JVC-XVFA95GD-cd-sm 电路图 维修手册.pdf

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1、SERVICE MANUAL DVD AUDIO/VIDEO PLAYER No.A0021 Oct. 2001 COPYRIGHT 2001 VICTOR COMPANY OF JAPAN, LTD. XV-FA90BK / XV-FA92SL XV-FA95GD XV-FA90BK/XV-FA92SL XV-FA95GD Area Suffix (XV-FA90BK) J - U.S.A. C - Canada Area Suffix (XV-FA92SL) C - Canada Area Suffix (XV-FA95GD) J - U.S.A. This service manual

2、is printed on 100% recycled paper. Model XV-FA90BK XV-FA92SL XV-FA95GD Body color Black Silver Gold Each difference point Please pull out the AC plug code after the standby indicator lights pushing the power supply button without fail after completing the repair. The mechanism becomes initialed posi

3、tion. There is a possibility to break when carrying in not initialed position the mechanism but the state. Contents Safety precautions - 1-2 Preventing static electricity - 1-3 Importance admistering point on the safety - 1-4 Precautions for service - 1-5 Disassembly method - 1-6 Adjustment method -

4、 1-24 Troubleshooting - 1-28 Description of major ICs - 1-32 Glossary of term and abbreviations - 1-53 RadioFans.CN 收音机爱 好者资料库 XV-FA90BK/XV-FA92SL/XV-FA95GD 1-2 1. This design of this product contains special hardware and many circuits and components specially for safety purposes. For continued prot

5、ection, 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 sh

6、ould 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 mechanica

7、l 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

8、 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

9、 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, mov

10、ing 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 re-assembling. 5. Leakage current check (Electrical shock haza

11、rd testing) After re-assembling 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 u

12、se 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 ear

13、th ground. Any leakage current must not exceed 0.5mA AC (r.m.s.). Alternate check method Plug 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 capacit

14、or 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 re

15、sistor. 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

16、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

17、. Good earth ground Place this probe on each exposed metal part. AC VOLTMETER (Having 1000 ohms/volts, or more sensitivity) 1500 10W 0.15 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

18、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

19、 use the parts of the same type and rating as specified by the manufacturer. (Except the J and C version) RadioFans.CN 收音机爱 好者资料库 XV-FA90BK/XV-FA92SL/XV-FA95GD 1-3 Preventing static electricity Electrostatic discharge (ESD), which occurs when static electricity stored in the body, fabric, etc. is di

20、scharged, 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 electricity Static electricity in the work area can destroy the optical pickup (laser diode) in devices such as DVD players. Be c

21、areful to use proper grounding in the area where repairs are being performed. 1.1.1. Ground the workbench 1. 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 yourself 1. Use

22、 an anti-static wrist strap to release any static electricity built up in your body. 1.1.3. Handling the optical pickup 1. 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

23、 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 testers internal power source can easily destroy the laser diode. 1.2. Handling the traverse unit (optical pickup) 1. Do not subject the traver

24、se 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

25、 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 it Conductive material (

26、conductive sheet) or iron plate (caption) Anti-static wrist strap RadioFans.CN 收音机爱 好者资料库 XV-FA90BK/XV-FA92SL/XV-FA95GD 1-4 Full Fuse Replacement Marking Graphic symbol mark (This symbol means fast blow type fuse.) should be read as follows ; FUSE CAUTION FOR CONTINUED PROTECTION AGAINST RISK OF FIR

27、E, REPLACE ONLY WITH SAME TYPE AND RATING OF FUSES ; F901 : 1.6 A / 125 VF901 : 1.6 A / 125 V Marquage Pour Le Remplacement Complet De Fusible PRECAUTIONS SUR LES FUSIBLES POUR UNE PROTECTION CONTINUE CONTRE DES RISQUES DINCENDIE, REMPLACER SEULEMENT PAR UN FUSIBLE DU MEME TYPE ; Le symbole graphiqu

