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常見電源故障 

作者: 日期:2020-05-09閱讀 0

常見電源故障 





 1.接(jie)(jie)(jie)通(tong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源,指示燈(deng)不(bu)(bu)亮,整(zheng)機(ji)(ji)無反應引起故障的(de)(de)原因有:  (1)停(ting)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian):保險絲熔(rong)斷;空氣開關跳閘;電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源插(cha)座(zuo)損(sun)壞(huai)。先對上述各項逐項進(jin)行檢(jian)查(cha),如果都(dou)正(zheng)常(chang),再檢(jian)查(cha)洗(xi)衣機(ji)(ji)。  值得一提(ti)的(de)(de)是(shi),檢(jian)查(cha)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源插(cha)座(zuo)是(shi)否有電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)時,大家都(dou)習慣用(yong)試電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)筆(bi)檢(jian)測(ce),氖燈(deng)發(fa)光就認(ren)為市電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)網電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源正(zheng)常(chang)。當用(yong)萬(wan)(wan)用(yong)表(biao)交流電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓擋檢(jian)測(ce)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)腦(nao)控(kong)制板220V輸入端(duan)無電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓顯示時,去測(ce)量(liang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源插(cha)座(zuo),結(jie)果無電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓顯示。于(yu)是(shi)拆開電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源插(cha)座(zuo),發(fa)現其銅(tong)片嚴重變(bian)形且被(bei)跳火氧化,零線(xian)接(jie)(jie)(jie)頭螺絲松動跳火變(bian)黑,產生(sheng)接(jie)(jie)(jie)觸不(bu)(bu)良。換(huan)上新(xin)的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源插(cha)座(zuo)即(ji)可,洗(xi)衣機(ji)(ji)無需修理。  (2)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源線(xian)插(cha)刃虛焊(han)或導(dao)線(xian)折斷(多發(fa)生(sheng)在(zai)三(san)腳插(cha)頭根部)導(dao)致電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源線(xian)不(bu)(bu)通(tong)。用(yong)萬(wan)(wan)用(yong)表(biao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻測(ce)檢(jian)測(ce),確定斷路(lu)后更換(huan)三(san)腳插(cha)頭或電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源線(xian)即(ji)可。  (3)直流電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)有故障。拆開洗(xi)衣機(ji)(ji)蓋板,卸下電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)腦(nao)板,檢(jian)測(ce)直流電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源變(bian)壓器(qi),整(zheng)流二級管、濾(lv)波(bo)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)、三(san)段穩壓器(qi)等,若(ruo)發(fa)現有損(sun)壞(huai)元器(qi)件,即(ji)可用(yong)相同規格型(xing)號的(de)(de)新(xin)件更換(huan)。  2.指示燈(deng)亮,洗(xi)衣機(ji)(ji)不(bu)(bu)能(neng)進(jin)入某種工作(zuo)狀(zhuang)態  接(jie)(jie)(jie)通(tong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源設定某種工作(zuo)狀(zhuang)態,若(ruo)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)動機(ji)(ji)、進(jin)水閥(fa)、排水閥(fa)三(san)個負(fu)載件都(dou)不(bu)(bu)能(neng)工作(zuo),說明(ming)控(kong)制負(fu)載件的(de)(de)幾(ji)(ji)個雙(shuang)向可控(kong)硅都(dou)沒有工作(zuo)。而幾(ji)(ji)個觸發(fa)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)同時損(sun)壞(huai)的(de)(de)可能(neng)性較(jiao)小(xiao),故障原因應該在(zai)觸發(fa)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)的(de)(de)公共部分,比(bi)如該電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)的(de)(de)+5V公共電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu),查(cha)找(zhao)到損(sun)壞(huai)件更換(huan)即(ji)可。