JVC-RX7012RSL-avr-sm 维修电路原理图.pdf

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1、SERVICE MANUALAUDIO/VIDEO CONTROL RECEIVERNo.20938Apr. 2001COPYRIGHT 2001 VICTOR COMPANY OF JAPAN, LTD.RX-7010RBKRX-7012RSLRX-7010RBK/RX-7012RSLContentsSafety precautions -1-2Disassembly method -1-3Adjustment method -1-8Description of major ICs -1-9 19As for RX-7012RSL the body is silver color ECont

2、inental EuropeArea Suffix ENNorthern EuropeD I G I T A LCONTROL+231564897/P0+1010BASS BOOSTEFFECTMENUENTERTEST+ REARL SOUND SUB WOOFER + REARR +MUTINGCHTV VOLPLAYSTOP/REWFF/VOLUMECA TV/DBSCONTROLTV/VIDEORECPAUSEPAUSERETURNFM MODE100+CONTROLA/V CONTROL RECEIVERRM-SRX7010RCATV/DBSVCRTVAUDIODSPMODEINPU

3、TON/OFFDVD MUILTIDVDCDTAPE/CDRTREBLETV/DBSVCRPHONOFM/AMBASSSURROUNDANALOG/DIGIT ALSLEEP+ CENTER TUNING+PTYPTY+PTY SEARCHDISPLAYDVDVCRTV SOUND/DBSADJUSTAUDIO/VIDEO CONTROL RECEIVERSETTINGMASTER VOLUMECONTROLDOWNUPCDTAPE/CDRSOURCE NAMEBASS BOOSTINPUT ANALOG/DIGITALSPEAKERS ON/OFFDSP MODEPHONESSURROUND

4、 ON/OFFFM/AM TUNINGSTANDBYFM/AM PRESETFM MODEMEMORYINPUT ATTFM/AMD I G I T A LD I G I T A LSURROUNDDVD MULTIPHONOSOURCE NAME12COMPULINKRemoteSTANDBY/ONEONPTY SEARCHTA/NEWS/INFODISPLAY MODERadioFans.CN 收音机爱 好者资料库RX-7010RBK/RX-7012RSL1-21. This design of this product contains special hardware and many

5、 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 p

6、ersonnel 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

7、 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 compone

8、nts 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.

9、 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 an

10、d 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 norma

11、l, 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 pr

12、oduct 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

13、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. Co

14、nnect 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 retur

15、n 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 int

16、ernational 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 vo

17、ltage 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 t

18、o 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 crit

19、ical 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.comRadioFans.CN 收音机爱 好者资料库RX-7010RBK/RX-7012RSL1-3Remove the four screws A attaching the top cover on both sides of the body.Remove the

20、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 re

21、ar panel by moving it in the direction of the arrow.Remove the twenty seven 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 followin

22、g 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 t

23、he 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 boardCN402Main boardTie bandDEEFEFFCord stopperCFront panel assemblyFront panel

24、assemblyDRear panelCN201FEEEERX-7010RBK/RX-7012RSL1-4Prior 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 Video board a

25、nd the S video board from connector CN421, CN431,CN441 and CN461 on the audio board.Disconnect the tuner board from connector CN411 and CN412 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.6Fig.7Fig.8CN411CN412Tie bandDSP boardDVD

26、 boardVideo boardTuner boardAudioinput boardDSP boardCN481CN441CN431CN421CN481CN421CN431CN441CN411CN412Tie bandCN421CN431CN441Audioinput boardDVD boardVideo boardTuner boardAudio boardCN461S Video boardCN461S Video boardCN461Tie bandTie bandRX-7010RBK/RX-7012RSL1-5Prior to performing the following p

27、rocedure, 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, C

28、N403 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

29、the Heat sink (See Fig.11 to 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.In cas

30、e where the sub board is installed,detach it after removing the connectors CN208,CN209 and CN210 as well as the screw J.1.2.3.Removing the main board (See Fig.10)Fig.9Fig.10Fig.11Fig.12powersupply boardPower / FuseboardRelay board CN473Audio boardMain board rear sideMain boardHeat sink CN291CN203CN4

31、91HGCN471CN403CN402CN472Power transformerGGCN241IIIIJJLLKKKLLJCN208CN209CN210CN385RX-7010RBK/RX-7012RSL1-6Prior to performing the following procedure, remove the top cover and the rear panel.Remove the screw N attaching the power / fuse board.Unsolder the power cord and other harnesses connected to

32、the power / fuse board.1.2.Removing the power / fuse board(See Fig.13)Prior to performing the following procedures, remove the top cover.Unsolder the two harnesses connected to the power transformer.Disconnect the harness from connector CN251 and unsolder the harnesses connected to FW201 on the powe

33、r transformer board.Remove the four screws M attaching the power transformer.1.2.3.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 si

34、de of the body.Disconnect the harness connected to connector CN241,CN201,CN203 and CN291 on the power transformer board (If necessary, cut off the band fixing the harness on the side of the base chassis).Remove the three screws O attaching the power supply board and pull out the power supply board f

