JVC-NXF40-cs-sm 维修电路原理图.pdf

SERVICE MANUALCOPYRIGHT 2009 Victor Company of Japan, LimitedNo.MB6952009/4COMPACT COMPONENT SYSTEMMB69520094 SERVICE 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 Centigrade)Lead free solder used in the board (material : Sn-Cu, melting point : 230 Centigrade)TABLE OF CONTENTS1PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-32SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-63DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-64ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-145TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15CA-NXF40SP-NXF40FCA-NXF30SP-NXF30FSP-NXF40FSP-NXF30FSP-NXF30WRadioFans.CN 收音机爱 好者资料库1-2 (No.MB695)SPECIFICATIONMain unit (CA-NXF40/CA-NXF30)Designs and specifications are subject to change without notice.TunerFM frequency87.50 MHz - 108.00 MHzTerminal (front of the main unit)USB digital input terminal 1Audio output headphone terminal 1Impedance16 - 1 kTerminal (rear of the main unit)Audio output speaker terminals 1Left/right speakersOutput power220 W (55 W 4) at 3 (1 kHz/10% THD)Impedance3 - 16 SubwooferOutput power180 W at 6 (100 Hz/10% THD)Impedance6 - 16 Optical digital input terminal 1-23 dBm to -15 dBmOptical digital output terminal 1-23 dBm to -15 dBmComponent video output terminals 1Y1.0 Vp-p, 75 terminatedPB0.7 Vp-p, 75 terminatedPR0.7 Vp-p, 75 terminatedComposite video output terminal 11.0 Vp-p, 75 terminatedAudio input terminals 1500 mV/47 kHDMI monitor output terminal 1FM antenna terminal 1USBCompatible with USB 2.0 Full-SpeedCompatible deviceUSB mass storage class deviceCompatible file systemFAT16, FAT32Output powerDC 5 V = 500 mAHDMIOutput powerDC 5 V = 55 mAGeneralPower sourceAC 230 V , 50 HzPower consumption (in operation)100 WPower consumption (on standby)1 W or lessDimensions (W H D) including projecting parts312 mm 95 mm 312.3 mmMass3.5 kgSpeakers (SP-NXF40F/SP-NXF30F)Type1-way bass reflex typeMagnetically shielded typeSpeaker driverFront ch5.5 cm coneSurround ch5.5 cm conePower handling capacityFront ch55 WSurround ch55 WImpedance3 Frequency range80 Hz - 20 kHzSound pressure level77 dB/W/mDimensions (W H D) including projection parts88 mm 203 mm 127 mmSubwoofer (SP-NXF30W)TypeBass reflex typeSpeaker driver16 cm conePower handling capacity180 WImpedance6 Frequency range30 Hz - 200 HzSound pressure level76 dB/W/mDimensions (W H D)300 mm 301 mm 303 mmMass8.2 kgRadioFans.CN 收音机爱 好者资料库(No.MB695)1-3SECTION 1PRECAUTION1.1Safety 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 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 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 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 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 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 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 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 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 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 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 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 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 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.(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 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 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 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 TYPE1-4 (No.MB695)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 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 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 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 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 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 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 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 text for the pickup unit. Apply solder to the short land sections before the card wire is 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 sheet) or iron palate(caption)Anti-static wrist strapSolder short land section(No.MB695)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 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.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 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 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 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 2SPECIFIC SERVICE INSTRUCTIONSThis service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.SECTION 3DISASSEMBLY3.1Main body (Used figure are NX-F30E)3.1.1Removing 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 knob 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.3.1.2Removing the Front panel (See 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 aCN561DD(No.MB695)1-7(4) Disengage 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 board 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.73.1.3Removing the Top chassis (See Fig.8 to 10)(1) Disconnect the card wires from Amp board connected toconnectors 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 screws 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.103.1.4Removing 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 bCN531CN302CN301CN202CN104CN201CN103EFHG1-8 (No.MB695)3.1.5Removing 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 Main 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 board 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.133.1.6Removing the Rear panel (See Fig.14)(1) Remove the four screws K and one screw L attaching theRear panel.Fig.143.1.7Removing the DVD mechanism (See Fig.15)(1) Remove the three screws M attaching the DVD moduleboard.(2) Remove the one screw N attaching the DVD mechanism.Fig.153.1.8Removing the Power supply unit (see Fig.16)(1) Remove the five screws P attaching the Power supply unit.Fig.16CN451CN981CN701CN481CN461CN661CN421JKKLMNPP(No.MB695)1-93.1.9Removing 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)3.2DVD mechanism assembly3.2.1Removing 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 moduleboard. (See Fig.2)Fig.2(3) Remove the four screws C attaching the CB holder andtake out it. (See Fig.3)Fig.3(4) Remove the four screws D attaching the t