HarmanKardon-AVR500RDS-avr-sm维修电路原理图.pdf
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1、RadioFans.CN 收音机爱 好者资料库8 ohms, Dolby Pro Logic100Hz-20kHz 150Hz-20kHzAll Channel Driven65W65WInput Shorted, IHF-A WTD65dB60dBRMS Output Power500RadioFans.CN 收音机爱 好者资料库500Eachprecautioninthismanualshouldbefollowedduringservicing.Components identified with the IEC symbolin the parts list are special s
2、ignificance to safety. When replacing a component identified with, use only the replacement parts designated, or parts with the same ratings or resistance, wattage, or voltage that are designated in theparts list in this manual. Leakage-current or resistance measurements must be made to determine th
3、at exposed parts are acceptablyinsulated from the supply circuit before retuming the product to the customer.Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are calledElectrostatically Sensitive (ES) Devices. Examples of typical ES devic
4、es are integrated circuits and some field effect transistors andsemiconductor chip components.The following techniques should be used to help reduce the incidence of component damage caused by static electricity.1. Immediately before handling any semiconductor component or semiconductor-equipped ass
5、embly, drain off any electrostatic charge onyour body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging wrist strap device,which should be removed for potential shock reasons prior to applying power to the unit under test.2. After removing an elect
6、rical assembly equipped with ES devices, place the assembly on a conductive surface such as aluminum foil, toprevent electrostatic charge build-up or exposure of the assembly.3. Use only a grounded-tip soldering iron to solder or unsolder ES devices.4. Use only an anti-static solder removal device.
7、Some solder removal devices not classified as anti-static can generate electrical chargessufficient to damage ES devices.5. Do not use freon-propelled chemicals. These can generate electrical change sufficient to damage ES devices.6. Do not remove a replacement ES device from its protective package
8、until immediately before you are ready to install it. (Most replacementES devices are packaged with leads electrically shorted together by conductive foam, aluminum foil or comparable conductive material.)7. Immediately before removing the protective material from the leads of a replacement ES devic
9、e, touch the protective material to thechassis or circuit assembly into which the device will be installed.Be sure no power is applied to the chassis or circuit, and observe all other safety precautions.8. Minimize bodily motions when handling unpackaged replacement ES devices. (Otherwise harmless m
10、otion such as the brushing togetheror your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity sufficient to damage an ES devices.CAUTION :- 4 -5001. lnspect all lead dress to make certain thatleads are not pinched or that hardware is notlodged between th
11、e chassis and other metalpartsintheunit.2. Be sure that any protective devices such asnonmetallic control knobs, insulating fish-papers,cabinetbacks,adjustmentandcompartment covers or shields, isolationresistor-capacitynetworks,mechanicalinsulators, etc. Which were removed for theservicingareproperl
12、yre-installed.Before returning the unit to the user, perform the following safety checks :3. Be sure that no shock hazard exists ; check for leakagecurrentusingSimpsonModel229LeakageTester,standardequipment item No. 21641, RCA Model WT540A or usealternate method as follows : Plug the power cord dire
13、ctlyInto a 120 volt AC receptacle (do not use an IsolationTransformer for this test). Using two clip leads, connect a1500ohms,10wattResistorparalleledbya0.15uFcapacitor,inserieswithallexposedmetalcabinetpartsandaknownearthground,suchas a water pipe or conduit. Use a VTVM or VOM with 1000 ohms per vo
