JVC-NXD7-cs-sm 维修电路原理图.pdf

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1、SERVICE MANUALCOPYRIGHT 2009 Victor Company of Japan, LimitedNo.MB7112009/10COMPACT COMPONENT SYSTEMMB711200910SERVICE MANUALNX-D7UX, NX-D7UN, NX-D7EE, NX-D7UW, NX-D7UH, NX-D5UG, NX-D5UX, NX-D5UN, NX-D5EE, NX-D5UW, NX-D5UHCOPYRIGHT 2009 Victor Company of Japan, LimitedLead free solder used in the bo

2、ard (material : Sn-Ag-Cu, melting point : 219 Centigrade)Lead free solder used in the board (material : Sn-Cu, melting point : 230 Centigrade)TABLE OF CONTENTS1PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3、. . . . . . . . 1-42SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-73DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4、 . . . . . . . 1-84ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-175TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5、 . . . . . . . . . . . 1-18(for NX -D7)(for NX -D7/NX -D5)CA-NXD7SP-NXD7FSP-NXD7WSP-NXD7FSP-NXD7FSP-NXD7FSP-NXD7WSP-NXD7WSP-NXD7WCA-NXD5RadioFans.CN 收音机爱 好者资料库1-2 (No.MB711)SPECIFICATIONAmplifier sectionOutput PowerNX-D7MAIN SPEAKERS230 W (115 W + 115 W) at 3 (10% THD)SUBWOOFERS230 W (115 W + 115 W)

6、 at 3 (10% THD)NX-D5MAIN SPEAKERS230 W (115 W + 115 W) at 3 (10% THD)SUBWOOFERS115 W at 3 (10% THD)Audio InputAUDIO IN: Stereo mini ( 3.5 mm)500 mV/47 k (at “AUDIO LVL3”)250 mV/47 k (at “AUDIO LVL2”)125 mV/47 k (at “AUDIO LVL1”)Digital Input/OutputOPTICAL DIGITAL OUTPUT (output only)-21 dBm to -15 d

7、Bm (660 nm 30 nm)NX-D7Bluetooth ADPTUSB1:VIDEO/AUDIO PLAY (input only)USB2:AUDIO REC/PLAY (input and output)HDMI MONITOR OUT (output only)NX-D5USB: REC/PLAY (input and output)HDMI MONITOR OUT (output only)VIDEO OUTColor systemNTSC/PAL (interlaced/progressive)VIDEO (Composite)1 V(p-p)/75 COMPONENT(Y)

8、1 V(p-p)/75 (PB/PR)0.7 V(p-p)/75 HDMI MONITOR OUT480p/576p/720p/1080i/1080pSpeaker impedance3 - 16 Tuner sectionFM tuning range87.50 MHz - 108.00 MHzAM tuning range531 kHz - 1 710 kHz (at 9 kHz)530 kHz - 1 710 kHz (at 10 kHz)Disc player sectionRegion codesMiddle East2South East Asia3Central and Sout

9、h America, Australia4Dynamic range80 dBHorizontal resolution500 linesWow and flutterImmeasurableUSB sectionRecording formatMP3/WMA formatUSB specificationCompatible with USB 2.0 Full SpeedCompatible deviceMass storage classCompatible systemFAT16, FAT32Bus power supplyDC 5 V 500 mABluetooth section (

10、NX-D7)VersionBluetooth ver. 2.0 + EDR Class 1/Class 2Compatible Bluetooth profile A2DP, AVRCPCommunication format2.4 GHz FHSSHDMI sectionOutput powerDC 5 V 55 mARadioFans.CN 收音机爱 好者资料库(No.MB711)1-3Design and specifications are subject to change without notice.GeneralPower requirementsAC 110 - 127/22

11、0 - 240 V , 50/60 HzFor Australia: AC 240 V , 50 Hz, For Russia: AC 230V , 50 HzPower consumptionNX-D7130 W (at operation)/21 W (at standby) /1 W or less (at ECO mode)NX-D585 W (at operation)/16 W (at standby) /1 W or less (at ECO mode)Dimensions (approx.)195 mm 333 mm 313 mm (W H D)Mass (approx.)3.

12、5 kgMain SpeakerType3-way 3-speaker Bass Reflex Type (Magnetically-Shielded Type)Speaker unitsTweeter2.0 cm cone 1Mid Range5.0 cm cone 1Woofer16.0 cm cone 1Impedance3 Power handling capacity115 WFrequency range40 Hz - 20 000 HzSound pressure level84 dB/W/mDimensions (W H D)205 mm 409.5 mm 290.5 mmMa

13、ss3.6 kg eachSubwooferType1-Way Bass Reflex Type (Magnetically-Shielded Type)Speaker units16.0 cm cone 1Impedance3 Power handling capacity115 WFrequency range40 Hz - 5 000 HzSound pressure level83 dB/W/mDimensions (W H D)205 mm 409.5 mm 290.5 mmMass3.5 kg1-4 (No.MB711)SECTION 1PRECAUTION1.1Safety Pr

14、ecautions(1) This design of this product contains 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 us

15、ed in the original circuits. Services should 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 wil

16、l further relieve themanufacture of responsibility 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

17、afforded by them necessarily be obtained by 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

18、 on the schematics and by ( ) onthe Parts List 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 pro

