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西門子PLC1516控制器開機面板不亮修理電話
西(xi)門(men)(men)(men)子(zi)(zi)CPU1516開機無顯(xian)示維修(xiu)(xiu)(xiu)(xiu),西(xi)門(men)(men)(men)子(zi)(zi)CPU1516上(shang)(shang)電(dian)屏幕黑屏維修(xiu)(xiu)(xiu)(xiu),西(xi)門(men)(men)(men)子(zi)(zi)CPU1516開機面板黑屏不(bu)亮(liang)維修(xiu)(xiu)(xiu)(xiu),西(xi)門(men)(men)(men)子(zi)(zi)CPU1516上(shang)(shang)電(dian)黑屏維修(xiu)(xiu)(xiu)(xiu),西(xi)門(men)(men)(men)子(zi)(zi)CPU1516啟動(dong)面板不(bu)亮(liang)維修(xiu)(xiu)(xiu)(xiu),西(xi)門(men)(men)(men)子(zi)(zi)CPU1516上(shang)(shang)電(dian)無顯(xian)示維修(xiu)(xiu)(xiu)(xiu),西(xi)門(men)(men)(men)子(zi)(zi)CPU1516上(shang)(shang)電(dian)屏幕不(bu)亮(liang)維修(xiu)(xiu)(xiu)(xiu),西(xi)門(men)(men)(men)子(zi)(zi)CPU1516上(shang)(shang)電(dian)無反應維修(xiu)(xiu)(xiu)(xiu),西(xi)門(men)(men)(men)子(zi)(zi)CPU1516上(shang)(shang)電(dian)不(bu)啟動(dong)維修(xiu)(xiu)(xiu)(xiu),西(xi)門(men)(men)(men)子(zi)(zi)CPU1516接(jie)錯電(dian)燒壞維修(xiu)(xiu)(xiu)(xiu),西(xi)門(men)(men)(men)子(zi)(zi)CPU1516啟動(dong)亮(liang)紅(hong)燈維修(xiu)(xiu)(xiu)(xiu),西(xi)門(men)(men)(men)子(zi)(zi)CPU1516網口(kou)燈不(bu)亮(liang)維修(xiu)(xiu)(xiu)(xiu),西(xi)門(men)(men)(men)子(zi)(zi)CPU1516通訊(xun)連(lian)接(jie)不(bu)上(shang)(shang)維修(xiu)(xiu)(xiu)(xiu)
西門子觸摸屏維修SCD1900
故障現(xian)象:通電DC24V,屏幕無光,電流(liu)約230mA
修復過程(cheng):用手觸摸屏幕(mu),蜂鳴器有響應,說(shuo)明程(cheng)序(xu)運行正常(chang)。量高壓(ya)條(tiao)12VDC電(dian)壓(ya)正常(chang),控制電(dian)壓(ya) ENABLE低有效為低電(dian)平正常(chang)。說(shuo)明故障在(zai)高壓(ya)發(fa)生電(dian)路或燈管已(yi)(yi)經損壞(huai)。拆開發(fa)現燈管一頭(tou)已(yi)(yi)經發(fa)黑,更換(huan)燈管后仍(reng)然無(wu)光,檢查高壓(ya)變壓(ya)器也已(yi)(yi)損壞(huai)。維修更換(huan),接(jie)好(hao)線(xian)后固(gu)定,通電(dian)正常(chang),故障排除(chu)
二、西門(men)子(zi)觸摸屏維修TP270
西門子PLC1516控制器開機面板不亮修理電話故障現象:通電后屏幕無顯示,電流約100mA
修(xiu)復過(guo)程:用手觸(chu)摸屏幕,蜂鳴器(qi)無響應,說(shuo)明(ming)程序(xu)運行(xing)不正(zheng)(zheng)(zheng)常(chang)。萬用表測量幾(ji)組電壓3.3V、5.1V、 12V都正(zheng)(zheng)(zheng)常(chang)。據用戶反映(ying),用戶發現(xian)觸(chu)摸屏故障后曾試圖維修(xiu),在通(tong)電的過(guo)程中,出現(xian)過(guo)一(yi)次(ci)正(zheng)(zheng)(zheng)常(chang)的情況,但斷電后再次(ci)通(tong)電就不行(xing)了(le)。分析芯片(pian)(pian)某個腳(jiao)(jiao)位有(you)虛 焊,使得(de)總(zong)線(xian)錯誤,從而程序(xu)不能跑(pao)動。遂用熱(re)風(feng)槍對(dui)密腳(jiao)(jiao)芯片(pian)(pian)焊腳(jiao)(jiao)加熱(re),同(tong)時用鑷子按壓芯片(pian)(pian),使焊腳(jiao)(jiao)和錫重(zhong)新熔(rong)合。經過(guo)以上處理后,重(zhong)新開(kai)機,電流上升到 470mA,一(yi)切正(zheng)(zheng)(zheng)常(chang)。