西門子840D系統XP主機壞黑屏維修中心，致(zhi)力于(yu)做上(shang)海(hai)的(de)西(xi)門子840D數控系統維(wei)(wei)修企(qi)業，及時(shi)為客戶提供高(gao)品質的(de)維(wei)(wei)修服務(wu)和。

西門子840D系統XP主機壞黑屏維修中心，打開(kai)pcu50機(ji)(ji)殼，通電(dian)(dian)(dian)測(ce)試各組電(dian)(dian)(dian)源，電(dian)(dian)(dian)壓都正(zheng)(zheng)常(chang)，PG信號輸出OK。測(ce)試時鐘電(dian)(dian)(dian)路(lu)，波(bo)(bo)形輸出都正(zheng)(zheng)常(chang),手(shou)摸(mo)南(nan)橋(qiao)(qiao)芯(xin)片(pian)溫(wen)度(du)正(zheng)(zheng)常(chang)，南(nan)橋(qiao)(qiao)cmos電(dian)(dian)(dian)路(lu)時鐘波(bo)(bo)形正(zheng)(zheng)常(chang)，測(ce)試南(nan)橋(qiao)(qiao)芯(xin)片(pian)對地阻抗，沒有(you)(you)(you)發(fa)(fa)現(xian)短路(lu)，此時根(gen)(gen)據(ju)以(yi)上檢測(ce)情況，基本判定南(nan)橋(qiao)(qiao)芯(xin)片(pian)工(gong)作正(zheng)(zheng)常(chang)。為了快速判斷問題(ti)，替換cpu芯(xin)片(pian)與(yu)內存條后(hou)故障依舊。然后(hou)仔(zi)細觀(guan)察主(zhu)板線(xian)(xian)路(lu)沒有(you)(you)(you)發(fa)(fa)現(xian)漏電(dian)(dian)(dian)短路(lu)斷路(lu)現(xian)象(xiang).用(yong)示波(bo)(bo)器(qi)測(ce)試內存條與(yu)北(bei)(bei)橋(qiao)(qiao)之(zhi)間相連(lian)的地址(zhi)線(xian)(xian)與(yu)數(shu)據(ju)線(xian)(xian)波(bo)(bo)形與(yu)電(dian)(dian)(dian)壓情況,發(fa)(fa)現(xian)只(zhi)有(you)(you)(you)開(kai)機(ji)(ji)瞬間有(you)(you)(you)資料運行，手(shou)摸(mo)北(bei)(bei)橋(qiao)(qiao)芯(xin)片(pian)溫(wen)度(du)比較(jiao)高，用(yong)萬用(yong)表測(ce)量北(bei)(bei)橋(qiao)(qiao)相連(lian)引腳電(dian)(dian)(dian)壓，發(fa)(fa)現(xian)有(you)(you)(you)幾根(gen)(gen)地址(zhi)線(xian)(xian)電(dian)(dian)(dian)壓不(bu)穩定，根(gen)(gen)據(ju)經驗懷疑(yi)北(bei)(bei)橋(qiao)(qiao)芯(xin)片(pian)不(bu)良。更換北(bei)(bei)橋(qiao)(qiao)芯(xin)片(pian)，然后(hou)測(ce)試pcu50連(lian)續(xu)工(gong)作正(zheng)(zheng)常(chang)。

，其他故障維修范圍：黑屏,白屏,花屏,死機(ji),開不(bu)(bu)(bu)了(le)(le)機(ji)，進不(bu)(bu)(bu)去系(xi)統，啟(qi)動(dong)卡死不(bu)(bu)(bu)動(dong)進不(bu)(bu)(bu)了(le)(le)主界面(mian)，顯示(shi)豎條,通訊(xun)連不(bu)(bu)(bu)上,無背(bei)光,系(xi)統不(bu)(bu)(bu)斷(duan)重啟(qi),面(mian)板顯示(shi)驅動(dong)未就緒,報(bao)編(bian)碼(ma)器故障,程序(xu)走一半,電源亮紅燈,西門子(zi)伺(si)服(fu)電機(ji)抖動(dong),不(bu)(bu)(bu)能帶負載，系(xi)統報(bao)警，伺(si)服(fu)故障，控制(zhi)模塊亮紅燈，機(ji)床不(bu)(bu)(bu)能正常運行維修。

，服務流程：

1.客戶根據故障來電尋求技術部幫助，工程師認為，故障可由客戶自行解決的，我們將提供免費解決方案；不能自行解決的，客戶可送變頻器，或快遞設備到迪昊公司
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