手機開不了機的原因

1、開機線不(bu)正常引起的不(bu)開機

正常情況下，按下手機開(kai)機(ji)(ji)鍵(jian)時(shi)，開(kai)機(ji)(ji)鍵(jian)的觸(chu)發端(duan)電(dian)壓應(ying)有(you)明顯變化，若(ruo)無變化，一(yi)般是(shi)開(kai)機(ji)(ji)鍵(jian)接(jie)(jie)觸(chu)不(bu)(bu)良或者是(shi)開(kai)機(ji)(ji)線(xian)(xian)斷(duan)線(xian)(xian)、元(yuan)件虛(xu)焊(han)、損壞。維修(xiu)時(shi)，用外(wai)接(jie)(jie)電(dian)源(yuan)供電(dian)，觀察電(dian)流表(biao)的變化，如(ru)果電(dian)流表(biao)無反應(ying)，一(yi)般是(shi)開(kai)機(ji)(ji)線(xian)(xian)斷(duan)線(xian)(xian)或開(kai)機(ji)(ji)鍵(jian)不(bu)(bu)良。

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2、電池供電電路不(bu)良引起(qi)的(de)不(bu)開(kai)機

對(dui)(dui)于大(da)部(bu)分手(shou)(shou)機(ji)，手(shou)(shou)機(ji)加(jia)上電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)或(huo)外(wai)(wai)接(jie)(jie)(jie)(jie)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)后，供(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓直接(jie)(jie)(jie)(jie)加(jia)到(dao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)工(gong)C上，如(ru)(ru)果(guo)供(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓未加(jia)到(dao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)IC上，手(shou)(shou)機(ji)就不(bu)(bu)(bu)可(ke)能開(kai)(kai)機(ji)。對(dui)(dui)于摩托羅拉系列(lie)的(de)(de)手(shou)(shou)機(ji)(摩托羅拉T2688除(chu)外(wai)(wai))，供(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)有所不(bu)(bu)(bu)同(tong)，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)供(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)和(he)(he)(he)外(wai)(wai)接(jie)(jie)(jie)(jie)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)供(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)要經過電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)(zi)開(kai)(kai)關(guan)(guan)轉換再加(jia)到(dao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)IC上。也就是(shi)(shi)說，手(shou)(shou)機(ji)的(de)(de)供(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)有兩(liang)條路(lu)徑，一路(lu)是(shi)(shi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)供(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian);另一路(lu)是(shi)(shi)外(wai)(wai)部(bu)接(jie)(jie)(jie)(jie)口供(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(帶機(ji)充電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)座供(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)時(shi))。當兩(liang)路(lu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)同(tong)時(shi)供(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)時(shi)，外(wai)(wai)部(bu)接(jie)(jie)(jie)(jie)口供(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)優(you)先。而這兩(liang)路(lu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)的(de)(de)切換是(shi)(shi)由電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)(zi)開(kai)(kai)關(guan)(guan)管(guan)來(lai)控(kong)制(zhi)，主要達到(dao)對(dui)(dui)整機(ji)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流起到(dao)保護作(zuo)用，防止因(yin)短路(lu)或(huo)者漏電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)對(dui)(dui)手(shou)(shou)機(ji)內部(bu)的(de)(de)集成電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)造(zao)成損壞(huai)。但是(shi)(shi)，如(ru)(ru)果(guo)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)(zi)開(kai)(kai)關(guan)(guan)損壞(huai)，中源(yuan)(yuan)模塊就有可(ke)能得不(bu)(bu)(bu)到(dao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)的(de)(de)供(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓引起手(shou)(shou)機(ji)不(bu)(bu)(bu)開(kai)(kai)機(ji)。對(dui)(dui)于這種由電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)(zi)開(kai)(kai)關(guan)(guan)供(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)的(de)(de)手(shou)(shou)機(ji)，由于既可(ke)以用外(wai)(wai)接(jie)(jie)(jie)(jie)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)接(jie)(jie)(jie)(jie)口供(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)，也可(ke)以通過電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)觸片用外(wai)(wai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)加(jia)以供(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)。維(wei)修(xiu)時(shi)可(ke)通過不(bu)(bu)(bu)同(tong)的(de)(de)供(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)方(fang)式進(jin)行(xing)供(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)，以便(bian)區分故障(zhang)范圍和(he)(he)(he)確(que)定電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)(zi)開(kai)(kai)關(guan)(guan)是(shi)(shi)否正常。一般來(lai)說，如(ru)(ru)果(guo)供(gong)(gong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)不(bu)(bu)(bu)良，按開(kai)(kai)機(ji)鍵電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流表會無(wu)反應(ying)，這和(he)(he)(he)開(kai)(kai)機(ji)線(xian)不(bu)(bu)(bu)良十分相似。

