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电话机故障有两种:一是机内元件损坏;二是使用长久、机内灰尘较多成接触不良。对于第一种故障必须根据电话机原理由专业人员修理;对于第二种故障自己可动手修理。例1 机型:HA—13型电话机故障现象:个别按键失灵,受话正常。分析检修:拆开话机,取出按键,发现导电胶上灰尘较多,用无水酒精洗清凉干,故障排除。例2 机型:HA238(Ⅲ)P/TDL电话机故障现象:故障同上。分析检修:拆开话机,发现和按键相对应的电路板
Phone failure in two ways: First, damage to the machine components; Second, the use of long, more dust into the machine into bad contact. For the first fault must be based on the principle of telephone repair by professionals; for the second fault yourself can repair. Example 1 Model: HA-13-type phone Fault phenomenon: a few buttons failure, normal speech. Analysis and maintenance: open the phone, remove the button and found more conductive plastic dust, wash with anhydrous alcohol dry, troubleshooting. Example 2 Model: HA238 (Ⅲ) P / TDL Telephone Symptom: Trouble Same as above. Analysis and maintenance: open the phone and found the key board and the corresponding circuit board