19、ducts are routed and dressed with ties,clamps, 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, a

20、nd it should be confirmedthat they have been 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, con

21、trol shafts, etc.) to be sure the productis 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 c

22、abinet, particular-ly any exposed metal part 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 sensitivit

23、yin 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 good earth ground.Measure the AC voltage across the resistor with the ACvoltmeter. Move the resistor connection to each exposed metalpart, particularly any exposed

24、 metal part having a returnpath to the chassis, 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 desig

25、ned and manufactured tomeet international safety 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 replacedb

26、y approved parts.(5) If mains voltage selector 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

27、 with component parts appearing on the silk-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

28、type and rating as specified by the manufacturer. (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.MB711)1-51.5Preventing static electricityElectrostatic

29、discharge (ESD), which occurs when static electricity 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 w

30、ork area can destroy the optical pickup (laser 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

31、before placing thetraverse unit (optical pickup) 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 th

32、e replacement opticalpickup are shorted. After 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

33、 the traverse unit (optical pickup)(1) Do not 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 proc

34、edure in the text. Remove the anti-static pin 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

35、that adjusts the laser power. Do not turn it.1.7Attention when traverse unit is decomposed*Please refer to Disassembly method in the text 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 disco

36、nnected without applying solder, the pickup may be destroyed by static electricity.) In the assembly, be sure to remove solder from the short land sections after connecting the card wire.1MConductive material(conductive sheet) or iron palate(caption)Anti-static wrist strapSolder short land section1-

37、6 (No.MB711)1.8Important 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 class 1M laser radiation when open. Do not view directly with optical instruments. 3.CAUT

38、ION : 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 equipped with safety switches which prevent emission of radiation when the drawer is open and

39、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, adjustments or performance of procedures other than those specified here in may result in hazardous

40、 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.MB711)1-7SECTION 2SPECIFIC SERVICE INSTRUCTIONSThis service manual does not describe SPECIFIC S

41、ERVICE INSTRUCTIONS.1-8 (No.MB711)SECTION 3DISASSEMBLY3.1Main body (Used figure are NX-D7)3.1.1Removing the Top cover (See Fig.1, 2 and 3)(1) Remove the five screws A and one screw B attaching theSide panel. (See Fig.1)Fig.1(2) Remove the six screws C attaching the both side of theSide panel and the

42、n side to backward to remove the Sidepanel. (See Fig.2)Fig.2(3) Disengage two hooks a engaged both side of the Top cov-er. (See Fig.3)Fig.33.1.2Removing the Rear panel (See Fig.4, 5)(1) Disconnect the card wire from Tuner pack connected toconnector CN306 of the Main board. (See Fig.4)(2) Disconnect

43、the connector wire from FAN connected to con-nector CN303 of the Main board. (See Fig.4)Fig.4AABChook aCN306CN303(No.MB711)1-9(3) Remove the two screws D attaching the Main board. (See Fig.5)(4) Remove the one screw E attaching the DVD board. (See Fig.5)(5) Remove the two screws F attaching the Mech

44、a chassis.(See Fig.5)(6) Remove the two screws G attaching the Amp board. (See Fig.5)(7) Remove the two screws H attaching the Voltage selectorboard. (See Fig.5)Fig.53.1.3Removing the Main board (See Fig.6)(1) Disconnect t the card wire from USB board connected toconnector CN502 of the Main board.(2

45、) Disconnect the card wires from Ripping module board con-nected to connectors CN305 and CN501 of the Mainboard.(3) Disconnect the card wire from Loader board connected toconnector CN307 of the Main board.(4) Disconnect the connector wire from Power board connect-ed to connector CN180 of the Main bo

46、ard.(5) Disconnect the card wire from DVD board connected toconnector CN500 of the Main board.(6) Disconnect the card wire from Amp board connected toconnector CN503 of the Main board.(7) Disconnect the card wires from DVD board connected toconnectors CN310 and CN308 of the Main board.(8) Disconnect

47、 the parallel wire from Amp board connected toconnector CN181 of the Main board.(9) Disconnect the card wire from Mic board connected to con-nector CN304 of the Main board.(10) Disconnect the card wires from Front panel connected toconnectors CN301 and CN312 of the Main board.(11) Disconnect the par

48、allel wire from Front panel connected toconnector CN315 of the Main board.(12) Remove the two screws J attaching the Main board.Fig.63.1.4Removing the DVD mechanism (See Fig.7, 8)(1) Disconnect the connector wire from USB board connectedto connector CN811 of the DVD board. (See Fig.7)Fig.7DEFHFGCN50

49、2CN500CN503CN310CN308CN181CN304CN305CN307CN301 CN315CN180CN312CN501JJCN8111-10 (No.MB711)(2) Disconnect the connector wire from USB board connectedto connector CN801 of the Connection board. (See Fig.8)(3) Remove the two screws K attaching the both side of theDVD mechanism. (See Fig.8)(4) Disengaged

50、 two hooks b engaged both side of the DVDmechanism, (See Fig.8)Fig.83.1.5Removing the Front panel (See Fig.9, 10)(1) Remove the two screws L attaching the Front panel. (See Fig.9)(2) Disengage one hook c engaged Front panel. (See Fig.9)Fig.9(3) Disengage two hooks d engaged both side of the Frontpan