常見電源故障　

　1.接(jie)通(tong)電(dian)(dian)(dian)(dian)源(yuan)，指示(shi)(shi)燈(deng)(deng)不(bu)亮，整機(ji)無(wu)(wu)反(fan)應引起故障(zhang)(zhang)的(de)原因(yin)有：　　(1)停電(dian)(dian)(dian)(dian)：保險絲(si)熔斷(duan)(duan)；空(kong)氣(qi)開關(guan)跳閘；電(dian)(dian)(dian)(dian)源(yuan)插座(zuo)損(sun)(sun)壞(huai)(huai)。先(xian)對上述各(ge)項(xiang)逐項(xiang)進行檢(jian)(jian)查(cha)(cha)，如(ru)果(guo)都(dou)正(zheng)常，再(zai)檢(jian)(jian)查(cha)(cha)洗衣(yi)機(ji)。　　值得一提的(de)是，檢(jian)(jian)查(cha)(cha)電(dian)(dian)(dian)(dian)源(yuan)插座(zuo)是否(fou)有電(dian)(dian)(dian)(dian)時(shi)，大(da)家都(dou)習慣用(yong)(yong)試電(dian)(dian)(dian)(dian)筆檢(jian)(jian)測，氖燈(deng)(deng)發(fa)光(guang)就認為市電(dian)(dian)(dian)(dian)網電(dian)(dian)(dian)(dian)源(yuan)正(zheng)常。當用(yong)(yong)萬用(yong)(yong)表(biao)(biao)交流(liu)電(dian)(dian)(dian)(dian)壓(ya)擋(dang)檢(jian)(jian)測電(dian)(dian)(dian)(dian)腦控制(zhi)板(ban)220V輸(shu)入端無(wu)(wu)電(dian)(dian)(dian)(dian)壓(ya)顯示(shi)(shi)時(shi)，去測量(liang)電(dian)(dian)(dian)(dian)源(yuan)插座(zuo)，結果(guo)無(wu)(wu)電(dian)(dian)(dian)(dian)壓(ya)顯示(shi)(shi)。于是拆開電(dian)(dian)(dian)(dian)源(yuan)插座(zuo)，發(fa)現其銅片嚴重變形且被(bei)跳火氧化，零線(xian)(xian)接(jie)頭(tou)螺絲(si)松動跳火變黑，產生接(jie)觸(chu)不(bu)良。換上新(xin)的(de)電(dian)(dian)(dian)(dian)源(yuan)插座(zuo)即(ji)(ji)可(ke)(ke)，洗衣(yi)機(ji)無(wu)(wu)需修理。　　(2)電(dian)(dian)(dian)(dian)源(yuan)線(xian)(xian)插刃(ren)虛(xu)焊或(huo)導線(xian)(xian)折斷(duan)(duan)(多(duo)發(fa)生在三(san)腳(jiao)插頭(tou)根(gen)部)導致(zhi)電(dian)(dian)(dian)(dian)源(yuan)線(xian)(xian)不(bu)通(tong)。用(yong)(yong)萬用(yong)(yong)表(biao)(biao)電(dian)(dian)(dian)(dian)阻(zu)測檢(jian)(jian)測，確定斷(duan)(duan)路后更(geng)(geng)換三(san)腳(jiao)插頭(tou)或(huo)電(dian)(dian)(dian)(dian)源(yuan)線(xian)(xian)即(ji)(ji)可(ke)(ke)。　　(3)直(zhi)流(liu)電(dian)(dian)(dian)(dian)源(yuan)電(dian)(dian)(dian)(dian)路有故障(zhang)(zhang)。拆開洗衣(yi)機(ji)蓋(gai)板(ban)，卸下(xia)電(dian)(dian)(dian)(dian)腦板(ban)，檢(jian)(jian)測直(zhi)流(liu)電(dian)(dian)(dian)(dian)源(yuan)的(de)電(dian)(dian)(dian)(dian)源(yuan)變壓(ya)器，整流(liu)二(er)級管(guan)、濾波電(dian)(dian)(dian)(dian)容、三(san)段穩(wen)壓(ya)器等，若發(fa)現有損(sun)(sun)壞(huai)(huai)元器件(jian)，即(ji)(ji)可(ke)(ke)用(yong)(yong)相同(tong)規格型號的(de)新(xin)件(jian)更(geng)(geng)換。　　2.指示(shi)(shi)燈(deng)(deng)亮，洗衣(yi)機(ji)不(bu)能進入某種工(gong)(gong)作(zuo)狀(zhuang)(zhuang)態　　接(jie)通(tong)電(dian)(dian)(dian)(dian)源(yuan)設定某種工(gong)(gong)作(zuo)狀(zhuang)(zhuang)態，若電(dian)(dian)(dian)(dian)動機(ji)、進水閥(fa)、排水閥(fa)三(san)個(ge)(ge)負載件(jian)都(dou)不(bu)能工(gong)(gong)作(zuo)，說(shuo)明控制(zhi)負載件(jian)的(de)幾個(ge)(ge)雙向可(ke)(ke)控硅都(dou)沒有工(gong)(gong)作(zuo)。而幾個(ge)(ge)觸(chu)發(fa)電(dian)(dian)(dian)(dian)路同(tong)時(shi)損(sun)(sun)壞(huai)(huai)的(de)可(ke)(ke)能性較小，故障(zhang)(zhang)原因(yin)應該在觸(chu)發(fa)電(dian)(dian)(dian)(dian)路的(de)公(gong)共部分，比(bi)如(ru)該電(dian)(dian)(dian)(dian)路的(de)+5V公(gong)共電(dian)(dian)(dian)(dian)源(yuan)電(dian)(dian)(dian)(dian)路，查(cha)(cha)找到損(sun)(sun)壞(huai)(huai)件(jian)更(geng)(geng)換即(ji)(ji)可(ke)(ke)。