JVC-RX7010VBK-avr-sm 维修电路原理图.pdf

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1、SERVICE MANUALAUDIO/VIDEO CONTROL RECEIVERNo.20910Feb. 2001COPYRIGHT 2001 VICTOR COMPANY OF JAPAN, LTD.RX-7010VBKRX-7010VBK JU.S.A.Area SuffixContentsSafety precautions -1-2Importance administering point on the safety - 1-3Disassembly method -1-4Adjustment method -1-9Description of major ICs -1-10D

2、I G I T A LDVDVCRTV SOUND/DBSADJUSTRX-7010VAUDIO/VIDEO CONTROL RECEIVERSETTINGMASTER VOLUMECONTROLDOWNUPCDTAPE/CDRSOURCE NAMEBASS BOOSTINPUT ANALOG/DIGITALSPEAKERS ON/OFFDSP MODEPHONESSURROUND ON/OFFFM/AM TUNINGSTANDBYPOWERFM/AM PRESETFM MODEMEMORYINPUT ATTFM/AMD I G I T A LD I G I T A LSURROUNDDVD

3、MULTIPHONOSOURCE NAME12COMPULINKRemoteCONTROL+231564897/P0+1010BASS BOOSTEFFECTMENUENTERTEST+ REARL SOUND SUB WOOFER + REARR +MUTINGCHTV VOLPLAYSTOP/REWFF/VOLUMECA TV/DBSCONTROLTV/VIDEORECPAUSEPAUSERETURNFM MODE100+CONTROLA/V CONTROL RECEIVERRM-SRX7010JCATV/DBSVCRTVAUDIODSPMODEINPUTON/OFFDVD MUILTID

4、VDCDTAPE/CDRTREBLETV/DBSVCRPHONOFM/AMBASSSURROUNDANALOG/DIGIT ALSLEEPPOWERPOWERPOWERPOWER+ CENTER TUNING+RadioFans.CN 收音机爱 好者资料库RX-7010VBK1-21. This design of this product contains special hardware and many circuits and components specially for safety purposes. For continued protection, no changes s

5、hould 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

6、 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 product

7、s 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

8、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 th

9、e 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

10、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-asse

11、mbling 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 transf

12、ormer 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 cur

13、rent 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 p

14、art 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 i

15、n 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 t

16、hese 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

17、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.http:/getMANUAL.comRadioFans.CN 收

18、音机爱 好者资料库RX-7010VBK1-3Caution: For continued protection against risk offire, replace only with same type 6.3A/125V forF201, 2A/125V for F202 and F203. This symbolspecifies type of fast operating fuse.Precaution: Pour eviter risques de feux, remplacezle fusible de surete de F201 comme le meme typeque

19、 6.3A/125V, et 2A/125V pour F202 et F203. Ce sont des fusibles suretes qui functionnes rapide.Importance administering point on the safety FC211FC212R1EP1B106B105B104TA201TA202PW104PW102PW105PW103PW101B103B102B101B108B107B109B110CN251D205FC221FC222FC231FC232R201RY201110111112113114120121122130131B19

20、2B191B160B1596.3A-125V2A-125V2A-125VF 201F 203F 202LVA1029-A9LVA1029-A7RX-7010VBK1-4Remove 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 out

21、ward.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 twenty eight screws E attaching the each boards to the rear panel o

22、n 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 b

23、oard 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 pan

24、el assembly (See Fig.2 and 3)Fig.1Fig.2Fig.3Fig.4A 2A 2BTop coverCPower supply boardAudio boardCN402Main boardTie bandDEEFEFFCord stopperCFront panel assemblyFront panel assemblyDRear panelCN201FEEEERX-7010VBK1-5Prior to performing the following procedure, remove the top cover and the rear panel.Cut

25、 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 CN421, CN431,CN441 and CN461 on the audio board.Disconnect the tuner board from connector CN411 on the au

26、dio 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.8CN411Tie bandDSP boardDVD boardVideo boardTuner boardAudioinput boardDSP boardCN481CN441CN431CN421CN481CN421CN431CN441CN411Tie bandCN421CN431CN441Audioinput boardDVD boardVideo boar

27、dTuner boardAudio boardCN461S Video boardCN461S Video boardCN461RX-7010VBK1-6Prior 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 a

28、udio 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 th

29、e 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 performing the following procedure, remove the top cover, the rear panel and audio board.Disconnect the harness from connector CN241 and CN203 on the pow

30、er 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 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.12powersupp

