JVC-RVNB50-cs-sm 维修电路原理图.pdf

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1、SERVICE MANUALCOPYRIGHT 2010 Victor Company of Japan, LimitedNo.MB7232010/4POWERED WOOFER CD SYSTEMMB72320104 SERVICE MANUALRV-NB50B, RV-NB50E, RV-NB50EN, RV-NB50EV, RV-NB51WE, RV-NB51WEN, RV-NB51WEV, RV-NB52BB, RV-NB52BE, RV-NB52BEN, RV-NB52BEV, RV-NB50J, RV-NB50C, RV-NB50US, RV-NB50A, RV-NB52BJCOP

2、YRIGHT 2010 Victor Company of Japan, LimitedLead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade)TABLE OF CONTENTS1PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3、. . . 1-32SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-53DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4、 . . 1-54ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-95TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5、. . . . . . . . 1-9RadioFans.CN 收音机爱 好者资料库1-2 (No.MB723)SPECIFICATIONDesigns & specifications are subject to change without notice.Disc playerCD capacity1CDSignal-to-noise ratio85 dBDynamic range90 dBTunerFM tuning range87.50 MHz - 108.00 MHzAntennaFM telescopic antennaGeneralSpeakersFull range8 cm

6、(3 3/16”) cone 2Speaker impedance16 Super woofer13 cm (5 1/8”) cone 2Speaker impedance7 Output power40 WInput terminalUSBPlayable filesMP3, WMACompatible deviceMass storage classOutput powerDC 5 V 500 mADock for iPodDC 5 V 500 mADC INDC 12 VOutput terminalPHONES (3.5) 1Power supplyAC 230 V , 50 Hz (

7、Europe)AC 120 V , 60 Hz (Northern America)AC 240 V , 50 Hz (Australia)AC 110 V - 240V , 50 Hz/60 Hz (Other area)DC 15 V (R20 (SUM-1)/D (13D)-size batteries 10)External DC 12 V (Car battery via the optional car adapter)PowerconsumptionWhen using an AC outlet28 W (at operation)1 W (on standby)External

8、 DC 12 V2 A (power on mode)Dimensions666 mm (26 1/4”) 231 mm (9 1/8”) 240 mm (9 1/2”) (W/H/D)MassApprox. 6.8 kg (15.0 lds) (without batteries stored in the battery compartment)RadioFans.CN 收音机爱 好者资料库(No.MB723)1-3SECTION 1PRECAUTION1.1Safety Precautions(1) This design of this product contains special

9、 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 should be per-forme

10、d 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 responsibility for pe

11、rsonal 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 by us-ing replac

12、ement 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 List in the Ser

13、vice 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,clamps, tubings, b

14、arriers 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 been returned to

15、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 productis safe to opera

16、te 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 part having a ret

17、urn 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 10W resistorpar

18、alleled 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 chassis, and measu

19、re 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 safety standard

20、s.(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 selector is provide

21、d, 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 silk-screenprinted

22、 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 manufacturer. (This r

23、egulation 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 TYPE1-4 (No.MB723)1.5Preventing static electricityElectrostatic discharge (ESD), which occurs when static electricity st

24、ored in the body, fabric, etc. is discharged, can destroy the laserdiode in the traverse unit (optical pickup). Take care to prevent this when performing repairs.1.5.1 Grounding to prevent damage by static electricityStatic electricity in the work area can destroy the optical pickup (laser diode) in

25、 devices such as laser products. Be careful to use proper grounding in the area where repairs are being performed. (1) Ground the workbenchGround the workbench by laying conductive material (such as a conductive sheet) or an iron plate over it before placing thetraverse unit (optical pickup) on it.(

26、2) Ground yourselfUse an anti-static wrist strap to release any static electricity built up in your body. (3) Handling the optical pickup In order to maintain quality during transport and before installation, both sides of the laser diode on the replacement opticalpickup are shorted. After replaceme

27、nt, return the shorted parts to their original condition. (Refer to the text.) Do not use a tester to check the condition of the laser diode in the optical pickup. The testers internal power source can easilydestroy the laser diode. 1.6Handling the traverse unit (optical pickup)(1) Do not subject th

