Jvc-RX-7012-RSL-Service-Manual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 E Con

2、tinental EuropeArea SuffixEN Northern EuropeDIGITALCONTROL+231564897/P0 +1010BASS BOOST EFFECTMENUENTERTEST + REAR L SOUND SUB WOOFER + REAR R +MUTINGCH TV VOLPLAYSTOP/REW FF/VOLUMECATV/DBSTV/VIDEORECPAUSEPAUSERETURN FM MODE 100+CONTROLA/V CONTROL RECEIVERRM-SRX7010RCATV/DBS VCR TV AUDIODSPMODE INPU

3、TON/OFFDVD MUILTIDVD CDTAPE/CDRTREBLETV/DBS VCR PHONOFM/AMBASSSURROUND ANALOG/DIGITAL SLEEP+ CENTER TUNING+ + PTY PTY+PTY SEARCHDISPLAYDVD VCR TV SOUND/DBSADJUSTAUDIO/VIDEO CONTROL RECEIVERSETTINGMASTER VOLUMECONTROLDOWN UPCD TAPE/CDRSOURCE NAMEBASS BOOSTINPUTANALOG/DIGITALSPEAKERS ON/OFFDSP MODEPHO

4、NESSURROUND ON/OFFFM/AM TUNINGSTANDBYFM/AM PRESET FM MODEMEMORYINPUT ATTFM/AMDIGITALDIGITALSURROUNDDVD MULTIPHONOSOURCE NAME12COMPULINKRemoteSTANDBY/ONEON PTY SEARCH TA/NEWS/INFO DISPLAY MODERX-7010RBK/RX-7012RSL1-21. This design of this product contains special hardware and many circuits and compon

5、ents 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. Alt

6、erations 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

7、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

8、 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 substi

9、tute 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 sep

10、arated 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-assembli

11、ng.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 ope

12、rate 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

13、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

14、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 chas

15、sis, 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

16、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

17、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 th

18、e 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 safet

19、y. 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-7010RBK/RX-7012RSL1-3Remove the four screws A attaching the top cover on both sides of the body.Remove the three screws B on the back of the bod

20、y.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 directio

21、n 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 following procedure, remove the top cover.Dis

22、connect 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

23、 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 bandDEEF EFFCord stopperCFront panel assemblyFront panel assemblyDRear panelCN201FEEE ERX-7010

24、RBK/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 and the S video board from connector

25、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 bandDSPboardDVDboardVideo boardTunerboardAudioinputb

26、oardDSP boardCN481CN441CN431CN421CN481CN421CN431CN441CN411CN412Tie bandCN421CN431CN441AudioinputboardDVDboardVideo boardTunerboardAudioboardCN461S Video boardCN461S Video boardCN461Tie bandTie bandRX-7010RBK/RX-7012RSL1-5Prior to performing the following procedure, remove the top cover and the rear

27、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, CN403 and CN385.Remove the three screws G att

28、aching 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 to 12)Prior to per

29、forming 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 case where the sub board is installed,detach it

30、 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.11 Fig.12powersupply boardPower / FuseboardRelay board CN473Audio boardMain boardrear sideMainboardHeat sink CN291CN203CN491HGCN471CN403CN402CN472Power transformerGGCN

31、241IIIIJJLLKKKLLJCN208CN209CN210CN385RX-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 the power / fuse board.1.2.Removing the power

32、 / 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 power transformer board.Remove the four screws M

33、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 side of the body.Disconnect the harness connect

34、ed 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 from the front bracket backward.Unsolder the t

35、hree 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 jackHeadphone jackTie bandSolderOOOSolderCN201CN2

36、91HookPower 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 system control board.Remove the two screws P att

37、aching 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 operatio

38、n 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 Jo

39、intHookHookOperation 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 adjustment.If the heat sink is already warm

40、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 that the DC voltmeter value has 1mV10mV.1.Tuner

41、 rangeFM 87.5MHz108.0MHz AM (MW) 522kHz1629kHz(LW) 144kHz 288kHzTuner 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 corre

42、ct 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

43、not become 0mA even if it is finished to turn variableresistance (VR301,VR302) in the direction of counterclockwise. TP301(Lch)RX-7010RBK/RX-7012RSL1-93.Block Diagram1.Terminal Layout2.Pin FunctionSAA6588 (IC191) : RDS detector MRONCGNDOSCOOSCIVSSDVDDDDAVNSDASCLNCCINSCOUTVrefMPXVSSAVDDANCGNDNC123456

44、789102019181716151413121157 kHz8th ORDERBAND-PASSCLOCKCOMPARATORRDS/RDBSDEMODULATORRDS/RDBSDECODERPAUSEDETECTORMULTI-PATHDETECTORSIGNAL QUALITYDETECTORINTERFACEREGISTERPOWERSUPPLYAND RESETTESTCONTROLOSCILLATORAND CLOCKIC-BUS SLAVETRANSCEIVER1613201415 1718 19315 4 6 1281129107MPXAFINLVINVDDAVSSA Vre

45、f TCON MROOSCI OSCO VSSD MADSCLSDAMPTHPSWNDAVNVDDDCINSCOUTMRONCGNDOSCOOSCIVSSDVDDDDAVNSDASCLNCGNDNCVDDAVSSAMPXVrefSCOUTCINNC1234567891011121314151617181920FunctionI/OSymbolPinNo.Multi-path rectifier outputNon connectTest control input pinOscillator outputOscillator inputDigital ground (0V)Digital po

46、wer 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 outputLevel inputO-IOI-OI/OI-IOOOIDescriptio

47、n of major ICsRX-7010RBK/RX-7012RSL1-101234567891011333231302928272625242312 13 14 15 16 17 18 19 20 21 2244 43 42 41 40 39 38 37 36 35 34SDOSI2CSMUTEBICKLRCKSDTI1SDTI2SDTI3SDTODAUXDFSDZF2/OVFRIN+RIN-LIN+LIN-ROUT1LOUT1ROUT2LOUT2ROUT3LOUT3NC DZFE TVDD DVDDDVSSPDN TST NC ADIF CAD1 CAD0LOOP1 LOOP0/SDA/

48、CDTIDIF1/SCL/CCLK DIF0/CSN P/S MCLK DZF1 AVSSAVDDVREFH VCOM1.Pin layoutAK4527B (IC601) : A/D,D/A converterAK4527BVQTop ViewNo.123456789101112131415161718Pin nameSDOSI2CSMUTEBICKLRCKSDTI1SDTI2SDTI3SDTODAUXDFSNCDZEFTVDDDVDDDVSSPDNTSTSDTO Source Select Pin (Note 1)“L“ : Internal ADC output, “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 PinDAC