JVC-RXDP20VSL-avr-sm 维修电路原理图.pdf

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1、SERVICE MANUALCOPYRIGHT 2003 VICTOR COMPANY OF JAPAN, LIMITEDNo.220192003/10AUDIO/VIDEO CONTROL RECEIVER22019200310RX-DP20VSLTABLE OF CONTENTS1PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

2、-42SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-63DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-

3、74ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-195TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4、. . . 1-22AUDIO/VIDEO CONTROL RECEIVERRX-DP20VSTANDBY/ONSTANDBYPHONESDIMMERCC CONVERTERDOORUPDOORDOWNMASTER VOLUMES-VIDEODIGITALVIDEOLAUDIORVIDEOCHANNELTV/VIDEOMUTINGDVDDVDTV/DBSVCR 1AUDIODVD MULTICDCDRPHONOTAPE/MDEXT 7.1CHANALOG/DIGITALCC CONVERTEREFFECTLIVENESSSOUNDTESTTHXEX/ES/7.1ANALOG DIRECTSLE

5、EPDIMMERFM MODEDSPSURR/DSPSURROUNDRETURN100+OFFINPUTSETSETUPMENUADJUSTMENUDVDMENUEXITTEXTDISPLAY1234567/P8910+100TV VOLVOLUMEPTY SEARCHSTOPPAUSETA/NEWS/INFODISPLAY MODELIGHTFF/ REWRECPLAYPTYPTYRM-SRXDP20R REMOTE CONTROLA/V CONTROL RECEIVERVCR 1VCR 2FM/AMVIDEOTV/DBSTRANSMITLEARNLEARNTVCATV/DBSArea Su

6、ffixB - U.K.E - Continental EuropeEN - Northern EuropeEV - Eastern EuropeRadioFans.CN 收音机爱 好者资料库1-2 (No.22019)SPECIFICATIONAmplifierOutput PowerAt Stereo operation(Analog Direct On)Front channels120 W per channel, min. RMS, driven into 8 , 20 Hz to 20 kHz with no more than 0.02% total harmonic disto

7、rtion.120 W per channel, min. RMS, driven into 4 , 20 Hz to 20 kHz with no more than 0.07% total harmonic distortion.130 W per channel, min. RMS, driven into 8 at 1 kHz, with no more than 0.8% total harmonic distortion. (IEC 268-3/DIN)At Surround operation(Analog Direct On)Front channels120 W per ch

8、annel, min. RMS, driven into 8 , 20 Hz to 20 kHz with no more than 0.02% total harmonic distortion. Center channel120 W, min. RMS, driven into 8 , 20 Hz to 20 kHz with no more than 0.02% total harmonic distortion.Surround channels120 W per channel, min. RMS, driven into 8 , 20 Hz to 20 kHz with no m

9、ore than 0.02% total harmonic distortion.Surround back channels 120 W per channel, min. RMS, driven into 8 , 20 Hz to 20 kHz with no more than 0.02% total harmonic distortion.AudioAudio Input Sensitivity/Impedance (1 kHz)PHONO IN (MC):0.25 mV/100 PHONO IN (MM):2.5 mV/47 kCD IN, CDR IN, TAPE/MD IN, E

10、XT 7.1CH IN:200 mV/47 kDVD IN, VCR 1 IN, VCR 2 IN, TV SOUND/DBS IN, VIDEO:200 mV/47 kAudio Input (DIGITAL IN)* Coaxial1(DVD), 2(CD), 3(TV/DBS):0.5 V(p-p)/75 Optical4(CDR), 5(MD), 6(VCR1):-21 dBm to -15 dBm (660 nm 30 nm)* Corresponding to Linear PCM, Dolby Digital, and DTS Digital Surround (with sam

11、pling frequency - 32 kHz, 44.1 kHz, 48 kHz)Audio Output LevelPREOUT:1 VRecording Output LevelTAPE/MD OUT, CDR OUT, VCR 1 OUT, VCR 2 OUT:200 mVDigital outputOptical:DIGITAL OUTSignal wave length:660 nmOutput level:-21 dBm to -15 dBmSignal-to-Noise Ratio(66 IHF/78 IHF)(Analog Direct On)PHONO IN (MC):6

