Jvc-RX-9010-VBK-Service-Manual电路原理图.pdf

SERVICE MANUALAUDIO/VIDEO CONTROL RECEIVERNo.20940Apr. 2001COPYRIGHT 2001 VICTOR COMPANY OF JAPAN, LTD.RX-9010VBKRX-9010VBKJ U.S.A.Area SuffixContentsSafety precautions -1-2Importance administering point on the safety - 1-3Disassembly method -1-4Adjustment method -1-10Self-diagnose function -1-11Description of major ICs -1-13 30DIGITALCONTROLDOWN UPEFFECT SETTINGDIGITALEQTV SOUND/DBSVIDEOVCR 2VCR 1DVDDVD MULTIMIDNIGHT MODEDSP MODES-VIDEO VIDEOVIDEOLAUDIORSURROUND ON/OFFSUBWOOFER OUT ON/OFFSPEAKERS ON/OFFFM/AM TUNING FM/AM PRESET FM MODE MAIN ROOM ON/OFF SUB ROOM ON/OFF SUB ROOM CONTROL DIMMERMEMORY2 PHONESSTANDBYPOWERUSB AUDIOINPUTANALOG/DIGITALINPUT ATTFM / AMUSB AUDIOTAPE / MDCDRCDPHONOLEVELADJUSTRX-9010V AUDIO/VIDEO CONTROL RECEIVERLINE DIRECTBASS BOOSTMASTER VOLUMEDIGITALSURROUND DIGITAL1SOURCE NAMESOURCE NAMEMAIN ROOMSUB ROOMCHANNELTV/VIDEOMUTINGDVDON/OFF ON/OFF POWER POWERSTANDBYTV/CATV/DBS VCR1ONDVD MULTI CDCDRPHONOTAPE/MDUSB AUDIOANALOG/DIGITAL LBALANCER EFFECTROOM SIZESOUNDTESTLINE DIRECT MIDNIGHT MODESLEEP DIMMERFM MODEDSP BASS BOOSTSURROUNDRETURN 100+ON/OFF MODECENTER TONEINPUTLIVENESSSETMENUDVDMENUEXITTEXTDISPLAY12345678910 +100TV VOL VOLUMETUNINGSTOP PAUSEFF/REWRECPLAYDOWN UPRM-SRX9010J REMOTE CONTROLA/V CONTROL RECEIVERVCR 1 VCR 2FM/AMVIDEOTV/DBSSUB ROOMMAIN ROOMSUB ROOMMAIN ROOM CONTROLTVCATV/DBSCENTER SUBWFRLEVEL+LEVELREAR·LDIGITAL EQREAR·RRX-9010VBK1-21. This design of this product contains special hardware and many circuits and components specially for safety purposes. For continued protection, no changes should 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 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 products 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 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 the 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 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-assembling 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 transformer 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 current 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 part 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 in 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 these 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 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.In regard with component parts appearing on the silk-screen printed side (parts side) of the PWB diagrams, the parts that are printed over with black such as the resistor ( ), diode ( ) and ICP ( ) or identified by the “ “ mark nearby are critical for safety. When replacing them, be sure to use the parts of the same type and rating as specified by the manufacturer. (Except the JC version)http:/getMANUAL.comRX-9010VBK1-3Caution: 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 6.3A/125V, et 2A/125V pour F202 et F203. Ce sont des fusibles suretes qui functionnes rapide.Importance administering point on the safety LVA10222-A3LVA10222-A6EP1FC1 FC2PW17PW18 PW19PW20PW26PW30R1TA1TA2B3141B3142B3143 B3144 B3145 B3146 B3147B3148 B3151 B3152B3149B3150CN55CN56CN811B3191D67FC61FC62FC63FC64R61B3192RY62RY631111121131211221231311321331346.3A-125V2A-125V2A-125VRX-9010VBK1-4Remove 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 outward.1.2.3.Disassembly methodRemoving the top cover (See Fig.1)Prior to performing the following procedure, remove the top cover.Disconnect the card wire from connector CN400 on the audio board and CN402 on the power supply board 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.Remove the screw a fixing a bonding ground.1.2.3.4.5.Removing the front panel assembly (See Fig.2 to 4)Fig.1Fig.2Fig.3A 2A 2BTop coverCPower supply boardAudio boardCN400MainboardTie bandDCFront panel assemblyFront panel assemblyDCN402Fig.4Front panel assemblyHeadphone jackaRX-9010VBK1-5Prior to performing the following procedure, remove the top cover and the rear panel.Cut off the tie band fixing the harness.Disconnect the connect CN501, CN243, CN205, CN381, CN361 on the DVD board.Disconnect the harness from connector CN721, CN722 and CN723 on the main board.Disconnect the harness from connector CN1 on the antenna unit and remove the antenna unit.Disconnect the harness from connector CN491 on the relay board.Disconnect the tuner board and audio board from connector CN101 and CN301 on the audio board.Pull out the video audio board, video board, S-video board.Disconnect the DSP board from connector CN601 on the audio board.1.2.3.4.5.6.7.8.Removing each board connected to the rear side of the audio board(See Fig.6 to 12)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 thirty five screws E and a hexagon nut b attaching the each boards to the rear panel on the back of the body.Remove the three screws F attaching the rear panel on the back of the body.1.2.3.Removing the rear panel (See Fig.5)Fig.6Fig.7Tie bandCN723CN361CN381 CN243 CN501CN721 CN722CN205Fig.8DVD boardCN1Main boardAntenna unitCN491Relay boardFig.5EFEFFCord stopperRear panelEEEbDVD boardRX-9010VBK1-6Prior to performing the following procedure, remove the top cover and the rear