Jvc-XVS-30-BK-Service-Manual电路原理图.pdf

SERVICE MANUALDVD VIDEO PLAYERNo.A0003Feb. 2001COPYRIGHT 2001 VICTOR COMPANY OF JAPAN, LTD.Printed in Japan200102(S)XV-S40BK / XV-S42SLXV-S45GD / XV-S30BKNo.A0003XV-S40BK/XV-S42SLXV-S45GD/XV-S30BKXV-S40BK/XV-S42SLXV-S45GD/XV-S30BKArea Suffix(XV-S40BK/XV-S30BK)J - U.S.A.C - CanadaArea Suffix (XV-S42SL)C - CanadaArea Suffix (XV-S45GD)J - U.S.A.This service manual is printed on 100% recycled paper.VICTOR COMPANY OF JAPAN, LIMITEDOPTICAL DISC BUSINESS DIV. PERSONAL 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 XV-S40BK/XV-S42SL/XV-S45GD/XV-S30BK1-5Precautions 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 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 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 characteristics of 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 whichthe traverse unit or the pick up is to be repaired, ground the sheetor 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 providedat the center of the flexible wire for the pickup.After completing the repair, remove the solder to open the circuit.Servo controlboardShort circuitPlease refer to “Fig.4“ of “Disassemblymethod“ for details. XV-S40BK/XV-S42SL/XV-S45GD/XV-S30BK1-6Disassembly 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 top coveron the back of the body.3.Remove the top cover from the body by lifting therear 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 the mechanismassembly on the bottom chassis.2.The servo control board is removed from the connectorCN961 and CN701 connected with the main boardrespectively.3.Remove the mechanism assembly by lifting the rear partof 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.ATTENTIONAt 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 control boardis lifted, and it is removed. *Please remove lug wire when you do not removethe mechanism assembly easily. A x 2BBBFig.1CCCCN703CN702Fig.2CN701 CN961Servo controlboardMain boardMechanismassemblyFig.3Hook b Hook bServo controlboardFig.4Lug wireXV-S40BK/XV-S42SL/XV-S45GD/XV-S30BK1-7Removing the rear panel (see Fig.5)Removing the front panel assembly(see Fig.6,7)Removing the main board (see Fig.8)*Prior to performing the following procedure, removethe top cover.1.Remove the six 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 CN702 and CN703 on themain 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 CN702 and CN703 on themain board respectively.2.Remove the four screws F attaching the main boardon the bottom chassis.DDDRear panelFig.5EHook cHook dHook dFront panelassemblyFig.6CN703CN702Fig.7CN703CN702Fig.8FFFFXV-S40BK/XV-S42SL/XV-S45GD/XV-S30BK1-8Remove 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 b of the slide cam into the slot on the left side of the loading base until it stops.Draw out the tray toward the front.1.2.Removing the tray (See Fig.2 and 3)When reattaching, fit the clamper to the two joints a.ATTENTION: Before reattaching the tray, slide the part c of the slide cam to the right as shown in Fig.3.ATTENTION: Joint aJoint aAAA AFig.1Fig.2Fig.3PushbTrayClamper basePart cSlide camXV-S40BK/XV-S42SL/XV-S45GD/XV-S30BK1-9Prior to performing the following procedure, remove the clamper assembly and the tray.Remove the four screws B attaching the traverse mechanism assembly.1.Removing the traverse mechanism assembly (See Fig.4 and 5)Before reattaching the traverse mechanism assembly, pass the card wire extending from the spindle motor board through the notch d of the elevator.ATTENTION: Prior to performing the following procedure, remove the clamper assembly, the tray and the traverse mechanism assembly.Extend each bar e inside of the loading base outward and detach the elevator shaft.1.Removing the elevator (See Fig.6 and 7)When reattaching, first fit the two shafts on the front of the elevator to the slots f of the slide cam.ATTENTION: Fig.4Fig.5Fig.6Fig.7BBBBTraverse mechanism assemblyBBTraverse mechanism assemblyElevatorNotch dElevatorElevatorElevatoreeLoading baseElevatorShaftsSlide camSlots fXV-S40BK/XV-S42SL/XV-S45GD/XV-S30BK1-10Prior to performing the following procedure, remove the clamper assembly, the tray, the traverse mechanism assembly and the elevator.Remove the belt from the pulley.Remove the screw C attaching the motor assembly.Turn over the body and remove the screw D attaching the motor assembly.Release the two tabs g retaining the motor board.1.2.3.4.Removing the motor assembly (See Fig.8 and 9)Fig.8Fig.9CMotor assemblyBeltLoading baseMotor assemblyDTabs g