一、針式打印機打印原理是什么
針式(shi)打印(yin)機主(zhu)要用于(yu)完成各項單據(ju)的(de)復寫，為用戶(hu)提供高效的(de)服務，它的(de)作用是噴墨(mo)打印(yin)技(ji)(ji)術(shu)和激光打印(yin)技(ji)(ji)術(shu)無法實現(xian)的(de)，那(nei)么針式(shi)打印(yin)機的(de)原(yuan)理是什(shen)么呢？
針(zhen)式打(da)(da)印(yin)機是壓感式打(da)(da)針(zhen)，通過打(da)(da)印(yin)頭中(zhong)的(de)(de)針(zhen)擊打(da)(da)復(fu)寫(xie)紙(zhi)，打(da)(da)印(yin)時(shi)打(da)(da)印(yin)針(zhen)頭彈出，將色帶顏色打(da)(da)印(yin)到(dao)紙(zhi)張(zhang)上(shang)(shang)，打(da)(da)印(yin)過程中(zhong)針(zhen)頭會(hui)一直對(dui)紙(zhi)張(zhang)施(shi)加壓力，可(ke)以(yi)使多(duo)層(ceng)的(de)(de)復(fu)寫(xie)紙(zhi)打(da)(da)印(yin)出同樣的(de)(de)效果(guo)，所以(yi)除了(le)第一張(zhang)紙(zhi)上(shang)(shang)的(de)(de)字跡來自于色帶的(de)(de)油墨外(wai)，下層(ceng)紙(zhi)張(zhang)也會(hui)同時(shi)顯示(shi)出字跡，從而實現了(le)多(duo)聯打(da)(da)印(yin)。
二、針式打印機無法打印如何解決
針(zhen)式打印(yin)(yin)機(ji)用(yong)來打印(yin)(yin)各種票據、多份聯打是很方便的，在使用(yong)針(zhen)式打印(yin)(yin)機(ji)的時候，有(you)時會遇到(dao)無(wu)法打印(yin)(yin)的問題(ti)(ti)，可能的故(gu)障(zhang)原(yuan)因(yin)有(you)很多，一般是電路問題(ti)(ti)，可以(yi)采取(qu)以(yi)下方法排查故(gu)障(zhang)并解決：
1、首先檢查電源電路(lu)板與主板連(lian)線是(shi)(shi)否正(zheng)確連(lian)接(jie)（連(lian)線是(shi)(shi)否插反或斜接(jie)或虛接(jie)），如果電源電路(lu)板與主板連(lian)線接(jie)觸不良(liang)，重新插好連(lian)線。
2、如果電源電路(lu)板(ban)與(yu)主板(ban)連線正(zheng)常，接(jie)著(zhu)檢查(cha)主板(ban)與(yu)控制面板(ban)的連線是否正(zheng)常，如果不正(zheng)常，將連線重新連接(jie)好(hao)。
3、如果主板(ban)與控制面板(ban)的(de)連線(xian)正(zheng)常，接著檢查電(dian)源開(kai)(kai)關(guan)是否(fou)正(zheng)常，發現電(dian)源開(kai)(kai)關(guan)損(sun)壞，則更換電(dian)源開(kai)(kai)關(guan)。
4、如果(guo)電(dian)(dian)(dian)(dian)(dian)源開(kai)關(guan)(guan)正常，接著斷開(kai)電(dian)(dian)(dian)(dian)(dian)源電(dian)(dian)(dian)(dian)(dian)路(lu)(lu)板(ban)(ban)與主板(ban)(ban)的(de)連接，然(ran)后接入220V，用(yong)萬(wan)用(yong)表檢測(ce)電(dian)(dian)(dian)(dian)(dian)源電(dian)(dian)(dian)(dian)(dian)路(lu)(lu)板(ban)(ban)的(de)直流輸出電(dian)(dian)(dian)(dian)(dian)壓是否正常；如果(guo)電(dian)(dian)(dian)(dian)(dian)源電(dian)(dian)(dian)(dian)(dian)路(lu)(lu)板(ban)(ban)輸出電(dian)(dian)(dian)(dian)(dian)壓不正常，則電(dian)(dian)(dian)(dian)(dian)源電(dian)(dian)(dian)(dian)(dian)路(lu)(lu)板(ban)(ban)損(sun)壞，檢查電(dian)(dian)(dian)(dian)(dian)源電(dian)(dian)(dian)(dian)(dian)路(lu)(lu)板(ban)(ban)開(kai)關(guan)(guan)是否損(sun)壞，如果(guo)損(sun)壞，更換電(dian)(dian)(dian)(dian)(dian)源電(dian)(dian)(dian)(dian)(dian)路(lu)(lu)板(ban)(ban)開(kai)關(guan)(guan)。
5、如(ru)果(guo)電(dian)(dian)(dian)源電(dian)(dian)(dian)路(lu)(lu)板(ban)開關正常，接著(zhu)檢測電(dian)(dian)(dian)源電(dian)(dian)(dian)路(lu)(lu)板(ban)中的初級電(dian)(dian)(dian)路(lu)(lu)的保險管(guan)F1是否熔斷(duan)。如(ru)果(guo)保險管(guan)F1熔斷(duan)，檢查電(dian)(dian)(dian)源電(dian)(dian)(dian)路(lu)(lu)板(ban)其余電(dian)(dian)(dian)路(lu)(lu)是否存在短路(lu)(lu)問題，如(ru)果(guo)沒有可以更換F1。