3、電源IC不(bu)正(zheng)常引起的(de)不(bu)開

手機要(yao)正常(chang)工(gong)作(zuo)，電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)要(yao)輸(shu)出正常(chang)的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)供給(gei)(gei)負(fu)載電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)。在電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)中，電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)IC是(shi)其(qi)核心電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)，不(bu)(bu)同品(pin)種及型號(hao)的(de)(de)手(shou)機(ji)(ji)(ji)(ji)，供電(dian)(dian)(dian)(dian)(dian)(dian)方(fang)式亦(yi)有(you)所不(bu)(bu)同，有(you)的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)的(de)(de)供電(dian)(dian)(dian)(dian)(dian)(dian)由(you)幾塊(kuai)(kuai)穩壓(ya)管(guan)供給(gei)(gei)，如愛立信早期(qi)系(xi)(xi)列(T18之前)手(shou)機(ji)(ji)(ji)(ji)、部分三(san)星系(xi)(xi)列手(shou)機(ji)(ji)(ji)(ji)等(deng)。有(you)的(de)(de)卻有(you)一(yi)塊(kuai)(kuai)電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)模塊(kuai)(kuai)直接供給(gei)(gei)，如摩(mo)托羅拉系(xi)(xi)列手(shou)機(ji)(ji)(ji)(ji)、諾基亞系(xi)(xi)列手(shou)機(ji)(ji)(ji)(ji)等(deng)。但不(bu)(bu)管(guan)怎樣，如果電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)IC不(bu)(bu)能(neng)(neng)正常(chang)工(gong)作(zuo)，就(jiu)有(you)可(ke)(ke)能(neng)(neng)造(zao)成手(shou)機(ji)(ji)(ji)(ji)不(bu)(bu)開(kai)機(ji)(ji)(ji)(ji)。對于電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)IC，重點是(shi)檢查其(qi)輸(shu)出的(de)(de)邏輯供電(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)、13MHz時(shi)鐘供電(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)，在按開(kai)機(ji)(ji)(ji)(ji)鍵(jian)的(de)(de)過程中應能(neng)(neng)測(ce)到(不(bu)(bu)一(yi)定(ding)維(wei)(wei)持住(zhu))，若測(ce)不(bu)(bu)到，在開(kai)機(ji)(ji)(ji)(ji)鍵(jian)、電(dian)(dian)(dian)(dian)(dian)(dian)池供電(dian)(dian)(dian)(dian)(dian)(dian)正常(chang)的(de)(de)情況下，說明電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)IC虛焊、損壞。目(mu)前，越(yue)(yue)來越(yue)(yue)多的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)IC采(cai)用(yong)了(le)BGA封裝，給(gei)(gei)測(ce)量和維(wei)(wei)修(xiu)帶來了(le)很大的(de)(de)負(fu)擔，測(ce)量時(shi)可(ke)(ke)對照電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)原(yuan)理圖在電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)IC的(de)(de)外(wai)圍電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)的(de)(de)測(ce)試(shi)點上進(jin)行測(ce)試(shi)。若判斷(duan)電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)IC虛焊或損壞，需重新(xin)植錫、代(dai)換，這需要(yao)較高(gao)的(de)(de)操作(zuo)技(ji)巧(qiao)，需在實踐(jian)中加以磨練。

