JVC-NXPB10-cd-sm 维修电路原理图.pdf

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1、SERVICE MANUALCOPYRIGHT 2010 Victor Company of Japan, LimitedNo.MB7302010/10CD PORTABLE SYSTEMMB730201010SERVICE MANUALNX-PB10B, NX-PB10E, NX-PB10EYCOPYRIGHT 2010 Victor Company of Japan, LimitedLead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade)TABLE OF CONTENTS

2、1PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-32SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-

3、63DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-64ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4、 . . . . . . . 1-85TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8PreliminaryRadioFans.CN 收音机爱 好者资料库1-2 (No.MB730)SPECIFICATIONDesign and specifications are subject to change without notice.Amplif

5、ier sectionOutput Power4 W (2 W + 2 W) at 16 (10% THD)Audio InputAUDIO IN: Stereo mini ( 3.5 mm)250 mV/47 kDigital inputUSB terminalTunerFM tuning range87.50 MHz - 108.00 MHzDisc playerDynamic range80 dBWow and flutterImmeasurableUSBUSB specificationCompatible with USB 2.0 Full SpeedCompatible devic

6、eMass storage classCompatible systemFAT16, FAT32Output powerDC 5 V 500 mASDCompatible deviceSD, SDHCCompatible systemFAT16, FAT32iPodOutput powerDC 5 V 500 mAGeneralSpeaker typeBass-Reflex typeSpeaker unit8 cm x 2Speaker impedance16 Power requirementsAC 230 V / 50 HzPower consumption25 W (at operati

7、on)1.00 W or less (on standby)Dimensions (approx.)400 mm 215 mm 91 mm (W H D)Mass (approx.)2.3 kgRadioFans.CN 收音机爱 好者资料库(No.MB730)1-3SECTION 1PRECAUTION1.1Safety Precautions(1) This design of this product contains special hardware andmany circuits and components specially for safety purpos-es. For c

8、ontinued 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) Alterations of the design or circuitry of the

9、 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 therefrom.(3) Many electrical and mec

10、hanical 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, watt-age, etc. Replacement parts whi

11、ch 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 substitutereplacement which does not have the same sa

12、fety 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 fromlive parts, high temperature parts, mo

13、ving 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 shock hazard testingAfter reassembling

14、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 notuse a line isolation transformer du

15、ring 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 earth ground. Any leakage cur-rent must

16、 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 an ex-posed metal part and a known

17、 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, reverse the plug in the AC outlet an

18、drepeat 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 repairer to ensure thatthese safety

19、 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.1.3CautionBurrs formed during molding may be

20、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 parts that areprinted over with bla

21、ck 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 version)Good earth groundPlace this probe

22、 on each exposedmetal part.AC VOLTMETER(Having 1000 ohms/volts,or more sensitivity)1500 10W0.15 F AC TYPE1-4 (No.MB730)1.5Preventing static electricityElectrostatic discharge (ESD), which occurs when static electricity stored in the body, fabric, etc. is discharged, can destroy the laserdiode in the

23、 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 devices such as laser products. Be careful to use proper grounding in the area

24、 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.(2) Ground yourselfUse an anti-static wrist strap to release any static electric

25、ity 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 replacement, return the shorted parts to their original condition. (Refer to the text.)

26、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 the traverse unit (optical pickup) to strong shocks, as it is a sensitive, comple

27、x 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 replacing the traverse unit. Be careful not to take too long atime when attaching it

28、 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.1.7Attention when traverse unit is decomposed*Please refer to Disassembly method in the te

29、xt for the pickup unit. Apply solder to the short land sections before the card wire is disconnected from the connector on the servo board. (If the card wireis disconnected without applying solder, the pickup may be destroyed by static electricity.) In the assembly, be sure to remove solder from the

30、 short land sections after connecting the card wire.1MConductive material(conductive sheet) or iron palate(caption)Anti-static wrist strapsolder short(No.MB730)1-51.8Important for laser products1.CLASS 1 LASER PRODUCT 2.CAUTION : (For U.S.A.) Visible and/or invisible class II laser radiation when op

31、en. Do not stare into beam. (Others) Visible and/or invisible class 1M laser radiation when open. Do not view directly with optical instruments. 3.CAUTION : Visible and/or invisible laser radiation when open and inter lock failed or defeated. Avoid direct exposure to beam.4.CAUTION : This laser prod

32、uct uses visible and/or invisible laser radiation and is equipped with safety switches which prevent emission of radiation when the drawer is open and the safety interlocks have failed or are defeated. It is dangerous to defeat the safety switches.5.CAUTION : If safety switches malfunction, the lase

33、r is able to function. 6.CAUTION : Use of controls, adjustments or performance of procedures other than those specified here in may result in hazardous radiation exposure. REPRODUCTION AND POSITION OF LABELS and PRINT!Please use enough caution not to see the beam directly or touch it in case of an a

34、djustment or operationcheck. WARNING LABEL and PRINT1-6 (No.MB730)SECTION 2SPECIFIC SERVICE INSTRUCTIONSThis service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.SECTION 3DISASSEMBLY3.1Main body (Used model: NX-PB10E)3.1.1Removing the Rear cover (See Fig.1, 2, 3)(1) Remove the three screws

35、 A, three screws B and twoscrews C attaching the Rear cabinet. (See Fig.1)Fig.1(2) Disconnect the antenna wire from post pin FM1 of the Mainboard. (See Fig.2)Fig.2(3) Disconnect the connector wire from Trans board connect-ed to connector CN402 of the Main board. (See Fig.3)Fig.33.1.2Removing the Mai

