Jvc-RXDP-20-VSL-Service-Manual电路原理图.pdf

SERVICE MANUALCOPYRIGHT © 2003 VICTOR COMPANY OF JAPAN, LIMITEDNo.220192003/10AUDIO/VIDEO CONTROL RECEIVER22019200310RX-DP20VSLTABLE OF CONTENTS1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-42 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-63 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-74 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-195 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-22AUDIO/VIDEO CONTROL RECEIVERRX-DP20VSTANDBY/ONSTANDBYPHONESDIMMERCC CONVERTERDOORUPDOORDOWNMASTER VOLUMES-VIDEODIGITAL VIDEO LÑAUDIOÑRVIDEOCHANNELTV/VIDEOMUTINGDVDDVDTV/DBS VCR 1AUDIODVD MULTI CDCDRPHONOTAPE/MDEXT 7.1CHANALOG/DIGITALCC CONVERTEREFFECTLIVENESSSOUNDTESTTHXEX/ES/7.1 ANALOG DIRECTSLEEP DIMMERFM MODEDSP SURR/DSPSURROUNDRETURN 100+OFFINPUTSETSETUPMENUADJUSTMENUDVDMENU EXITTEXTDISPLAY1234567/P 8910 +100TV VOL VOLUMEPTY SEARCHSTOP PAUSETA/NEWS/INFODISPLAY MODELIGHTFF/ REWRECPLAYPTY PTYRM-SRXDP20R REMOTE CONTROLA/V CONTROL RECEIVERVCR 1 VCR 2FM/AMVIDEOTV/DBSTRANSMITLEARNLEARNTVCATV/DBSArea SuffixB - U.K.E - Continental EuropeEN - Northern EuropeEV - Eastern Europe1-2 (No.22019)SPECIFICATIONAmplifierOutput PowerAt Stereo operation(Analog Direct On)Front channels 120 W per channel, min. RMS, driven into 8 , 20 Hz to 20 kHz with no more than 0.02% total harmonic distortion.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 channels 120 W per channel, min. RMS, driven into 8 , 20 Hz to 20 kHz with no more than 0.02% total harmonic distortion. Center channel 120 W, min. RMS, driven into 8 , 20 Hz to 20 kHz with no more than 0.02% total harmonic distortion.Surround channels 120 W per channel, min. RMS, driven into 8 , 20 Hz to 20 kHz with no more 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, EXT 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)* Coaxial 1(DVD), 2(CD), 3(TV/DBS):0.5 V(p-p)/75 Optical 4(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 sampling frequency - 32 kHz, 44.1 kHz, 48 kHz)Audio Output Level PREOUT:1 VRecording Output Level TAPE/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):60 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 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, 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 Level Composite video:VCR 1 OUT,VCR 2 OUT,MONITOR OUT 1 V(p-p)/75 S-video:VCR 1 OUT, VCR 2 OUT, MONITOR 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 Synchronization NegativeSignal-to-Noise Ratio 45 dBTuning Range 87.5 MHz to 108.0 MHzUsable Sensitivity Monaural:17.0 dBf (1.95 µV/75 )50 dB Quieting Sensitivity Monaural:21.3 dBf (3.2 µV/75 )Stereo:41.3 dBf (31.5 µV/75 )Signal-to-Noise Ratio (IHF-A weighted)Monaural:78 dB at 85 dBfStereo:73 dB at 85 dBf(No.22019)1-3Designs 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 manual. 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 recommended 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 edges 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.1.5.1 Warning(1) Service should be performed by qualified personnel only.(2) 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 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.22019)SECTION 2SPECIFIC SERVICE INSTRUCTIONSThis service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.(No.22019)1-7SECTION 3DISASSEMBLY3.1 Main body section3.1.1 Removing 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 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.13.1.2 Removing 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.(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,CN977, 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). 3.1.3 Removing the V compo 2 board & tuner unit & compulink board(See Fig.2 and 4) Prior to performing the following procedure, 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 panel.