Jvc-RX-6012-VSL-Service-Manual电路原理图.pdf
SERVICE MANUALAUDIO/VIDEO CONTROL RECEIVERNo.20988Jun. 2001COPYRIGHT 2001 VICTOR COMPANY OF JAPAN, LTD.RX-6010VBKRX-6012VSLRX-6010VBK/6012VSLContentsSafety precautions -1-2Disassembly method -1-3Adjustment method -1-8Description of major ICs -1-922DIGITALRX-6010VBKUJRX-6012VSLUYUSUPAU.S.militaryArgentinaSingaporeKoreaAustraliaArea Suffix171REMOTE CONTROLSURROUNDSURROUNDMODESOUNDTV/VIDEO CD-DISC15 SUBWOOFER +TEST654EFFECT CENTER +598 REAR L + VCR CH +5TV VCR AUDIOSLEEP+1010 REAR R +MENUENTER5TAPE/CDR FM/AMMUTINGCDTV SOUND VCR ANALOG/DIGITALTV VOLTV CHDVD + +VOLUME£8+7/PRM-SRX6010U A/V CONTROL RECEIVER32DVD VCR TV SOUNDADJUSTAUDIO/VIDEO CONTROL RECEIVERSETTINGMASTER VOLUMECONTROLDOWN UPCD TAPE/CDRSOURCE NAMEINPUT DIGITALINPUT ANALOGSPEAKERS ON/OFFDSP MODEPHONESSURROUND ON/OFFFM/AM TUNINGSTANDBYFM/AM PRESET FM MODEMEMORYINPUT ATTFM/AMDIGITALDIGITALSURROUNDSTANDBY/ONAs for RX-6012VSL the body is silver colorRX-6010VBK/ RX-6012VSL1-21. 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 each exposed 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.). 1. 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!Burrs 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.In regard with component parts appearing on the silk-screen printed side (parts side) of the PWB diagrams, the parts that are printed over with black such as the resistor ( ), diode ( ) and ICP ( ) or identified by the “ “ mark nearby are critical for safety. When replacing them, be sure to use the parts of the same type and rating as specified by the manufacturer. (Except the JC version)http:/getMANUAL.comRX-6010VBK/ RX-6012VSL1-3Remove 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.Remove the power cord stopper from the rear panel by moving it in the direction of the arrow.Remove the nineteen screws E attaching the each boards to the rear panel on the back of the body.Remove the four 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.Disconnect the card wire from connector CN402 on the audio board and CN201 on the power supply board in the front panel assembly.Cut off the tie band fixing the harness.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. Detach the front panel assembly toward the front.1.2.3.4.Removing the front panel assembly (See Fig.2 and 3)Fig.1Fig.2Fig.3Fig.4A 2A 2BTop coverCPower supply boardAudio boardCN402MainboardTie bandDEEFEEFFCord stopperCFront panel assemblyFront panel assemblyDRear panelCN201FEEEERX-6010VBK/ RX-6012VSL1-4Prior to performing the following procedure, remove the top cover and the rear panel.Cut off the tie band fixing the harness.Disconnect the DSP board from connector CN481 on the audio board.Disconnect the audio input board, DVD board and the video board from connector CN421, CN431 and CN441 on the audio board.Disconnect the tuner board from connector CN411 on the audio board.1.2.3.4.Removing each board connected to the rear side of the audio board(See Fig.5 to 8)Fig.5Fig.6CN411Tie bandDSPboardDVDboardVideo boardTunerboardAudioinputboardDSP boardCN481CN481CN421CN431CN441Fig.7CN421 CN431 CN441AudioinputboardDVDboardVideo boardFig.8CN441CN431CN421CN411Tie bandTunerboardAudioboardRX-6010VBK/ RX-6012VSL1-5Prior to performing the following procedure, remove the top cover and the rear panel.Removing the audio board (See Fig.9)Disconnect the card wire from connector CN402 on the audio board.Disconnect the relay board from the audio board and the power supply board. (CN291,CN491)Disconnect the harness from connector CN473, CN471, CN472, and CN385.Remove the three screws G attaching the audio board assembly.Remove the screw H attaching the audio board assembly.1.2.3.4.5.Remove the ten screws K and four screws L attaching the heat sink.Remove the two screws L' attaching the heat sink from the rear side of main board.1.2.Removing the Heat sink (See Fig.11 and 12)Prior to performing the following procedure, remove the top cover, the rear panel and audio board.Disconnect the harness from connector CN241 and CN203 on the power supply board respectively.Remove the four screws I and the two screws J attaching the main board.1.2.Removing the main board (See Fig.10)Fig.9Fig.10Fig.11Fig.12powersupply boardRelay board CN473Audio boardMain boardrear sideMainboardHeat sink CN291CN203CN491 HGCN471CN385CN402CN472Power transformerGGCN241IIIIJJLLKKKL'L'RX-6010VBK/ RX-6012VSL1-6Prior to performing the following procedure, remove the top cover and the rear panel.Unsolder the six harnesses connected to the power transformer board and remove the voltage board.Remove the screw N attaching the power / fuse board.Unsolder the power cord and other harnesses connected to the power / fuse board.1.2.3.Removing the voltage selector board and the power / fuse board (See Fig.13)Prior to performing the following procedures, remove the top cover.Cut off the tie band fixing the harness.Unsolder the two harnesses connected to the power transformer.Disconnect the harness from connector CN251 and unsolder the harnesses connected to FW201 on the power transformer board.Remove the four screws M attaching