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fu ri hfc-2125 cai dian gu zhang jian xiu
Author(s): 
Pages: 57
Year: Issue:  3
Journal: Family Electronics

Keyword:  工作状态 开关电源 元件 故障检修 故障现象 分析检修 现象分析 判断故障 振荡电路 正反馈电路;
Abstract: <正> 故障现象:开机后光栅出现一闪一闪的“打嗝”现象,不能进入正常的工作状态,但速度不是很快。该机在几个月前就偶尔出现过开机时打一两下“嗝”的现象,而后情况逐渐严重,直至目前这种状态。分析检修:据故障现象分析,该故障可能是由于元件变质
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