14、lt, or higher sensitivity to measure the AC voltage drop across theresistor. (See diagram) Move the resistor connection to each exposed metal part having a return path to the chassis (antenna, metal, beperformedwiththe0.35voltRMSormoreisexcessiveandindicatesapotentialshockhazardwhichmustbecorrectedb
15、eforereturningtheunittotheowner.- 5 -500 SWITCHEDTOTAL 150W or 0.5A MAX.UNSWITCHEDTOTAL 100W or 1A MAX.(120V.60Hz)TOTAL 150W or 1.5A MAXMODEL NO. AVR 500HARMAN KARDONNORTHRIDGECALIFORNIA, USAFM(75 )AMANTENNAGNDAC 120V 60 HzINLROUTTAPEVIDEO2INOUTVIDEO1DVDCDSLFLCENTERCOAXIAL 2COAXIAL 1SRFRSUB WOOFERSL
16、SUB WOOFERFLMLSRCENTERFRMR6 CH. DIRECTMULTI OUTPRE OUTSERIAL NO.AC OUTLETSRIGHTSPEAKERS 8 OhmsLEFTSURROUNDOUTINTVMONITOROUTVIDEO 2INOUTDVDVIDEO 1OPTICAL2OPTICAL1OPTICAL1COAXIAL1DIGITAL OUTPUTMULTI INDIGITAL INPUTVIDEOREMOTECONTROLRIGHTSPEAKERS 8 OhmsSPEAKER 8 OhmLEFTCENTERFRONTCENTERVIDEO 1DIGITAL I
17、NPUT SERVICE PROCEDURETE S T E QUIP ME NT R E QUIR E D1) AM/ FM Signal generator2) Digital Multimeter3) Distortion lever meter2 . V F Ds e g me n t i l l u mi n a t i o n&t e x tThis set do not have VFD segment check function because lack of u-com memory sizeSo For your checking VFD states according
18、 to each functionPlease refer to owners manual process.1 . Al l Cl e a rThis service program can clear all memorized operations and functions.When the POWER ON, press the AM/ FM button while pressing the PRO LOGICbutton.After this, Preset memory will be set to these frequencies.FMAMVERSION120230RDSV
19、ERSION120230RDSP187.587.50P9520522P288.088.00P10600594P390.090.00P11610999P495.095.00P1210001395P598.098.00P1314001611P699.099.00P141500P7106.0106.00P151710P8108.0108.00AL IGNME NT P R OCE DUR E S1 . F M MONO. Di s t o r t i o na d j u s t me n tstep12Input Signal SourceConnectionSignal generatorout
20、put to FMantennaterminal.(750hm)SignalFrequency98MHzSource Signal Output Level andModulation1000uV/ m (60dBu)MONO 1kHz/Dev. 75kHzReceptionFrequency98MHz(P5)AdjustmentPointT804T805AdjustmentValue0mV0.5mV(R831)DistortionlevelatTAPE-OUTMi n i mu m4. F MS TE R E O S e p a r a t i o nAd j u s t me n tste
21、p12Input Signal SourceConnectionSignal generatoroutput to FMantennaterminal.(750hm)SignalFrequency98MHzSource Signal Output Level andModulationsame specification asdistortion adjustment.Input only L channelF M S TE R E Osame specification asdistortion adjustment.Input only R channelF M S TE R E ORec
22、eptionFrequency98MHz(P5)98MHz(P5)AdjustmentPointVR803VR803AdjustmentValueOutput levelat TAPE-OUTchannel RMi n i mu mOutput levelat TAPE-OUTchannel RMi n i mu m2 . F M MUTINGL E V E LADJ US TME NTTurn variable resistor VR801 and stop at position TUNED is not shown (not indicated), then again turn the
23、 variable resistor VR801 to theopposite revolution and stop at a position TUNED is shown.step12Input Signal SourceConnectionSignal generatoroutput to FMantennaterminal.(750hm)SignalFrequency98MHzSource Signal Output Level andModulation10uV/ m (20dBu)MONO 1kHz/Dev. 75kHzReceptionFrequency98MHz(P5)AUT
24、OSCANAdjustmentPointVR801Only confirmAdjustmentValueTUNEDindicate on VFDTUNEDindicate on VFD- 9-2stepInput Signal SourceConnectionSignalFrequencySource Signal Output Level andModulationReceptionFrequencyAdjustmentPointAdjustmentValue11395kHz(230,230RDS)1400kHz(120)CT8015. AM-Tr a c k i n gAd j u s t
25、 me n t ( MW)Signal Generatoroutput to transmissionloop antenna(standard required loop)5mV/ m(74dBu)400HzMOD.30%594kHz(230,230RDS)600kHz(120)594kHz(230,230RDS)600kHz(120)T801Output level(L or R)atTAPE-OUTMi n i mu mOutput level(L or R)atTAPE-OUTMi n i mu m6 . AMIFAd j u s t me n tstepInput Signal So
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