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meng mei pai yao kong xi tong gu zhang yi li
Author(s): 
Pages: 22
Year: Issue:  6
Journal: Family Electronics

Keyword:  系统故障全功能高电平继电器开关无光总开关微控制器故障现象短路继电器遥控系统;
Abstract: <正> 故障现象:一台加装了M9081C全功能总成的金星十四英寸彩电,无声无光。检修:该机有两个开关:总开关和单触点继电器开关。正常情况下,只要总开关闭合,微控制器M9081C的(28)脚就会输出一个高电平,使Q18、Q19导通,继电器得电吸合接通主
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