JVC-XVC5SL-cd-sm 维修电路原理图.pdf

SERVICE MANUALCOPYRIGHT 2003 VICTOR COMPANY OF JAPAN, LTD.No.XA0012003/5DVD VIDEO PLAYERXA00120034XV-C5SLTABLE OF CONTENTS1Important Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32Disassembly method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164Description of major ICs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26TV22TV11TV33TV55TV44TV66TV88TV77TV99TV00TV-/-10MUTING+10VFPZOOMAUDIODIMMERSUB TITLEREPEATANGLE3DPHONICAMP VOLEJECT DISPLAYTVDVDNEXTPREVIOUSSELECTCLEARSLOW SLOW +CH+CHENTERSTANDBY/ONTVDVDRETURNVOLVOL+TITLE/GROUPTV/VIDEOCANCELTOPMENUMENUONSCREENCHOICEArea SuffixB - U.K.E - Continental EuropeEN - Northern EuropeEV - Eastern EuropeEE - Russian FederationUS - SingaporeUG - Turkey,South Africa,EgyptUB - Hong KongRadioFans.CN 收音机爱 好者资料库1-2 (No.XA001)SPECIFICATION Specifications and appearance are subject to change without prior notice. Manufactured under license from Dolby Laboratories. Dolby and the double-D symbol are trademarks of Dolby Laboratories. Con-fidential unpublished works. Manufactured under license from Digital Theater Systems, Inc. DTS, DTS Digital Surround, are trademarks of Digital TheaterSystems, Inc.Digital output signal chartGeneralReadable discsDVD VIDEO, DVD-R (Video format),DVD-RW (Video format), +RW(Videoformat), SVCD, Video CD,Audio CD (CD-DA), MP3 format,JPEG, CD-R/RW (CD-DA, SVCD,Video CD, MP3 format, JPEG)Video formatPALOtherPower requirementsAC 230 V , 50 HzPower consumption12 W (POWER ON), 0.7 W (STANDBY mode)Mass1.7 kgDimensions (W x H x D)218 mm x 58 mm x 270 mmVideo outputsVIDEO OUT (pin jack)1.0 Vp-p (75 )Horizontal resolution500 lines or moreRGB700 mVp-p (75 )Audio 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 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 kHz 16/20/24 bit linear PCM48 kHz 16 bit stereo linear PCMDVD with 96 kHz 16/20/24 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 PCMRadioFans.CN 收音机爱 好者资料库(No.XA001)1-3SECTION 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 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.XA001)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.XA001)1-51.7Important for laser products (1) CLASS 1 LASER PRODUCT(2) DANGER : Invisible laser radiation when open and interlock failed or defeated. Avoid direct exposure to beam.(3) CAUTION : There are no serviceable parts inside the Laser Unit. Do not disassemble the Laser Unit. Replace thecomplete Laser Unit if it malfunctions.(4) CAUTION : The compact disc player uses invisible laserradiation and is equipped with safety switches which prevent emission of radiation when the drawer is open andthe safety interlocks have failed or are de feated. 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 ofprocedures other than those specified herein may result inhazardous radiation exposure.CAUTIONPlease use enough caution not to see the beam directlyor touch it in case of anadjustment or operation check.VARNINGOsynlig laserstrlning r denna del r ppnad och sprren rurkopplad. Betrakta ej strlen.VAROAvattaessa ja suojalukitus ohitettaessa olet alttiina nkymt-tmlle lasersteilylle. l katso steeseen.ADVARSELUsynlig laserstrling ved bning, nr sikkerhedsafbrydere erude af funktion. Undg udsasttelse for strling.ADVARSELUsynlig laserstrling ved pning, nr sikkerhetsbryteren er avs-lott. unng utsettelse for strling.REPRODUCTION AND POSITION OF LABEL and PRINTWARNING LABEL and PRINTCLASS 1LASER PRODUCT1-6 (No.XA001)1.8Precautions for Service1.8.1Handling 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. 1.8.2Destruction 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) After removing the flexible wire from the connector (CN101), short-circuit the flexible wire by the metal clip.(4) 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 circuitCN101DVD Servo control boardFlexible wireCN202CN201DVD Mechanism(No.XA001)1-71.9Caution on disassembly of the main bodyThe power supply board is a board at the power supply first level. Since the pattern side of this board is not covered with anything after removing the bottom cover of the main body, be sure to pull outthe power cord from the wall socket before disassembly and assembly procedure. If turning the power on without the bottom cover, be careful enough not to touch the power supply board.Power supply board1-8 (No.XA001)SECTION 2Disassembly methodThere is a part different from the photograph according to the destination though explains this disassembly method by using XV-C5SL for Eastern Europe.2.1Main body section2.1.1Removing the bottom cover (See Figure 1, Figure 2)(1) Remove the three rubber caps on the bottom of the mainbody.*Remove the rubber caps by peeling them with your nailsbecause they are only inserted in the holes. (See Figure 2)(2) Remove the three screws A (long) and one screw B (short)attaching the bottom cover on the bottom of the main body.(3) Lift the bottom cover, and remove it.Fig.1Fig.2Rubber cap and screw ABottom coverARubber cap and screw BRubber cap and screw ASide fitting LRubber cap(No.XA001)1-92.1.2Removing the mechanism assembly (See Figure 3, Figure 4, Figure 5) Prior to the following procedure, remove the bottom cover.(1) Remove the four screws C attaching the bottom plate.(2) Disconnect the flat wire from the connector CN811 on theservo control board.(3) Disconnect the connector wire from the connector CN802on the FL display board.(4) Remove the main body from the top cover.(5) Remove the three screws D attaching the mechanism as-sembly.(6) Disconnect the connector wires from the connector CN501and CN502 on the servo control board.(7) Disconnect the card wire from the connector CN611 on theservo control board.Fig.3Fig.4Fig.5Side fitting LBottom plateCCCSide fitting RTop coverServo control boardFL Display boardCN811CN802CN611DDCN501CN502DServo control board1-10 (No.XA001)2.1.3Removing the Power supply board (See Figure 6) Prior to the following procedure, remove the bottom cover andthe mechanism assembly.(1) Remove the two screws E attaching the power supplyboard.(2) Remove the five screws F attaching the power supplyboard from the rear side.(3) Disconnect the card wire from the connector CN711 on thepower supply board.(4) Remove the power cord from the socket P901 on the pow-er supply board.*To remove the power supply