4、系(xi)統對鐘和(he)復位不正(zheng)常引起的不開機

系統時鐘是CPU正常工作的條件之一，手機的(de)(de)(de)(de)系統(tong)時(shi)(shi)鐘(zhong)(zhong)一(yi)(yi)(yi)般(ban)(ban)采用(yong)13MHz，13MHz時(shi)(shi)鐘(zhong)(zhong)不(bu)(bu)正(zheng)(zheng)常，邏(luo)輯電(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)(lu)不(bu)(bu)工作，手(shou)(shou)(shou)機(ji)(ji)(ji)(ji)(ji)不(bu)(bu)可能開(kai)機(ji)(ji)(ji)(ji)(ji)。13MHz時(shi)(shi)鐘(zhong)(zhong)信(xin)號(hao)(hao)應(ying)能達到(dao)一(yi)(yi)(yi)定的(de)(de)(de)(de)幅度并(bing)穩(wen)定。用(yong)示(shi)(shi)波(bo)器測(ce)(ce)(ce)13MHz時(shi)(shi)鐘(zhong)(zhong)輸出端上(shang)的(de)(de)(de)(de)波(bo)形(xing)，如果無波(bo)形(xing)則(ze)檢測(ce)(ce)(ce)13MHz時(shi)(shi)鐘(zhong)(zhong)振蕩(dang)(dang)電(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)(lu)的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)源電(dian)(dian)(dian)(dian)壓(ya)(對于13MHzVCO，供電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)壓(ya)加到(dao)13MHzVCO的(de)(de)(de)(de)一(yi)(yi)(yi)個(ge)腳(jiao)亡，對于13MHz晶振組成(cheng)的(de)(de)(de)(de)振蕩(dang)(dang)電(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)(lu)，這個(ge)供電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)壓(ya)一(yi)(yi)(yi)般(ban)(ban)供給中(zhong)頻(pin)IC)，若有(you)正(zheng)(zheng)常電(dian)(dian)(dian)(dian)壓(ya)則(ze)為13MHz時(shi)(shi)鐘(zhong)(zhong)晶體、中(zhong)頻(pin)IC或13MHzVCO壞(huai)。注(zhu)意，有(you)的(de)(de)(de)(de)示(shi)(shi)波(bo)器在(zai)晶體上(shang)測(ce)(ce)(ce)可能會使晶體停振，此時(shi)(shi)，可在(zai)探頭上(shang)串接一(yi)(yi)(yi)個(ge)幾十皮法以下的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)容(rong)。有(you)條(tiao)件(jian)(jian)的(de)(de)(de)(de)話，最好使用(yong)代換法進行維(wei)修，以節約時(shi)(shi)間，提高效(xiao)率(lv)。13MHz時(shi)(shi)鐘(zhong)(zhong)電(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)(lu)起振后，應(ying)確保13MHz時(shi)(shi)鐘(zhong)(zhong)信(xin)號(hao)(hao)能通過電(dian)(dian)(dian)(dian)阻、電(dian)(dian)(dian)(dian)容(rong)及放大電(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)(lu)輸人到(dao)CPU引腳(jiao)上(shang)，測(ce)(ce)(ce)試CPU時(shi)(shi)鐘(zhong)(zhong)輸入腳(jiao)，如沒有(you)，應(ying)檢查線路(lu)(lu)(lu)(lu)(lu)中(zhong)電(dian)(dian)(dian)(dian)阻、電(dian)(dian)(dian)(dian)容(rong)、放大電(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)(lu)是(shi)否虛焊或無供電(dian)(dian)(dian)(dian)及損壞(huai)。另外，有(you)些手(shou)(shou)(shou)機(ji)(ji)(ji)(ji)(ji)的(de)(de)(de)(de)時(shi)(shi)鐘(zhong)(zhong)晶體或時(shi)(shi)鐘(zhong)(zhong)VCO是(shi)26MHz(如摩托羅拉V998、諾基(ji)(ji)3310手(shou)(shou)(shou)機(ji)(ji)(ji)(ji)(ji))或19.5MHz(如三星A188手(shou)(shou)(shou)機(ji)(ji)(ji)(ji)(ji))，產生的(de)(de)(de)(de)振蕩(dang)(dang)頻(pin)率(lv)要經過中(zhong)頻(pin)IC分頻(pin)為13MHz后才供給CPU。復(fu)位信(xin)號(hao)(hao)也是(shi)CPU工作工作條(tiao)件(jian)(jian)之(zhi)一(yi)(yi)(yi)，符號(hao)(hao)是(shi)RESET，簡寫(xie)RST，諾基(ji)(ji)亞乎機(ji)(ji)(ji)(ji)(ji)中(zhong)用(yong)PURX表(biao)示(shi)(shi)。復(fu)位一(yi)(yi)(yi)般(ban)(ban)直接由(you)電(dian)(dian)(dian)(dian)源IC通往CPU，或使用(yong)一(yi)(yi)(yi)專用(yong)復(fu)位小集成(cheng)電(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)(lu)。復(fu)位在(zai)開(kai)機(ji)(ji)(ji)(ji)(ji)瞬間存在(zai)，開(kai)機(ji)(ji)(ji)(ji)(ji)后測(ce)(ce)(ce)量時(shi)(shi)己為高電(dian)(dian)(dian)(dian)平(ping)。如果需要測(ce)(ce)(ce)量正(zheng)(zheng)確的(de)(de)(de)(de)復(fu)位時(shi)(shi)間波(bo)形(xing)，應(ying)使用(yong)雙蹤示(shi)(shi)波(bo)器，一(yi)(yi)(yi)路(lu)(lu)(lu)(lu)(lu)測(ce)(ce)(ce)CPU電(dian)(dian)(dian)(dian)源，一(yi)(yi)(yi)路(lu)(lu)(lu)(lu)(lu)測(ce)(ce)(ce)復(fu)位。維(wei)修中(zhong)發現，因復(fu)位電(dian)(dian)(dian)(dian)路(lu)(lu)(lu)(lu)(lu)不(bu)(bu)正(zheng)(zheng)常引起的(de)(de)(de)(de)手(shou)(shou)(shou)機(ji)(ji)(ji)(ji)(ji)不(bu)(bu)開(kai)機(ji)(ji)(ji)(ji)(ji)并(bing)不(bu)(bu)多見。

