JVC-XVN510B-cd-sm 维修电路原理图.pdf

SERVICE MANUALCOPYRIGHT 2004 Victor Company of Japan, LimitedNo.YD0162004/8DVD AUDIO/VIDEO PLAYERYD01620048XV-N510B,XV-N512STABLE OF CONTENTS1PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-32SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-63DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-74ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-155TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-22Area SuffixJ - U.S.A.C - CanadaSTANDBY/ON258147369010+10TITLE/GROUPTV/VIDEOCANCELRETURNPAGEVOLVOL+ CH+CHVFPZOOMAMPVOLAUDIO3D PHONICSUB TITLEANGLEDIMMERREPEATOPEN/CLOSETV1TV2TV3TV4TV5TV6TV7TV8TV9TV-/-TV0MUTINGTVDVDNEXTPREVIOUSSELECTCLEARSLOW-SLOW+TOPMENUMENUONSCREENSETUPENTERTVDVDPROGRESSIVE SCANfs/RateXV-N510BJC, XV-N510BCC, XV-N512SJC, XV-N512SCCRadioFans.CN 收音机爱 好者资料库1-2 (No.YD016)SPECIFICATION Manufactured under license from Dolby Laboratories. “Dolby”,”MLP Lossless and the double-D symbol are trademarks of DolbyLaboratories. “DTS” and “DTS Digital Surround” are registered trademarks of Digital Theater Systems, Inc. This product incorporates copyright protection technology that is protected by U.S. patents and other intellectual property rights. Useof this copyright protection technology must be authorized by Macrovision, and is intended for home and other limited viewing usesonly unless otherwise authorized by Macrovision. Reverse engineering or disassembly is prohibited.Digital output signal chartXV-N510B,XV-N512S for J,CGeneralReadable discsDVD AUDIO, DVD VIDEO, DVD-R (Video format), DVD-RW (Video format/VR format), DVD-RAM (VRformat), SVCD, Video CD, Audio CD (CD-DA), CD-R/RW (CD-DA, SVCD, Video CD, MP3/WMA format,JPEG)Video formatREMOTE, 480i (Interlaced scan)/480p (Progressive scan) selectableOtherPower requirementsAC 120 V, 60 HzPower consumption13 W (POWER ON), 2.0 W (STANDBY mode)Mass1.9 k g (4.2 lbs)Dimensions (W H D)435 mm 44 mm 258.6 mm (17-3/16 inch 1-3/4 inch 10-3/16 inch)Video outputsCOMPONENT (pin jacks)Y Output: 1.0 Vp-p (75 )PB/PR Output: 0.7 Vp-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 moreAudio outputsANALOG 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)Audio characteristicsFrequency 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 kHzDVD (sampling frequency 192 kHz/176.4 kHz):2 Hz to 88 kHzDynamic range16 bit: More than 98 dB20 bit/24 bit: More than 106 dBWow and flutterUnmeasurable (less than +- 0.002%)Total harmonic distortion16 bit: less than 0.006%20 bit/24 bit: less than 0.005%* Notes for PX model (Check the specification indication on the rear panel.)Power requirements AC 110 V to 240 V , 50 Hz/60 HzPower consumption 13 W (POWER ON), 2.0 W(STANDBY mode)Disc typeOutputPCM ONLYDOLBY DIGITAL/PCMSTREAM/PCMDVD with 48/44.1 kHz, 16/20/24bit linear PCMDVD AUDIO with MLP48/44.1 kHz, 16/20/24 bit, stereo linear PCMDVD with 192/176.4/96/88.2 kHz,16/22/24 bit linear PCMDVD AUDIO with MLP48/44.1 kHz, 16/20/24 bit, stereo linear PCM (Down sampling)DVD with DTS48 kHz, 16 bit, stereo linear PCMDTS bitstreamDVD with Dolby Digital48 kHz, 16 bit, stereo linear PCMDolby Digital bitstreamSVCD/Video CD/Audio CD44.1 kHz, 16 bit, stereo linear PCMAudio CD with DTS44.1kHz, 16 bit, stereo linear PCMDTS bitstreamCD-R/RW with MP3/WMALinear PCMRadioFans.CN 收音机爱 好者资料库(No.YD016)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 testing)After 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 ohms per volt or more sensi-tivity in the following manner. Connect a 1,500 ohm 10Wresistor paralleled by a 0.15 F AC-type capacitor be-tween an exposed metal part and a known good earthground.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 critical forsafety. When replacing them, be sure to use the parts of thesame type and rating as specified by the manufacturer. (Exceptthe JC version)1-4 (No.YD016)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 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.(No.YD016)1-51.7Precautions for Service1.7.1Handling 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. 1.7.2Destruction 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.Short circuit Pick-up*Please refer to the disassembly method for details.Gear1Main boardCN1011-6 (No.YD016)SECTION 2SPECIFIC SERVICE INSTRUCTIONSThis service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.(No.YD016)1-7SECTION 3DISASSEMBLY3.1Main body section3.1.1Removing the top cover (See Figure 1)(1) Remove the two screws A attaching the top cover on bothsides of the main body.(2) Remove the three screws B attaching the top cover on theback of the main body.(3) Raise the both sides and lower part of the rear of the topcover, with opening them slightly in an outward direction.And the top cover will be removed.Fig.1BBBA x 2TOP COVERTOP COVERTOP COVER1-8 (No.YD016)3.1.2Removing the mechanism assembly (See Figure 2, Figure 3, Figure 4) Prior to performing the following procedure, remove the topcover. There is no need to remove the front panel assembly.(1) Insert a kind of screwdriver in a hole located in the rightside of mechanism assembly, and push a lever until it can-not be inserted any further.(2) And then, a tray will come out. Remove the tray in an upperdirection, with slightly opening the lower part of fitting in anoutward direction.(3) Remove the three screws C attaching the mechanism as-sembly. (4) A tray is made to slide ahead.(5) A gear 1 is turned counterclockwise. Then, a pick-up unitmoves back.(6) It solders to two a sections on the pick-up unit.(7) Disconnect the card wire from connector CN201, CN202,CN101 on the main board.ATTENTION:Please extract the wire after short-circuited of two placeson the wire in part a with solder. Please remove the sol-der two places of part a after connecting the wire withCN101 when reassembling.CAUTION:Be sure to solder the short land sections “a” on the pick-up unit before disconnecting the card wire from connec-tor CN101 on the main board.If the card wire is disconnected without attaching solder,the pick-up unit may be destroyed by static electricity. (8) Remove the mechanism assembly by lifting the rear part ofthe mechanism assembly.Fig.2Fig.3Fig.4Front panel assemblyMechanism assemblyTrayFittingHole and leverPushPushCN201Main boardCCCCN101Mechanism assemblyCN202Part aPick-upGear1Main boardCN101(No.YD016)1-93.1.3Removing the front panel assembly (See Figure 5, Figure 6, Figure 7) Prior to performing the following procedure, remove the topcover and mechanism assembly.(1) Disconnect the card wire from connector CN3 on the powerboard.(2) Hook b and c are removed respectively, and the front panelassembly is removed.(3) Remove the three screws D attaching the FL display board.(4) Disconnect the card wire from connector CN801 on the FLdisplay board.Fig.5Fig.6Fig.73.1.4Removing the rear panel (See Figure 8) Prior to performing the following procedure, remove the topcover.(1) Remove the eight screws E attaching the rear panel.(2) Remove the power cord bushing.Fig.8Power boardCN3Front panel assemblyHook bHook bHook cHook cFront panelassemblyHook cFront panel assemblyDDFL Displ