JVC-NXT10-cs-sm 维修电路原理图.pdf

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1、SERVICE MANUALCOPYRIGHT 2010 Victor Company of Japan, LimitedNo.MB7072010/2COMPACT COMPONENT SYSTEMMB70720102 SERVICE MANUALNX-T10E, NX-T10EN, NX-T10EV, NX-T10UGCOPYRIGHT 2010 Victor Company of Japan, LimitedLead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade)TABL

2、E OF CONTENTS1PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-42SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3、 . . . . . 1-73DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-74ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4、. . . . . . . . . . . . . 1-115TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11SP-NXT10FSP-NXT10FSP-NXT10WCA-NXT10Except UGRadioFans.CN 收音机爱 好者资料库1-2 (No.MB707)SPECIFICATIONDesigns & specifications

5、are subject to change without notice.Main unit-CA-NXT10Input/outputHDMI inputHDMI IN 1, HDMI IN 2HDMI outputHDMI MONITOR OUTUSB terminalUSB MEMORY REC/PLAYAnalog audio inputAUDIO IN 500 mV/50 kDigital audio inputDIGITAL IN (OPTICAL) -21 dBm to -15 dBm (660 nm 30 nm)Analog video outputVIDEO OUTColor

6、systemPAL (E, EN, EV) : NTSC/PAL (UG)VIDEOComposite video, 1 V(p-p)/75 COMPONENTComponent video (interlaced/progressive)(Y): 1 V(p-p)/75 (PB/PR): 0.7 V(p-p)/75 TunerFM tuning range87.50 MHz - 108.00 MHzDisc playerPlayable discDVD Video/CD/VCD/SVCDCD-R/CD-RW (CD/SVCD/VCD/MP3/WMA/JPEG/MPEG-1/MPEG-2/Di

7、vX format)DVD-R/-RW (DVD Video/DVDVR/MP3/WMA/JPEG/MPEG-1/MPEG-2/DivX format)+R/+RW (DVD Video/MP3/WMA/JPEG/MPEG-1/MPEG-2/DivX format)Dynamic range80 dBHorizontal resolution500 linesWow and flutterImmeasurableUSBPlayable filesMP3/WMA/JPEG/MPEG-1/MPEG-2/DivX formatCD recording formatMP3USB specificati

8、onCompatible with USB 2.0 Full SpeedCompatible deviceMass storage classCompatible systemFAT16, FAT32Bus power supplyDC 5 V 500 mAHDMIVideo resolution576p, 720p, 1080i, 1080pOutput power (HDMI MONITOR OUT)DC 5 V 55 mAGeneralMass (approx.)2.3 kg (without the stand)Dimensions (approx.)Placed vertically

9、(1): 240mm, (2): 420mm, (3): 64mm, (4): 70mm, (5): 134mmPlaced horizontally (1): 420mm, (2): 70mm, (3): 240mm(3)(4)(5)(1)(2)(1)(3)(2)RadioFans.CN 收音机爱 好者资料库(No.MB707)1-3Designs & specifications are subject to change without notice.Subwoofer-SP-NXT10WOutput powerFront160 W (80 W + 80 W) at 4 (10% THD

10、)Surround160 W (80 W + 80 W) at 4 (10% THD)Subwoofer200 W at 6 (10% THD)SpeakerBass reflex type16 cm cone 1Power handling capacity200 WFrequency range42 Hz - 150 HzSound pressure level75 dB/W mPower requirementsAC 230 V , 50 Hz (E, EN, EV) : AC110V - 240V , 50Hz/60Hz (UG)Power consumption80 W (at op

11、eration of the System) for E, EN, EV : 95W (at operation of the System) for UG0.85 W (at standby)Mass (approx.)10 kgDimensions (approx.)231 mm 393 mm 370.5 mm (W/H/D)Speakers-SP-NXT10FSpeaker1 way bass reflex type (magnetically shielded)Front8 cm cone 1Surround5.5 cm cone 1Impedance4 Power handling

12、ca-pacityFront80 WSurround80 WFrequency rangeFront80 Hz - 20 kHzSurround125 Hz - 20 kHzSound pressure levelFront80 dB/W mSurround71 dB/W mMass (approx.)1.3 kg eachDimensions (approx.)100 mm 240 mm 128 mm (W/H/D)1-4 (No.MB707)SECTION 1PRECAUTION1.1Safety Precautions(1) This design of this product con

13、tains special 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

14、 be per-formed 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 responsi

15、bility for personal 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

16、us-ing replacement 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 Li

17、st in the Service 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,clamp

18、s, tubings, barriers 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

19、 returned to 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

20、safe to operate 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

21、 having a return 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 10

22、W resistorparalleled 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 chass

23、is, and measure 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 sa

24、fety standards.(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 select

25、or is provided, 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-

26、screenprinted 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 manufact

27、urer. (This regulation 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 TYPE(No.MB707)1-51.5Preventing static electricityElectrostatic discharge (ESD), which occurs when static el