5、邏輯(ji)電路不(bu)正常引起的不(bu)開機

邏輯電路重點檢測CPU對各存儲器的片選信號CE和許可信號OE，這些信號很重要，但關鍵是必須會尋找這些信號，由于越來越多的手機邏輯電路采用了BGA封裝的集成電路，給查找這些信號帶來了很大的困難。有條件的話最好對照圖紙來查找這些信號及其測量點。片選信號是一些上下跳變的脈沖信號，如果各存儲器CE都沒有，說明CPU沒有工作，補焊、重焊、代換CPU或再仔細檢查CPU作的條件是否具備。如果某個存儲器的片選信號沒有，多為該存儲器損壞。如果CE信號都有，說明CPU-F.作正常，故障可能是軟件故障或總線故障以及某個存儲器損壞。手機在(zai)使(shi)用(yong)中(zhong)經常(chang)會引起機(ji)板變(bian)形，如按(an)(an)按(an)(an)鍵(jian)、摔、碰等外力原因會引起某些芯(xin)(xin)片(pian)(pian)脫焊(han)，一般補(bu)焊(han)或重焊(han)這些芯(xin)(xin)片(pian)(pian)會解決大部分問題。當重焊(han)或代換正常(chang)的芯(xin)(xin)片(pian)(pian)還不能開機(ji)，并且(qie)使(shi)用(yong)免拆機(ji)維修(xiu)儀讀(du)寫也不能通過時，應逐個(ge)測(ce)量外圍電路和代換這些芯(xin)(xin)片(pian)(pian)。

6、軟件(jian)不正(zheng)常引起(qi)的不開機

手機在(zai)開機過程(cheng)中，若(ruo)軟(ruan)(ruan)件(jian)(jian)(jian)通不過就(jiu)會(hui)不開機，軟(ruan)(ruan)件(jian)(jian)(jian)出錯主要是(shi)存儲器資料不正常(chang)，當(dang)線路沒有明顯斷線時(shi)，可以先代換正常(chang)的碼片、版本或重(zhong)(zhong)寫軟(ruan)(ruan)件(jian)(jian)(jian)，有的芯片內電路會(hui)損壞，重(zhong)(zhong)寫時(shi)則不能(neng)通過。重(zhong)(zhong)寫軟(ruan)(ruan)件(jian)(jian)(jian)時(shi)應將原來(lai)資料保存，以備(bei)應急修復。