31、ly boardPower / FuseboardRelay board CN473Audio boardMain board rear sideMain boardHeat sink CN291CN203CN491HGCN471CN385CN402CN472Power transformerGGCN241IIIIJJLLKKKLLJCN208CN209CN210RX-7010VBK1-7Prior to performing the following procedure, remove the top cover and the rear panel.Remove the screw N

32、attaching the power / fuse board.Unsolder the power cord and other harnesses connected to 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

33、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.Removing the power transformer(See Fig.13)Prior to performing the following procedure, remove the top cover and the front panel

34、.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 (If necessary, cut off the band fixing the harness on the side of the base chassis).Remove

35、 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 transform

36、erMCN241SolderMSolderSolderNPower / fuse boardPower cordPower supplyboardNutHeadphone jackHeadphone jackTie bandSolderOOOSolderCN201CN291HookPower transformerboardFW201CN203RX-7010VBK1-8Prior to performing the following procedure, remove the top cover and the front panel assembly.Pull out the volume

37、 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 th

38、e 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

39、.16Fig.17Fig.18Front panel assemblyNutVolume knobSystem control boardPower switch boardQQCN714PJointJointJointJointJointJointHookHookOperation switch panelJointJointRX-7010VBK1-9Adjustment method1.Set the volume control to minimum during this adjustment.(No signal & No load)2.Set the surround mode O

40、FF.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 TP301s B216 and B217 (Lch) And,connect it between TP302s B218 and B219(Rch).4.30 minutes

41、later after power on, adjust VR301 for L-ch, or VR302 for R-ch so that the DC voltmeter value has 1mV10mV.1.Tuner range FM 87.5MHz108.0MHz AM(MW) 530kHz1710kHzTuner sectionPower amplifier sectionTP302(Rch)VR301 (Lch)VR302 (Rch)Heat sinkAdjustment of idling currentMeasurement locationTP301(Lch) , TP3

42、02(Rch)Adjustment partVR301(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 theamplifi

43、er and falling an internal temperature. * It is 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-7010VBK1-10 1 2 3 4 5 6 7 8 910113332313029282726252423121314151617181920212

44、24443424140393837363534SDOSI2CSMUTEBICKLRCKSDTI1SDTI2SDTI3SDTODAUXDFSDZF2/OVFRIN+RIN-LIN+LIN-ROUT1LOUT1ROUT2LOUT2ROUT3LOUT3NCDZFETVDDDVDDDVSSPDNTSTNCADIFCAD1CAD0LOOP1LOOP0/SDA/CDTIDIF1/SCL/CCLKDIF0/CSNP/SMCLKDZF1AVSSAVDDVREFHVCOM1.Pin layoutAK4527B (IC601) : A/D,D/A ConverterDescription of major ICs

45、AK4527BVQTop ViewNo. 1 2 3 4 5 6 7 8 9101112131415161718Pin 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 goe

46、s 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 Data Input PinDAC3 Audio Serial Data Input PinAudio Serial Data Output PinSub Audio Serial Data Input PinDouble Sp

47、eed 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 selectable by DZFM2-0 bits at serial mode.H : mode 0 (DZF is AND of all six channels)Output Buffer Power supply Pin,

48、 2.7V5.5VDigital Power Supply Pin, 4.5V5.5VDe-emphasis Pin, 0VPower-Down & Reset Pin When L, the AK4527B is powered-down and the control registers are reset to default state. If the state of P/S or CAD0-1 changes, then the AK4527B must be reset by PDN.Test Pin This pin should be connected to DVSS.Fu

49、nctionAK4527(1/2)I/OIIIII/OIIIOII-I-II2. Pin function (1/2)RX-7010VBK1-11No.1920212223242526272829303132333435363738394041424344Pin nameNCADIFCAD1CAD0LOUT3ROUT3LOUT2ROUT2LOUT1ROUT1LIN-LIN+RIN-RIN+DZF2OVFVCOMVREFHAVDDAVSSDZF1MCLKP/SDIF0CSNDIF1SCL/CCLKLOOP0SAD/CDTILOOP1No Connect No internal bonding.A

50、nalog Input Format Select PinH : Full-differential input, L : Single-ended inputChip Address 1 PinChip Address 0 PinDAC3 Lch Analog Output PinDAC3 Rch Analog Output PinDAC2 Lch Analog Output PinDAC2 Rch Analog Output PinDAC1 Lch Analog Output PinDAC1 Rch Analog Output PinLch Analog Negative Input Pi