Jvc-RX-5001-VGD-Service-Manual电路原理图.pdf

SERVICE MANUALAUDIO/VIDEO CONTROL RECEIVERNo.20883Nov. 2000COPYRIGHT 2000 VICTOR COMPANY OF JAPAN, LTD.RX-5000VBKRX-5001VGDUFUSChinaSingaporeArea SuffixContentsSafety precautions - 1-2Disassembly method - 1-3Adjustment method - 1-5Description of major ICs - 1-6Internal connections forFL display tube - 1-1541741RM-SR558U REMOTE CONTROLTAPE/MDFM/AMVCRDVDSOUNDCONTROLSLEEP8321 5SURROUNDTESTDELAY654EFFECT CENTER +5987/P REAR L +5TV VCR AUDIOCD+1010 REAR R +MENUENT5+TV CHTV/VIDEOPHONOCD-DISC +TV VOL.DVD MULTIONE TOUCHOPERATIONVCR CH+MUTING VOLUME£POWERRX-5000V AUDIO/VIDEO CONTROL RECEIVERSTANDBYPHONESSPEAKERS12ADJUSTBASS BOOSTSETTINGMEMORYDVD MULTICDDVDPHONOVCRTAPE/MDSOURCE NAMEFM SURROUND MULTI CURSORINPUT ATT.ONE TOUCH OPERATIONAMMASTER VOLUME +OFF_ ONPOWERRX-5000VBKRX-5001VGDRX-5000VBK/RX-5001VGD1-2Safety Precautions1. This design of this product contains special hardware and many circuits and components specially for safety purposes. For continued protection, no changes should be made to the original design unless authorized in writing by the manufacturer. Replacement parts must be identical to those used in the original circuits. Services should be performed by qualified personnel only.2. Alterations of the design or circuitry of the product should not be made. Any design alterations of the product should not be made. Any design alterations or additions will void the manufacturers warranty and will further relieve the manufacture of responsibility for personal injury or property damage resulting therefrom.3. Many electrical and mechanical parts in the products have special safety-related characteristics. These characteristics are often not evident from visual inspection nor can the protection afforded by them necessarily be obtained by using replacement components rated for higher voltage, wattage, etc. Replacement parts which have these special safety characteristics are identified in the Parts List of Service Manual. Electrical components having such features are identified by shading on the schematics and by ( ) on the Parts List in the Service Manual. The use of a substitute replacement which does not have the same safety characteristics as the recommended replacement parts shown in the Parts List of Service Manual may create shock, fire, or other hazards.4. The leads in the products are routed and dressed with ties, clamps, tubings, barriers and the like to be separated from live parts, high temperature parts, moving parts and/or sharp edges for the prevention of electric shock and fire hazard. When service is required, the original lead routing and dress should be observed, and it should be confirmed that they have been returned to normal, after re-assembling.5. Leakage currnet check (Electrical shock hazard testing)After re-assembling the product, always perform an isolation check on the exposed metal parts of the product (antenna terminals, knobs, metal cabinet, screw heads, headphone jack, control shafts, etc.) to be sure the product is safe to operate without danger of electrical shock.Do not use a line isolation transformer during this check.Plug the AC line cord directly into the AC outlet. Using a “Leakage Current Tester“, measure the leakage current from each exposed metal parts of the cabinet , particularly any exposed metal part having a return path to the chassis, to a known good earth ground. Any leakage current must not exceed 0.5mA AC (r.m.s.)Alternate check methodPlug the AC line cord directly into the AC outlet. Use an AC voltmeter having, 1,000 