28、e traverse unit (optical pickup) to strong shocks, as it is a sensitive, complex unit. (2) Cut off the shorted part of the flexible cable using nippers, etc. after replacing the optical pickup. For specific details, refer to thereplacement procedure in the text. Remove the anti-static pin when repla

29、cing the traverse unit. Be careful not to take too long atime when attaching it to the connector. (3) Handle the flexible cable carefully as it may break when subjected to strong force. (4) I t is not possible to adjust the semi-fixed resistor that adjusts the laser power. Do not turn it.1MConductiv

30、e material(conductive sheet) or iron palate(caption)Anti-static wrist strap(No.MB723)1-5SECTION 2SPECIFIC SERVICE INSTRUCTIONSThis service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.SECTION 3DISASSEMBLY3.1Main body (Used figure were RV-NB50E)3.1.1Removing the Punching panel (See Fig.1)(1

31、) Remove the twelve screws A attaching the both side of thePunching panel.Fig.13.1.2Removing the Rear cabinet (See Fig.2, 3, 4, 5)(1) Remove the four screws B attaching the both side of theSubwoofer. (See Fig.2)Fig.2(2) Remove the ten screws C attaching the Rear cabinet. (SeeFig.3)(3) Remove the two

32、 screws D attaching the CD mechanism.(See Fig.3)Fig.3(4) Disconnect the connector wire from Power supply boardconnected to connector CN101 of the Main board. (SeeFig.4)Fig.4AABCCCDCN1011-6 (No.MB723)(5) Disconnect the connector wire from Power supply boardconnected to connector CN301 of the Main boa

33、rd. (SeeFig.5)Fig.53.1.3Removing the SMPS board (See Fig.6, 7)(1) Remove the two screws E attaching the SMPS board. (SeeFig.6)Fig.6(2) Disconnect the connector wires from Power supply boardconnected to connectors of SMPS board. (See Fig.7)Fig.73.1.4Removing the Power supply board (See Fig.8)(1) Remo

34、ve the two screws F and two screws G attaching thePower supply board.Fig.83.1.5Removing the CD mechanism (See Fig.9, 10, 11, 12)(1) Disconnect the connector wire from Left speaker connect-ed to connector CN102 of the Main board. (See Fig.9)Fig.9(2) Disconnect the connector wire from Right speaker co

35、n-nected to connector CN103 of the Main board. (See Fig.10)Fig.10CN301EconnectorFGCN102CN103(No.MB723)1-7(3) Disconnect the card wire from Main board connected toconnector CN450 of the iPod board. (See Fig.11)(4) Disconnect the connector wire from Right key board con-nected to connector CN303 of the

36、 Main board. (See Fig.11)(5) Disconnect the connector wire from USB board connectedto connector CN201 of the Main board. (See Fig.11)(6) Disconnect the connector wire from Left key board con-nected to connector CN301 of the Main board. (See Fig.11)Fig.11(7) Disconnect the connector wire from LCD boa

37、rd connectedto connector CN304 of the Main board. (See Fig.12)Fig.123.1.6Removing the Main board (See Fig.13, 14, 15, 16)(1) Disconnect the card wire from pickup connected to connec-tor CN701 of the Main board. (See Fig.13)Fig.13(2) Disconnect the connector wire from Main board connectedto connector

38、 of the Mechanism board. (See Fig.14)Fig.14(3) Disconnect the connector wire from Door switch board con-nected to connector CN305 of the Main board. (See Fig.15)Fig.15(4) Remove the four screws H attaching the Main board. (SeeFig.16)Fig.16CN450CN301CN303CN201CN304CN701connectorCN305HH1-8 (No.MB723)3

39、.1.7Removing the iPod board (See Fig.17)(1) Remove the two screws J attaching the iPod board.Fig.173.1.8Removing the LCD board (See Fig.18)(1) Remove the three screws K attaching the LCD board.Fig.183.1.9Removing the Front panel (See Fig.19)(1) Disconnect the connector wire from Right key board con-

40、nected to connector CN407 of the Volume board.(2) Disconnect the connector wire from Left key board con-nected to connector CN408 of the Volume board.(3) Remove the four screws L attaching the Front panel.(4) Disengage four hooks a engaged Front panel.Fig.193.1.10 Removing the Key board (See Fig.20)