the power transformer.1.2.3.4.Removing the power transformer(See Fig.13)Prior to performing the following procedure, remove the top cover and the front panel.Remove the one nut attaching the headphone jack of the power supply board on the front side of the body.Disconnect the harness connected to connector CN241,CN201,CN203 and CN291 on the power transformer board.Remove the three screws O attaching the power supply board and pull out the power supply board from the front bracket backward.Unsolder the three harnesses connected to the power supply board.1.2.3.4.Removing the power supply board (See Fig.14 and 15)Fig.13Fig.14Fig.15Powersupply boardCN251Power transformerMCN241Solder(from the power/ fuse board)SolderSolderNPower / fuse boardPower cordPower supplyboardNutHeadphone jackHeadphone jackSolderOOOSolderCN201CN203HookPower transformerboardFW201CN291MTie bandVoltage selector boardTie bandSolder (from the voltage selector board)Power transformer boardPowersupply boardRX-6010VBK/ RX-6012VSL1-7Prior to performing the following procedure, remove the top cover and the front panel assembly.Pull out the volume knob on the front side of the front panel and remove the nut attaching the system control board.Remove the two screws P attaching the power switch board.Disconnect the harness from connector CN714 on the power switch board.Remove the six screws Q attaching the system control board on the back of the front panel.On the back of the front panel, release the eight joints by pushing the joint tabs inward. Remove the operation switch panel toward the front.Release the two hook attaching the system control board.1.2.3.4.5.6.Removing the system control board / power switch board (See Fig.16 to 18)Fig.16Fig.17Fig.18Front panel assemblyNutVolume knobSystem control boardPower switchboardQQCN714PJointJointJoint Joint Joint JointHookHookOperation switch panelJointJointRX-6010VBK/ RX-6012VSL1-8Adjustment method1.Set the volume control to minimum during this adjustment.(No signal & No load)2.Set the surround mode OFF.2.Turn VR301 and VR302 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 TP301's B216 and B217 (Lch)And,connect it between TP302's B218 and B219(Rch).4.30 minutes later after power on, adjust VR301 for L-ch, or VR302 for R-ch so that the DC voltmeter value has 1mV10mV.1.Tuner rangeFM 87.5MHz108.0MHz AM(MW) 531kHz1710kHzTuner sectionPower amplifier sectionTP302(Rch)VR301 (Lch)VR302 (Rch)Heat sinkAdjustment of idling currentMeasurement location TP301(Lch) , TP302(Rch)Adjustment part VR301(Lch) , VR302(Rch)AttentionThis adjustment does not obtain a correct adjustment value immediately after the amplifier isused (state that an internal temperature has risen). Please adjust immediately after using the amplifier after turning off the power supply of theamplifier and falling an internal temperature. * It is not abnormal though the idling current might not become 0mA even if it is finished to turn variableresistance (VR301,VR302) in the direction of counterclockwise. TP301(Lch)RX-6010VBK/ RX-6012VSL1-918910111213141516171819202122232425323334,353637,3839404142434445,464748495051,5253546364,6566676869,707172738081828384858687888990939495100VDDX2X1VSSXT2XT1RESETAUTODATALOCKDIGITAL0FORMATCHANNELERRRSTDETAVDDAVREF0AVSSAV REF1RX,TXDSPCOMDSPSTSDSPCLKDSPRDYMIDIO_IN/OUTMICKMICSMILPMIACKDSPRSTCDTI/CDTOCCLKCSXTSPDGNDVDD3D-ON3D-ONANA/T-TONEREF-MIXD.MUTES.MUTEASW14TESTNon connectPower supply terminalConnecting the crystal oscillator for system main clockConnecting the crystal oscillator for system main clockConnect to GNDConnecting the crystal oscillator for system sub clockConnecting the crystal oscillator for system sub clockSystem reset signal inputOutput of DSP to general-purpose portOutput of DSP to general-purpose portOutput of DSP to general-purpose portOutput of DSP to general-purpose portOutput of DSP to general-purpose portOutput of DSP to general-purpose portReset signal inputPower supply terminalConnect to GNDConnect to GNDConnect to GNDNon connectPower supply terminalNot useNon connectCommunication port from IC701Status communication port to IC701Clock input from IC701Ready signal input from IC701Non connectInterface I/O terminal with microcomputerInterface I/O terminal with microcomputer of clock signalInterface I/O terminal with microcomputer of chip selectInterface I/O terminal with microcomputerInterface I/O terminal with microcomputerNon connectReset signal output of DSPNon connectInterface I/O terminal with microcomputerInterface I/O terminal with microcomputer of clock signalInterface I/O terminal with microcomputer of chip selectOSC SelectNon connectReset signal outputConnect to GNDNon connectPower supplyNon connectSwitch at output destination of surround channelTest tone controlControl at output destination of LFE channelNon connectMute of the digital out terminal is controlledMute of the audio signal is controlledNon connectSelection of digital input selectorTest terminalNon connect-OI-OIIIIIIIII-IOII-I/OOOOO-O-I/OOOO-O-OOO-OO-O-Pin No. Symbol I/O Function75 511 257610050261.Pin layout2.Pin functionUPD784215