7、其它原因引(yin)起(qi)的不(bu)開機

手(shou)(shou)機(ji)(ji)(ji)不(bu)開機(ji)(ji)(ji)故(gu)障的(de)原(yuan)因還(huan)有很多，如液晶顯示屏不(bu)良、元件(特別是功放)短(duan)路(lu)等都(dou)有可能(neng)引(yin)(yin)起手(shou)(shou)機(ji)(ji)(ji)不(bu)開機(ji)(ji)(ji)，還(huan)有一(yi)些機(ji)(ji)(ji)型必須用(yong)到32.768kHz的(de)實(shi)時(shi)(shi)時(shi)(shi)鐘(zhong)作為碼片時(shi)(shi)鐘(zhong)信(xin)號(hao)和(he)睡眠時(shi)(shi)鐘(zhong)信(xin)號(hao)。若32.768kHz實(shi)時(shi)(shi)時(shi)(shi)鐘(zhong)不(bu)正(zheng)(zheng)常，也(ye)可能(neng)造成手(shou)(shou)機(ji)(ji)(ji)不(bu)開機(ji)(ji)(ji)。引(yin)(yin)起32.768kHz時(shi)(shi)鐘(zhong)不(bu)正(zheng)(zheng)常的(de)因素主要有時(shi)(shi)鐘(zhong)備用(yong)電池短(duan)路(lu)、32.768kHz時(shi)(shi)鐘(zhong)壞等。所以，在維修手(shou)(shou)機(ji)(ji)(ji)不(bu)開機(ji)(ji)(ji)時(shi)(shi)要結合具體電路(lu)具體分(fen)析，只要對手(shou)(shou)機(ji)(ji)(ji)的(de)原(yuan)理(li)理(li)解正(zheng)(zheng)確，思路(lu)清(qing)楚(chu)，不(bu)開機(ji)(ji)(ji)故(gu)障一(yi)般都(dou)可以排除。

手機開不了機如何解決

第一步：檢(jian)查電池是否有電，電池沒電了，手機(ji)(ji)自然(ran)沒有動力(li)去開機(ji)(ji)，如(ru)果(guo)怎么沖它都不會啟動的(de)話可以(yi)檢(jian)查一下充(chong)電器是否工作，接(jie)口是否損壞(huai)，用(yong)萬能充(chong)充(chong)電或檢(jian)測電量。

第二步(bu)：檢查電(dian)池(chi)(chi)是否損壞或者壽(shou)命已(yi)到，電(dian)池(chi)(chi)是消耗品，如果損壞或者使用不(bu)當導致電(dian)池(chi)(chi)過(guo)早損壞，可以(yi)嘗試換一塊電(dian)池(chi)(chi)，看一看是否可以(yi)啟(qi)動，如果問題解決，就需(xu)要更換電(dian)池(chi)(chi)。

第(di)三步：進水(shui)或刷(shua)機造(zao)成人為(wei)性損(sun)壞，這種(zhong)問題就是自身(shen)的原因了(le)，進水(shui)的話用吹(chui)(chui)風機吹(chui)(chui)一(yi)吹(chui)(chui)，拆機烘烤試一(yi)試，如(ru)果摔壞了(le)，內部零(ling)件(jian)損(sun)毀，就需要找維修(xiu)中心維修(xiu)了(le)。如(ru)果刷(shua)機造(zao)成無法(fa)開機，可(ke)以重新刷(shua)機嘗(chang)試恢(hui)復。

第(di)四步(bu)：如果基本(ben)的(de)(de)(de)方法都(dou)嘗(chang)試(shi)過了，還是(shi)無效的(de)(de)(de)話(hua)，就(jiu)只能去(qu)找(zhao)專業的(de)(de)(de)維修(xiu)中心來進行維修(xiu)，一(yi)般無法開機的(de)(de)(de)故(gu)障(zhang)自己不(bu)好解決，也可以(yi)試(shi)試(shi)搜索，看看有沒有適合你的(de)(de)(de)解決辦法。

手機開不了機怎么刷機

這里介紹最簡單(dan)的刷機(ji)方式：一種(zhong)是(shi)使(shi)用軟件下載ROM一鍵在線(xian)刷機(ji)！另外一種(zhong)是(shi)把ROM復制到SD卡(ka)里面然后進入(ru)recovery模式進行刷機(ji)！

1、用軟件(jian)一(yi)鍵在線刷機(ji)：

步驟一、這個需(xu)要安裝(zhuang)一款刷機(ji)(ji)軟件，這個軟件用的(de)人也(ye)非常的(de)多，還有(you)一件ROOT的(de)功能，刷機(ji)(ji)也(ye)需(xu)要ROOT。我(wo)們百度搜索(suo)“卓大師”，然后點擊下載安裝(zhuang)。

