Jvc-RX-7032-VSL-Service-Manual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 CONTENTS1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-

2、42 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-53 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3、1-64 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-135 TROUBLE 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 MULTI AMFMTAPE/CDRCDSETTING ADJUSTQUICK SPEAKERSETUP EXI

5、TSURROUNDDSPSURROUND/ DSPOFF231564897/P0 +10FRONTLMENUENTERFRONTRTESTCD DISCMIDNIGHTCENTER SUB WOOFERDIGITAL EQ SURR BACKSURRL SURRRSOUNDCH/ LEVEL TV VOLMUTINGDIMMERVOLUMECATV/DBSCONTROLTAPE/CDRCONTROLVCRCONTROLTV/VIDEOREC PAUSESLEEPRETURN FM MODE 100+REMOTE CONTROL RM-SRX7032RCATV/DBS VCR TV AUDIOD

6、SPOFFDVD MULTI CDANALOG/DIGITALBASS BOOSTTAPE/CDRFM/AMTV/DBS VCRSURROUNDEX/ESSURR/DSPA/V CONTROL RECEIVERINPUTMODEDIRECTANALOGDVD10/0/REW FF/TA/NEWS/INFODISPLAYMODE1-2 (No.MB003)SPECIFICATIONAmplifier Output Power At Stereo operation Front ch 100 W per channel, min. RMS, driven into 8 at 1 kHz, with

7、 no more than 0.8% total harmonic distortion (IEC268-3/DIN).At Surround operation Front ch 100 W per channel, min. RMS, driven into 8 at 1 kHz, with no more than 0.8% total harmonic distortion.Center ch 100 W, min. RMS, driven into 8 at 1 kHz, with no more than 0.8% total harmonic distortion.Surroun

8、d ch 100 W per channel, min. RMS, driven into 8 at 1 kHz, with no more than 0.8% total harmonic distortion.Surround Back ch 100 W, min. RMS, driven into 8 at 1 kHz, with no more than 0.8% total harmonic distortion.Audio Audio Input Sensitivity/Impedance (1 kHz)DVD IN, VCR IN, TV SOUND/DBS IN 200 mV/

9、47 kCD IN, TAPE/CDR IN 200 mV/47 kAudio Input(DIGITAL IN)*Coaxial DIGITAL 1 (DVD) 0.5 V(p-p)/75 Optical DIGITAL 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 k

10、Hz).Audio Output Level SUBWOOFER OUT 1 VRecording Output Level VCR OUT, TAPE/CDR OUT 200 mVDigital output Optical DIGITAL OUTSignal wave length 660 nmOutput level -21 dBm to -15 dBmSignal-to-Noise Ratio(66 IHF/DIN)DVD IN, VCR IN, TV SOUND/DBS IN 87 dB/67 dBCD IN, TAPE/CDR IN 87 dB/67 dBFrequencyResp

11、onse(8 )DVD IN, VCR IN, TV SOUND/DBS IN 20 Hz to 100 kHz (+1 dB, -3 dB)CD IN, TAPE/CDR IN 20 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 HzVideo Video Input Sensitivity/ImpedanceComposite videoDVD IN, VCR IN, TV SOUND/DB

12、S IN: 1 V(p-p)/75 S-video DVD 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 Level Composite videoVCR OUT,MONITOR OUT 1 V(p-p)/75 S-video VCR OUT,MONITOR OUT(Y: luminance) 1 V(p-p)/75 (C: chrominance, burst) 0.286 V(p-p)/75 Synchronization N

13、egativeSignal-to-Noise Ratio 45 dB(No.MB003)1-3Designs & specifications are subject to change without noticeFM tuner (IHF) Tuning Range 87.50 MHz to 108.00 MHzUsable Sensitivity Monaural 17.0 dBf (1.9 V/75 )50 dB Quieting Sensitivity Monaural 21.3 dBf (3.2 V/75 )Stereo 41.3 dBf (31.8 V/75 )Stereo Se

14、paration at REC OUT 35 dB at 1 kHzAM (MW) tuner Tuning Range 522 kHz to 1 629 kHzGeneral Power Requirements AC 230V , 50 HzPower Consumption 250 W (at operation) 2 W (in standby mode)Dimensions (W H D) 435 mm 157 mm 425 mmMass 12.1 kg1-4 (No.MB003)SECTION 1PRECAUTION1.1 Safety Precautions(1) This de

15、sign of this product 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 c

16、ircuits. Services should 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 th

17、emanufacture of responsibility 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 nec

18、essarily be obtained 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 a

19、nd by ( ) onthe Parts 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

20、 dressed with ties,clamps, 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 conf

21、irmedthat they have been 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.) t

22、o be sure the productis 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 a“Leakage Current Tester“, measure the leakage currentfrom each exposed metal parts of the cabinet, particular

23、-ly any exposed metal part 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

24、manner. Connect a 1,500 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

25、 a returnpath to the chassis, 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.). 1.2 Warning(1) This equipment has been designed and manufactu

26、red tomeet international 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.

27、(5) If mains voltage selector is provided, check setting for localvoltage.1.3 CautionBurrs 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.1.4 Critical parts for safetyIn regard with component

28、 parts appearing on the silk-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 ra

29、ting as specified by the manufacturer. (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

30、 does not describe SPECIFIC SERVICE INSUTRUCTIONS.1-6 (No.MB003)SECTION 3DISASSEMBLY3.1 Removing 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

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

32、rd wire from the connector CN400 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-se

33、mbly. (See Fig.2.)(5) From the bottom 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 coverA211BAC CCFront panel assemblyCard wireCN402Tie bandWireprotectionbo

34、ardCN400MiconboardPowersupplyboardCard wireDDFront panel assembly(No.MB003)1-73.3 Removing 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.

35、(2) Remove the twenty-six screws E, two screws F and threescrews G attaching the rear panel.Fig.43.4 Removing 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 o

36、f the main body, remove the stopperboards 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

37、 CN717 on the sur-round back board.(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.53.5 Removing the tuner, DSP board,

38、audio board, video board and S-video 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

39、 from the connector CN601 onthe micon 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 reliefEGE F

40、GEEERear panelG1212CN381CN205CN501Plastic rivetPlasticrivetStopperboardStopper boardTiebandCenter boardTiebandsFront board(L)Surround boardFront board(R)CN719CN717CN714CN722CN723MainboardI/O boardCN314TunerAudio boardCard wireCN601DSP boardCN303CN101Video boardS-video boardCN201 CN241Micon board1-8

41、(No.MB003)3.6 Removing the micon 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 mico

42、n board.(2) Disconnect the relay 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.

43、(6) Remove the three screws J attaching the transistors(Q921,Q931,Q941) to the chassis base.(7) Loosen the screw K attaching the micon board.Fig.73.7 Removing 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 ma

44、in body, remove the tie bandbundling 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 boardRelayboard

45、CN81Card wireCN931CN932HHHJTransistors(Q921,Q931,Q941)ChassisbaseKCN831Main boardTie bandCN813Main boardSpeaker boardCN814CN931CN932Micon board(No.MB003)1-93.8 Removing the main board(See Fig.9) Prior to performing the following procedures, remove the topcover.(1) From the top side of the main body,

46、 remove the tie bandsbundling the 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.

47、(5) Disconnect the parallel wires 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 frontbo

48、ard(L).(9) Disconnect the wire from 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.93.9 Removing the heat

49、sink(See Figs.10 and 11) Prior to 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) Remove the twelve screws Q attaching the heat sink. (SeeFig.11.)Fig.10Fig.11Tie bandWireprotectionboardMicon boardCard wireTie bandsCN811Pow