Jvc-RX-6008-VBK-Service-Manual电路原理图.pdf

SERVICE MANUALAUDIO/VIDEO CONTROL RECEIVERNo.20807Jan. 2000COPYRIGHT 2000 VICTOR COMPANY OF JAPAN, LTD.Printed in Japan2000 01(V)VICTOR COMPANY OF JAPAN, LIMITEDAUDIO DIVISION,10-1,1Chome,Ohwatari-machi,maebashi-city,371-8543,JapanRX-6000VBKRX-6008VBKRX-6100VBKNo.20807RX-6000VBKRX-6008VBKRX-6100VBKRX-6000VBKRX-6008VBKRX-6100VBKThis service manual is made from 100% recycled paper.RX-6000VBK/RX-6008VBK/RX-6100VBKNo.20807J U.S.A.Area SuffixRX-6000VBKRX-6008VBKC CanadaArea Suffix(RX-6100VBK)ContentsSafety precautions - 1-2Instructions - 1-312Disassembly method - 2-1Adjustment method - 2-7Description of major ICs - 2-8Block diagrams - 2-19Standard schematic diagrams - 2-21Printed circuit boards - 2-Parts list - 3-1RX-6000V AUDIO/VIDEO CONTROL RECEIVERSTANDBYPHONESSPEAKERS12ADJUSTSETTINGMEMORYDVDCDTV SOUND/DBSTAPE/MDVCRPHONOTHEATER LIVE CLUB DANCE CLUB HALL PAVILLIONDIGITAL AUTOONSOURCE NAMESOURCE NAMEONE TOUCH OPERATION/INPUT ATT. DSP. MODE MULTI CURSORANALOG/DIGITALSURROUNDFM/AMMASTER VOLUME-+OFF_ ONPOWERDIGITAL171RM-SRX6000J REMOTE CONTROLSURROUNDSURROUNDMODESOUNDTV/VIDEO CD-DISC3215 SUBWOOFER +TEST654EFFECT CENTER +598 REAR L + VCR CH +5TV VCR AUDIOSLEEP+1010 REAR R +MENUENTER5TAPE/MD PHONO FM/AMMUTINGCDTV SOUND/DBS VCR ANALOG/DIGITALTV VOLTV CHDVD VCR CH+ +VOLUME£POWER8+7/PDIGITALEach difference pointModel ContentRX-6000VBK Base modelRX-6008VBK The one that model name was changedfor “THEATER IN THE BOX“ by the samespecification as “RX-6000VBK“.RX-6100VBK The one that remote control waschanged to preset remote control bythe same specification as “RX-6000VBK“. This illustration is RX-6000VBKSafety 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.com2-1RX-6000VBK/RX-6008VBK/RX-6100VBKRemove the four screws A attaching the top cover on both sides of the body.Remove the three screws B on the back of the body.Remove the top cover from behind in the direction of the arrow while pulling both sides outward.1.2.3.Disassembly methodRemoving the top cover (See Fig.1)Prior to performing the following procedure, remove the top cover.Disconnect the harness from connector CN314 on the volume control board and connector CN811 on the main board.Remove the three screws C attaching the front panel assembly.Remove the four screws D attaching the front panel assembly on the bottom of the body.1.2.3.Removing the front panel assembly(See Fig.2 and 3)Top coverVolume controlboardCN314Main boardFront panel assemblyA 2BCD Front panel assemblyBottom coverFig.1Fig.2Fig.3CN811A 2RX-6000VBK/RX-6008VBK/RX-6100VBK2-2Prior to performing the following procedure, remove the top cover.Remove the power cord stopper while moving it in the direction of the arrow.Remove the twenty-two screws E attaching each board to the rear panel.Remove the three screws F attaching the rear panel on the back of the body.1.2.3.Removing the rear panel (See Fig.4)Prior to performing the following procedure, remove the top cover.For the harness extending from the AV compulink & sub woofer board to the volume control board, disconnect it from connector CN617 on the volume control board and cut off the two tie bands. Disconnect the AV compulink & sub woofer board from connector CN616 on the volume control board. Disconnect the relay board 1 from connector CN609 on the video terminal board and CN603 on the audio board.Disconnect the S-video board from connector CN618 on the volume control board.Disconnect the video terminal board from connector CN614 on the volume control board.Release joint a of the lower part of the DSP board and the bracket. Disconnect the DSP board from connector CN651 and CN657 on the volume control board.Disconnect the audio board from connector CN611 and CN612 on the volume control board.Disconnect the tuner board from connector CN121 on the volume control board.1.2.3.4.5.6.7.Removing each board connected to the volume control board (See Fig.5 to 7)EPower cord stopperRear panelFVolume control boardCN617Tie bandsRelay board 1CN603 CN609AV compulink & sub woofer boardAudio boardCN603Video terminal boardCN609S-video boardDSP boardCN614AV compulink &sub woofer boardTuner board Joint aEEEEEEEFFFig.4Fig.5Fig.6Fig.7Volume control boardCN616Tuner board Relay board 1Video terminal boardCN618CN616Volume control boardCN121CN611CN612Audio boardDSP boardAV compulink &sub woofer boardS-video boardCN651CN657EVideo terminal board2-3RX-6000VBK/RX-6008VBK/RX-6100VBKPrior to performing the following procedure, remove the top cover and the rear panel.Disconnect the card wire from connector CN314 on the volume control board.Cut off the three tie bands fixing the harness.Disconnect the harness from connector CN712 on the preamplifier board.Disconnect the relay