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更新時間(jian):2024-06-11
產品簡介:
品牌 | Siemens/西門子 | 產地 | 進口 |
---|---|---|---|
加工定制 | 是 |
西門子MP277觸摸屏啟動開不了機-維修專家;
如果(guo)查(cha)找開不了(le)機(ji)的(de)故障時,先(xian)用萬用表(biao)測量5v電(dian)(dian)壓(ya)(ya),如果(guo)沒有5v電(dian)(dian)壓(ya)(ya)或者5v電(dian)(dian)壓(ya)(ya)變得很(hen)低,那么一種(zhong)可能是電(dian)(dian)源(yuan)電(dian)(dian)路(lu)輸入(ru)級(ji)出(chu)現了(le)問(wen)題(ti),也就是說(shuo)12v轉換到5v的(de)電(dian)(dian)源(yuan)部分(fen)出(chu)了(le)問(wen)題(ti),這種(zhong)故障很(hen)常(chang)見,檢(jian)查(cha)5端穩壓(ya)(ya)塊。
遇到5v電壓(ya)恢(hui)復正常后還不(bu)能正常開(kai)機的,這種(zhong)情況也(ye)有多種(zhong)原(yuan)因(yin),一方面(mian)是(shi)mcu的程序被(bei)沖掉可能會導致不(bu)開(kai)機,還有就是(shi)mcu本身損(sun)壞,比如(ru)說(shuo)mcu的i/o口損(sun)壞,使(shi)mcu掃描不(bu)了(le)(le)按鍵,遇到這種(zhong)由mcu引起(qi)的故障,找硬件(jian)的問(wen)題是(shi)沒有用(yong)的,就算你換(huan)了(le)(le)mcu也(ye)解(jie)決不(bu)了(le)(le)問(wen)題,因(yin)為(wei)mcu是(shi)需要(yao)編(bian)程和寫碼的,在沒辦(ban)法找到原(yuan)廠的ad驅動板(ban)替換(huan)的情況下,我們只能用(yong)通用(yong)a/d驅動板(ban)代換(huan)如(ru):151d或161b等。
三、另一種可能就是5v的負(fu)載加(jia)重了,把5v電(dian)壓拉得(de)很(hen)低,就是說后級(ji)的信號(hao)處理(li)電(dian)路出(chu)了問(wen)題,有部分電(dian)路損壞(huai),引起負(fu)載加(jia)重。把5v電(dian)壓拉得(de)很(hen)低,逐一排查后級(ji)出(chu)現(xian)(xian)問(wen)題的元件(jian),替換掉出(chu)現(xian)(xian)故(gu)(gu)障的元件(jian)后,5v能恢復(fu)正(zheng)常,故(gu)(gu)障一般(ban)就此(ci)解決。
西門子MP277觸摸屏啟動開不了機-維修專家;
西門子(zi)觸(chu)摸(mo)(mo)(mo)(mo)屏(ping)(ping)(ping)維(wei)(wei)(wei)修(xiu)(xiu)(xiu)(xiu)(xiu)(xiu)常見故(gu)(gu)障(zhang):觸(chu)摸(mo)(mo)(mo)(mo)屏(ping)(ping)(ping)上電(dian)無(wu)(wu)反(fan)應,上電(dian)燒(shao)保險, 上電(dian)藍屏(ping)(ping)(ping),通(tong)(tong)電(dian)幾分鐘(zhong)后屏(ping)(ping)(ping)幕(mu)變(bian)為藍屏(ping)(ping)(ping),主(zhu)板故(gu)(gu)障(zhang),屏(ping)(ping)(ping)幕(mu)偏黑 ,通(tong)(tong)訊(xun)(xun)時(shi)有(you)(you)時(shi)無(wu)(wu), 觸(chu)摸(mo)(mo)(mo)(mo)失靈(ling),有(you)(you)時(shi)白屏(ping)(ping)(ping),觸(chu)摸(mo)(mo)(mo)(mo)面板故(gu)(gu)障(zhang) ,黑屏(ping)(ping)(ping),死(si)屏(ping)(ping)(ping),電(dian)源故(gu)(gu)障(zhang), 