35、rom 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 transformerMCN241SolderMSolderSolderNPower / fuse boardPower cordPower supplyboardNutHeadphone jack

36、Headphone jackTie bandSolderOOOSolderCN201CN291HookPower transformerboardFW201CN203RX-7010RBK/RX-7012RSL1-7Prior 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 sys

37、tem 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 pushi

38、ng 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 swit

39、ch boardQQCN714PJointJointJointJointJointJointHookHookOperation switch panelJointJointRX-7010RBK/RX-7012RSL1-8Adjustment 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 a

40、djustment. 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 TP301s B216 and B217 (Lch) And,connect it between TP302s B218 and B219(Rch).4.30 minutes later after power on, adjust VR301 for L-ch, or VR302 for R-ch so th

41、at the DC voltmeter value has 1mV10mV.1.Tuner range FM 87.5MHz108.0MHz AM (MW) 522kHz1629kHz (LW) 144kHz 288kHzTuner sectionPower amplifier sectionTP302(Rch)VR301 (Lch)VR302 (Rch)Heat sinkAdjustment of idling currentMeasurement locationTP301(Lch) , TP302(Rch)Adjustment partVR301(Lch) , VR302(Rch)Att

42、entionThis 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

43、not abnormal though the idling current might not become 0mA even if it is finished to turn variable resistance (VR301,VR302) in the direction of counterclockwise. TP301(Lch)RX-7010RBK/RX-7012RSL1-93.Block Diagram1.Terminal Layout2.Pin FunctionSAA6588 (IC191) : RDS detector MRONCGNDOSCOOSCIVSSDVDDDDA

44、VNSDASCLNCCINSCOUTVrefMPXVSSAVDDANCGNDNC123456789102019181716151413121157 kHz8th ORDERBAND-PASSCLOCKCOMPARATORRDS/RDBSDEMODULATORRDS/RDBSDECODERPAUSEDETECTORMULTI-PATHDETECTORSIGNAL QUALITYDETECTORINTERFACEREGISTERPOWERSUPPLYAND RESETTESTCONTROLOSCILLATORAND CLOCKIC-BUS SLAVETRANSCEIVER1613201415171

45、819315461281129107MPXAFINLVINVDDAVSSAVrefTCONMROOSCIOSCOVSSDMADSCLSDAMPTHPSWNDAVNVDDDCINSCOUTMRONCGNDOSCOOSCIVSSDVDDDDAVNSDASCLNCGNDNCVDDAVSSAMPXVrefSCOUTCINNC1234567891011121314151617181920FunctionI/OSymbolPinNo.Multi-path rectifier outputNon connectTest control input pinOscillator outputOscillator

46、 inputDigital ground (0V)Digital power supply (5V)Data available output (active LOW)IC-bus serial data I/OIC-bus serial clock inputNon connectConnect to groundNon connectAnalog power supply (5V)Connect to groundMultiplex input signalReference voltage outputBand-pass filter outputComparator outputLev

47、el inputO-IOI-OI/OI-IOOOIDescription of major ICsRX-7010RBK/RX-7012RSL1-10 1 2 3 4 5 6 7 8 91011333231302928272625242312131415161718192021224443424140393837363534SDOSI2CSMUTEBICKLRCKSDTI1SDTI2SDTI3SDTODAUXDFSDZF2/OVFRIN+RIN-LIN+LIN-ROUT1LOUT1ROUT2LOUT2ROUT3LOUT3NCDZFETVDDDVDDDVSSPDNTSTNCADIFCAD1CAD0

48、LOOP1LOOP0/SDA/CDTIDIF1/SCL/CCLKDIF0/CSNP/SMCLKDZF1AVSSAVDDVREFHVCOM1.Pin layoutAK4527B (IC601) : A/D,D/A converterAK4527BVQTop ViewNo. 1 2 3 4 5 6 7 8 9101112131415161718Pin nameSDOSI2CSMUTEBICKLRCKSDTI1SDTI2SDTI3SDTODAUXDFSNCDZEFTVDDDVDDDVSSPDNTSTSDTO Source Select Pin (Note 1) L : Internal ADC ou

49、tput, H : DAUX input Control Mode Select Pin L : 3-wire Serial, H : I2C BusSoft Mute Pin (Note 1) When this pin goes to H, soft mute cycle is initialized. When returning to L, the output mute releases.Audio Serial Data Clock PinInput Channel Clock PinDAC1 Audio Serial Data Input PinDAC2 Audio Serial

50、 Data Input PinDAC3 Audio Serial Data Input PinAudio Serial Data Output PinSub Audio Serial Data Input PinDouble Speed Sampling Mode Pin (Note 1) L : Normal Speed, H : Double SpeedNo Connect No internal bonding.Zero Input Detect Enable Pin L : mode 7 (disable) at parallel mode, zero detect mode is s