board from connector CN615 on the volume control board and CN851 on the main board.Remove the five screws G attaching the volume control board.1.2.3.4.5.Removing the volume control board(See Fig.8)Prior to performing the following procedure, remove the top cover.Disconnect the harness from connector CN712 on the preamplifier board and cut off the one tie band.Disconnect the preamplifier board from connector CN711 and CN713 on the main board.1.2.Removing the preamplifier board(See Fig.9)It is not necessary to remove the boards inserted to the back of the volume control board.ATTENTION: Preamplifier boardCN712GFig.8Fig.9Tie bandCN615CN851Tie bandsGVolume control boardRelay boardPreamplifier boardCN712Main boardCN713Main boardCN711Tie bandCN314RX-6000VBK/RX-6008VBK/RX-6100VBK2-4Prior to performing the following procedure, remove the top cover.Disconnect the harness from connector CN831 on the main board.Remove the two screws H attaching the regulator board to the heat sink.Disconnect the harness from connector CN511 on the main board and CN512 on the volume control board.Cut off the three tie bands fixing the harnesses.Remove the two screws I attaching the rear-Rch amplifier board to the heat sink.1.2.3.4.Removing the regulator board / the rear-Rch amplifier board (See Fig.10 and 11)Prior to performing the following procedure, remove the top cover, the rear panel, the relay board and the preamplifier board.Disconnect the card wire from connector CN811 on the main board.Unsolder each harness connecting the power transformer and the main board.Unsolder the power cord on the main board.Remove the eight screws J attaching the main board to the heat sink.Remove the eight screws K attaching the main board.For the harness extending from the speaker switch board, unsolder FW902 on the main board.1.2.3.4.5.6.Removing the main board(See Fig.12 and 13)Tie bandTie bandMain boardCN831Tie bandMain boardCN511Rear-Rch amplifier boardVolume controlboardCN512Fig.10Fig.11Fig.12Fig.13Regulator boardRegulator boardRear-Rch amplifier boardHIKHeat sinkKKKMain boardCN811Power transformerFW902SolderedpartSpeaker switchboardMain boardSoldered partJ JHeat sinkPower transformerMain boardCN8112-5RX-6000VBK/RX-6008VBK/RX-6100VBKPrior to performing the following procedures, remove the top cover.Unsolder each harness connected to the power transformer respectively.Remove the four screws L attaching the power transformer.Removing the power transformer(See Fig.14)Prior to performing the following procedure, remove the top cover and the front panel.Remove the two screws M attaching the speaker switch board on the front side of the body.Remove the one nut attaching the headphone board on the front side of the body.Pull out the speaker switch board and the headphone board backward.Unsolder each soldered part.1.2.3.4.Removing the speaker switch board/ the headphone board (See Fig.15 and 16)1.2.Fig.14Fig.15Fig.16SolderedpartLLSoldered partHeadphone boardNutMHeadphone boardSpeaker switchboardPower transformerSoldered partRX-6000VBK/RX-6008VBK/RX-6100VBK2-6Prior to performing the following procedure, remove the top cover and the front panel.Pull out the volume knob on the front side of the front panel and remove the nut attaching the volume board.Remove the three screws N attaching the volume board on the back of the front panel and disconnect the harness from connector CN411 on the volume board.Remove the ten screws O attaching the system control board and disconnect the harness from connector CN402 on the system control board.Remove the six screws P attaching the operation switch board. Push each tab b of the four joints inward and detach the operation switch board to the front.Remove the screw Q attaching the operation switch board.1.2.3.4.5.Removing each board in the front panel assembly (See Fig.17 to 20)Fig.20Fig.19Fig.18Fig.17System control boardQPPTab bTab bPOOOONNVolume boardCN402CN411System control boardVolume knobNutFront panel assembly2-7RX-6000VBK/RX-6008VBK/RX-6100VBKAdjustment 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-6000VBK/RX-6008VBK/RX-6100VBK2-81234567891011333231302928272625242312 13 14 15 16 17 18 19 20 21 2244 43 42 41 40 39 38 37 36 35 34SDOSOCKSMISBCLKLRCKSDTI1SDTI2SDTI3SDTODAUXDFSVREFLRIN+RIN-LIN+LIN-ROUT1LOUT1ROUT2LOUT2ROUT3LOUT3DEM1 DEM0 MCKODVDDDVSSPD XTS ICKS1 ICKS0 CAD1 CAD0CDTOCDTI CCLK CS PIS XTOXTI AVSSAVDDVREFH VCOM1.Pin layoutLIN+LIN-RIN+RIN-LOUT1ROUT1LOUT2ROUT2LOUT3ROUT3LPFLPFLPFLPFLPFLPFDACDACDACDACDACDACDATTDATTDATTDATTDATTDATTADCADCHPFHPFAudioI/FMCLKBICKLRCKSDOUTSDIN1SDIN2SDIN3SDTOSDTI1SDTI2SDTI3SDOSDAUXFormatConverterBlock Diagram (DIR and AC-3) DSP are external parts)2.Block diagramAK4527 (IC601) : A/D,D/A ConverterDescription of major ICs