JVC-RX7032VSL-avr-sm 维修电路原理图.pdf

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1、SERVICE MANUALCOPYRIGHT 2003 VICTOR COMPANY OF JAPAN, LIMITEDNo.MB0032003/8AUDIO/VIDEO CONTROL RECEIVERMB00320037RX-7032VSLTABLE OF CONTENTS1PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

2、2SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-53DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-64

3、ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-135TROUBLE SHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4、. . 1-14Area SuffixE-Continental EuropeEN-Northern EuropeEV-Eastern EuropeMASTER VOLUMEPUSH OPENSUBWOOFER OUT ON/OFFSPEAKERS ON/OFFPHONES1STANDBYRX-7032V AUDIO/VIDEO CONTROL RECEIVERBASS BOOSTANALOG DIRECT2STANDBY/ONTV SOUND/DBSVCRDVDDVD MULTIAMFMTAPE/CDRCDSETTINGADJUSTQUICK SPEAKERSETUPEXITSURROUND

5、DSPSURROUND/ DSPOFF 231564897/P0+10FRONTLMENUENTERFRONTRTESTCD DISCMIDNIGHTCENTERSUB WOOFERDIGIT AL EQSURR BACKSURR LSURR RSOUNDCH/LEVELTV VOLMUTINGDIMMERVOLUMECA TV/DBSCONTROLT APE/CDRCONTROLVCRCONTROLTV/VIDEOREC PAUSESLEEPRETURNFM MODE100+REMOTE CONTROL RM-SRX7032RCATV/DBSVCRTVAUDIODSPOFFDVD MULTI

6、CDANALOG/DIGITALBASS BOOSTTAPE/CDRFM/AMTV/DBSVCRSURROUNDEX/ESSURR/DSPA/V CONTROL RECEIVERINPUTMODEDIRECTANALOGDVD10/0/REWFF/TA/NEWS/INFODISPLAYMODERadioFans.CN 收音机爱 好者资料库1-2 (No.MB003)SPECIFICATIONAmplifierOutput PowerAt Stereo operationFront ch100 W per channel, min. RMS, driven into 8 at 1 kHz, wi

7、th no more than 0.8% total harmonic distortion (IEC268-3/DIN).At Surround operationFront ch100 W per channel, min. RMS, driven into 8 at 1 kHz, with no more than 0.8% total harmonic distortion.Center ch100 W, min. RMS, driven into 8 at 1 kHz, with no more than 0.8% total harmonic distortion.Surround

8、 ch100 W per channel, min. RMS, driven into 8 at 1 kHz, with no more than 0.8% total harmonic distortion.Surround Back ch100 W, min. RMS, driven into 8 at 1 kHz, with no more than 0.8% total harmonic distortion.AudioAudio Input Sensitivity/Impedance (1 kHz)DVD IN, VCR IN, TV SOUND/DBS IN200 mV/47 kC

9、D IN, TAPE/CDR IN200 mV/47 kAudio Input(DIGITAL IN)*CoaxialDIGITAL 1 (DVD)0.5 V(p-p)/75 OpticalDIGITAL 2 (CD),DIGITAL 3 (TV),DIGITAL 4 (CDR)-21 dBm to -15 dBm (660 nm 30 nm)* Corresponding to Linear PCM, Dolby Digital, and DTS Digital Surround (with sampling frequency-32 kHz, 44.1 kHz, 48 kHz).Audio

10、 Output LevelSUBWOOFER OUT1 VRecording Output Level VCR OUT, TAPE/CDR OUT200 mVDigital outputOpticalDIGITAL OUTSignal wave length660 nmOutput level-21 dBm to -15 dBmSignal-to-Noise Ratio(66 IHF/DIN)DVD IN, VCR IN, TV SOUND/DBS IN87 dB/67 dBCD IN, TAPE/CDR IN87 dB/67 dBFrequencyResponse(8 )DVD IN, VC

