PhaseLinear-3000SII-pre-sm2 维修电路原理图.pdf

上传人:cc518 文档编号:154868 上传时间:2022-07-09 格式:PDF 页数:39 大小:20.76MB
下载 相关 举报
PhaseLinear-3000SII-pre-sm2 维修电路原理图.pdf_第1页
第1页 / 共39页
PhaseLinear-3000SII-pre-sm2 维修电路原理图.pdf_第2页
第2页 / 共39页
PhaseLinear-3000SII-pre-sm2 维修电路原理图.pdf_第3页
第3页 / 共39页
亲,该文档总共39页,到这儿已超出免费预览范围,如果喜欢就下载吧!
资源描述

《PhaseLinear-3000SII-pre-sm2 维修电路原理图.pdf》由会员分享,可在线阅读,更多相关《PhaseLinear-3000SII-pre-sm2 维修电路原理图.pdf(39页珍藏版)》请在收音机爱好者资料库上搜索。

1、RadioFans.CN 收音机爱 好者资料库RadioFans.CN 收音机爱 好者资料库INTERNATIONAL20121 48th Avenue West, LYNNWOOD, WASHINGTON 98036 U.S.A.Telephone: (206)n4-3571ServiceBulletin15August1980Subject:Model 3000SeriesIIIntermittentdistortionandchanneldrop-outCondensedtroubleshootingandrepairprocedureDuetothefactthatmany 3000S

2、eriesIIpreampshavebeencomingbackseveraltimeswiththesameproblem,itisevidentthatthepropercorrectiveactionhasnotbeentaken.Thisbulletinisprovidedtoassistthetechnicianinexpiditingandassuringalastingrepair.fig.1SlOESHOWNlI.JIIOurexperiencehasshownthatthesevenrelays(K7-9&KIO-13)circledinfig.1havethehighest

3、failurerate.Theseshouldbereplacedautomaticallywiththenewstylerelay,partno.129-0064(seesvc.bulletin10July1980).Installrelayregulatoraspersvc.bulletin#5199.L.;,J-_.0)iee:.QWIP.-5V.aD,IL:J,.c,(t;CorrectiveAction:Detection:Driveinputswithanappropriatesignallevel(phono5mV,highlevel150mV200-500Hz.).Monito

4、rmainoutputsbothchannels.Selectfunction.Taprelaythatselectsinputfunctionwithproblem.Watchforpartialorcompletedrop-outofoneorbothchannels.(Pleasenotethatevena goodrelaywilldrop-outmomentarilywhenbeaten.)Repeatdetectionprocessforallselectorinputs.Seattle-First National Bank, International Banking Divi

5、sion,P.O. Box 3586, Seattle, Washington, 98124, U.S.A.Toeaseremovaloftherelay,letthepinheatcompletly(thisisaplatedthroughtheholeboard).Removesolderwithavacuum/suctiondesolderingdevice,solderwickwillnotdrawsolderoutofthehole.Wiggle(thatsright,wiggle)pinswithneedlenoseplierstobreakitfreefromhole.Becarefulwhenremovingtherelaytoinsurethatallpinsareloosefromtheboard,aslandtracescanbetornoffofthecomponentsideoftheboardquiteeasily.Ifcustomercomplainsofhighbackgroundnoiserefertosvc.bulletin3000IIlineampsinmod.ABLE ADDRESS: PHASE -Seattle, Wa.TWX #9104492851

展开阅读全文
相关资源
猜你喜欢
相关搜索
资源标签

当前位置:首页 > 功放/音响/收扩 > PhaseLinear

copyright@ 2008-2025 收音机爱好者资料库 版权所有
备案编号:鄂ICP备16009402-5号