Jvc-XVS-502-SL-Service-Manual电路原理图.pdf

SERVICE MANUALDVD VIDEO PLAYERNo.A0027Feb. 2002COPYRIGHT 2002 VICTOR COMPANY OF JAPAN, LTD.XV-S500BK / XV-S502SLXV-S500BK / XV-S502SLArea SuffixJ - U.S.A.C - CanadaThis service manual is printed on 100% recycled paper.ModelXV-S500BKXV-S502SLBody colorBlackSilverEach difference pointContentsSafety precautions - 1-2Preventing static electricity - 1-3Importance admisteringpoint on the safety - 1-4Precautions for service - 1-5Disassembly method - 1-6Adjustment method - 1-15Attention when pick-up is exchanged - 1-19Confirm method of operation - 1-20Troubleshooting - 1-21Description of major ICs - 1-25Glossary of term and abbreviations - 1-46STANDBYSTANDBY/ONPROGRESSIVEPAUSEPLAYSTOP 387OPEN/CLOSE0 SKIP44DVD/SUPER VCD/VCD/CD PLAYERTV22TV11TV33TV55TV44TV66TV88TV77TV99TV00TV-/-10MUTING+10TV/VIDEOCANCELTITLE/GROUPSUBTITLERETURNVFPAUDIOSUBTITLEREPEATANGLEDIGEST3DPHONICZOOMAMP VOLPROGRESSSIVESCANRM-SXV008JREMOTE CONTROLOPEN/CLOSETV DVDNEXTPREVIOUSSELECT STROBECLEARSLOW- SLOW+VOL- VOL+CH+CH-TOP MENU MENUON SCREENCHOICEENTERSTANDBY/ONTV DVDXV-S500BK/XV-S502SL1-21. This design of this product contains special hardware and many circuits and components specially for safety purposes. For continued protection, no changes should be made to the original design unless authorized in writing by the manufacturer. Replacement parts must be identical to those used in the original circuits. Services should be performed by qualified personnel only.2. Alterations of the design or circuitry of the product should not be made. Any design alterations of the product should not be made. Any design alterations or additions will void the manufacturers warranty and will further relieve the manufacture of responsibility for personal injury or property damage resulting therefrom.3. Many electrical and mechanical parts in the products have special safety-related characteristics. These characteristics are often not evident from visual inspection nor can the protection afforded by them necessarily be obtained by using replacement components rated for higher voltage, wattage, etc. Replacement parts which have these special safety characteristics are identified in the Parts List of Service Manual. Electrical components having such features are identified by shading on the schematics and by ( ) on the Parts List in the Service Manual. The use of a substitute replacement which does not have the same safety characteristics as the recommended replacement parts shown in the Parts List of Service Manual may create shock, fire, or other hazards.4. The leads in the products are routed and dressed with ties, clamps, tubings, barriers and the like to be separated from live parts, high temperature parts, moving parts and/or sharp edges for the prevention of electric shock and fire hazard. When service is required, the original lead routing and dress should be observed, and it should be confirmed that they have been returned to normal, after reassembling.5. Leakage current check (Electrical shock hazard testing)After reassembling the product, always perform an isolation check on the exposed metal parts of the product (antenna terminals, knobs, metal cabinet, screw heads, headphone jack, control shafts, etc.) to be sure the product is safe to operate without danger of electrical shock.Do not use 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 current from each exposed metal parts of the cabinet, particularly any exposed metal part having a return path to the chassis, to a known good earth ground. Any leakage current must not exceed 0.5mA AC (r.m.s.).Alternate check methodPlug the AC line cord directly into the AC outlet. Use an AC voltmeter having, 1,000 ohms per volt or more sensitivity in the following manner. Connect a 1,500 10W resistor paralleled by a 0.15 F AC-type capacitor between an exposed metal part and a known good earth ground.Measure the AC voltage across the resistor with the AC voltmeter. Move the resistor connection to each exposed metal part, particularly any exposed metal part having a return path to the chassis, and measure the AC voltage across the resistor. Now, reverse the plug in the AC outlet and repeat each measurement. Voltage measured any must not exceed 0.75 V AC (r.m.s.). This corresponds to 0.5 mA AC (r.m.s.). 