11、R IN, TV SOUND/DBS IN20 Hz to 100 kHz (+1 dB, -3 dB)CD IN, TAPE/CDR IN20 Hz to 100 kHz (+1 dB, -3 dB)Equalization (5 bands)63 Hz, 250 Hz, 1 kHz, 4 kHz, 16 kHz (8 dB)Bass boost+6 dB 1.0 dB at 100 HzVideoVideo Input Sensitivity/ImpedanceComposite videoDVD IN, VCR IN, TV SOUND/DBS IN:1 V(p-p)/75 S-vide

12、oDVD IN, VCR IN,TV SOUND/DBS IN(Y: luminance)1 V(p-p)/75 (C: chrominance, burst) 0.286 V(p-p)/75 Video Output LevelComposite videoVCR OUT,MONITOR OUT 1 V(p-p)/75 S-videoVCR OUT,MONITOR OUT(Y: luminance)1 V(p-p)/75 (C: chrominance, burst) 0.286 V(p-p)/75 SynchronizationNegativeSignal-to-Noise Ratio45

13、 dBRadioFans.CN 收音机爱 好者资料库(No.MB003)1-3Designs & specifications are subject to change without noticeFM tuner (IHF) Tuning Range87.50 MHz to 108.00 MHzUsable SensitivityMonaural17.0 dBf (1.9 V/75 )50 dB Quieting SensitivityMonaural21.3 dBf (3.2 V/75 )Stereo41.3 dBf (31.8 V/75 )Stereo Separation at RE

14、C OUT35 dB at 1 kHzAM (MW) tuner Tuning Range 522 kHz to 1 629 kHzGeneralPower RequirementsAC 230V , 50 HzPower Consumption250 W (at operation) 2 W (in standby mode)Dimensions (W H D)435 mm 157 mm 425 mmMass12.1 kg1-4 (No.MB003)SECTION 1PRECAUTION1.1Safety Precautions(1) This design of this product

15、contains special hardware andmany circuits and components specially for safety purpos-es. For continued protection, no changes should be madeto the original design unless authorized in writing by themanufacturer. Replacement parts must be identical tothose used in the original circuits. Services sho

16、uld be per-formed by qualified personnel only.(2) Alterations of the design or circuitry of the product shouldnot be made. Any design alterations of the product shouldnot be made. Any design alterations or additions will voidthe manufacturers warranty and will further relieve themanufacture of respo

17、nsibility for personal injury or propertydamage resulting therefrom.(3) Many electrical and mechanical parts in the products havespecial safety-related characteristics. These characteris-tics are often not evident from visual inspection nor can theprotection afforded by them necessarily be obtained

18、by us-ing replacement components rated for higher voltage, watt-age, etc. Replacement parts which have these specialsafety characteristics are identified in the Parts List of Ser-vice Manual. Electrical components having such featuresare identified by shading on the schematics and by ( ) onthe Parts

19、 List in the Service Manual. The use of a substitutereplacement which does not have the same safety charac-teristics as the recommended replacement parts shown inthe Parts List of Service Manual may create shock, fire, orother hazards.(4) The leads in the products are routed and dressed with ties,cl

20、amps, tubings, barriers and the like to be separated fromlive parts, high temperature parts, moving parts and/orsharp edges for the prevention of electric shock and firehazard. When service is required, the original lead routingand dress should be observed, and it should be confirmedthat they have b

21、een returned to normal, after reassem-bling.(5) Leakage shock hazard testingAfter reassembling the product, always perform an isola-tion check on the exposed metal parts of the product (an-tenna terminals, knobs, metal cabinet, screw heads,headphone jack, control shafts, etc.) to be sure the product

22、is safe to operate without danger of electrical shock.Do notuse a line isolation transformer during this check. Plug the AC line cord directly into the AC outlet. Using aLeakage Current Tester, measure the leakage currentfrom each exposed metal parts of the cabinet, particular-ly any exposed metal p

23、art having a return path to thechassis, to a known good earth ground. Any leakage cur-rent must not exceed 0.5mA AC (r.m.s.). Alternate check methodPlug the AC line cord directly into the AC outlet. Use anAC voltmeter having, 1,000 per volt or more sensitivityin the following manner. Connect a 1,500

