarding. After the handset receives the ringing signal sent by the host, hand