JVC-XVN40BK-cd-sm 维修电路原理图.pdf

SERVICE MANUALCOPYRIGHT 2003 VICTOR COMPANY OF JAPAN, LIMITED.No.XA0032003/5DVD VIDEO PLAYERXA00320035XV-N40BKMK2,XV-N44SLMK2,XV-N4SLMK2TABLE OF CONTENTS1Important Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-42Disassembly method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-83Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-154Description of major ICs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-24Area Suffix (XV-N40BK,XV-N44SL)J - U.S.A.C - CanadaArea Suffix (XV-N4SL)C - Canada258147369010+10CANCELTITLE/GROUPRETURNVFPPROGRESSIVE SCANREPEATZOOMDIMMERAUDIO3DPHONICSUB TITLEANGLEOPEN/CLOSEDISPLAYNEXTPREVIOUSSELECTCLEARSLOW-SLOW+TOPMENUMENUONSCREENCHOICEENTERSTANDBY/ONV I D E OThis service manual is a service manual of the model which changes a part of specification of the above-mentioned model which has already been put on the market. Please refer to the following page for details. This illustration is XV-N40BK for U.S.ARadioFans.CN 收音机爱 好者资料库1-2 (No.XA003)For this service manualThis service manual is a service manual of the model which changes a part of specification of the above-mentioned modelwhich has already been put on the market. The specification is different from what the label of the same model does not paste because of the specification improvement,and refer to this service manual, please. Please already refer to the issued service manual when the label is not pasted. * Please refer to this service manual for the model to which this label is pasted. * Please refer to the service manual which has already been issued for the model to which this label is not pasted. (one that there is no description named MK2 in cover of service manual. )0478insideUsed only service dealerPlease refer to service manual of an applicable model MK2GN30080-001AThe surface of a rear panelorRadioFans.CN 收音机爱 好者资料库(No.XA003)1-3SPECIFICATIONGeneralOtherVideo outputsAudio outputsAudio characteristics Specifications and appearance are subject to change without prior notice. Manufactured under license from Dolby Laboratories. Dolby and the double-D symbol are trademarkes of Dolby Laboratories. Manufactured under license from Digital Theater Systems, Inc. DTS and DTS Digital Surround are registered trademarks of Dig-ital Theater Systems, Inc.Digital output signal chartReadable discsDVD VIDEO, DVD-R (Video format), DVDRW (Video format), +RW (Video format), SVCD, Video CD,Audio CD (CD-DA), MP3 format, JPEG, CD-R/RW (CD-DA, SVCD, Video CD, MP3 format, JPEG) Video formatNTSC, 480i (Interlaced scan)/480p (Progressive scan) selectablePower requirementsAC 120 V, 60 HzPower consumption10 W (POWER ON) 0.7 W (STANDBY mode) Mass2.1 kg (4.7 lbs)Dimensions (W x H x D)435mm x 53mm x 248.4mm (17-3/16 inch x 2-1/8 inc x 9-13/16 inch)COMPONENT (pin jacks)Y Output: 1.0 Vp-p (75 )Pb/Pr Output: 0.7Vp-p (75 )VIDEO OUT (pin jack)1.0 Vp-p (75 )S-VIDEO OUT (S jack)Y Output: 1.0 Vp-p (75 )C Output: 286 mVp-p (75 )Horizontal resolution500 lines or moreANALOG OUT (pin jack)2.0 Vrms (10 k)DIGITAL OUT (COAXIAL)0.5 Vp-p (75 termination)DIGITAL OUT (OPTICAL)-21 dBm to -15 dBm (peak)Frequency responseCD (sampling frequency 44.1 kHz):2 Hz to 20 kHzDVD (sampling frequency 48 kHz):2 Hz to 22 kHz(4 Hz to 20 kHz for DTS and Dolby Digital bitstream signals)DVD (sampling frequency 96 kHz):2 Hz to 44 kHzDynamic range16 bit: More than 98 dB20 bit: More than 100 dB24 bit: More than 100 dBWow and flutterUnmeasurable (less than + 0.002%)Total harmonic distortionless than 0.006%Disc typeOutputPCM ONLYDOLBY DIGITAL/PCMSTREAM/PCMDVD with 48/44.1 kHz, 16/20/24 bit linear PCM48/44.1 kHz, 16 bit, stereo linear PCMDVD with 96 kHz, 16/22/24 bit linear PCM48kHz, 16 bit, stereo linear PCM (Down sampling)DVD with DTSNo outputDTS bitstreamDVD with Dolby Digital48 kHz, 16 bit, stereo linear PCMDolby Digital bitstreamDVD with MPEG Multichannel48 kHz, 16 bit, stereo linear PCMMPEG bitstreamSVCD/Video CD/Audio CD44.1 kHz, 16 bit, stereo linear PCMAudio CD with DTSNo outputDTS bitstreamCD-R/RW with MP3Linear PCM1-4 (No.XA003)SECTION 1Important Safety Precautions1.1Safety 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 TYPE(No.XA003)1-51.5Preventing 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 DVD players. 