Sony-TAAX44-int-sm 维修电路原理图.pdf

GENERALSystem:Power Requirements:Power Consumption:AC Outlets:Dimensions:US ModelCanadian ModelAEP ModelUK ModelE ModelINTEGRATED STEREO AMPLIFIERSPECIFICATIONSPreamplifier section: low-noise equalizer amp.; ASP tone controlPower amplifier section: complementary SEPP OCL poweramplifier with all stages direct coupledUS, Canadian model: 120 V ac, 60 HzAEP model: 220 V ac V ac adjustable byauthorized Sony personnel), HzUK model: 240 V ac V ac adjustable byauthorized Sony personnel), HzE model: 120, 220 or 240 V ac adjustable, HzUS, AEP model: 100 wattsCanadian model: 155 wattsUK model: 270 wattsE model: 100 wattsAEP, UK model: 3 switched, total 100 wattsmax.US, Canadian model:Two switched (total 100 watts)One unswitched watts)E model: 2 switched, total 100 watts max.1 unswitched, 100 watts max.Approx. 430 80 x 290 mm (w/h/d) 7 11 inches)including projecting parts and controlsWeight:Approx. 5.6 kg Ibs 6 netApprox. 6 kg (13 lbs 4 in shipping cartonAMPLIFIER SECTIONPOWER OUTPUT AND TOTAL HARMONICDISTORTION (US, Canadian model)With 8 ohm loads, both channels driven,from 20 20,000 Hz; rated 40 watts per chan-nel minimum RMS power, with no more than0.008% total harmonic distortion from 250milliwatts to rated output. Continued on page 2 SAFETY-RELATED COMPONENT WARNING!COMPONENTS IDENTIFIED BY SHADING AND MARKON THE SCHEMATIC DIAGRAMS, EXPLODEDVIEWS AND IN THE PARTS LIST ARE CRITICAL TOSAFE OPERATION.REPLACE THESE COMPONENTSWITH SONY PARTS WHOSE PART NUMBERS APPEARATTENTION AU COMPOSANT AYANT RAPPORTAS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS LA PUBLISHED BY SONY.LES COMPOSANTS IDENTIFIES PAR UNE TRAME ETU N E M A R Q U E SUR LES MATIQUES, LES VUES ET LA DES SONT CRITIQUES POUR LA DEFONCTIONNEMENT. NE REMPLACER CES S O N YSANTS QUE PAR DES SONY DONT LES SONT DANS CE MANUEL OU DANSLES PAR SONY.SERVICE MANUALRadioFans.CN 收音机爱 好者资料库Continuous RMSPower Output(Lea than 0.688%THD, both channelsdriven simultaneous-ly)(AEP, UK, model):Power Bandwidth(IHF):Dynamic Headroom:Harmonic Distortion:Intermodulation (IM)Distortion 1):Frequency Response:Residual Noise:Damping Factor:At 20 Hz 20 40 + 40 watts (8 ohms)At 1 44 + 44 watts (8 ohms)According to DIN 4550040 + 40 watts (8 ohms)5 Hz 45 1.8 (78 IHF)Less than 0.008% at rated outputLess than 0.008% at rated outputPHONO: equalization curve TUNERTAPE 1.2Less than (8 ohms, network A)50 (8 ohms, 1 Inputs:Maximum SIN capability * outputs:Voltage 150 Impedance 4.7 k ohmsSPEAKER A, BAccepts speakers of 8 16 ohms.HEADPHONESAccepts low and high impedance head-phones.Tone Controls:BASS at 100 Hz (turnover freq. 500 Hz)TREBLE at 10 (turnover freq. 2 Subsonic Filter:6 dB/octave attenuation below 15 HzHigh Filter:6 attenuation above 9 Muting:-20dB FEATURESThe TA-AX44 integrated stereo amplifier incorporates a number oftechnical breakthroughs in circuit design. On its attractive frontpanel most of the controls and switches are “touch pad” switchesand the tone, filter and volume settings are shown by fluorescentdisplays.HIGHLIGHTS OF THE CIRCUITASP (Audio Signal Processor) IC in the preamplifier stageSony has developed a new audio device, called the Audio SignalProcessor which can digitally control the tone, filter and volumesettings. The ASP also permits electronic program source tion. Mechanical controls and switches have been practicallyeliminated from the front panel. In combination with a microcom-puter and a non-volatile memory IC, the ASP IC offers greater flex-ibility an Acoustic Function, an ability to store and recall twosets of tonal adjustments.Legato linear power amplifier stageThe operation of the power amplifier stage is stable without anyobservable distortion up through the higher frequencies. We callthis power amp “Legato Linear” because its switching distortion isvery low and its output waveform smooth.Simple, straight signal path layoutA heat-pipe cooling system and the ASP layout near the inputand output terminals minimize wiring losses and allow low distor-tion OPERATING VOLTAGEBefore connecting the unit to the power source, check that theoperating voltage of your unit is the same as the local power linevoltage.The Continental European model (AEP model) operates on 220 Vac (or 240 V ac adjustable by authorized Sony personnel).The United Kingdom model (UK model) operates on 240 V ac (or220 V ac adjustable by authorized Sony personnel).The model for other countries (E model) operates on either 120,220 or 240 V ac. The voltage selector is located on the rearpanel. If the selector must be reset, disconnect the ac powercord and turn the selector