6、如果(guo)保險管(guan)(guan)正常(chang)，接著檢查(cha)電(dian)(dian)源電(dian)(dian)路板(ban)中的開關管(guan)(guan)、二極管(guan)(guan)、整(zheng)流橋電(dian)(dian)路等(deng)是否正常(chang)，如果(guo)不正常(chang)，更(geng)換損壞的元器件(jian)或電(dian)(dian)源電(dian)(dian)路板(ban)。
7、如(ru)果第(di)4步中(zhong)測量的電(dian)(dian)(dian)(dian)源(yuan)輸出電(dian)(dian)(dian)(dian)壓(ya)正常，接(jie)(jie)著將電(dian)(dian)(dian)(dian)機連線(xian)(xian)、頭纜(lan)線(xian)(xian)、傳感器線(xian)(xian)從主(zhu)板(ban)上撥下，只連電(dian)(dian)(dian)(dian)源(yuan)電(dian)(dian)(dian)(dian)路板(ban)線(xian)(xian)及控(kong)(kong)制(zhi)面(mian)板(ban)電(dian)(dian)(dian)(dian)纜(lan)線(xian)(xian)，然(ran)后接(jie)(jie)通電(dian)(dian)(dian)(dian)源(yuan)，看控(kong)(kong)制(zhi)面(mian)板(ban)的電(dian)(dian)(dian)(dian)源(yuan)指(zhi)示(shi)燈(deng)是否亮，如(ru)果控(kong)(kong)制(zhi)面(mian)板(ban)電(dian)(dian)(dian)(dian)源(yuan)指(zhi)示(shi)燈(deng)顯示(shi)有電(dian)(dian)(dian)(dian)，說明主(zhu)板(ban)正常，問題出在外圍電(dian)(dian)(dian)(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(ming)打(da)印頭內部有(you)短(duan)路(lu)（打(da)印頭線圈(quan)、針驅動管或芯片2B短(duan)路(lu)），更(geng)(geng)換短(duan)路(lu)的部件或更(geng)(geng)換打(da)印頭；如(ru)果取下打(da)印頭后，故障(zhang)依舊，接著檢(jian)查傳感器，并更(geng)(geng)換短(duan)路(lu)的傳感器。
9、如(ru)(ru)(ru)(ru)果(guo)(guo)控(kong)制(zhi)面板(ban)電源指示燈無顯示，則檢查主(zhu)(zhu)(zhu)板(ban)中(zhong)的(de)(de)芯片(pian)(pian)(pian)是(shi)否(fou)有(you)被燒壞(huai)(huai)的(de)(de)痕跡（如(ru)(ru)(ru)(ru)開裂、發(fa)燙等），如(ru)(ru)(ru)(ru)果(guo)(guo)有(you)，檢查異常的(de)(de)芯片(pian)(pian)(pian)，如(ru)(ru)(ru)(ru)果(guo)(guo)芯片(pian)(pian)(pian)損(sun)(sun)(sun)壞(huai)(huai)，更換芯片(pian)(pian)(pian)；如(ru)(ru)(ru)(ru)果(guo)(guo)沒有(you)被燒壞(huai)(huai)的(de)(de)芯片(pian)(pian)(pian)，接著(zhu)(zhu)測量主(zhu)(zhu)(zhu)板(ban)上5V電源對地(di)阻值，判斷主(zhu)(zhu)(zhu)板(ban)是(shi)否(fou)短路(lu)(lu)(lu)，如(ru)(ru)(ru)(ru)果(guo)(guo)主(zhu)(zhu)(zhu)板(ban)短路(lu)(lu)(lu)，維修或更換主(zhu)(zhu)(zhu)板(ban)；如(ru)(ru)(ru)(ru)果(guo)(guo)主(zhu)(zhu)(zhu)板(ban)沒有(you)短路(lu)(lu)(lu)，接著(zhu)(zhu)檢查主(zhu)(zhu)(zhu)板(ban)中(zhong)的(de)(de)門陣列電路(lu)(lu)(lu)、CPU等其他(ta)元器件(jian)(jian)是(shi)否(fou)損(sun)(sun)(sun)壞(huai)(huai)，如(ru)(ru)(ru)(ru)果(guo)(guo)損(sun)(sun)(sun)壞(huai)(huai)，更換損(sun)(sun)(sun)壞(huai)(huai)的(de)(de)元器件(jian)(jian)；如(ru)(ru)(ru)(ru)果(guo)(guo)主(zhu)(zhu)(zhu)板(ban)中(zhong)沒有(you)損(sun)(sun)(sun)壞(huai)(huai)的(de)(de)元器件(jian)(jian)，最后(hou)更換主(zhu)(zhu)(zhu)板(ban)。