24、 10W resistorparalleled by a 0.15F AC-type capacitor between an ex-posed metal part and a known good earth ground.Measure the AC voltage across the resistor with the ACvoltmeter. Move the resistor connection to each exposed metalpart, particularly any exposed metal part having a returnpath to the ch

25、assis, and measure the AC voltage acrossthe resistor. Now, reverse the plug in the AC outlet andrepeat each measurement. Voltage measured any mustnot exceed 0.75 V AC (r.m.s.). This corresponds to 0.5mA AC (r.m.s.). 1.2Warning(1) This equipment has been designed and manufactured tomeet international

26、 safety standards.(2) It is the legal responsibility of the repairer to ensure thatthese safety standards are maintained.(3) Repairs must be made in accordance with the relevantsafety standards.(4) It is essential that safety critical components are replacedby approved parts.(5) If mains voltage sel

27、ector is provided, check setting for localvoltage.1.3CautionBurrs formed during molding may be left over on some partsof the chassis. Therefore, pay attention to such burrs in the case of pre-forming repair of this system.1.4Critical parts for safetyIn regard with component parts appearing on the si

28、lk-screenprinted side (parts side) of the PWB diagrams, the parts that areprinted over with black such as the resistor ( ), diode ( )and ICP ( ) or identified by the mark nearby are criticalfor safety. When replacing them, be sure to use the parts of thesame type and rating as specified by the manuf

29、acturer. (This regulation dose not Except the J and C version)Good earth groundPlace this probe on each exposedmetal part.AC VOLTMETER(Having 1000 ohms/volts,or more sensitivity)1500 10W0.15 F AC TYPE(No.MB003)1-5SECTION 2SPECIFIC SERVICE INSTRUCTIONSThis service manual does not describe SPECIFIC SE

30、RVICE INSUTRUCTIONS.1-6 (No.MB003)SECTION 3DISASSEMBLY3.1Removing the top cover(See Fig.1)(1) From the right and left sides of the main body, remove thefour screws A attaching the top cover.(2) From the back side of the main body, remove the threescrews B attaching the top cover.(3) Remove the top c

31、over in the direction of the arrow 2 whileextending the lower sections of the top cover in the direc-tion of the arrow 1.Fig.13.2Removing the front panel assembly(See Figs.2 and 3) Prior to performing the following procedures, remove the topcover.(1) Disconnect the card wire from the connector CN400

32、 on themicon board. (See Fig.2.)(2) Disconnect the card wire from the connector CN402 on thepower supply board. (See Fig.2.)(3) Remove the tie band and wire protection board fixing thecard wire. (See Fig.2.)(4) Remove the three screws C attaching the front panel as-sembly. (See Fig.2.)(5) From the b

33、ottom side of the main body, remove the fourscrews D attaching the front panel assembly. (See Fig.3.)(6) Remove the front panel assembly in the direction of the ar-row. (See Fig.3.)Fig.2Fig.3Top coverA211BACCCFront panel assemblyCard wireCN402Tie bandWireprotectionboardCN400MiconboardPowersupplyboar

34、dCard wireDDFront panel assembly(No.MB003)1-73.3Removing the rear panel(See Fig.4) Prior to performing the following procedures, remove the topcover.(1) From the back side of the main body, remove the strain re-lief from the rear panel in the direction of the arrow.(2) Remove the twenty-six screws E

35、, two screws F and threescrews G attaching the rear panel.Fig.43.4Removing the I/O board(See Fig.5) Prior to performing the following procedures, remove the topcover and rear panel.(1) Remove the two plastic rivets in the direction of the arrow1 from the top side of the main body, remove the stopper

36、boards in the direction of the arrow 2.(2) Remove the tie bands bundling the wires.(3) Disconnect the wire from the connector CN722 on the cen-ter board.(4) Disconnect the wire from the connector CN714 on the frontboard(L).(5) Disconnect the wire from the connector CN717 on the sur-round back board.