ohms per volt or more sensitivity in the following manner. Connect a 1,500 10W resistor paralleled by a 0.15 F AC-type capacitor between an exposed metal part and a known good earth ground.Measure the AC voltage across the resistor with the AC voltmeter. Move the resistor connection to eachexposed metal part, particularly any exposed metal part having a return path to the chassis, and meausre the AC voltage across the resistor. Now, reverse the plug in the AC outlet and repeat each measurement. voltage measured Any must not exceed 0.75 V AC (r.m.s.). This corresponds to 0.5 mA AC (r.m.s.). Warning1. This equipment has been designed and manufactured to meet international safety standards.2. It is the legal responsibility of the repairer to ensure that these safety standards are maintained.3. Repairs must be made in accordance with the relevant safety standards.4. It is essential that safety critical components are replaced by approved parts.5. If mains voltage selector is provided, check setting for local voltage.Good earth groundPlace this probe on each exposedmetal part.AC VOLTMETER(Having 1000 ohms/volts,or more sensitivity)1500 10W0.15 F AC TYPE!CAUTIONBurrs formed during molding may be left over on some parts of the chassis. Therefore, pay attention to such burrs in the case of preforming repair of this system.http:/getMANUAL.comRX-5000VBK/RX-5001VGD1-3Disassembly methodRemoving the top cover (See Fig.1)1. Remove 4 screws “A“ on both sides of the top coverand 3 screws “B“ on the rear side. 2. Lift the back of the top cover spreading both sidesto remove.Removing the front panel assembly (See Fig.2,3)1. Remove the top cover.2. Remove 4 screws “C“ on the bottom side and 3 screws“D“ on the top side.3. Disconnect the wire CN811 on the main board.4. Disconnect the wire CN314 on the audio & sourceselector board.5. Remove the front panel assembly.Removing the rear panel (See Fig.4)1. Remove the top cover.2. Remove 21 screws “E“ on the rear panel. 3. Remove 3 screws “F“ on the rear panel. 4. Remove the power cord stopper up side.5. Remove the rear panel.Removing the tuner board and video board (See Fig.5)1. Remove the rear panel.2. Remove 1 screw “G“ on the video board3. Disconnect the connector CN311 on thevideo board4. Disconnect the connector CN111 on theaudio & source selector board.A 2A 2BBBFig.1C C C CFig.2BOTTOM COVERFig.4Power cordStopperECN311GVIDEO boardFig.5Audio &sourceselectorboardTunerboardCN111DDDFig.3CN811CN314MainboardAudio &sourceselectorboardFFFEEEERX-5000VBK/RX-5001VGD1-4Removing the audio & source selector board (See Fig.6)1. Remove the rear panel.2. Remove the video board and Tuner board.3. Disconnect the connector CN512 and CN619 on the audio & source selector board. 4. Disconnect to the card wire CN314 on the audio &source selector board.5. Disconnect the connector CN712 on the AMP board.6. Each tie band is cut out.7. Pullout the connection board.8. Remove 4 screws “H“ on the audio & sourceselector board.9. Remove the audio & source selector board.Removing the main board (See Fig.6 to 8)1. Remove the rear panel and front panel assembly.2. Pull out the pre AMP board and connection board.3. Remove 8 screws “I“ on the main board.4. Remove 8 screws “J“ on the power transistor. 