Jvc-NXF-40-Service-Manual电路原理图.pdf

《Jvc-NXF-40-Service-Manual电路原理图.pdf》由会员分享，可在线阅读，更多相关《Jvc-NXF-40-Service-Manual电路原理图.pdf（16页珍藏版）》请在收音机爱好者资料库上搜索。

1、SERVICE MANUALCOPYRIGHT 2009 Victor Company of Japan, LimitedNo.MB6952009/4COMPACT COMPONENT SYSTEMMB69520094SERVICE MANUALNX-F30B, NX-F30E, NX-F30EN, NX-F40B, NX-F40E, NX-F40ENCOPYRIGHT 2009 Victor Company of Japan, LimitedLead free solder used in the board (material : Sn-Ag-Cu, melting point : 219

2、 Centigrade)Lead free solder used in the board (material : Sn-Cu, melting point : 230 Centigrade)TABLE OF CONTENTS1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-32 SPECIFIC SERVICE INSTRU

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

4、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-145 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15CA-NXF40SP-N

5、XF40FCA-NXF30SP-NXF30FSP-NXF40FSP-NXF30FSP-NXF30W1-2 (No.MB695)SPECIFICATIONMain unit (CA-NXF40/CA-NXF30)Designs and specifications are subject to change without notice.TunerFM frequency 87.50 MHz - 108.00 MHzTerminal (front of the main unit)USB digital input terminal 1Audio output headphone termina

6、l 1 Impedance 16 - 1 kTerminal (rear of the main unit)Audio output speaker terminals 1Left/right speakers Output power 220 W (55 W 4) at 3 (1 kHz/10% THD)Impedance 3 - 16 Subwoofer Output power 180 W at 6 (100 Hz/10% THD)Impedance 6 - 16 Optical digital input terminal 1 -23 dBm to -15 dBmOptical dig

7、ital output terminal 1 -23 dBm to -15 dBmComponent video output terminals 1 Y 1.0 Vp-p, 75 terminatedPB 0.7 Vp-p, 75 terminatedPR 0.7 Vp-p, 75 terminatedComposite video output terminal 1 1.0 Vp-p, 75 terminatedAudio input terminals 1 500 mV/47 kHDMI monitor output terminal 1FM antenna terminal 1USBC

8、ompatible with USB 2.0 Full-SpeedCompatible device USB mass storage class deviceCompatible file system FAT16, FAT32Output power DC 5 V = 500 mAHDMIOutput power DC 5 V = 55 mAGeneralPower source AC 230 V , 50 HzPower consumption (in operation) 100 WPower consumption (on standby) 1 W or lessDimensions

9、 (W H D) including projecting parts 312 mm 95 mm 312.3 mmMass 3.5 kgSpeakers (SP-NXF40F/SP-NXF30F)Type 1-way bass reflex typeMagnetically shielded typeSpeaker driver Front ch 5.5 cm coneSurround ch 5.5 cm conePower handling capacity Front ch 55 WSurround ch 55 WImpedance 3 Frequency range 80 Hz - 20

10、 kHzSound pressure level 77 dB/W/mDimensions (W H D) including projection parts 88 mm 203 mm 127 mmSubwoofer (SP-NXF30W)Type Bass reflex typeSpeaker driver 16 cm conePower handling capacity 180 WImpedance 6 Frequency range 30 Hz - 200 HzSound pressure level 76 dB/W/mDimensions (W H D) 300 mm 301 mm

11、303 mmMass 8.2 kg(No.MB695)1-3SECTION 1PRECAUTION1.1 Safety Precautions(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 t

12、hemanufacturer. 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 product shouldnot be made. Any design alterations of the product shouldnot be made. Any design altera

13、tions or additions will voidthe manufacturers warranty and will 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 o

14、ften 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 which have these specialsafety characteristics are identified in the Parts List of Ser-vice Manual. Elect

15、rical 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 safety charac-teristics as the recommended replacement parts shown inthe Parts List of Service Manual ma

16、y 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, moving parts and/orsharp edges for the prevention of electric shock and firehazard. When service is requ

17、ired, 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 the product, always perform an isola-tion check on the exposed metal parts of the product (an-tenna te

18、rminals, 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 during this check. Plug the AC line cord directly into the AC outlet. Using a“Leakage Current Tester“, m

19、easure 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 not exceed 0.5mA AC (r.m.s.). Alternate check methodPlug the AC line cord directly into the AC outl

20、et. 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 good earth ground.Measure the AC voltage across the resistor with the ACvoltmeter. Move the resisto

21、r 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 andrepeat each measurement. Voltage measured any mustnot exceed 0.75 V AC (r.m.s.). This corresponds t

22、o 0.5mA AC (r.m.s.). 1.2 Warning(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 standards are maintained.(3) Repairs must be made in accordance with the relevantsafety standards.

23、(4) It is essential that safety critical components are replacedby approved parts.(5) If mains voltage selector is provided, check setting for localvoltage.1.3 CautionBurrs formed during molding may be left over on some partsof the chassis. Therefore, pay attention to such burrs in the case of pre-f

24、orming repair of this system.1.4 Critical 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 black such as the resistor ( ), diode ( )and ICP ( ) or identified by the “ “ mark nearby are critic

25、alfor 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 on each exposedmetal part.AC VOLTMETER(Having 1000 ohms/volts,or more sensitivity)1500 10W0.

