一、針式打印機打印原理是什么
針式打(da)印機主要用(yong)(yong)(yong)于完成各項單(dan)據的(de)復(fu)寫，為(wei)用(yong)(yong)(yong)戶提供(gong)高效的(de)服務(wu)，它的(de)作用(yong)(yong)(yong)是噴(pen)墨打(da)印技(ji)術(shu)和激(ji)光打(da)印技(ji)術(shu)無法實(shi)現(xian)的(de)，那么(me)針式打(da)印機的(de)原理是什么(me)呢(ni)？
針(zhen)式打(da)(da)印(yin)機是壓(ya)感式打(da)(da)針(zhen)，通過打(da)(da)印(yin)頭中(zhong)的(de)針(zhen)擊(ji)打(da)(da)復(fu)寫紙(zhi)，打(da)(da)印(yin)時(shi)打(da)(da)印(yin)針(zhen)頭彈出，將色(se)帶顏色(se)打(da)(da)印(yin)到紙(zhi)張(zhang)上，打(da)(da)印(yin)過程中(zhong)針(zhen)頭會(hui)一(yi)直對紙(zhi)張(zhang)施加壓(ya)力，可以使(shi)多層的(de)復(fu)寫紙(zhi)打(da)(da)印(yin)出同樣(yang)的(de)效果，所以除了(le)第一(yi)張(zhang)紙(zhi)上的(de)字跡(ji)來自于色(se)帶的(de)油墨(mo)外，下層紙(zhi)張(zhang)也(ye)會(hui)同時(shi)顯示出字跡(ji)，從而實現了(le)多聯(lian)打(da)(da)印(yin)。
二、針式打印機無法打印如何解決
針式打(da)(da)印機(ji)用來打(da)(da)印各(ge)種票據、多份聯(lian)打(da)(da)是很方便的，在使用針式打(da)(da)印機(ji)的時(shi)候，有時(shi)會遇(yu)到無法打(da)(da)印的問題，可能的故障(zhang)原因有很多，一般是電(dian)路問題，可以采(cai)取以下方法排(pai)查故障(zhang)并解決：
1、首先檢查(cha)電(dian)源(yuan)電(dian)路(lu)板(ban)(ban)與主(zhu)(zhu)板(ban)(ban)連(lian)線(xian)(xian)是否正確(que)連(lian)接（連(lian)線(xian)(xian)是否插反或(huo)斜(xie)接或(huo)虛接），如果(guo)電(dian)源(yuan)電(dian)路(lu)板(ban)(ban)與主(zhu)(zhu)板(ban)(ban)連(lian)線(xian)(xian)接觸(chu)不良，重新插好連(lian)線(xian)(xian)。
2、如果電源電路板(ban)(ban)與(yu)主板(ban)(ban)連線正(zheng)常(chang)，接(jie)著(zhu)檢查主板(ban)(ban)與(yu)控(kong)制(zhi)面板(ban)(ban)的連線是否正(zheng)常(chang)，如果不正(zheng)常(chang)，將連線重新(xin)連接(jie)好。
3、如(ru)果主板(ban)與控制面板(ban)的連線正(zheng)常，接著檢查電(dian)源開關(guan)是否正(zheng)常，發現電(dian)源開關(guan)損壞，則(ze)更換(huan)電(dian)源開關(guan)。
4、如(ru)果(guo)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)開(kai)(kai)關(guan)(guan)正(zheng)常(chang)(chang)(chang)，接著(zhu)斷開(kai)(kai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路板(ban)(ban)(ban)(ban)(ban)與主板(ban)(ban)(ban)(ban)(ban)的(de)連接，然后接入220V，用萬用表(biao)檢測(ce)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路板(ban)(ban)(ban)(ban)(ban)的(de)直流輸出(chu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓是否正(zheng)常(chang)(chang)(chang)；如(ru)果(guo)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路板(ban)(ban)(ban)(ban)(ban)輸出(chu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓不正(zheng)常(chang)(chang)(chang)，則(ze)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路板(ban)(ban)(ban)(ban)(ban)損壞(huai)，檢查電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路板(ban)(ban)(ban)(ban)(ban)開(kai)(kai)關(guan)(guan)是否損壞(huai)，如(ru)果(guo)損壞(huai)，更換(huan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路板(ban)(ban)(ban)(ban)(ban)開(kai)(kai)關(guan)(guan)。