5. Disconnect the connector CN511 and wireCN831 on the main board.6. Each tie band is cut out.7. Remove 2 screws “K“ on push switch of the front side.8. Remove nut on terminal of the headphone.9. The solder of the wire connected with thetransformer is removed.10. Remove the main board.Removing the front board (See Fig.9)1. Remove the top cover.2. Remove the Front panel assembly.3. Remove the master volume knob and nut.4. Remove the 13 screws “L“ on the Front board.CN712HHHConnection board(Standing substrate)HCN512CN314Fig.6Audio & sourceselector boardFig.8NUTKKHeadphone jackFig.9LLLLLLLCN511Pre AMP board(Standing substrate)CN831JMainPCBFig.7IIIIIIISolderSolderAudio & sourceselector boardConnectionboardCN619RX-5000VBK/RX-5001VGD1-5Adjustment methodIDLING CURRENT1.Set the volume control to minimum during this adjustment.2.Set the surround mode OFF.2.Turn VR741 and VR742 fully counterclockwise to warm up before adjustment.If the heat sink is already warm from previous use the correct adjustment can not be made.3.For L-ch,connect a DC voltmeter between TP001's pin1 and pin2 (Lch)And,connect it between pin3 and pin4(Rch).4.30 minutes later after power on, adjust VR741 for L-ch, or VR742 for R-ch so that the DC voltmeter value has 1mV10mV.1.Tuner rangeFM 87.5MHz108.0MHz AM(MW) 530kHz1710kHzVR742TP001VR7414 3 2 1LchRchTP001TUNER SECTIONPOWER AMPLIFIER SECTIONRX-5000VBK/RX-5001VGD1-6123456789101112131415161718192021424140393837363534333231302928272625242322OUT4OUT3OUT2OUT1AVDDSWINGNDSSRinSLinGNDCCinGNDRRinGNDLLinBYPASSRBYPASSLLTRELBASS3LBASS2LBASS1DVDDCLKDATALATCHDGNDAGNDSWoutSRoutSLoutCoutRoutLoutAVSSCL1CL2CR1CR2RTRERBASS3RBASS2RBASS1OUT-PUTPORT volumevolumevolumevolumevolumevolumeMCUI/Ftone tone1.Block DiagramM62446FP(IC341) : 6CH Master volumeDescription of major ICsRX-5000VBK/RX-5001VGD1-712345678910111213141516,171819212223,24252627282930313233343536373839404142SURROUNDBASS BOOSTINPUT-ATTMUTINGAVDDSWINA.GNDRR INRL INA.GNDC INA.GNDR INA.GNDL INAVSSL OUTR OUTC OUTRL OUTRR OUTSW OUTA.GNDD.GNDVOL STBVOL DATAVOL CLKDVDDOOOO-I-II-I-I-I-O-IOI-OOOOOO-III-SURROUND control terminalBASS BOOST control terminalInput attenuator control terminalMUTING control terminalAnalog positive power supply terminalSUB Woofer volume signal input terminalAnalog ground terminalR ch volume signal input terminal for rear speakerL ch volume signal input terminal for rear speakerAnalog ground terminalCenter volume signal input terminalAnalog ground terminalR ch volume signal input terminalAnalog ground terminalL ch volume signal input terminalNon connectFrequency adjustment terminal tone/trebleFrequency adjustment terminal tone/bassTone output terminalFrequency adjustment terminal tone/bassFrequency adjustment terminal tone/trebleFrequency adjustment terminal tone/bassL/R volume input terminalTone output terminalL/R volume input terminalAnalog negative power supply terminalL ch outputR ch outputCenter volume signal output terminalL ch volume signal output terminal for rear speakerR ch volume signal output terminal for rear speakerSUB Woofer volume signal output terminal Analog ground terminalDigital ground terminalLatch input terminalVolume data input terminalClock input terminal for data transferDigital power supply terminalPin No.Symbol I/O Descriptions2.Pin FunctionRX-5000VBK/RX-5001VGD1-82. Pin FunctionPinNo.Symbol I/OFunctionFunctionI/OSymbolPinNo.123456789101112131415FM INAM MIXFM IF AM IFGNDTUNEDSTEREOVCCFM DETAM SDFM VSMAM VSMMUTEFM/AMMONO/ST OII/OOOIOIIIOOIIIIIThis is an input terminal of FM IFsignal.This is an out put terminal for AMmixer.Bypass of FM IFInput of AM IF Signal.This is the device ground terminal.When the set is tunning,this terminalbecomes “L“.Stereo indicator output. Stereo “L“,Mono: “H“This is the power supply terminal.FM detect transformer.This is a terminal of AM ceramic filter.Adjust FM SD sensitivity.Adjust AM SD sensitivity.When the signal of IF REQ of IC121(LC72131) appear, the signal of FM/AMIF output. /Muting control input.Change over the FM/AM input.