1. This equipment has been designed and manufactured to meet international safety standards.2. It is the legal responsibility of the repairer to ensure that these safety standards are maintained.3. Repairs must be made in accordance with the relevant safety standards.4. It is essential that safety critical components are replaced by approved parts.5. If mains voltage selector is provided, check setting for local voltage.Good earth groundPlace this probe on each exposedmetal part.AC VOLTMETER(Having 1000 ohms/volts,or more sensitivity)1500 10W0.15 F AC TYPE!Burrs formed during molding may be left over on some parts of the chassis. Therefore, pay attention to such burrs in the case of preforming repair of this system.In regard with component parts appearing on the silk-screen printed side (parts side) of the PWB diagrams, the parts that are printed over with black such as the resistor ( ), diode ( ) and ICP ( ) or identified by the “ “ mark nearby are critical for safety. When replacing them, be sure to use the parts of the same type and rating as specified by the manufacturer. (Except the J and C version)XV-S500BK/XV-S502SL1-3Preventing static electricityElectrostatic discharge (ESD), which occurs when static electricity stored in the body, fabric, etc. is discharged, can destroy the laser diode in the traverse unit (optical pickup). Take care to prevent this when performing repairs.1.1. 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. 1.1.1. Ground the workbench1. Ground the workbench by laying conductive material (such as a conductive sheet) or an iron plate over it before placing the traverse unit (optical pickup) on it.1.1.2. Ground yourself1. Use an anti-static wrist strap to release any static electricity built up in your body. 1.1.3. Handling the optical pickup1. In order to maintain quality during transport and before installation, both sides of the laser diode on the replacement optical pickup are shorted. After replacement, return the shorted parts to their original condition. (Refer to the text.)2. Do not use a tester to check the condition of the laser diode in the optical pickup. The tester's internal power source can easily destroy the laser diode. 1.2. Handling 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 the replacement procedure in the text. Remove the anti-static pin when replacing the traverse unit. Be careful not to take too long a time when attaching it to the connector. 3. Handle the flexible cable carefully as it may break when subjected to strong force. 4. It is not possible to adjust the semi-fixed resistor that adjusts the laser power. Do not turn itConductive material (conductive sheet) or iron plate(caption)Anti-static wrist strapXV-S500BK/XV-S502SL1-4Full 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 D'INCENDIE, 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 ;Importance Admistering point on the Safety Q953D971B4B3R992EP902B516B13R981C1C2C5C971C707C711C714C716C717C730C731C737C738C740C741C742C743C744C745C746C747C750 C751C752C753C754C755C756C757C761C762C771C772C801B399C806IC1100C808C1100C810C812C813C814C815C1101C817C818B52C902C903C905C906C907C908C909B433C913C914B157C960C962C963C965C966C969C985C978C979C982C984C987C989B711C997C1701C1702CN701CN801CP951B319B320B216B75L1701D901D902D903D904D908B44B78C991D951D952D954D956D957D960D991DI1EP711EP951FC901FC902C992B89D998IC901J700J701J702J703J801J802J804CN802HS952K801K902L709 L710B88L901L952L955L957L959PC901B77Q743Q744Q753Q754Q755Q756Q951Q991B308Q21R711R712R713R715R726R731R740R741R742R743R1500R746R748R750R751R752R753R1501R756R758R761R762R764R765R766R767R771R772R774R775R776R777R780 R781R782R783R790R791R792R793R797R818X1B5R901R903R905R906R907R908R920R956R1721RA1RA2RA3S801T901T1701Q22B15B17B18B19B20B21B12B24B25B26B27B28B29B30B31B32B33 B34B35B36B37B38B39B80B40D828B42 B43B515B45B46B48B49B50B55B54B229B56B57B58B875B61B62B64B65B66B67D905B69B101B102B103B104B105B106 B107B108B109B110B111B112B113B114B115C748B118B119 C749B83B123B125B126B127B128B129B130B131B132 B133B79B202B203B204B205B206B207B208B209B212B215B218B219B220B223B224B225B226B170C994B301B302B303HS901B81B304B305B306B307 B309B311B313B314B315B316B317B318B321B322B323B324B325 B326B327 B328B329B611C700B402B403B404B405C703IC701B409B410B411B412B413B414B415B416B417B418B419B420B504B505B506B507B508B509B510B511B512B513B514B602B603B604B605B606B607 B608B610B601B701B702 B703S802B874B753B755B757 B758B759 B760EP901B852B856B857B861B864 B865B866B867B871B872B873R1726B330B227B705B706B422C1800B310K707K708K709K710B82 K711B254B41CN512 CN513JT102JT103CN4B162B151B152C831C832B251B431B154B155B252B253B156B90B91B92B94B93B331B95CP952C977C975L960C976B121C819P901B261B70B23B22B165B51B71B163B161B74B73B159B160B167B164B72B59B166B262 B432B211B99D981B134B124K1721B1721IC952L831K721B116B168B96B98B97B85XV-S500BK/XV-S502SL1-5Precautions for ServiceHandling of Traverse Unit and Laser Pickup1. 