with a coin so that the arrow markof the selector points to the proper voltage figure.The US, Canadian model operates on 120 V ac.Wireless remote control operationUsing the optional RM-44 system remote controller, various opera.tions power program selection, acoustic setting selec-tion, muting on/off and volume adjustment can be remotely con-trolled.RadioFans.CN 收音机爱 好者资料库PRECAUTIONSOn safety?Check that the operating voltage of your unit is identical thevoltage of your local power supply.?Should any liquid or solid object fall into the cabinet, unplug theunit and have it checked by qualified personnel before operating any further.?Unplug the unit from the wall outlet if it is not to be used for anextended period of time. To disconnect the cord, pull it out bygrasping the plug. Never pull the cord itself.On installation?Do not install the in a location near heat sources such asradiators or air ducts, or in a place subject to direct sunlight, ex-cessive dust, mechanical vibration or shock.?Good air circula ion is essential to prevent internal heat build-upin the unit. Place the unit in the location with adequate air circula-tion. Do not place the unit on a soft surface, such as a rug thatwould block the ven ilation holes on the bottom.?DO not place anything on top of the cabinet. The top ventilationholes must be unobstructed for the proper opera ion of the unit andto prolong the life of its components.On operation?Before making program source connections, be sure to turn thepower switch off and unplug the unit.?Do not attempt to test the protection circuits by blocking the ven-tilation holes or connec ing improper loads.?When the unit is not used, turn the power off, to conserve energyand to extend the useful life of your unit.On cleaning the cabinetClean the cabinet, panel and controls with a soft cloth lightlymoistened with mild detergent solution. Do not use any type ofabrasive pad, scouring powder or solvent such as alcohol or zine.On repackingDo not throw away the carton and the packing material. It makes anideal container to transport the unit in. When shipping the unit forrepair work or to another location, repack it as illustrated on thecarton box.MODEL IDENTIFICATION Specification Label model1MODEL NO. TA-AX44INTEGRATED STEREO AMPLIFIERAC ?ISERIAL NO.L_MADE IN JAPANUS, Canadian modelMODEL NO. TA-AX44INTEGRATED STEREO AMPLIFIER clSERIAL NO.MADE IN JAPANUK modelMODEL NO. TA-AX44INTEGRATED STEREO AMPLIFIER 270WclclSERIAL NO,MADE IN JAPANLOCATION AND FUNCTION OF CONTROLSFluorescent displayVOLUMEMUTING TAPE COPY TAPE MONITORPOWER switch(See below. Jcontrol button switchswitchswitchesHEADPHONES jackBASS and TREBLEtone control buttonsSUBSONICfilter switch switchesMEMORYswitchFluorescent display sectionVOL UME indicator, MUTING indicator BALANCE indicatorSPEAKER A andPHONO inputsTUNER inputsSPEAKER B terminalsAC OUTLETSRemote control connectorGround terminalCORDER 2 jacksTAPE inputs and REC OUT (recording output) jacksDA D/A (auxiliary) inputsORDER 1 jacksTAPE inputs and REC OUT (recording output) jacksThe Photo: AEP, UK modelAC outletsThese are used to power other audio components whose powerconsumption is less than the wattage indicated below the acoutlet.The SWITCHED outlet is controlled by the front panel POWER swit-ch.The UNSWITCHED outlet (only on the E model) is not controlledby the POWER switch.Do not connect any electrical home appliance such as an electriciron, fan, TV or other high-wattage equipment to these ac outlets.The four groups of ac power cord plugs and ac outlets on youramplifier rear panel are illustrated belowGroup A Group E model)AC outletSWITCHED TOTAL100 W MAXSWITCHED TOTALThe wires in this mains lead adaptor are coloured in accor-dance with the following code.UNSWITCHEDSWITCHED100 W MAX TOTAL 100 W on the can supply power to the Tuner ST-JX44L. ST-JX-22LTurntable PS-LX5Tape deck TC-FX44For the Customers in the United KingdomThe mains lead plug of your apparatus is a type especiallydesigned to be connected only to the Sony RM-44 system remotecontroller. The remote controller has a receptacle on the rear toreceive this plug to supply mains power to other components ofyour audio system.To connect the apparatus directly to a mains power point in yourhouse, firmly insert the plug into the supplied mains leadadaptor. leadmains lead adaptor-CAUTIONConnect the plug only to the mains outlet on the com-ponent mentioned above or to the supplied mains lead adap-tor.