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例1故障机型:HUSTON牌TP103-2型电话机故障现象:耳机中听不到对方送话音。分析检修:该机是上海皓盛电子有限公司生产的小型床头式电话机,整机结构为抽匣式,其主机电路板与所有按键均装在抽匣内,此时该话机处于待机状态,如果有外线铃流信号时,可在听到振铃声后将主机拉出匣外进行正常通话。当发生以上所述的故障时,可打开机壳对其进行检查,经查后发现外匣上的耳机听筒与主机板上的二根引线已经断掉,所以无法听到对方
Example 1 fault model: HUSTON brand TP103-2 phone Fault phenomenon: the headset can not hear each other to send voice. Analysis and maintenance: This machine is Shanghai Hao Sheng Electronics Co., Ltd. production of small bedside telephone, machine structure for the draw-cartridge type, the host circuit board and all buttons are installed in the drawer, this time the phone is in standby mode , If there is an external ring signal, you can hear the ring after the host pulled out of the box for normal calls. When the above fault occurs, you can open the case to check it, found that the outer casing on the headset and the two leads on the motherboard has been broken, so I can not hear each other