Jvc-UXEP-25-EN-Service-Manual电路原理图.pdf
SERVICE MANUALCOPYRIGHT © 2006 Victor Company of Japan, LimitedNo.MB5762006/10MICRO COMPONENT SYSTEMMB576200610UX-EP25J,UX-EP25C,UX-EP25E,UX-EP25ENLead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade)TABLE OF CONTENTS1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-32 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-63 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-74 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-145 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15CA-UXEP25 SP-UXEP25SP-UXEP251-2 (No.MB576)SPECIFICATIONDesign and specifi cations are subject to change without notice.Amplifi er Output Power Nortern america :7.5 W per channel, min. RMS, driven into 6 at 1kHz, with no more than 10% total harmonic distortionEurope :5 W per channel, min. RMS, driven into 6 at 1kHz, with no more than 10% total harmonic distortion (IEC 268-3)Terminals Input Sensitivity/Impedance (1 kHz)AUX IN LEVEL1 500 mV/47 kLEVEL2 125 mV/47 kUSB Audio ver. 1.1USB Host ver. 1.1Compatible device Mass Storage ClassCompatible fi le system FAT16, FAT32Bus power supply Max. 5V/500 mACompatible iPod types iPod nano 1G/2G/4GiPod miniiPod (4th Generation) 20G/40GiPod photo (4th Generation) 20G/30G/40G/60GiPod video (5th Generation) 30G/60GBus power supply Max. 5V/500 mASpeaker terminals 6 - 16 Phones 32 - 1 k15 mW/ch output into 32 CD Player Dynamic Range 85 dBSignal-To-Noise Ratio 85 dBWow And Flutter UnmeasurableTuner Tuning Range FM Tuner 87.5 MHz - 108.0 MHzAM Tuner Nortern america : 530 kHz - 1 710 kHzEurope : 522 kHz - 1 629 kHzUnit Dimensions 260 mm × 75 mm × 185 mm (10-1/4“ × 3“ × 7-5/16“) (W/H/D)Mass Approx. 2.1 kg (4.7 lbs)Speaker Specifi cations(each unit)Type Full range bass-refl ex typeSpeaker Unit 8 cm (3-3/16“) cone × 1Power handling Capacity 10 WImpedance 6 Frequency Range 135 Hz - 18 kHzSound pressure level 83 dB/W · mDimensions 118 mm × 197 mm × 165 mm (4-11/16“ × 7-13/16“ × 6-1/2“) (W/H/D)Mass Approx. 1.3 kg (2.9 lbs)Power Specifi cations Power Requirements Nortern america : AC 120 V 60 HzEurope : AC 230 V 50 HzPower Consumption 35 W (power on mode)1.5 W (in Standby mode)(No.MB576)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 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 a“Leakage 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 0.15µF 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.). 1.2 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.(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-forming 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 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.MB576)1.5 Importance administering point on the safetyGraphic symbol mark (This symbol means fast blow type fuse.)FOR CONTINUED PROTECTION AGAINST RISKOF FIRE, REPLACE ONLY WITH SAME TYPEAND RATING OF FUSES ;should be read as follows ;F902 : 400mA 250V F902 : 400mA 250VFull Fuse Replacement MarkingFUSE CAUTIONLe symbole graphique (Ce symbole signifiefusible de type a fusion rapide.)POUR UNE PROTECTION CONTINUE CONTREDES RISQUES D'INCENDIE, REMPLACERSEULEMENT PAR UN FUSIBLE DU MEME TYPE ;Marquage Pour Le RemplacementComplet De FusiblePRECAUTIONS SUR LES FUSIBLESdoit etre interprete comme suit ;fast blow type / type a fusion rapide+-JK201C106C108C107J131C128C133J116J115R105J112J113J114CN910D901Q907C932C148C911C143C145J101J102C144IC103J103IC904C923L101D922D907J121L103J122J124J132IC903C901CN912CN913D902R910C914PR904CN909CN901R905R904D916D915D914 D917C907J126CN101 J125J109JK101PT901L119FC903 F902FC904CN902L901J129J135J128 R909CN103RY901X201RT901L116J105 J106D104J137 J104CN104J107 J108 C924PR903CN908C164D918Q912L104D103CN102C125J110J111C120 C118C109 C110C136C131J117C903J120L102IC902J130J118J119R110C134C135C126C127C129 C130D903C918Q903C916C104C105C103C111C112C919D904L902C909R901CN911C933R902 D912Q901R923D919J123 D905J127CN907C904D908L117L118 CN903J136120V230V(No.MB576)1-51.6 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 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 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 ableto 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.MB576)SECTION 2SPECIFIC SERVICE INSTRUCTIONSThis service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.(No.MB576)1-7SECTION 3DISASSEMBLY3.1 Main body3.1.1 Removing the Top cabinet assembly (See Fig.1, 2)(1) Remove the six screws A attaching the Top cabinet as-sembly. (See Fig.1)(2) Disconnect the connector wires from Function board as-sembly connected to connector CN505 of the CD servoboard assembly and disconnect the connector wire fromDoor motor board assembly connected to connectorCN507 of the CD servo board assembly. (See Fig.2)Fig.1Fig.2AACN505CN507Function Board1-8 (No.MB576)3.1.2 Removing the CD mechanism assembly (See Fig.3, 4)(1) Disconnect the connector wire from Traverse mechanismassembly connected to connector CN401 of the CD servoboard assembly. (See Fig.4)(2) Solder the solder point the flexible wire of the pickup, anddisconnect the flexible wire from the pickup connected toconnector CN402 of the CD servo board assembly. (SeeFig.4, 3)CAUTION:Do not disconnect the flexible wire before soldering, if not sol-dering pickup be damaged by static electricity.Fig.3Fig.4CN402CN401Solder point(No.MB576)1-93.1.3 Removing the CD servo board assembly (See Fig.5, 6)(1) Disconnect the card wire from Tuner pack connected toconnector CN504 of the CD servo board assembly. (SeeFig.5)(2) Disconnect the card wires from Main board assembly con-nected to connector CN501 and CN502 of the CD servoboard assembly. (See Fig.5)(3) Disconnect the connector wire from USB board assemblyconnected to connector CN506 of the CD servo board as-sembly. (See Fig.5)(4) Disconnect the connector wire from Main board assemblyconnected to connector CN510 of the CD servo board as-sembly. (See Fig.5)(5) Disconnect the connector wire from iPod jack board as-sembly connected to connector CN508 of the CD servoboard assembly. (See Fig.5)(6) Disconnect the connector wire from FL board assemblyconnected to connector CN503 of the CD servo board as-sembly. (See Fig.5)(7) Remove the on screw B attaching the grand wire from CDservo board attached to Main board assembly. (See Fig.6)Fig.5Fig.6CN504 CN501CN502CN506CN503CN508CN510B1-10 (No.MB576)3.1.4 Removing the Center cabinet assembly (See Fig.7 to 9)(1) Remove the four screws C attaching the cover. (See Fig.7)(2) Remove the two screws D attaching the Tuner pack. (SeeFig.7)(3) Remove the two screws E attaching the speaker jack. (SeeFig.7)(4) Remove the one screw F attaching the Center cabinet.(See Fig.8)(5) Disengage the eight hooks a engaged Center cabinet as-sembly. (See Fig.9)Fig.7Fig.8Fig.9CCDEEFaaa