36、n board (See Fig.4)(1) Disconnect the card wire from iPod board connected toconnector CN103 of the Main board.(2) Disconnect the card wire from Key board connected to con-nector CN701 of the Main board.(3) Disconnect the connector wire from Left speaker connect-ed to connector J2 of the Main board.(

37、4) Disconnect the connector wire from Right speaker con-nected to connector J3 of the Main board.(5) Disconnect the connector wire from Door switch board con-nected to connector CN405 of the Main board.(6) Disconnect the connector wires from USB board connect-ed to connectors J13, CN603 and CN306 of

38、f the Mainboard.(7) Disconnect the card wire from USB board connected toconnector CN607 of the Main board.(8) Disconnect the connector wire from Door motor connectedto connector CN404 of the Main board.(9) Disconnect the connector wire from CD mechanism con-nected to connector CN902 of the Main boar

39、d.(10) Disconnect the flexible wire from CD pickup connected toconnector CN901 of the Main board.(11) Remove the six screws D attaching the Main board.Fig.4BCCAAABBFM1CN402DDDDDDCN405J2J3CN306CN902CN103CN404J13CN607CN701CN603CN901(No.MB730)1-73.1.3Removing the Key board (See Fig.5)(1) Remove the nin

40、e screws E attaching the Key board.Fig.53.1.4Removing the USB board (See Fig.6)(1) Remove the three screws F attaching the USB board.(2) Remove the two screws G and one screw H attaching theDoor switches.Fig.63.1.5Removing the iPod boar (See Fig.7)(1) Remove the two screws J attaching the holder.(2)

41、 Disengage the shaft of iPod bracket from Front cabinet.Fig.73.1.6Removing the Door motor (See Fig.8)(1) Remove the three screws K attaching the Door motor.Fig.83.1.7Removing the CD mechanism (See Fig.9)(1) Remove the three screws L attaching the CD mechanism.Fig.93.1.8Removing the Trans board (See

42、Fig.10)(1) Disconnect the power cord from connector CN1103 of theTrans board.(2) Disconnect the connector wires from Power transformerconnected to connector CN1101 and CN1104 of the Transboard.(3) Remove the three screws M attaching the Trans board.Fig.10EGFHJshaftKLMMCN1103CN1104CN11011-8 (No.MB730

43、)SECTION 4ADJUSTMENTThis service manual does not describe ADJUSTMENT.SECTION 5TROUBLESHOOTINGThis service manual does not describe TROUBLESHOOTING.1-9 (No.MB730)(No.MB730)VSEPrinted in JapanVictor Company of Japan, LimitedPersonal AV Operation 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,JapanS

44、CHEMATIC DIAGRAMSNX-PB10B, NX-PB10E,NX-PB10EYContentsBlock diagramsStandard schematic diagramsPrinted circuit boards2-12-22-10 to 12CD PORTABLE SYSTEMNo.MB730SCH2010/12COPYRIGHT 2010 Victor Company of Japan, Limited.Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigr

45、ade)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. 2-1Block diagramIC705U1LCDKEYREMOTESENSO

46、RIC304IC702MOTOOPEN/CLOSE SWDISCPICKUPIC901SPINDLEMOTORMSLEDMOTORMIC905MOTOR/ACTUATORDRIVERIC9023.3VIC404USBIPODUSB+5VIPOD+5VIC406IC405VOL IC3.3VIC403CD-LCD-RIPOD-LIPOD-RIC401SIGNAL SELECT SW.VOL CONTROLL-CHR-CHIC302POWER AMPU201RECTIFIERAMPAC INPUTTRANSFORMERQ1101Q1102TRANSFORMERRECTIFIERCD+8VIC412

47、+5VIC413SDMAINPOWER3.3V+9VTU-LTU-RTU+VCCFM MODULEFM ANT.RELAYJK402HEADPHONEL.SPK OUTPUT R.SPK OUTPUTVCCAUX-LAUX-RAUX IN2-2Q1102R1108Q1101FS1102CN1103CN1101CN1104RY1101R1104R1102R1101R1103DGNDC1110D1107C1112C1113D1105C1108D1109C1111D1108D1106C1109C1102D1102C1104D1104R1105R1106C1115C1101D1101C1103D110

48、3FS1101C1114C1107PT1101L1101CN1102Parts are safety assurance parts.When replacing those parts makesure to use the specified one.To Main section 3CN402Standard schematic diagrams2-3VC25PH-MUTELOV-TADAVOL-CLKCD_RXCD_TXCLOSE-DETR725R783R782GNDR739R29R767R766C708C6U1GNDIOIRQRDS-DATIIC-SCLIIC-SDAST-BYPLL

49、_RSTIIC-SCLIIC-SDAEQ-SCLEQ-SDACLOSE-DETR759R750R763R762D407D408IC705Q409Q912R484R483C336D705ZD304R309R308C386C339C397L304C455P_CONC318KEY1KEY1IRIRQR302VCC3.3VKEY2KEY2LCD-DATLCD-DATLCD-WRLCD-WRLCD-WRLCD-CSLCD-CSLCD-CSLED+5VVCC+12VRXTXVC25R716R720R722R724R726R728R771R707LB1641R715R713R718R761R111R708R

50、706R709SW901R717R703Q1TC703R710TC702C702D409R719R721R723U702R310C302CN701CN405CN404R764C333DET13VCC3.3VVCC3.3VPH-DETP-CDMCU-MUTEIRLCD-DATTC705C701R705C731C730C732GNDR737IC304DET30VCC+12VLED+5VZD402C530C529R996R995R769R770R755R751R117 VCC3.3V VCC3.3V VCC3.3VTo Front sectionCN712To Main section 3To MO