一、針式打印機打印原理是什么
針式打(da)印(yin)機主要用(yong)于(yu)完成(cheng)各項(xiang)單據的(de)復寫，為用(yong)戶提(ti)供高效的(de)服務，它的(de)作用(yong)是噴(pen)墨打(da)印(yin)技(ji)(ji)術(shu)(shu)和激光打(da)印(yin)技(ji)(ji)術(shu)(shu)無法實(shi)現的(de)，那么針式打(da)印(yin)機的(de)原理是什么呢？
針(zhen)(zhen)(zhen)式(shi)打(da)(da)印機是壓感式(shi)打(da)(da)針(zhen)(zhen)(zhen)，通過打(da)(da)印頭(tou)中的(de)針(zhen)(zhen)(zhen)擊打(da)(da)復寫紙(zhi)(zhi)，打(da)(da)印時(shi)打(da)(da)印針(zhen)(zhen)(zhen)頭(tou)彈出，將色(se)帶顏色(se)打(da)(da)印到紙(zhi)(zhi)張(zhang)上，打(da)(da)印過程中針(zhen)(zhen)(zhen)頭(tou)會一(yi)直對紙(zhi)(zhi)張(zhang)施加壓力，可以使多層(ceng)的(de)復寫紙(zhi)(zhi)打(da)(da)印出同樣(yang)的(de)效(xiao)果(guo)，所(suo)以除(chu)了第一(yi)張(zhang)紙(zhi)(zhi)上的(de)字(zi)跡來自于色(se)帶的(de)油墨外，下層(ceng)紙(zhi)(zhi)張(zhang)也會同時(shi)顯示出字(zi)跡，從而(er)實(shi)現了多聯打(da)(da)印。
二、針式打印機無法打印如何解決
針式打印機用來打印各種票據、多份聯打是(shi)很(hen)方便的，在使用針式打印機的時(shi)(shi)候，有時(shi)(shi)會遇(yu)到無法(fa)打印的問(wen)題，可(ke)能(neng)的故(gu)障原(yuan)因(yin)有很(hen)多，一(yi)般是(shi)電路問(wen)題，可(ke)以(yi)采取(qu)以(yi)下(xia)方法(fa)排查故(gu)障并解決：
1、首(shou)先檢查電(dian)(dian)源電(dian)(dian)路(lu)板與主板連(lian)(lian)線(xian)(xian)是(shi)(shi)否(fou)正確連(lian)(lian)接（連(lian)(lian)線(xian)(xian)是(shi)(shi)否(fou)插(cha)反或(huo)(huo)斜(xie)接或(huo)(huo)虛(xu)接），如果電(dian)(dian)源電(dian)(dian)路(lu)板與主板連(lian)(lian)線(xian)(xian)接觸不良(liang)，重新插(cha)好(hao)連(lian)(lian)線(xian)(xian)。
2、如果(guo)電源電路板(ban)與(yu)主板(ban)連(lian)線(xian)(xian)正(zheng)常(chang)，接著檢(jian)查主板(ban)與(yu)控(kong)制面板(ban)的連(lian)線(xian)(xian)是否正(zheng)常(chang)，如果(guo)不正(zheng)常(chang)，將連(lian)線(xian)(xian)重新連(lian)接好。
3、如果(guo)主板(ban)與控制面板(ban)的連線正常，接著檢查電(dian)源(yuan)(yuan)開關(guan)是否正常，發現(xian)電(dian)源(yuan)(yuan)開關(guan)損(sun)壞，則更換電(dian)源(yuan)(yuan)開關(guan)。
4、如果(guo)電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)開(kai)關(guan)正常，接著(zhu)斷開(kai)電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)電(dian)(dian)(dian)(dian)(dian)路板(ban)(ban)與(yu)主板(ban)(ban)的(de)連接，然后接入(ru)220V，用萬(wan)用表(biao)檢測電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)電(dian)(dian)(dian)(dian)(dian)路板(ban)(ban)的(de)直流輸出電(dian)(dian)(dian)(dian)(dian)壓(ya)是(shi)(shi)否(fou)正常；如果(guo)電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)電(dian)(dian)(dian)(dian)(dian)路板(ban)(ban)輸出電(dian)(dian)(dian)(dian)(dian)壓(ya)不正常，則電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)電(dian)(dian)(dian)(dian)(dian)路板(ban)(ban)損壞，檢查電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)電(dian)(dian)(dian)(dian)(dian)路板(ban)(ban)開(kai)關(guan)是(shi)(shi)否(fou)損壞，如果(guo)損壞，更換(huan)電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)電(dian)(dian)(dian)(dian)(dian)路板(ban)(ban)開(kai)關(guan)。