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 longa time 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.1.7Precautions of the safe use of battery (Only XV-N4SL) Store the battery in a place where children cannot reach.If a child accidentally swallows the battery, consult a doctorimmediately. Do not recharge, short, disassemble or heat the battery or dispose of it in a fire.Doing any of these things may cause the battery to give off heat, crack, or start a fire. Do not leave the battery with other metallic materials.Doing this may cause the battery to give off heat, crack, or start a fire. When throwing away or saving the battery, wrap it in tape and insulate; otherwise, the battery may start to give off heat, crack, orstart a fire. Do not poke the battery with tweezers or similar tools.Doing this may cause the battery to give off heat, crack, or start a fire. Dispose of batteries in the proper manner, according to federal, state, and local regulations.1-6 (No.XA003)1.8Importance admistering point on the safety C701 C706 C902 C904 C905 C907 C908 C913 C914 C918 C950 C951 C953 C955 C957 B34 C959 B139 C965 C966 C967 B15 C973 C974 C975 B276 C977 B772 C988 B4 D901 CP951 D701 D953 CN901 D904 B873 B166 C906 EP951 FC901 FC902 IC901 IC952 J702 L709 L710 L901 L951 L952 L954 B116 L955 B532 C976 P901 B138 PC901 Q953 B45 R901 R903 R906 R910 R912 R913 R953 R954 S901 T901 X701 S902 C952 B234 C970 B236 D956 B137 L956 L957 L959 B333 B533 B771 B32 B852 B874 B872 B871 B140 B272 B332 B601 B601 B141 B16 B331 B136 B403 B271 B38 B39 B36 B142 B143 B40 B133 B134 B132 B202 B231 B233 B105 B103 B101 D955 B303 B135 CN902 B273 B631 B37 L953 R966 R951 R915 B2 B237 Q951 B203 B102 C958 D957 D954 D952 D951 D903 D902 B347 EP952 C963 C964 B107 B205 EP953 R969 C808 C802 CN904 B170 D702 K813 K811 K810 K812 K814 Full Fuse Replacement MarkingGraphic symbol mark (This symbol means fast blow type fuse.)should be read as follows ;FUSE CAUTIONFOR CONTINUED PROTECTION AGAINST RISKOF FIRE, REPLACE ONLY WITH SAME TYPEAND RATING OF FUSES ;F901 : 1.6 A / 125 VF901 : 1.6 A / 125 VMarquage Pour Le Remplacement Complet De FusiblePRECAUTIONS SUR LES FUSIBLESPOUR UNE PROTECTION CONTINUE CONTRE DES RISQUES DINCENDIE, REMPLACER SEULEMENT PAR UN FUSIBLE DU MEME TYPE ;Le symbole graphique (Ce symbole signifie fusible de type a fusion rapide.)doit etre interprete comme suit ;(No.XA003)1-71.9Precautions for Service1.9.1Handling of Traverse Unit and Laser Pickup(1) Do not touch any peripheral element of the pickup or the actuator.(2) The traverse unit and the pickup are precision devices and therefore must not be subjected to strong shock.(3) Do not use a tester to examine the laser diode. (The diode can easily be destroyed by the internal power supply of the tester.)(4) To replace the traverse unit, pull out the metal short pin for protection from charging.(5) When replacing the pickup, after mounting a new pickup, remove the solder on the short land which is provided at the center ofthe flexible wire to open the circuit.(6) Half-fixed resistors for laser power adjustment are adjusted in pairs at shipment to match the characteristics of the optical block.Do not change the setting of these half-fixed resistors for laser power adjustment. 1.9.2Destruction of Traverse Unit and Laser Pickup by Static ElectricityLaser diodes are easily destroyed by static electricity charged on clothingor the human body. Before repairing peripheral elements ofthe traverse unit or pickup, be sure to take the following electrostatic protection:(1) Wear an antistatic wrist wrap.(2) With a conductive sheet or a steel plate on the workbench on which the traverse unit or the pick up is to be repaired, ground thesheet or the plate.(3) It solders to two short circuit sections on the substrate of a pick-up.(4) After removing the flexible wire from the connector (CN101), short-circuit the flexible wire by the metal clip.(5) Short-circuit the laser diode by soldering the land which is provided at the center of the flexible wire for the pickup. After completing the repair, remove the solder to open the circuit.CN101Servo control boardPick-upShort circuit* Please refer to the disassembly method for details.1-8 (No.XA003)SECTION 2Disassembly methodThere is a part different from the photograph according to the model and the destination th