步驟二、然后我們在進(jin)入自(zi)己的(de)手機，點(dian)擊設(she)置，然后點(dian)擊開(kai)發人員選項。把USB調試(shi)打開(kai)。不同安卓版本的(de)手機打開(kai)的(de)位(wei)置也不一樣。自(zi)己在設(she)置里面找(zhao)找(zhao)就能看到(dao)。

步驟三、然后把手機(ji)(ji)(ji)用數據線連(lian)接(jie)好電腦，然后在打(da)開(kai)安(an)裝好的(de)卓大(da)師，卓大(da)師連(lian)接(jie)手機(ji)(ji)(ji)成功之后點擊(ji)ROM專(zhuan)區。這里(li)面會(hui)有很(hen)多手機(ji)(ji)(ji)的(de)刷機(ji)(ji)(ji)包。找一(yi)個適合自己機(ji)(ji)(ji)型(xing)的(de)刷機(ji)(ji)(ji)包下(xia)載。

步驟四、然(ran)后在按(an)照上圖的指示，點擊下(xia)面的下(xia)載狀態，打開之后就會看到(dao)ROM下(xia)載的位置。

步驟五、然后把你下載的(de)(de)ROM的(de)(de)壓縮文件復制出(chu)來。這個文件也可以直接復制到(dao)SD卡里(li)面(mian)進入recovery模式進行(xing)刷(shua)機(ji)，下載刷(shua)機(ji)包是最重要的(de)(de)。而且刷(shua)機(ji)包呀下載適合自己(ji)機(ji)型的(de)(de)，不然很容(rong)易(yi)變磚。

步驟六、下載(zai)完之(zhi)后(hou)會出現(xian)刷(shua)機(ji)的(de)按鈕(niu)，或者我們(men)進入導航里面的(de)一(yi)鍵(jian)刷(shua)機(ji)，選擇好(hao)刷(shua)機(ji)包(bao)點擊(ji)下一(yi)步，選擇是否備(bei)案，然(ran)后(hou)點擊(ji)下一(yi)步就坐等刷(shua)機(ji)成功提示(shi)啦(la)。

2、Recovery模式(shi)刷機方法(fa)：

步驟一、首先要確定你的手機是否刷入(ru)了(le)Recovery，如果沒有的需要(yao)刷入(ru)Recovery才能進(jin)入(ru)Recovery進(jin)行刷機。這里后續在為大(da)家演示刷入(ru)Recovery的方法。

步驟二、然后我們在(zai)進入設置把USB調(diao)(diao)試關(guan)閉掉，把刷機包復制(zhi)到你(ni)的(de)SD卡里面。關(guan)閉了USB調(diao)(diao)試才(cai)能(neng)讀取出來你(ni)的(de)手機內存(cun)。

步(bu)驟三、然后(hou)在進(jin)入(ru)(ru)recovery模(mo)(mo)式，進(jin)入(ru)(ru)recovery模(mo)(mo)式的(de)按(an)鍵(jian)有的(de)不一樣。有的(de)可以(yi)從電腦控制進(jin)入(ru)(ru)recovery模(mo)(mo)式，有的(de)按(an)著開機鍵(jian)+音量鍵(jian)就能進(jin)入(ru)(ru)recovery模(mo)(mo)式。進(jin)入(ru)(ru)recovery模(mo)(mo)式之后(hou)先清除(chu)所有的(de)數據。

步(bu)驟(zou)四、然后(hou)我(wo)們在(zai)清除手機(ji)里面的緩存(cun)數據，這些操(cao)作(zuo)上下就可以(yi)使用音(yin)量鍵(jian)調節。確定就是開機(ji)鍵(jian)。

步驟五、然后我們(men)在選擇刷(shua)機(ji)包，我們(men)是(shi)裝在SD卡上面的。所以從SD卡上面選擇刷(shua)機(ji)包。

步驟六、我們的(de)刷(shua)機(ji)包是(shi)ZIP文件(jian)，點擊(ji)(ji)從SD卡上面選擇(ze)ZIP文件(jian)。然后選擇(ze)刷(shua)機(ji)包的(de)文件(jian)點擊(ji)(ji)確定即可。

步驟七、刷機(ji)成功(gong)之后會有成功(gong)的提(ti)示，然后返回重啟系統(tong)即可進入(ru)你刷的新系統(tong)里面(mian)了。