(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.3.1.4 Removing 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 the 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 separatorboardCN1CFront panel assemblyCN581CN481CN482CN301CN201Tie band 2 Tie band 3 Audio signal 1 boardDDFront panelassembly1-8 (No.22019)3.1.5 Removing 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) Disconnect 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.3.1.6 Removing the rear panel(See Fig.4) Prior to performing the following procedure, remove the topcover.(1) Unsolder the two solder parts on the AC inlet.(2) Remove the thirty-eight screws E & E' & E'' & E''' & E''''attaching each board to the rear panel.(3) Remove the thirteen screws F attaching the rear panel onthe back of the body and bottom.Fig.43.1.7 Removing the system control board(See Fig.5 and 6) Prior to performing the following procedure, remove the topcover and front panel assembly.(1) Disconnect the card wires and harness from the connectorCN963, CN964 and CN981 on the system control board.(2) Cut off the tie bands fixing the harness.(3) Disconnect the harness from the connector CN45 on thepower supply 2 board and CN25 on the power/ fuse board.(4) Disconnect the connector CN324 on the audio signal 2board and CN234 on the audio signal 1 board.(5) Remove the three plastic rivet.Fig.5Fig.6EFE'''EFFFFRear panelRedBlackEEE''E''''E'EEFSolder partAC inletCN963CN981CN971CN977CN983CN964CN985System control boardPlastic rivetPlastic rivetCN324CN25CN234CN224CN45(on power supply 2 board)Power/ fuseboardAudio signal 1 boardAudio signal 2 boardCN203Tie bandTie band(No.22019)1-93.1.8 Removing the DSP board & shield cover(See Fig.7) Prior to performing the following procedure, remove the topcover, rear panel and front panel assembly.(1) Disconnect the connector CN631 on the DSP board.(2) Disconnect the connector CN203 on the audio signal 1board.And cut off the tie bands fixing the harness.(3) Removing the two plastic rivet, and disconnect theconnector CN633, CN643 and CN635 on the DSP board.(4) Removing the screw G attaching the shield cover andremove the shield cover.Fig.73.1.9 Removing the audio signal 1 board(See Fig.8) Prior to performing the following procedure, remove the topcover, rear panel and DSP board.(1) Disconnect the harness from the connector CN202,CN204, CN234, CN224, CN207 and CN223 on the audiosignal 1 board.(2) Remove the plastic rivet.(3) Disconnect the connector CN205, CN221 and CN206 onthe audio signal 1 board.Fig.8Shield coverTop viewCN631CN635CN643Plastic rivetDSP boardGCN203CN633Audio signal 1 boardAudio signal 1 boardCN234Plastic rivetCN224CN204CN202CN205CN221CN206CN223CN2071-10 (No.22019)3.1.10 Removing the audio signal 2 board & video board & S video board(See Fig.9 to 11) Prior to performing the following procedure, remove the topcover, rear panel, Y/C separator board, DSP board and audiosignal 1 board.(1) Disconnect the harness from the connector CN973 on thefront AV in board (see 2-3.Front panel assembly section/fig.2).(2) Disconnect the harness from the connector CN324 on theaudio signal 2 board.(3) Remove the audio signal 2 board from the connector CN15and CN6 on the input base board.(4) Remove the video board from the connector CN7 on theinput base board.(5) Remove the S video board from the connector CN8 on theinput base board.3.1.11 Removing the V compo 1 board(See Fig.9 to 11) Prior to performing the following procedure, remove the topcover and rear panel.(1) Remove the V compo 1 board from the connector CN9 onthe input base board.Fig.9Fig.10Fig.11Video boardV compo 1 boardAudio signal 2 boardS video boardCN324Input base boardFRONTConnection between the Input base board and each board.CN15/CN6CN7CN8CN9Audio signal 2 board (CN325/CN321)Video board (CN401)S video board (CN451)V compo 1 board (CN501)Input base boardCN15CN6CN7CN8CN9FRONT