液(ye)晶(jing)(jing)故(gu)(gu)障(zhang),觸(chu)摸(mo)(mo)(mo)(mo)面板損壞(huai) ,觸(chu)控正常但主(zhu)板程序(xu)無(wu)(wu)反(fan)應 ,觸(chu)摸(mo)(mo)(mo)(mo)不(bu)(bu)(bu)(bu)(bu)良,觸(chu)摸(mo)(mo)(mo)(mo)失靈(ling);操(cao)作靈(ling)敏度不(bu)(bu)(bu)(bu)(bu)夠 ,上電(dian)無(wu)(wu)任何顯(xian)(xian)示(shi) , PWR燈不(bu)(bu)(bu)(bu)(bu)亮(liang)但其他(ta)一切正常,雙串口(kou)無(wu)(wu)法通(tong)(tong)訊(xun)(xun) ,主(zhu)板松動 ,485串口(kou)通(tong)(tong)訊(xun)(xun)不(bu)(bu)(bu)(bu)(bu)良,觸(chu)摸(mo)(mo)(mo)(mo)屏(ping)(ping)(ping)上電(dian)無(wu)(wu)反(fan)應,通(tong)(tong)訊(xun)(xun)不(bu)(bu)(bu)(bu)(bu)良,畫面不(bu)(bu)(bu)(bu)(bu)能切換, 觸(chu)摸(mo)(mo)(mo)(mo)死(si)機(ji)(ji)等(deng)西門子(zi)各(ge)型號屏(ping)(ping)(ping)無(wu)(wu)顯(xian)(xian)示(shi)維(wei)(wei)(wei)修(xiu)(xiu)(xiu)(xiu)(xiu)(xiu),亮(liang)度看(kan)不(bu)(bu)(bu)(bu)(bu)清楚(chu)維(wei)(wei)(wei)修(xiu)(xiu)(xiu)(xiu)(xiu)(xiu),黑屏(ping)(ping)(ping)維(wei)(wei)(wei)修(xiu)(xiu)(xiu)(xiu)(xiu)(xiu),花(hua)屏(ping)(ping)(ping)維(wei)(wei)(wei)修(xiu)(xiu)(xiu)(xiu)(xiu)(xiu),白屏(ping)(ping)(ping)維(wei)(wei)(wei)修(xiu)(xiu)(xiu)(xiu)(xiu)(xiu),液(ye)晶(jing)(jing)屏(ping)(ping)(ping)顯(xian)(xian)示(shi)豎條(tiao)維(wei)(wei)(wei)修(xiu)(xiu)(xiu)(xiu)(xiu)(xiu),液(ye)晶(jing)(jing)屏(ping)(ping)(ping)顯(xian)(xian)示(shi)橫條(tiao)維(wei)(wei)(wei)修(xiu)(xiu)(xiu)(xiu)(xiu)(xiu),液(ye)晶(jing)(jing)屏(ping)(ping)(ping)顯(xian)(xian)示(shi)多畫面維(wei)(wei)(wei)修(xiu)(xiu)(xiu)(xiu)(xiu)(xiu),以及液(ye)晶(jing)(jing)屏(ping)(ping)(ping)顯(xian)(xian)示(shi)疑難(nan)雜癥均可維(wei)(wei)(wei)修(xiu)(xiu)(xiu)(xiu)(xiu)(xiu),觸(chu)摸(mo)(mo)(mo)(mo)屏(ping)(ping)(ping)通(tong)(tong)訊(xun)(xun)不(bu)(bu)(bu)(bu)(bu)上維(wei)(wei)(wei)修(xiu)(xiu)(xiu)(xiu)(xiu)(xiu),觸(chu)摸(mo)(mo)(mo)(mo)屏(ping)(ping)(ping)開機(ji)(ji)走一半不(bu)(bu)(bu)(bu)(bu)動維(wei)(wei)(wei)修(xiu)(xiu)(xiu)(xiu)(xiu)(xiu),開機(ji)(ji)不(bu)(bu)(bu)(bu)(bu)能進入(ru)程序(xu)維(wei)(wei)(wei)修(xiu)(xiu)(xiu)(xiu)(xiu)(xiu),指示(shi)燈不(bu)(bu)(bu)(bu)(bu)亮(liang)維(wei)(wei)(wei)修(xiu)(xiu)(xiu)(xiu)(xiu)(xiu),觸(chu)摸(mo)(mo)(mo)(mo)屏(ping)(ping)(ping)死(si)機(ji)(ji)維(wei)(wei)(wei)修(xiu)(xiu)(xiu)(xiu)(xiu)(xiu)