12、0 dB/72 dB (at REC OUT)PHONO IN (MM):72 dB/80 dB (at REC OUT)CD IN, CDR IN, TAPE/MD IN, EXT 7.1CH IN:92 dB/80 dB:92 dB/80 dBDVD IN, VCR 1 IN, VCR 2 IN, TV SOUND/DBS IN, VIDEOFrequency Response(8 )PHONO IN (MC) :20 Hz to 20 kHz (1 dB)PHONO IN (MM):20 Hz to 20 kHz (1 dB)CD IN, CDR IN, TAPE/MD IN, EXT

13、7.1CH IN:10 Hz to 100 kHz (+1 dB, -3 dB)DVD IN, VCR 1 IN, VCR 2 IN, TV SOUND/DBS IN, VIDEO:10 Hz to 100 kHz (+1 dB, -3 dB)RIAA Phono Equalization 1.0 dB (20 Hz to 20 kHz)VideoVideo Input Sensitivity/ImpedanceComposite video:DVD IN, VCR 1 IN, VCR 2 IN, TV SOUND/DBS IN, VIDEO1 V(p-p)/75 S-video:DVD IN

14、, VCR 1 IN, VCR 2 IN, TV SOUND/DBS IN, VIDEO(Y: luminance)1 V(p-p)/75(C: chrominance, burst)0.286 V(p-p)/75 Component:1 IN (DVD), 2 IN,3 IN(Y: luminance):1 V(p-p)/75 (PB, PR):0.7 V(p-p)/75 Video Output LevelComposite video:VCR 1 OUT,VCR 2 OUT,MONITOR OUT1 V(p-p)/75 S-video:VCR 1 OUT, VCR 2 OUT, MONI

15、TOR OUT(Y: luminance):1 V(p-p)/75(C: chrominance, burst):0.286 V(p-p)/75 Component:MONITOR OUT(Y: luminance):1 V(p-p)/75 (PB, PR): 0.7 V(p-p)/75 SynchronizationNegativeSignal-to-Noise Ratio45 dBTuning Range87.5 MHz to 108.0 MHzUsable SensitivityMonaural:17.0 dBf (1.95 V/75 )50 dB Quieting Sensitivit

16、y Monaural:21.3 dBf (3.2 V/75 )Stereo:41.3 dBf (31.5 V/75 )Signal-to-Noise Ratio (IHF-A weighted)Monaural:78 dB at 85 dBfStereo:73 dB at 85 dBfRadioFans.CN 收音机爱 好者资料库(No.22019)1-3Designs & specifications are subject to change without notice.Total Harmonic Distortion Monaural:0.4% at 1 kHzStereo:0.6%

17、 at 1 kHzStereo Separation at REC OUT35 dB at 1 kHzAlternate Channel Selec-tivity60 dB (400 kHz)Frequency Response30 Hz to 15 kHz (+0.5 dB, -3 dB)AM (MW/LW) tunerTuning RangeMW:522 kHz to 1 629 kHzLW:144 kHz to 288 kHzUsable SensitivityLoop antenna: 400 V/mSignal-to-Noise Ratio50 dB (100 mV/m)Genera

18、lPower Requirements AC 230V, 50 HzPower Consumption600 W/690 VA (at operation), 2.7 watts (in standby mode)Dimensions (W H D)445 mm 177 mm 475 mmMass24 kg1-4 (No.22019)SECTION 1PRECAUTION1.1Safety Precautions(1) This design of this product contains special hardware andmany circuits and components sp

19、ecially 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 should be per-formed by qualified personnel only.(2) Alteration

20、s 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 responsibility for personal injury or propertydamage resulting th

21、erefrom.(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 by us-ing replacement components rated for higher voltage, w

22、att-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 List in the Service Manual. The use of a substitutereplacem

23、ent 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,clamps, tubings, barriers and the like to be separated fromliv

24、e 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 been returned to normal, after reassem-bling.(5) Leakage shoc

25、k 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 productis safe to operate without danger of electrical shock.Do not

26、use 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 part having a return path to thechassis, to a known good eart

27、h 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 10W resistorparalleled by a 0.15F AC-type capacitor between

28、 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 chassis, and measure the AC voltage acrossthe resistor. Now, r

29、everse 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 safety standards.(2) It is the legal responsibility of the

30、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 selector is provided, check setting for localvoltage.1.3Caution

31、Burrs 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 silk-screenprinted side (parts side) of the PWB diagrams, the

32、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 manufacturer. (This regulation dose not Except the J and C versio

33、n)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.22019)1-51.5 Safety Precautions (U.K only)(1) This design of this product contains special hardware and many circuits and components specially for safety pu