5、如(ru)果(guo)電(dian)(dian)(dian)源(yuan)電(dian)(dian)(dian)路(lu)板開關正常，接著(zhu)檢測電(dian)(dian)(dian)源(yuan)電(dian)(dian)(dian)路(lu)板中的初級電(dian)(dian)(dian)路(lu)的保險(xian)管(guan)F1是否(fou)熔(rong)斷。如(ru)果(guo)保險(xian)管(guan)F1熔(rong)斷，檢查電(dian)(dian)(dian)源(yuan)電(dian)(dian)(dian)路(lu)板其余(yu)電(dian)(dian)(dian)路(lu)是否(fou)存在(zai)短路(lu)問題，如(ru)果(guo)沒有可以更換F1。
6、如果(guo)保險管正常(chang)(chang)，接著檢查電源電路板(ban)中的開(kai)關管、二(er)極管、整流(liu)橋(qiao)電路等是(shi)否正常(chang)(chang)，如果(guo)不正常(chang)(chang)，更(geng)換損壞的元(yuan)器(qi)件或電源電路板(ban)。
7、如果第4步中測(ce)量的電(dian)源(yuan)輸出電(dian)壓正常，接著將電(dian)機(ji)連(lian)線、頭纜線、傳感器線從主板(ban)(ban)(ban)上(shang)撥(bo)下(xia)，只連(lian)電(dian)源(yuan)電(dian)路板(ban)(ban)(ban)線及控制(zhi)面板(ban)(ban)(ban)電(dian)纜線，然后(hou)接通電(dian)源(yuan)，看控制(zhi)面板(ban)(ban)(ban)的電(dian)源(yuan)指(zhi)示燈是否亮(liang)，如果控制(zhi)面板(ban)(ban)(ban)電(dian)源(yuan)指(zhi)示燈顯示有(you)電(dian)，說明主板(ban)(ban)(ban)正常，問題(ti)出在外圍電(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。如果針式打印機有電(dian)，說明打印頭(tou)內部有短(duan)(duan)路(lu)（打印頭(tou)線圈、針(zhen)驅動(dong)管(guan)或芯片2B短(duan)(duan)路(lu)），更換短(duan)(duan)路(lu)的部件(jian)或更換打印頭(tou)；如果(guo)取下打印頭(tou)后(hou)，故障依舊，接著檢(jian)查傳(chuan)感器(qi)，并更換短(duan)(duan)路(lu)的傳(chuan)感器(qi)。
9、如果(guo)(guo)控制(zhi)面板(ban)(ban)(ban)(ban)電源(yuan)指示(shi)燈無(wu)顯示(shi)，則檢(jian)查主(zhu)(zhu)(zhu)板(ban)(ban)(ban)(ban)中的(de)芯片是(shi)否(fou)有(you)(you)被(bei)燒(shao)壞(huai)(huai)(huai)的(de)痕跡（如開裂、發燙等(deng)），如果(guo)(guo)有(you)(you)，檢(jian)查異(yi)常(chang)的(de)芯片，如果(guo)(guo)芯片損(sun)(sun)壞(huai)(huai)(huai)，更(geng)換芯片；如果(guo)(guo)沒(mei)有(you)(you)被(bei)燒(shao)壞(huai)(huai)(huai)的(de)芯片，接著測量主(zhu)(zhu)(zhu)板(ban)(ban)(ban)(ban)上5V電源(yuan)對地阻值，判斷主(zhu)(zhu)(zhu)板(ban)(ban)(ban)(ban)是(shi)否(fou)短路，如果(guo)(guo)主(zhu)(zhu)(zhu)板(ban)(ban)(ban)(ban)短路，維修或更(geng)換主(zhu)(zhu)(zhu)板(ban)(ban)(ban)(ban)；如果(guo)(guo)主(zhu)(zhu)(zhu)板(ban)(ban)(ban)(ban)沒(mei)有(you)(you)短路，接著檢(jian)查主(zhu)(zhu)(zhu)板(ban)(ban)(ban)(ban)中的(de)門陣列電路、CPU等(deng)其(qi)他元器件是(shi)否(fou)損(sun)(sun)壞(huai)(huai)(huai)，如果(guo)(guo)損(sun)(sun)壞(huai)(huai)(huai)，更(geng)換損(sun)(sun)壞(huai)(huai)(huai)的(de)元器件；如果(guo)(guo)主(zhu)(zhu)(zhu)板(ban)(ban)(ban)(ban)中沒(mei)有(you)(you)損(sun)(sun)壞(huai)(huai)(huai)的(de)元器件，最后更(geng)換主(zhu)(zhu)(zhu)板(ban)(ban)(ban)(ban)。
