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song xia tc-21l3rq xing cai dian dian yuan gu zhang jian xiu shi li
Author(s): 
Pages: 37
Year: Issue:  9
Journal: Family Electronics

Keyword:  故障现象 分析检修 待机 遥控器 工作状态 信号强度 电源故障 主开关 开机 检修实例;
Abstract: <正> 例1.故障现象:接通电源主开关后,该机不是先进入"待机"状态,而是直接进入工作状态,且遥控关机失灵。分析检修:用遥控器反复进行"开机/待机"操作,仔细观察画面的变化情况。当由"开机"状态转为"待机"状态时,电视信号强度有减弱的迹象,而且切换频道功能失灵;由"待机"状态转为"开机"状态时,先出
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