一、針式打印機打印原理是什么
針式打印機(ji)主要用(yong)(yong)于完成各項(xiang)單據的(de)復(fu)寫，為用(yong)(yong)戶提供(gong)高效(xiao)的(de)服務，它的(de)作用(yong)(yong)是(shi)噴墨打印技(ji)術和激光打印技(ji)術無法實現的(de)，那么(me)針式打印機(ji)的(de)原理是(shi)什么(me)呢(ni)？
針(zhen)式(shi)打(da)印機是壓(ya)感(gan)式(shi)打(da)針(zhen)，通過打(da)印頭(tou)中(zhong)的針(zhen)擊打(da)復寫紙，打(da)印時打(da)印針(zhen)頭(tou)彈出(chu)，將色帶(dai)(dai)顏色打(da)印到(dao)紙張上，打(da)印過程中(zhong)針(zhen)頭(tou)會一直(zhi)對紙張施加壓(ya)力，可以(yi)使多層的復寫紙打(da)印出(chu)同樣的效果，所以(yi)除了第(di)一張紙上的字跡(ji)來自于色帶(dai)(dai)的油墨外，下(xia)層紙張也會同時顯(xian)示出(chu)字跡(ji)，從而實現了多聯打(da)印。
二、針式打印機無法打印如何解決
針式打印(yin)(yin)機(ji)用來打印(yin)(yin)各種票據、多份聯打是(shi)很(hen)方便的，在(zai)使用針式打印(yin)(yin)機(ji)的時(shi)候，有時(shi)會(hui)遇到無法(fa)打印(yin)(yin)的問題(ti)，可能(neng)的故障原因有很(hen)多，一般是(shi)電路(lu)問題(ti)，可以采取(qu)以下方法(fa)排(pai)查故障并解決(jue)：
1、首先檢(jian)查電(dian)源電(dian)路板與(yu)主(zhu)板連(lian)線(xian)是否(fou)正確連(lian)接(jie)（連(lian)線(xian)是否(fou)插反(fan)或斜接(jie)或虛接(jie)），如(ru)果電(dian)源電(dian)路板與(yu)主(zhu)板連(lian)線(xian)接(jie)觸不良(liang)，重新插好連(lian)線(xian)。
2、如(ru)果(guo)電源(yuan)電路(lu)板(ban)與主(zhu)(zhu)板(ban)連(lian)線正常，接著檢(jian)查主(zhu)(zhu)板(ban)與控制(zhi)面板(ban)的連(lian)線是(shi)否正常，如(ru)果(guo)不正常，將連(lian)線重新連(lian)接好。
3、如(ru)果(guo)主(zhu)板與(yu)控制面板的連線正(zheng)常(chang)，接著檢查電源(yuan)(yuan)開(kai)關是(shi)否(fou)正(zheng)常(chang)，發現(xian)電源(yuan)(yuan)開(kai)關損壞，則更換(huan)電源(yuan)(yuan)開(kai)關。
4、如果電(dian)(dian)(dian)(dian)源(yuan)(yuan)開(kai)(kai)關(guan)正(zheng)常，接(jie)著斷開(kai)(kai)電(dian)(dian)(dian)(dian)源(yuan)(yuan)電(dian)(dian)(dian)(dian)路(lu)板(ban)(ban)(ban)與主板(ban)(ban)(ban)的連接(jie)，然后接(jie)入220V，用萬(wan)用表檢(jian)測電(dian)(dian)(dian)(dian)源(yuan)(yuan)電(dian)(dian)(dian)(dian)路(lu)板(ban)(ban)(ban)的直流輸(shu)出電(dian)(dian)(dian)(dian)壓是(shi)否正(zheng)常；如果電(dian)(dian)(dian)(dian)源(yuan)(yuan)電(dian)(dian)(dian)(dian)路(lu)板(ban)(ban)(ban)輸(shu)出電(dian)(dian)(dian)(dian)壓不正(zheng)常，則電(dian)(dian)(dian)(dian)源(yuan)(yuan)電(dian)(dian)(dian)(dian)路(lu)板(ban)(ban)(ban)損壞(huai)(huai)，檢(jian)查電(dian)(dian)(dian)(dian)源(yuan)(yuan)電(dian)(dian)(dian)(dian)路(lu)板(ban)(ban)(ban)開(kai)(kai)關(guan)是(shi)否損壞(huai)(huai)，如果損壞(huai)(huai)，更換電(dian)(dian)(dian)(dian)源(yuan)(yuan)電(dian)(dian)(dian)(dian)路(lu)板(ban)(ban)(ban)開(kai)(kai)關(guan)。