26、15 F AC TYPE1-4 (No.MB695)1.5 Preventing static electricityElectrostatic 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 Gro

27、unding 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 where repairs are being performed. (1) Ground the workbenchGround the workbench by laying c

28、onductive 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 electricity built up in your body. (3) Handling the optical pickup In order to maintain quality duri

29、ng 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.) Do not use a tester to check the condition of the laser diode in the optical pickup. The tes

30、ters internal power source can easilydestroy the laser diode. 1.6 Handling 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 replac

31、ing 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 to the connector. (3) Handle the flexible cable carefully as it may break when subjected t

32、o strong force. (4) I t is not possible to adjust the semi-fixed resistor that adjusts the laser power. Do not turn it.1.7 Attention 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

33、disconnected from the connecto 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 short land sections after connecting the card wire.1MConductive material(conductive shee

34、t) or iron palate(caption)Anti-static wrist strapSolder short land section(No.MB695)1-51.8 Important for laser products1.CLASS 1 LASER PRODUCT 2.CAUTION : (For U.S.A.) Visible and/or invisible class II laser radiationwhen open. Do not stare into beam.(Others) Visible and/or invisible class 1M laser

35、radiationwhen open. Do not view directly with optical instruments. 3.CAUTION : Visible and/or invisible laser radiation whenopen and inter lock failed or defeated. Avoid directexposure to beam.4.CAUTION : This laser product uses visible and/or invisible laser radiation and is equipped with safety sw

36、itches 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 ableto function. 6.CAUTION : Use of controls, adjustments or performance of

37、 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 PRINT1-6 (No.MB695)SECTION 2SPECIF

38、IC SERVICE INSTRUCTIONSThis service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.SECTION 3DISASSEMBLY3.1 Main body (Used figure are NX-F30E)3.1.1 Removing the Top cover (See Fig.1 to 3)(1) Remove the six screws A attaching the Top and Right cov-er. (See Fig.1)Fig.1(2) Remove the Volume kno

39、b and Source knob.(3) Remove the three screws B attaching the Right panel.(See Fig.2)Fig.2(4) Slide to frontward and then remove the Right panel.(5) Slide to backward and then remove the Side panel. (SeeFig.3)Fig.3(6) Slide to backward and then remove the Top cover.3.1.2 Removing the Front panel (Se

40、e Fig.4 to 7)(1) Remove the three screws C attaching the Front panel.(See Fig.4)Fig.4(2) Disconnect the card wire from Main board connected toconnector CN561 of the Front board. (See Fig.5)(3) Remove the three screws D attaching the Front panel.(See Fig.5)Fig.5AABCChook aCN561D D(No.MB695)1-7(4) Dis

41、engage one hook a engaged bottom side of the Frontpanel. (See Fig.4)(5) Disengage two hooks b engaged both side of the Frontpanel. (See Fig.6)Fig.6(6) Disconnect the card wire from main board connected toconnector CN531 of the Touch sensor board. (See Fig.7)(7) Disconnect the card wire from Main boa

42、rd connected toconnector CN302 of the Front jack board. (See Fig.7)(8) Disconnect the connector wire from Main boards connect-ed to connector CN301 of the DVD module board. (SeeFig.7)Fig.73.1.3 Removing the Top chassis (See Fig.8 to 10)(1) Disconnect the card wires from Amp board connected toconnect

43、ors CN201 and CN202 of the Main board. (SeeFig.8)(2) Disconnect the connector wire from Power supply unit con-nected to connector CN103 of the Amp board. (See Fig.8)(3) Disconnect the connector wire from Main board connectedto connector CN104 of the Amp board. (See Fig.8)Fig.8(4) Remove the nine scr

44、ews E attaching the Top chassis. (seeFig.9)Fig.9(5) Remove the four screws F attaching the both side of theTop chassis. (See Fig.10)Fig.103.1.4 Removing the Amp board (See Fig.11)(1) Remove the three screws G attaching the Heat sink.(2) Remove the four screws H attaching the Amp board.Fig.11hook bCN

45、531 CN302CN301CN202 CN104CN201 CN103EFHG1-8 (No.MB695)3.1.5 Removing the Main board (See Fig.12, 13)(1) Disconnect the connector wire from FAN connected to con-nector CN461 of the Main board. (See Fig.12)(2) Disconnect the connector wire from Power supply unit con-nected to connector CN981 of the Ma

46、in board. (See Fig.12)(3) Disconnect the card wires from DVD module board con-nected to connectors, CN481, CN661 and CN701 of theMain board. (See Fig.12)(4) Disconnect the card wire from Tuner pack connected toconnector CN421 of the Main board. (see Fig.12)(5) Disconnect the card wire from Loader bo

47、ard connected toconnector CN451 of the Main board. (See Fig.12)Fig.12(6) Remove the four screws J attaching the Main board. (seeFig.13)Fig.133.1.6 Removing the Rear panel (See Fig.14)(1) Remove the four screws K and one screw L attaching theRear panel.Fig.143.1.7 Removing the DVD mechanism (See Fig.

48、15)(1) Remove the three screws M attaching the DVD moduleboard.(2) Remove the one screw N attaching the DVD mechanism.Fig.153.1.8 Removing the Power supply unit (see Fig.16)(1) Remove the five screws P attaching the Power supply unit.Fig.16CN451 CN981CN701 CN481CN461 CN661CN421JKKLMNPP(No.MB695)1-93

49、.1.9 Removing the Front jack board (See Fig.17)(1) Remove the three screws Q attaching the Front jack board.Fig.173.1.10 Removing the Front board (See Fig.18)(1) Remove the six screws R attaching the Front board.Fig.18QR1-10 (No.MB695)3.2 DVD mechanism assembly3.2.1 Removing the traverse mechanism (See Fig.1 to 6)(1) Remove the two screws A attaching the tramecha holderfrom top side of DVD mechanism assembly. (See Fig.1)Fig.1(2) Remove the two screws B attaching the DVD mod