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 powersupply 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 isprovided at the center of the flexible wire to open the circuit.6. Half-fixed resistors for laser power adjustment are adjusted in pairs at shipment to match the characteristicsof the optical block.Do not change the setting of these half-fixed resistors for laser power adjustment.Destruction 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 of the traverseunit 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 berepaired, ground the sheet 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 thepickup. After completing the repair, remove the solder to open the circuit.Servo controlboardShort circuitPlease refer to “Fig.4“ of “Disassemblymethod“ for details. Short circuitCN101XV-S500BK/XV-S502SL1-6Disassembly methodRemoving the top cover (see Fig.1)Removing the mechanism assembly(see Fig.2,3)Removing the servo control board(see Fig.4)1.Remove the two screws A attaching the top coveron both sides of the body.2.Remove the three screws B attaching the topcover on the back of the body.3.Remove the top cover from the body by liftingthe rear part of the top cover.ATTENTION: Do not break the front panel tabfitted to the top cover.* Prior to performing the following procedure, removethe top cover.* There is no need to remove the front panel assembly.1.Remove the three screws C attaching themechanism assembly on the bottom chassis.2.Remove the two screws F attaching the lug wire andmain board on the bottom chassis.3.The servo control board is removed from theconnector CN512 and CN513 connected with themain board respectively.4.Remove the mechanism assembly by lifting the rearpart of the mechanism assembly.* Prior to performing the following procedure, removethe top cover and mechanism assembly.1.Disconnect the card wire from connector CN201 andCN202 on the servo control board respectively.2.Disconnect the flexible wire from connector CN101on the servo control board from pick-up.At this time, please extract the wire after short-circuitedof two places on the wire in part a with solder. Please remove the solder two places of part a afterconnecting the wire with CN101 when reassembling. 3.Two places in hook b are removed, the servo controlboard is lifted, and it is removed. A x 2BBBFig.1CN513CN512Servo control boardMain boardMechanismassemblyFig.3Hook bHook bServo controlboardFig.4CN101CN202CN201CCJT102,JT103CN4Fig.2Main boardLug wireMechanismassemblyFFXV-S500BK/XV-S502SL1-7Removing the rear panel (see Fig.5)Removing the front panel assembly(see Fig.6,7)Removing the main board (see Fig.7)*Prior to performing the following procedure, removethe top cover.1.Remove the nine screws D attaching the rear panelon the back of the body.* Prior to performing the following procedure, removethe top cover.* There is no need to remove the mechanism assembly.1.Remove the one screw E attaching the front panelassembly on the bottom chassis.2.Disconnect the wire from JT102, JT103 and CN4 onthe main board respectively.3.Hook c and d are removed respectively, and the frontpanel assembly is removed. * Prior to performing the following procedure, removethe top cover, mechanism assembly and rear panel.1.Disconnect the wire from JT102, JT103 and CN4 onthe main board respectively.2.Remove the four screws F attaching the main boardon the bottom chassis.D DDDDRear panelFig.5EHook cHook dHook dFront panelassemblyFig.6Fig.7JT102,JT103CN4Main boardMechanismassemblyFFFFXV-S500BK/XV-S502SL1-8Remove the four screws A attaching the clamper assembly.Move the clamper in the direction of the arrow to release the two joints a on both sides.1.2.Removing the clamper assembly (See Fig.1)Prior to performing the following procedure, remove the clamper assembly.Push