5、如果(guo)電(dian)(dian)(dian)源電(dian)(dian)(dian)路(lu)板(ban)(ban)開(kai)關正常，接著(zhu)檢(jian)測電(dian)(dian)(dian)源電(dian)(dian)(dian)路(lu)板(ban)(ban)中的初級(ji)電(dian)(dian)(dian)路(lu)的保(bao)險(xian)管F1是否熔(rong)斷。如果(guo)保(bao)險(xian)管F1熔(rong)斷，檢(jian)查電(dian)(dian)(dian)源電(dian)(dian)(dian)路(lu)板(ban)(ban)其余電(dian)(dian)(dian)路(lu)是否存在短路(lu)問題，如果(guo)沒有可以更(geng)換(huan)F1。
6、如果保險管正常，接著檢查電(dian)源電(dian)路(lu)板(ban)中的開(kai)關管、二極管、整流(liu)橋電(dian)路(lu)等是否正常，如果不正常，更換損壞(huai)的元器件或(huo)電(dian)源電(dian)路(lu)板(ban)。
7、如果第4步(bu)中測(ce)量的電(dian)源輸出電(dian)壓正(zheng)常，接著將電(dian)機連線(xian)、頭纜(lan)線(xian)、傳感器(qi)線(xian)從(cong)主板上(shang)撥下(xia)，只連電(dian)源電(dian)路板線(xian)及控(kong)(kong)制面(mian)(mian)板電(dian)纜(lan)線(xian)，然后(hou)接通電(dian)源，看(kan)控(kong)(kong)制面(mian)(mian)板的電(dian)源指示燈(deng)是否(fou)亮，如果控(kong)(kong)制面(mian)(mian)板電(dian)源指示燈(deng)顯示有(you)電(dian)，說明主板正(zheng)常，問題出在(zai)外圍電(dian)氣部件。
8、外圍電氣部件的檢查首先檢測字車電機和走紙電機是否燒毀，如果燒毀，更換損壞的電機；如果字車電機和走紙電機正常，接著檢查打印頭纜線是否正常（有無磨損、斷線等造成短路），如果不正常，更換打印頭線纜；如果打印頭線纜正常，接著將打印頭取下，然后加電，看打印機是否有顯示。如果針式打印機有電，說明打印(yin)(yin)頭內部有短(duan)路（打印(yin)(yin)頭線圈(quan)、針驅動(dong)管或芯片2B短(duan)路），更換短(duan)路的部件或更換打印(yin)(yin)頭；如果(guo)取下打印(yin)(yin)頭后，故障依舊，接著檢查(cha)傳(chuan)感(gan)器，并更換短(duan)路的傳(chuan)感(gan)器。
9、如(ru)(ru)果(guo)(guo)控制面板(ban)電(dian)源指示(shi)燈(deng)無(wu)顯示(shi)，則(ze)檢(jian)查(cha)主(zhu)板(ban)中的(de)芯片(pian)是否有(you)(you)被燒壞的(de)痕跡(ji)（如(ru)(ru)開(kai)裂、發燙等），如(ru)(ru)果(guo)(guo)有(you)(you)，檢(jian)查(cha)異常(chang)的(de)芯片(pian)，如(ru)(ru)果(guo)(guo)芯片(pian)損(sun)(sun)壞，更換(huan)芯片(pian)；如(ru)(ru)果(guo)(guo)沒有(you)(you)被燒壞的(de)芯片(pian)，接著測(ce)量主(zhu)板(ban)上5V電(dian)源對地阻值，判斷主(zhu)板(ban)是否短(duan)(duan)路，如(ru)(ru)果(guo)(guo)主(zhu)板(ban)短(duan)(duan)路，維修或更換(huan)主(zhu)板(ban)；如(ru)(ru)果(guo)(guo)主(zhu)板(ban)沒有(you)(you)短(duan)(duan)路，接著檢(jian)查(cha)主(zhu)板(ban)中的(de)門陣(zhen)列(lie)電(dian)路、CPU等其他元(yuan)器(qi)件是否損(sun)(sun)壞，如(ru)(ru)果(guo)(guo)損(sun)(sun)壞，更換(huan)損(sun)(sun)壞的(de)元(yuan)器(qi)件；如(ru)(ru)果(guo)(guo)主(zhu)板(ban)中沒有(you)(you)損(sun)(sun)壞的(de)元(yuan)器(qi)件，最后更換(huan)主(zhu)板(ban)。