41、(1) Remove the twelve screws M attaching the Key boards.Fig.203.1.11 Removing the Right speakers (See Fig.21, 22, 23)(1) Remove the two screws N attaching the Woofer, (SeeFig.21)Fig.21(2) Remove the four screws P attaching the Speaker cover.(See Fig.22)Fig.22JKKLLCN407CN408hook ahook aMMMNPP(No.MB72

42、3)1-9(3) Remove the four screws Q attaching the Main speaker.(See Fig.23)Fig.233.1.12 Removing the Left speaker(1) Left speaker removing method as follow the 3.1.11 Re-moving the Right speakers.SECTION 4ADJUSTMENTThis service manual does not describe ADJUSTMENT.SECTION 5TROUBLESHOOTINGThis service m

43、anual does not describe TROUBLESHOOTING.QQ(No.MB723)VSEPrinted in JapanVictor Company of Japan, LimitedHome Entertainment Business Division Personal AV Operation 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,JapanSCHEMATIC DIAGRAMSRV-NB50B, RV-NB50E, RV-NB50EN,RV-NB50EV, RV-NB51WE, RV-NB51WEN,RV

44、-NB51WEV, RV-NB52BB, RV-NB52BE,RV-NB52BEN, RV-NB52BEV, RV-NB50J,RV-NB50C, RV-NB50US, RV-NB50A,RV-NB52BJContentsBlock diagramsStandard schematic diagramsPrinted circuit boards2-12-2 2-7 to 11POWERED WOOFER CD SYSTEMNo.MB723SCH2010/4COPYRIGHT 2010 Victor Company of Japan, Limited.Lead free solder used

45、 in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade)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 ar

46、e critical for safety. 2-1VR401M VOLUMES407OperationS411SwitchKEY1IC401RemoconRMCCN407CN406CN402CN303VR402W VOLUMES401OperationS406SwitchKEY2D401StandbyLEDCN409CN408CN401CN301LEDCN305CD DOORSWITCHCD DOOR SWITCHIC302T5CL8SYSTEMMICONIC703T5C3J-7D13USB DriverIC707SST39VF800AFLASHIC701CD/USB RF DSPTC94A

47、92FGIC702Motor driverBA5826HFPUSB CD L/R5V3.3V1.5VIC705BH15FB1WGQ702KTC3205Q207KTA1273USB 5V SWCN201CN430JK430TO USBCN701CN702CDPICK UPTracking &Focus CoilRESETSWSpindle &Fleed motorCN450CN202TO iPodJK450iPod L/RiPod 5V SWQ204KTA12735V OUTIC201MP1842DC/DC 5V9V OUTQ1052SD2394EIC202BA4510FVBufferiPod

48、L/RIC203FUNCTIONBD3490FV3.3VIC301HT7533IC303BD4827RESETIC304AT2402EEPROMTUNER L/RHP MUTEQ030Q031IC002HP AMPNJM4580IC101MAIN AMPTDA7266SAMUTEL/RQ102WVOL1WVOL2WVOL3Q109Q110Q111IC102WOOFER AMPLV49152VIC107HPF & LPFIC104 to IC106INPUT AMPPHASE AMPCOMP AMPIC001S4702STUNER SectionQ0012SC3052F3.3V OUTLCDTO

49、 FM ANTCN304CN403M L+/-W L+/-CN103M R+/-W R+/-CN102CN301CN440CN101CN601TO L MAIN SPEAKERTO L WOOFER SPEAKERTO R MAIN SPEAKERTO R WOOFER SPEAKERPower supply SectionAC DETVCCCN606CN604SPS PCB14V/4AJK602JK440JK601CN602B+HP OUTBATTERYINDC INAC INBlock Diagram2-2IC702SP+SP-SD+SD-IN-SWGNDC749R755L710P0:30

50、JR706JR707JR703CDUSBONMGNDDGNDAMIAMUTE_1CD_RESETUSB_UPDUSB_RXDUSB_TXDUSB_RSTUSBD-USBD+COM5VCD_MUTEBOOTOUTP30P30R795R756BP3.3VFB102FB102JR705R779R780FB102Q703R715R775R712R713L712L704P28P28P10D701DA3.3VD3.3VM1.5VD1.5VA3.3VIC705INOUTGNDSTBY NCFB102Q702L701L702R761R762L703R760R759R758R757FB102FB102L705R