28、ectricity stored 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 (las

29、er diode) in 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 pic

30、kup) on it.(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. Aft

31、er replacement, 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 no

32、t subject the 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 pi

33、n when replacing 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

34、.1MConductive material(conductive sheet) or iron palate(caption)Anti-static wrist strap1-6 (No.MB707)1.7Important for laser products1.CLASS 1 LASER PRODUCT 2.CAUTION : (For U.S.A.) Visible and/or invisible class II laser radiation when open. Do not stare into beam. (Others) Visible and/or invisible

35、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 product uses visible and/or invisible laser radiation and is equip

36、ped 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 laser is able to function. 6.CAUTION : Use of controls, adjustment

37、s 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 adjustment or operationcheck. WARNING LABEL and PRINT(No.MB707)

38、1-7SECTION 2SPECIFIC SERVICE INSTRUCTIONSThis service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.SECTION 3DISASSEMBLY3.1Main body (Used figure were NX-T10E)3.1.1Removing the DVD door(1) Connect the Main unit and Subwoofer.(2) Power to ON and then open the DVD door.(3) Slid to front side

39、and pull up the DVD door.3.1.2Removing the Top cabinet (See Fig.1, 2, 3, 4)(1) Remove the six screws A attaching the Top cabinet. (SeeFig.1)(2) Disconnect the card wire from DVD MPEG board connect-ed to connector CNC5 of the Connect board. (See Fig.1)Fig.1(3) Remove the four screws B attaching the T

40、op cabinet. (SeeFig.2)Fig.2(4) Remove the three screws C attaching the Top cabinet.(See Fig.3)Fig.3(5) Disconnect the card wire from DVD MPEG board connect-ed to connector CON401 of the Display board. (See Fig.4)Fig.43.1.3Removing the DVD mechanism (See Fig.5)(1) Remove the four screws D attaching t

41、he DVD mechanism.(2) Remove the two screws E attaching the Connect board.Fig.53.1.4Removing the DVD mechanism (See Fig.6)(1) Remove the six screws F attaching the Display board.(2) Disconnect the card wire from Key board connected to con-nectors CON402 and CON403 of the Display board.Fig.6AACNC5BCCO

42、N401DDDECON403CON402FF1-8 (No.MB707)3.1.5Removing the DVD mechanism (See Fig.7, 8, 9)(1) Remove the three screws G and one screw H attaching theDVD MPEG board. (See Fig.7)Fig.7(2) Disconnect the card wire from DVD MPEG board connect-ed to connector SCON3 of the UP GRADE board. (SeeFig.8)(3) Remove t

43、he four screws J attaching the DVD MPEGboard. (See Fig.8)(4) Disconnect the connector wire from Main board connectedto connector CN100 of the DVD MPEG board. (See Fig.8)(5) Disconnect the connector wire from DVCC board connect-ed to connector CON1 of the DVD MPEG board. (SeeFig.8)(6) Disconnect the

44、card wire from Main board connected toconnector CN2 of the DVD MPEG board. (See Fig.8)(7) Disconnect the earth wire from Main board connected topost pin of the Main board. (see Fig.8)(8) Disconnect the connector wire from USB board connectedto connector CN82 of the DVD MPEG board. (See Fig.8)(9) Dis

45、connect the card wires from Main board connected toconnectors CN8 and CN9 of the DVD MPEG board. (SeeFig.8)Fig.83.1.6Removing the USB board (See Fig.9)(1) Disconnect the connector wire from USB board connectedto connector CON103 of the Main board.(2) Disconnect the card wire from Main board connecte

46、d toconnector CON504 of the USB board.(3) Remove the two screws K attaching the USB board.Fig.93.1.7Removing the UP GRADE board (See Fig.10)(1) Disconnect the card wire from Main board connected toconnector SCON1 of the UPGRADE board.(2) Remove the four screws L attaching the UP GRADE board.Fig.103.

47、1.8Removing the FM tuner module (See Fig.11, 12)(1) Disconnect the card wire from FM tuner module connectedto connector CON603 of the Main board. (See Fig.11)Fig.11GHSCON3GND3CN100CN2CN8CN9CN82CON1JJCON103CON504KLLSCON1CON603(No.MB707)1-9(2) Remove the one screw M attaching the FM tuner module.(See

48、Fig.12)Fig.123.1.9Removing the Main board (See Fig.13, 14, 15)(1) Remove the four screws N attaching the Main board. (SeeFig.13)Fig.13(2) Disconnect the connector wire from DC motor connected toconnector MTCON1 of the Main board. (See Fig.14)(3) Remove the four screws P attaching the bracket. (SeeFi

49、g.14)(4) Remove the two screws Q attaching the bracket. (SeeFig.14)(5) Remove the three screws R and two screws S attachingthe Motor bracket. (See Fig.14)Fig.14(6) Remove the five screws T attaching the Main board. (SeeFig.15)Fig.153.2Subwoofer (Used figure were SP-NXT10WE)3.2.1Removing the Power am

50、p unit (See Fig.1, 2, 3)(1) Remove the six screws A attaching the Power amp unit.(See Fig.1)Fig.1(2) Remove the three screws B attaching the Power amp unit.(See Fig.2)Fig.2(3) Pull out the Power amp unit for half way; disconnect theconnector wire from Subwoofer speaker connected to con-nector CN2 of