panel.Removing the audio board(See Fig.13 to 14)Disconnect the harness from connector CN813 and CN814 on the main board.Disconnect the card wire from connector CN931 and CN932 on the audio board.Cut off the tie band fixing the harness.Disconnect the relay board from the audio board and the power supply board. (CN71,CN81)Disconnect the card wire from connector CN831 on the main board.Remove the three screws G attaching the audio board assembly.Remove the screw H attaching the audio board assembly.1.2.3.4.5.6.7.Fig.11 Fig.12powersupply boardPower / FuseboardRelay board Audio boardCN71CN81HCN814 CN813CN931/ 932Power transformerGGTie bandCN831MainboardFig.13DSP boardCN601Video boardS Video boardVideo audioboardFig.14Fig.9CN101Video boardTunerboardS Video boardFig.10CN301CN206CN416CN244CN303CN201CN241Audio boardAudio inputboardVideo audioboardRX-9010VBK1-7Remove the two screws L attaching the rear side of main board from the heat sink .Remove the ten screws K attaching each amp board from the heat sink.1.2.Removing the Amp board (See Fig.16 to 17)Prior to performing the following procedure, remove the top cover, the rear panel and audio board.Cut off the tie band fixing the harness.Disconnect the harness from connector CN811 on the power supply board respectively.Disconnect the harness from connector CN881 on the main board.NOTE:In order to prevent the wire of CN881 from touching to the wire of CN813,the wire of CN881 is secured by tape. This is one of the preventive measuresfor possible troubles of the remote controller.When assembling the unit,secure the wire of CN881 with the original tape so as to prevent both wire from touching each other.Remove the four screws I and the two screws J attaching the main board.1.2.3.4.Removing the main board (See Fig.15)Fig.15Main boardrear sideHeat sink K KKLLFig.16Fig.17MainboardICN881IJJJIITie bandCN811CN813Heat sink RX-9010VBK1-8Prior to performing the following procedure, remove the top cover and the front panel.Remove the one nut attaching the headphone jack of the power supply board on the front side of the body.Disconnect the card wire from connector CN402 on the power supply board.Remove 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.19 to 20)Prior to performing the following procedure, remove the top cover and the rear panel.Remove the screw N 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.18)Prior to performing the following procedures, remove the top cover.Unsolder the two harnesses connected to the power transformer.Disconnect the harness from connector CN55 and CN56 on the power transformer board.Remove the four screws M attaching the power transformer.1.2.3.Removing the power transformer(See Fig.18)Fig.19Fig.20Power supplyboardNutHeadphone jackHeadphone jackTie bandOOOSolderHookTie bandPower supplyboardCN402Fig.18Powersupply boardCN55 / 56Power transformerMSolderMSolderNPower / fuse boardPower cordPower transformerboardRX-9010VBK1-9Prior to performing the following procedure, remove the top cover and the front panel assembly.Pull out the volume 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.Remove the two screws Q attaching the switch board.Remove the cords from the three hooks a.Remove the eight screws R attaching the system control board on the back of the front panel.On the back of the front panel, release the four joints by pushing the joint tabs inward. Remove the operation switch panel toward the front.Disconnect the harness from connector CN420 and CN422 on the system control board.Release the two hooks b attaching the system control board.1.2.3.4.5.6.7.8.Removing the system control board / power switch board (See Fig.21 to 23)Matters that require attention during replacement of IC400 (See Fig.24 to 25)In case where there is a resistance array:Both onetime IC and mask IC can be usedIn case where there is no resistance array:Only mask IC can be usedSystem control board reverse sideSystem control board top viewFig.21Fig.22Fig.23Front panel assemblyNutVolume knobSystem control boardPower switchboardRRCN422PJointJoint JointJointHook bHook bOperation switch panelQCN420SwitchboardRHook aCordsResistance arrayIC400Fig.24Fig.25RX-9010VBK1-10Adjustment method1. Prior to turning the power ON, fully turn the adjusting resistor (VR787(Lch),VR788(Rch) counterclockwise direction and connect the DC voltmeter to the measuring terminal(B2204-B2205(Lch) , B2213-2214(Rch).2. Set the surround mode OFF.3. Adjust the resistor so that the measured value becomes 2mV immediately after turning the power ON.4. When the idling current has been stable (about 30 minutes after the power is turned ON), confirm that the measured value falls within 1.0mV 10mV(2.3mV).Power amplifier sectionB2213, B2214 (Rch)VR787 (Lch)VR788 (Rch)Heat sinkAdjustment of idling currentMeasurement terminal B2204-B2205(Lch) , B2213-2214(Rch)Adjustment volume VR787(Lch) , VR788(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 theamplifier and falling an internal temperature. * It is not abnormal though the idling current might not become 0mA even if it is finished to turn variableresistance (VR787,VR788) in the direction of count