Akai-HTA1150-hts-sm维修电路原理图.pdf

SERVICE MANUALModel:HTA1150HOME THEATER SYSTEMwww.akai.ruRadioFans.CN 收音机爱 好者资料库CONTENTS1 SERVICE MANUAL1. Safety precautions.22. Location of users controls.33. Connecting to equipment.44. Trouble shooting guide.55. Internal block diagram of ics.76. Schematic diagram.20RadioFans.CN 收音机爱 好者资料库1. SAFETY PRECAUTIONS2NoPower supply: This speaker can only usethe type of power supply as specified inthe instruction manual or marked on themaster speaker.Power line protection: Make sure to avoidpower line being trampled, pulled orsqueezed by heavy objects. In particular,be sure to hold the plug when pulling the power line from the socket. Never pull onthe power line. besides, keep the power lineaway from hot objects.1.2.3.4.5.6.7.8.Removing cabinet: In case of speakerfailure or problems due to improperuse, dont dismantle the unit to repairor check by yourself. Please turn offthe power and use after checked byspecialists to avoid causing personalaccident.Appearance cleaning: Dont usevolatile solutions to clean the speakerto avoid damaging the appearance.Please cut off the power: If you dontuse the sound system for a long time,please remove the cable wire ordisconnect the power to ensure thespeaker safety and household safety.PRECAUTIONS:Cord polarity: The speaker cord must becorrectly connected as per marking on thefunction panel. andMust havecorrect polarity so maximize the inherentquality of the speaker. Otherwise, normalfunction and output will be affected.Ventilation: This speaker has goodadaptability to the environment, but payattention to the environmental ventilationduring long periods of work.Water and moisture: Keep the sound boxaway from rain, water spray, water splashand wet environment, such as bath,kitchen, water basin, washing basin, dampbasement, swimming pool, etc.+- SERVICE MANUALRadioFans.CN 收音机爱 好者资料库2. LOCATION OF USERS CONTROLS3BACK PANEL DESCRIPTION:FRONT PANEL INSTRUCTION : SERVICE MANUALREARRIGHTREARRIGHTS.W.S.R.F.R.RC.E.S.W.S.R.F.R.RC.E.DVD(5.1CH)DVD(5.1CH)S.L.F.L.S.L.F.L.FUSE T1.6A/250VFUSE T1.6A/250VLAUXLAUXPOWERPOWERONONOFFOFFFRONTRIGHTFRONTRIGHTFR.LT.FR.LT.CENTERCENTERREARLEFTREARLEFTPOWER FUSE T1.6A/250V SPEAKER OUTPUT F.L. SPEAKER OUTPUT F.R. SPEAKER OUTPUT S.R. SPEAKER OUTPUT C.E. SPEAKER OUTPUT S.L.DVD C.E.INPUTDVD S.R./S.L.INPUTDVD F.R./F .L.INPUTDVD S.W.INPUTAUX L/R INPUTPOWER SWITCH1213INPUTPRESETMUTESOUNDSW.VOLC.VOLS.VOLM.VOL1213 REMOTE CONTROL INSTRUCTION :STANDBYWorking /standby indicatorAUX signal input indicator2AUXDVD signal input indicator35.1CHDVDNORMAL sound field indicator4NORMALPro.logic sound field indicator5PRO.LOGICVolume increase indicator6UPSound field selectionINPUTSOURCESignal input selection9SPEAKERCHANNELSMaster volume in increase selectionVOLUMEUPMaster volume decrease selectionVOLUMEDOWNVolume decrease indicator7DOWNPower switch button(standby) switchon or off for waiting or on condition8ONSTANDBYAUX5.1CHDVDNORMALPRO.LOGICUPDOWNONSTANDBYINPUTSOURCESPEAKERCHANNELSVOLUMEUPVOLUMEDOWN891110121RadioFans.CN 收音机爱 好者资料库3. CONNECTING TO EQUIPMENT4SYSTEM CONNECTION: SERVICE MANUALREARRIGHTREARRIGHTS.W.S.R.F.R.RC.E.S.W.S.R.F.R.RC.E.DVD(5.1CH)DVD(5.1CH)S.L.S.L.F.L.F.L.FUSE T1.6A/250VFUSE T1.6A/250VL LAUXAUXPOWERPOWERONONOFFOFFFRONTRIGHTFRONTRIGHTFR.LT.FR.LT.CENTERCENTERREARLEFTREARLEFTCenterFront leftRear leftRear right,RLCDFRSRCENSWFLSLDVD playerFront RightRadioFans.CN 收音机爱 好者资料库No soundNo soundNo sound in AC-3./5.1NORMAL statesound is ok in AC -3 state,but no sound in AUX stereocheck whether the vice-levelI alternating voltage8Vof transformer is ok or not.replace thetransformercheck whether the 1IC4052power voltage5.1V is ok or not.check whether the currenttransfer output voltsd. is ok or not.check whether thecapacitor 2CD3,IC 7805 are ok or not.judge whether the 1IC10 4558,is ok or not by inputing signalreplace 1IC104558,check whether the powervoltage5.1V of 1IC3,1IC4,4053 are ok or not.check whetherthe 2CD4are ok ornot.NOTNOTNOTNOTNOTOKOKOKTROUBLE SHOOTING AND RESOLUTION124. TROUBLE SHOOTING GUIDE SERVICE MANUAL5Check whwther 2CD11,2CD12 are ok or notreplace 2CD11,2CD12NOTjudge whether 1C3,-IC4are ok or notNOTOKreplace IC3,IC4check whether thecapacitor 2CD3,IC 7805 are ok or not.RadioFans.CN 收音机爱 好者资料库ErrorPossible reasonObivatingNo soundThe power plug is not exactly inserted.The connection of output and input is not wellThe input format is not rightThe volume control be settled in the minimumRest estateInsert the plug in right placeConnect the output and inputcablesAdjust the volume4. TROUBLE SHOOTING GUIDETROUBLE SHOOTING AND RESOLUTIONdried machinecheck whether the fuse 1.6A is OK or not.replace the fuse 1.6A.check whether there is 230V alternating current of the transformer in elementary.check the plug,powerbuttonare all right or not.check whether there is 14V*2,11V*2 8.5V alternating voltage output in the transformer vice-level 2 or not.replace the transformer.BURNED OUTOKOKNOTNOT456 SERVICE MANUALRadioFans.CN 收音机爱 好者资料库5. 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