-ImportantBlue NeutralBrown LiveAs the of the wires in the mains lead adaptor of thisapparatus may not correspond with the coloured markingsidentifying the terminals in your plug, proceed as follows The wire which is coloured blue must be connected to the ter-minal which is marked with the letter N or coloured black.The wire which is coloured brown must be connected to theterminal which is marked with the letter L or coloured red.* *Use the plug adaptor to connect the an outlet the houseHowever. when power among the Sony components. adaptor not neededOPERATIONTO GET SOUNDAdjust the volumeVOLUMEWhen the power is turned on, the volume be reset to then be up slowly to theprevious setting.Press either end of the VOLUME control button when the volume adjusted to your preference.Select the speakersystem used.A-SPEAKERS-BTo speaker system A. depress A To drive speaker system B depress B To drive both speaker systems depress A and B For headphone listening only keep both released-Important points to remember?The MONITOR switches have priority over the FUNCTIONswitches (PHONO, TUNER and DADIAUX) when they areengaged at the same time.?To disengage he MONITOR switch, press the same switchagain.?The TAPE COPY switch is a push-on/push-off switch, anddoes not affect any other FUNCTION or MONITOR switch.Select the program source and start the program.MONITORFUNCTIONFor the record program.For the tuner program.For sources connected tothe For the taped programconnected to the TAPE RECORDER 1 TAPE For the taped program connected to the TAPE RECORDER 2 TAPE SOUND ADJUSTMENTSStereo balanceThe feeling of direction and depth that sound pro-duces is greatly diminished if the volume levels of the two channelsare not balanced to produce a well-defined stereo image.Adjust the BALANCE control buttons as necessary. Proper settingof the BALANCE control will vary with different program sourcesbecause of differences in recording levels. Stereo balance is affected by the acoustics of the listening room, which itself isdependent on the shape and size of the room, the of therooms furniture, and the carpet and wall coverings.ToneUse the tone control buttons to adjust the tone to the the listening the program When listening to a program source with noise,press the HI-FILTER switch.If the woofer cones of the speaker system move a lot when awarped record is played, press the SUBSONIC filter switch toreduce the very low-frequency distortion caused by record warp.The manipulation of the tone control section does not interrupt thesignal path in the amplifier. However, its overuse may adversely af-fect amplifier tone quality.TAPE RECORDING AND TAPE COPYTO RECORD Select the program to be recorded with the FUNCTION switches.Start the program and set the tape recorder in the record mode.Record The filters, and tone and volume settings have no effect on record-ing.Monitoring of a tape recorderIf your tape recorder has separate record and playback heads, youcan monitor the recording results.When the tape recorder used for recording is connected to theTAPE RECORDER 1 REC OUT jacks, press the TAPE 1 switch andyou can monitor the recording results. Press the TAPE 1 switchagain to disengage, and the source sound will be heard. Be sure tokeep the monitor switch of the tape recorder in the TAPE position.TO COPYIf you have two tape recorders, you can copy a taped program fromtape recorder 1 (connected to TAPE RECORDER 1 TAPE inputs) totape recorder 2 (connected to TAPE RECORDER 2 REC OUT out-puts). Tape copy from tape recorder 2 to tape recorder 1 cannot bemade.You can copy a tape while listening to a record or a broadcast. Insert the recorded tape into the tape recorder 1 and a blank tapeinto the tape recorder 2. Press the TAPE COPY switch. Adjust the recording level of tape recorder 2.Start the playback of tape recorder 1 and the recording of taperecorder 2. Copying will begin.ape deck 1 (for playback)Tape deck 2 (for recordingTo listen to a program while the tape is being copied For the playback sound of tape recorder 1 press the TAPE 1switch.For a program source connected to the PHONO, TUNER or inputs press the appropriate FUNCTION switch.REMOTE CONTROL OPERATION WITH ANOPTIONAL REMOTE CONTROLLERThe optional RM-44 system remote controller controls he followingfunctions of the amplifier: power on/off, program selection,acoustic setting selection, muting on/off, and volume adjustment.This remote controller, with its infrared ray sensor, can control con-nected components by an infrared ray transmitted from he RM-44Cremote commander supplied with the system remote controller.For connections and opera ions, refer to the system remote con-trollers instruction manual.TunerCassette deckTurntableInfrared-ray commandRM-44