5、如(ru)果電源電路(lu)板(ban)開關正常，接(jie)著檢(jian)測電源電路(lu)板(ban)中(zhong)的初(chu)級(ji)電路(lu)的保(bao)險管F1是(shi)否熔(rong)斷(duan)。如(ru)果保(bao)險管F1熔(rong)斷(duan)，檢(jian)查(cha)電源電路(lu)板(ban)其余電路(lu)是(shi)否存(cun)在短(duan)路(lu)問題，如(ru)果沒有可以更換(huan)F1。
6、如(ru)果保險管正(zheng)常，接著檢查電(dian)(dian)源(yuan)電(dian)(dian)路(lu)板中的開關(guan)管、二極管、整(zheng)流(liu)橋電(dian)(dian)路(lu)等是否正(zheng)常，如(ru)果不正(zheng)常，更換損壞的元器件或電(dian)(dian)源(yuan)電(dian)(dian)路(lu)板。
7、如果第4步中(zhong)測量的電(dian)源(yuan)(yuan)(yuan)輸出(chu)電(dian)壓正(zheng)常(chang)，接著將電(dian)機連線、頭纜(lan)線、傳感器線從(cong)主(zhu)板上撥下，只連電(dian)源(yuan)(yuan)(yuan)電(dian)路板線及(ji)控(kong)制(zhi)(zhi)面(mian)板電(dian)纜(lan)線，然后(hou)接通電(dian)源(yuan)(yuan)(yuan)，看控(kong)制(zhi)(zhi)面(mian)板的電(dian)源(yuan)(yuan)(yuan)指示燈是否亮(liang)，如果控(kong)制(zhi)(zhi)面(mian)板電(dian)源(yuan)(yuan)(yuan)指示燈顯(xian)示有電(dian)，說明(ming)主(zhu)板正(zheng)常(chang)，問題(ti)出(chu)在外圍電(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(you)電，說明打(da)印頭內部(bu)有(you)短路（打(da)印頭線圈、針驅動管或芯片2B短路），更換(huan)短路的(de)部(bu)件或更換(huan)打(da)印頭；如果取下(xia)打(da)印頭后，故(gu)障依舊，接著檢查傳(chuan)感(gan)器(qi)，并更換(huan)短路的(de)傳(chuan)感(gan)器(qi)。
9、如(ru)(ru)(ru)(ru)(ru)果(guo)(guo)控制面板(ban)電(dian)源指(zhi)示燈無(wu)顯示，則檢查(cha)主(zhu)(zhu)(zhu)板(ban)中的(de)芯(xin)片(pian)是(shi)否(fou)有被(bei)燒壞(huai)的(de)痕跡(ji)（如(ru)(ru)(ru)(ru)(ru)開裂、發燙等），如(ru)(ru)(ru)(ru)(ru)果(guo)(guo)有，檢查(cha)異常的(de)芯(xin)片(pian)，如(ru)(ru)(ru)(ru)(ru)果(guo)(guo)芯(xin)片(pian)損(sun)壞(huai)，更換(huan)芯(xin)片(pian)；如(ru)(ru)(ru)(ru)(ru)果(guo)(guo)沒有被(bei)燒壞(huai)的(de)芯(xin)片(pian)，接著測量主(zhu)(zhu)(zhu)板(ban)上5V電(dian)源對地阻(zu)值，判斷主(zhu)(zhu)(zhu)板(ban)是(shi)否(fou)短(duan)路，如(ru)(ru)(ru)(ru)(ru)果(guo)(guo)主(zhu)(zhu)(zhu)板(ban)短(duan)路，維(wei)修或更換(huan)主(zhu)(zhu)(zhu)板(ban)；如(ru)(ru)(ru)(ru)(ru)果(guo)(guo)主(zhu)(zhu)(zhu)板(ban)沒有短(duan)路，接著檢查(cha)主(zhu)(zhu)(zhu)板(ban)中的(de)門(men)陣列電(dian)路、CPU等其他元(yuan)器件是(shi)否(fou)損(sun)壞(huai)，如(ru)(ru)(ru)(ru)(ru)果(guo)(guo)損(sun)壞(huai)，更換(huan)損(sun)壞(huai)的(de)元(yuan)器件；如(ru)(ru)(ru)(ru)(ru)果(guo)(guo)主(zhu)(zhu)(zhu)板(ban)中沒有損(sun)壞(huai)的(de)元(yuan)器件，最后(hou)更換(huan)主(zhu)(zhu)(zhu)板(ban)。