37、(6) Disconnect the wire from the connector CN719 on the frontboard(R).(7) Disconnect the wire from the connector CN723 on the mainboard.(8) Disconnect the connectors (CN205,CN381,CN501) on theI/O board in an upward direction.Fig.53.5Removing the tuner, DSP board, audio board, video board and S-video

38、 board(See Fig.6) Prior to performing the following procedures, remove the topcover, rear panel and I/O board.(1) Disconnect the card wire from the connector CN314 on theaudio board from the top side of the main body, take out thetuner.(2) Disconnect the DSP board from the connector CN601 onthe mico

39、n board.(3) Disconnect the audio board from the connectors(CN101,CN303) on the micon board.(4) Disconnect the video board from the connector CN201 onthe micon board.(5) Disconnect the S-video board from the connector CN241on the micon board.Fig.6Strain reliefEGEFGEEERear panelG1 112 2212 22CN381CN20

40、5CN501Plastic rivetPlasticrivetStopperboardStopper boardTiebandCenter boardTiebandsFront board(L)Surround boardFront board(R)CN719CN717CN714CN722CN723MainboardI/O boardCN314TunerAudio boardCard wireCN601DSP boardCN303CN101Video boardS-video boardCN201CN241Micon board1-8 (No.MB003)3.6Removing the mic

41、on board(See Fig.7) Prior to performing the following procedures, remove the topcover, rear panel, I/O board, tuner, DSP board, audio board,video board and S-video board.(1) From the top side of the main body, disconnect the cardwire from the connector CN400 on the micon board.(2) Disconnect the rel

42、ay board from the connectors CN81 onthe micon board.(3) Disconnect the parallel wire from the connectors CN931and CN932 on the micon board.(4) Disconnect the parallel wire from the connector CN831 onthe main board.(5) Remove the three screws H attaching the micon board.(6) Remove the three screws J

43、attaching the transistors(Q921,Q931,Q941) to the chassis base.(7) Loosen the screw K attaching the micon board.Fig.73.7Removing the speaker board(See Fig.8) Prior to performing the following procedures, remove the topcover and rear panel.(1) From the top side of the main body, remove the tie bandbun

44、dling the wires.(2) Disconnect the wires from the connectors (CN813,CN814)on the main board.(3) Disconnect the parallel wire from the connectors(CN931,CN932) on the micon board.(4) Take out the speaker board in the direction of the arrow.Fig.8CN400Micon boardRelayboardCN81Card wireCN931CN932HHHJTran

45、sistors(Q921,Q931,Q941)ChassisbaseKCN831Main boardTie bandCN813Main boardSpeaker boardCN814CN931CN932Micon board(No.MB003)1-93.8Removing the main board(See Fig.9) Prior to performing the following procedures, remove the topcover.(1) From the top side of the main body, remove the tie bandsbundling th

46、e wires.(2) Remove the tie band and wire protection board bundlingthe card wire.(3) Disconnect the wire from the connector CN811 on the pow-er transformer board 1.(4) Disconnect the relay board from the connectors (CN71,CN81) on the power supply board and micon board.(5) Disconnect the parallel wire

47、s from the connectors(CN831,CN881) on the main board.(6) Disconnect the wires from the connectors(CN723,CN813,CN814) on the main board.(7) Disconnect the wire from the connector CN722 on the cen-ter board.(8) Disconnect the wire from the connector CN714 on the frontboard(L).(9) Disconnect the wire f

48、rom the connector CN717 on the sur-round back board.(10) Disconnect the wire from the connector CN719 on the frontboard(R).(11) Remove the screw K, five screws L, screw M and twoscrews N attaching the main board.(12) Take out the main board.Fig.93.9Removing the heat sink(See Figs.10 and 11) Prior to

49、 performing the following procedures, remove the topcover and main board.(1) From the reverse side of the main board, remove the twoscrews P attaching the main board to the heat sink. (SeeFig.10.)(2) Disconnect the connectors (CN701-CN706) on the mainboard, remove the main board. (See Fig.10.)(3) Re

50、move the twelve screws Q attaching the heat sink. (SeeFig.11.)Fig.10Fig.11Tie bandWireprotectionboardMicon boardCard wireTie bandsCN811Powertransformerboard 1CN71CN81RelayboardPowersupplyboardCN831CN881MainboardCN723CN814CN813Center boardCN722Front board(L)CN714Surround boardCN717Front board(R)CN719