西門子MP277液晶屏顯示豎條和橫條維修檢測

觸(chu)(chu)(chu)摸(mo)屏(ping)(ping)上電(dian)(dian)無(wu)(wu)反應(ying)(ying)維(wei)(wei)(wei)修(xiu)(xiu)(xiu)(xiu)(xiu)(xiu)，上電(dian)(dian)燒保險維(wei)(wei)(wei)修(xiu)(xiu)(xiu)(xiu)(xiu)(xiu)， 上電(dian)(dian)藍(lan)屏(ping)(ping)維(wei)(wei)(wei)修(xiu)(xiu)(xiu)(xiu)(xiu)(xiu)，通(tong)電(dian)(dian)幾分(fen)鐘后屏(ping)(ping)幕(mu)(mu)變為(wei)藍(lan)屏(ping)(ping)維(wei)(wei)(wei)修(xiu)(xiu)(xiu)(xiu)(xiu)(xiu)，主板(ban)(ban)故(gu)(gu)(gu)障(zhang)維(wei)(wei)(wei)修(xiu)(xiu)(xiu)(xiu)(xiu)(xiu)，屏(ping)(ping)幕(mu)(mu)偏黑維(wei)(wei)(wei)修(xiu)(xiu)(xiu)(xiu)(xiu)(xiu) ，通(tong)訊(xun)時有時無(wu)(wu)維(wei)(wei)(wei)修(xiu)(xiu)(xiu)(xiu)(xiu)(xiu)， 觸(chu)(chu)(chu)摸(mo)失靈維(wei)(wei)(wei)修(xiu)(xiu)(xiu)(xiu)(xiu)(xiu)，有時白(bai)屏(ping)(ping)維(wei)(wei)(wei)修(xiu)(xiu)(xiu)(xiu)(xiu)(xiu)，觸(chu)(chu)(chu)摸(mo)面(mian)板(ban)(ban)故(gu)(gu)(gu)障(zhang)維(wei)(wei)(wei)修(xiu)(xiu)(xiu)(xiu)(xiu)(xiu) ，黑屏(ping)(ping)，死(si)屏(ping)(ping)，電(dian)(dian)源(yuan)故(gu)(gu)(gu)障(zhang)， 液晶(jing)故(gu)(gu)(gu)障(zhang)，觸(chu)(chu)(chu)摸(mo)面(mian)板(ban)(ban)損(sun)(sun)壞 ，觸(chu)(chu)(chu)控正常但(dan)主板(ban)(ban)程序無(wu)(wu)反應(ying)(ying) ，觸(chu)(chu)(chu)摸(mo)不(bu)(bu)(bu)(bu)(bu)良(liang)，觸(chu)(chu)(chu)摸(mo)失靈；操作靈敏(min)度不(bu)(bu)(bu)(bu)(bu)夠 ，上電(dian)(dian)無(wu)(wu)任何(he)顯(xian)示 ， PWR燈不(bu)(bu)(bu)(bu)(bu)亮但(dan)其他一切正常，雙串(chuan)(chuan)口無(wu)(wu)法通(tong)訊(xun) ，主板(ban)(ban)松動(dong) ，485串(chuan)(chuan)口通(tong)訊(xun)不(bu)(bu)(bu)(bu)(bu)良(liang)，觸(chu)(chu)(chu)摸(mo)屏(ping)(ping)上電(dian)(dian)無(wu)(wu)反應(ying)(ying)，通(tong)訊(xun)不(bu)(bu)(bu)(bu)(bu)良(liang)，畫(hua)面(mian)不(bu)(bu)(bu)(bu)(bu)能(neng)切換， 觸(chu)(chu)(chu)摸(mo)死(si)機等故(gu)(gu)(gu)障(zhang)。按鍵損(sun)(sun)壞、電(dian)(dian)源(yuan)板(ban)(ban)故(gu)(gu)(gu)障(zhang)、高(gao)壓板(ban)(ban)故(gu)(gu)(gu)障(zhang)、液晶(jing)故(gu)(gu)(gu)障(zhang)、主板(ban)(ban)壞,上電(dian)(dian)黑屏(ping)(ping)、 花(hua)屏(ping)(ping)、藍(lan)屏(ping)(ping)、白(bai)屏(ping)(ping)，上電(dian)(dian)無(wu)(wu)反應(ying)(ying)、上電(dian)(dian)燒保險，不(bu)(bu)(bu)(bu)(bu)能(neng)正常開機、進入不(bu)(bu)(bu)(bu)(bu)了系統、觸(chu)(chu)(chu)摸(mo)問題、按鍵問題、內容錯亂(luan)，觸(chu)(chu)(chu)摸(mo)無(wu)(wu)反應(ying)(ying)、觸(chu)(chu)(chu)摸(mo)反應(ying)(ying)慢、 觸(chu)(chu)(chu)摸(mo)死(si)機、觸(chu)(chu)(chu)摸(mo)偏差，無(wu)(wu)背光、背光暗、PWR燈不(bu)(bu)(bu)(bu)(bu)亮、通(tong)訊(xun)失敗等故(gu)(gu)(gu)障(zhang)

西門子MP277液晶屏顯示豎條和橫條維修檢測

接近檢(jian)測(ce)(ce)通過專門設計的(de)(de)(de)IR LED實現。與(yu)IR LED相對應(ying)的(de)(de)(de)是(shi)光(guang)(guang)(guang)電二(er)(er)(er)極(ji)管(guan)(guan)，它一(yi)般用(yong)來檢(jian)測(ce)(ce)LED發出的(de)(de)(de)IR光(guang)(guang)(guang)。當IR LED和光(guang)(guang)(guang)電二(er)(er)(er)極(ji)管(guan)(guan)同(tong)方向放置時，光(guang)(guang)(guang)電二(er)(er)(er)極(ji)管(guan)(guan)將(jiang)(jiang)不會檢(jian)測(ce)(ce)到任何IR光(guang)(guang)(guang)，除非有物(wu)體在LED的(de)(de)(de)前面，將(jiang)(jiang)光(guang)(guang)(guang)反(fan)射(she)回光(guang)(guang)(guang)電二(er)(er)(er)極(ji)管(guan)(guan)。反(fan)射(she)回光(guang)(guang)(guang)電二(er)(er)(er)極(ji)管(guan)(guan)的(de)(de)(de)光(guang)(guang)(guang)強與(yu)物(wu)體到光(guang)(guang)(guang)電二(er)(er)(er)極(ji)管(guan)(guan)的(de)(de)(de)距離逆向相關。

單(dan)一(yi)LED和光電二極管(guan)相(xiang)結合可(ke)以(yi)(yi)檢(jian)測一(yi)些動作，例如可(ke)以(yi)(yi)檢(jian)測物體是否靠近(jin)或(huo)遠離光電二極管(guan)，這僅僅是一(yi)維空間(jian)檢(jian)測。假設一(yi)個系(xi)統，其布局如圖1所示(shi)。單(dan)一(yi)LED系(xi)統僅使用LED1與IR傳感器。