34、rposes. For con-tinued protection, no changes should be made to the original design unless authorized in writing by the manufacturer. Replace-ment parts must be identical to those used in the original circuits.(2) Any unauthorised design alterations or additions will void the manufacturers guarantee

35、; furthermore the manufacturer cannotaccept responsibility for personal injury or property damage resulting therefrom.(3) Essential safety critical components are identified by ( ) on the Parts List and by shading on the schematics, and must neverbe replaced by parts other than those listed in the m

36、anual. Please note however that many electrical and mechanical parts inthe product have special safety related characteristics. These characteristics are often not evident from visual inspection. Partsother than specified by the manufacturer may not have the same safety characteristics as the recomm

37、ended replacement partsshown in the Parts List of the Service Manual and 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 e

38、dges for the prevention of electric shock and fire hazard. When service isrequired, the original lead routing and dress should be observed, and it should be confirmed that they have been returned tonormal, after re-assembling.1.5.1Warning(1) Service should be performed by qualified personnel only.(2

39、) This equipment has been designed and manufactured to meet international safety standards.(3) It is the legal responsibility of the repairer to ensure that these safety standards are maintained.(4) Repairs must be made in accordance with the relevant safety standards.(5) It is essential that safety

40、 critical components are replaced by approved parts.(6) If mains voltage selector is provided, check setting for local voltage.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.1-6 (No.220

41、19)SECTION 2SPECIFIC SERVICE INSTRUCTIONSThis service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.(No.22019)1-7SECTION 3DISASSEMBLY3.1Main body section3.1.1Removing the top cover(See Fig.1)(1) Remove the eight screws A attaching the top cover on bothsides of the body.(2) Remove the three

42、screws B on back of the body.(3) Remove the top cover from behind in the direction of thearrow while pulling both sides outward.Fig.13.1.2Removing the front panel assembly(See Fig.2 and 3) Prior to performing the following procedure, remove the topcover.(1) Cut off the tie band 1 fixing the harness.

43、(2) Remove the screw a, and remove the lug wire.(3) Remove the three screws C attaching the front panelassembly.(4) Remove the four screws D attaching the front panelassembly on bottom of the body. Detach the front panelassembly toward the front.(5) Disconnect the harness from the connector CN971,CN

44、977, CN983 and CN985 on the system control board(see fig.5), CN973 on the front AV in board and CN373 onthe front DIGITAL in board (see 2-3.Front panel assemblysection/ fig.2). 3.1.3Removing the V compo 2 board & tuner unit & compulink board(See Fig.2 and 4) Prior to performing the following procedu

45、re, remove the topcover.(1) Disconnect the harness from the connector CN581 on theV compo 2 board.Remove the two screws E attaching the V compo 2 boardto the rear panel.(2) Disconnect the card wire from the connector CN1 on thetuner unit.Remove the two screws E attaching the tuner unit to therear pa

46、nel.(3) Disconnect the harness from the connector CN301 on thecompu link board.Remove the two screws E attaching the compu link boardto the rear panel.3.1.4Removing the Y/C separator board(See Fig.2) Prior to performing the following procedure, remove the topcover.(1) Cut off the tie band 2 fixing t

47、he harness.(2) Draw out up the Y/C separator board, disconnecting theconnectors CN481 and CN482 on the Y/C separator board.Fig.2Fig.3A(both sides)A(both sides)BTop coverCa(fixing thelug wire)Tie band 1 Harnessband Tuner unitCompu link boardAudio 7.1chin boardV compo 2 boardY/C separatorboardCN1CFron

48、t panel assemblyCN581CN481CN482CN301CN201Tie band 2 Tie band 3 Audio signal 1 boardDDFront panelassembly1-8 (No.22019)3.1.5Removing the audio 7.1ch in board(See Fig.2 and 4) Prior to performing the following procedure, remove the topcover.(1) Cut off the tie band 2 & 3 fixing the harness.(2) Disconn

49、ect the harness from the connector CN201 on theaudio signal 1 board.(3) Remove the two screws E attaching the audio 7.1ch inboard to the rear panel.3.1.6Removing the rear panel(See Fig.4) Prior to performing the following procedure, remove the topcover.(1) Unsolder the two solder parts on the AC inl

50、et.(2) Remove the thirty-eight screws E & E & E & E & Eattaching each board to the rear panel.(3) Remove the thirteen screws F attaching the rear panel onthe back of the body and bottom.Fig.43.1.7Removing the system control board(See Fig.5 and 6) Prior to performing the following procedure, remove t