具(ju)有杜(du)比環(huan)(huan)繞(rao)聲(sheng)(sheng)(sheng)解析功能的(de)(de)AV放大器，若(ruo)在(zai)杜(du)比環(huan)(huan)繞(rao)聲(sheng)(sheng)(sheng)狀(zhuang)態(tai)肘各聲(sheng)(sheng)(sheng)道均(jun)無聲(sheng)(sheng)(sheng)而直(zhi)通(tong)狀(zhuang)態(tai)下主(zhu)聲(sheng)(sheng)(sheng)道聲(sheng)(sheng)(sheng)音正常(chang)，在(zai)電源電路(lu)正常(chang)的(de)(de)情況下，通(tong)常(chang)是杜(du)比環(huan)(huan)繞(rao)聲(sheng)(sheng)(sheng)解析電路(lu)或系統控(kong)制(zhi)電路(lu)工(gong)作(zuo)不(bu)正常(chang)。若(ruo)在(zai)環(huan)(huan)繞(rao)聲(sheng)(sheng)(sheng)和直(zhi)通(tong)模式下各聲(sheng)(sheng)(sheng)道均(jun)無聲(sheng)(sheng)(sheng)，應檢查系統控(kong)制(zhi)電路(lu)、信(xin)號選擇電路(lu)和總音量控(kong)制(zhi)電路(lu)。

地址(zhi)： (總部) 廣東(dong)廣州市越秀區中山(shan)一路48號

本(ben)公司是(shi)美國(guo)(guo)麥景圖MCINTOSH音(yin)響功(gong)放的(de)維(wei)(wei)(wei)修(xiu)(xiu)中(zhong)心(xin)(xin)，維(wei)(wei)(wei)修(xiu)(xiu)各種復雜的(de)功(gong)放問題、本(ben)維(wei)(wei)(wei)修(xiu)(xiu)中(zhong)心(xin)(xin)被評為服務網(wang)點，中(zhong)國(guo)(guo)家(jia)電維(wei)(wei)(wei)修(xiu)(xiu)協(xie)會(hui)理事單(dan)位，中(zhong)國(guo)(guo)模范服務維(wei)(wei)(wei)修(xiu)(xiu)站，麥景圖 Mcintosh原廠配件，機(ji)器修(xiu)(xiu)復后廠房會(hui)進(jin)行調(diao)音(yin)測試(shi)，以保證故障的(de)排除(chu)和音(yin)效的(de)。歡迎郵寄或上門。

CD機常見故障：

1.光(guang)頭(tou)不(bu)發光(guang)，（觀察激光(guang)時(shi)，只能光(guang)頭(tou)透(tou)鏡(jing)，不(bu)能正視）。

2.聽到光頭(tou)三次微(wei)小的'嗒嗒'聲后(hou)，CD不轉動。

3.CD反復轉動，但CD目錄信息（比如總曲(qu)目數）無(wu)法獲(huo)取，不能(neng)進入下一過程(cheng)，這個過程(cheng)，若(ruo)CD機(ji)有故障，一般顯(xian)(xian)示(shi)(shi)“No Disk“信息而(er)結束,若(ruo)CD機(ji)正(zheng)常，則讀取目錄信息，顯(xian)(xian)示(shi)(shi)出總曲(qu)目數，等待用戶按播放(fang)鍵(jian)播放(fang)CD。

放大器的噪聲(sheng)(sheng)(sheng)(sheng)(sheng)有(you)交(jiao)(jiao)流聲(sheng)(sheng)(sheng)(sheng)(sheng)、爆裂聲(sheng)(sheng)(sheng)(sheng)(sheng)、感應(ying)噪聲(sheng)(sheng)(sheng)(sheng)(sheng)和白噪聲(sheng)(sheng)(sheng)(sheng)(sheng)等。檢修時，應(ying)先判斷(duan)(duan)噪聲(sheng)(sheng)(sheng)(sheng)(sheng)來(lai)自(zi)于前(qian)(qian)級(ji)還是(shi)(shi)(shi)來(lai)自(zi)于后級(ji)電(dian)(dian)(dian)(dian)路(lu)(lu)。可把(ba)前(qian)(qian)、后級(ji)的信(xin)號連接插頭(tou)取下，若噪聲(sheng)(sheng)(sheng)(sheng)(sheng)明(ming)功放顯變小(xiao)，說明(ming)故障在(zai)(zai)前(qian)(qian)級(ji)電(dian)(dian)(dian)(dian)路(lu)(lu)；反之，故障在(zai)(zai)后級(ji)電(dian)(dian)(dian)(dian)路(lu)(lu)。交(jiao)(jiao)流聲(sheng)(sheng)(sheng)(sheng)(sheng)是(shi)(shi)(shi)指聽(ting)感低沉、單調而(er)穩定(ding)的100Hz交(jiao)(jiao)流哼(heng)聲(sheng)(sheng)(sheng)(sheng)(sheng)，主要是(shi)(shi)(shi)電(dian)(dian)(dian)(dian)源(yuan)部(bu)分濾波(bo)不良(liang)所(suo)致，應(ying)著重(zhong)檢查電(dian)(dian)(dian)(dian)源(yuan)整流、濾波(bo)和穩壓元件有(you)無(wu)損壞(huai)。爆裂聲(sheng)(sheng)(sheng)(sheng)(sheng)是(shi)(shi)(shi)指間(jian)斷(duan)(duan)的“劈啪”、“咔(ka)咔(ka)”聲(sheng)(sheng)(sheng)(sheng)(sheng)，在(zai)(zai)前(qian)(qian)級(ji)電(dian)(dian)(dian)(dian)路(lu)(lu)中，應(ying)檢查信(xin)號輸(shu)入插頭(tou)與插座(zuo)、轉換開(kai)關、電(dian)(dian)(dian)(dian)位器等是(shi)(shi)(shi)否(fou)接觸(chu)不良(liang)，耦合電(dian)(dian)(dian)(dian)容有(you)無(wu)虛焊、漏電(dian)(dian)(dian)(dian)等。后級(ji)放大電(dian)(dian)(dian)(dian)路(lu)(lu)應(ying)檢查繼電(dian)(dian)(dian)(dian)器觸(chu)點(dian)是(shi)(shi)(shi)否(fou)氧化、輸(shu)入耦合電(dian)(dian)(dian)(dian)容有(you)無(wu)漏電(dian)(dian)(dian)(dian)或接觸(chu)不良(liang)。另外(wai)，后級(ji)電(dian)(dian)(dian)(dian)路(lu)(lu)中的差分輸(shu)入管(guan)或恒流管(guan)軟擊穿，也(ye)會產生(sheng)類似電(dian)(dian)(dian)(dian)火(huo)花(hua)的“咔(ka)咔(ka)”噪聲(sheng)(sheng)(sheng)(sheng)(sheng)。

美國麥景圖MCINTOSH維修中心以的技術、的服務受到了廣大客戶的認同和稱贊。目前，本公司具有的機械設備和技術人員，并經過各嚴格培訓，審批合格上崗。不但具有豐富的現場設計安裝和運行實踐經驗，還具備良好的職業素質和高度責任感。