“H“ :FM, “L“ : AMStereo : “H“, Mono: “L“161718192021222324252627282930 OSC BUFFERAM OSCREGAM RFAFCAM AGCOIOIIIAM Local oscillation Signal output.This is a terminal of AM Localoscillation circuit.Register value between pin 26 and pin28besides the frequency width of the input signal.AM RF signal input.This is an output terminal of voltagefor FM-AFC.This is an AGC voltage input terminalfor AMOOIOAM detection output.FM detection output.Mpx input terminalOOIRight channel signal output.Left channel signal output.Input terminal of the Right channel postAMP.Input terminal of the Left channel post AMP.IOMpx Left channel signal output.Mpx Right channel signal output.R OUTL OUTR INL INROLOIF INFM OUTAM DET1. Block DiagramALCBUFFAMOSCREGAMMIXFMRF.AMPAGCAM IF DETSDCOMPAMS-METERFMS-METERFM IFPMDETS-CLRVEAM/FMIF-BUFFTUNINGDRIVEGNDVCCSTEREODRIVEMUTEDECODERANIT-BIRDIESTEREO5NSWP-DETPILOTDETFF19kFF19kFF38kVCO384KHz/ 2/LS30 29 28 27 26 25 24 23 22 21 20 19 18 17 161 2 3 4 6 7 8910 11 12 13 14 155LA1838(IC102): FM AM IF AMP&detector, FM MPX Decoder RX-5000VBK/RX-5001VGD1-91. Pin layout12345678910112221201918171615141312XTFM/AMCEDICLOCKDOFM/ST/VCOAM/FMSDINXTGNDLPFOUTLPFINPDVCCFMINAMINIFCONTIFINPinNo.1234567891011PinNo.1213141516171819202122SymbolXTFM/AMCEDICLOCKDOFM/ST/VCOAM/FMLWMWSDINSymbolIFINIFCONTAMINFMINVCCPDLPFINLPFOUTGNDXTFunctionX'tal oscillator connect (75kHz)LOW:FM modeWhen data output/input for 4pin(input) and6pin(output): HInput for receive the serial data from controllerSync signal input useData output for ControllerOutput port“Low“: MW modeOpen state after the power on resetInput/output portInput/output portData input/outputFunctionIF counter signal inputIF signal outputNot useAM Local OSC signal outputFM Local OSC signal inputPower suplly(VDD=4.5-5.5V)When power ON:Reset circuit movePLL charge pump output(H: Local OSCfrequency Height than Reference frequency.L: Low Agreement: Height impedance)Input for active lowpassfilter of PLLOutput for active lowpassfilter of PLLConnected to GNDX'tal oscillator(75KHz)I/OIOIIIOOOI/OI/OI/OI/OIO-II-OIO-IReferenceDriverPhaseDetectorCharge PumpUnlockDetectorUniversalCounterSwallow Counter1/16,1/17 4bit12bitProgrammableDriverSData Shift Register & LatchPoweronResetC2BI/F1/2782 11 13211765431516221181920122. Block diagram3. Pin functionLC72136N (IC121) : PLL Frequency SynthesizerRX-5000VBK/RX-5001VGD1-101,23,4567101112212223243940414243444546474849505152535455565758596061626364IN1,2VIDEO1,2PROTECTPOWERKI03VCR /S/CG11G2G1/KO7VPPS116B.BOOST LEDCLK.DDATAIN.DDATAOUT.DINHRDS CLKRDS DATASW DATAREMOCON INRDS D.STSTEREOTUNEDCE.PLLCK.PLLSW.CLKDO.PLLDCS INDCS OUTERR.DSPIFOK.DSPACK.DSPCD.DSPRELAY SchT.MUTESUBWFMUTEPin No. Symbol I/O FunctionVolume jog signal inputVideo signal switch outputProtect signal input of speakerPower ON outputKey matrix signal inputNot usedFL grid signal outputFL grid signal output / Key matrix signal outputPower supplyFL segment control signal outputBass boost indicator controlClock signal output to DSPData signal input from DSPData signal output to DSPInhibit detection signal inputClock signal input from RDSData input from RDSFunction switch data signal outputRemote control signal inputData start signal for block data to output serial dataStereo indicator output. Stereo “L“ Mono “H“When the set is tuning, this terminal becomes “L“Chip enable output to IC121Clock signal for IC121Function switch clock signal outputTuner PLL dataCompulink signal inp