28、e (Ce symbole signifie fusible de type a fusion rapide.) doit etre interprete comme suit ; Importance Admistering point on the Safety F901 C902C903 C905C906 C907 C908 C909 C910 C913 C914 C915 C917 C918 C919 C951 C960 C961 C962 C963 C964 C965 C966 C967 C968 C969 C970 C971 C972 C973 C978 C979 C981 C98

29、2 C984 C987 C989 C992 C993 C994 C995 C996 C997 CN951 CN952 CP951 D901 D902 D903 D904 D908 D910 D911 B104 B106 D950 D951 D952 D953 D954 D956 D957 D958 D960 D972 D973 D974 D991 FC901FC902 IC901 IC951 IC952 J901 K902 L901 L951 L952 L955 L957 L959 PC901 PC902 Q951 Q952 Q953 Q991 R900 R901 R902 R903 R904

30、 R905 R906 R907 R908 R910 R911 R952 R953 R955 R956 R960 R961 R963 R965 R969 R973 R974 R975 R976 T901 HS901 HS952 B701 B320 B101 B102 B301 B303 B302 B501 B801 B201 B803 B804 B305 B304 B802 B306 B307 B308 B309 B503 B311 B504 B310 B502 B205 B314 B202 B313 B203 B312 B316 B103 B341 B204 XV-FA90BK/XV-FA92

31、SL/XV-FA95GD 1-5 Precautions for Service Handling 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 t

32、he 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

33、 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

34、 Unit and Laser Pickup by Static Electricity Laser diodes are easily destroyed by static electricity charged on clothing or the human body. Before repairing peripheral elements of the traverse unit or pickup, be sure to take the following electrostatic protection: 1. Wear an antistatic wrist wrap. 2

35、. 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 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

36、by soldering the land which is provided at the two places of the flexible board for the pickup. After completing the repair, remove at the two places of the solder to open the circuit. Pickup unit Flexible board Land (Soldering two places) Traverse mechanism unit Flexible wire Metal clip XV-FA90BK/X

37、V-FA92SL/XV-FA95GD 1-6 Remove the four screws A on each side of the body. Remove the two screws B on the back of the body. Lift the rear part of the top cover and remove in the direction of the arrow while pulling both sides of the top cover outward. 1. 2. 3. Disassembly method Removing the top cove

38、r (See Fig.1) Prior to performing the following procedure, remove the top cover. Disconnect the card wire from connector CN801 and CN803 on the servo control board, and CN951 on the power board respectively. Remove the three screws C on the upper side of the body. Remove the three screws D on the bo

39、ttom of the body. Remove the front panel assembly toward the front. 1. 2. 3. Removing the front panel assembly (See Fig.2 and 3) (Bottom) Top cover B Fig.1 A 2 A 2 Servo control board CN801 Front panel assembly C Power board CN951 CN803 D Front panel assembly Fig.2 Fig.3 XV-FA90BK/XV-FA92SL/XV-FA95G

40、D 1-7 Prior to performing the following procedure, remove the top cover and the front panel assembly. Turn over the body and insert a screwdriver into the slot of the bottom chassis, then move it in the direction of the arrow in Fig.4. The main tray assembly will move forward. Draw the main tray ass

41、embly toward the front manually. Bring up the joint a over the boss of the loading base assembly, and remove the main tray assembly toward the front. Disconnect the card wire, on the back of the main tray assembly, from connector CN841 on the relay board 1. 1. 2. 3. 4. Removing the main tray assembl

42、y (See Fig.4 to 7) Main tray assembly Fig.4 Fig.5 Fig.6Fig.7 Bottom chassis (slot) Bottom chassis Main tray assembly Main tray assembly Loading base assembly Relay board 1 CN841 Joint a Card wire Joint a Loading base assembly Boss Relay board 1 XV-FA90BK/XV-FA92SL/XV-FA95GD 1-8 Turn over the main tr

43、ay assembly and pass the card wire extending from the photo sensor board through the notch b, in advance (Fig.8). From above the loading base assembly, turn the load base counterclockwise until the slide gear stops at the back end (Bring down the traverse mechanism assembly). Reattach the main tray

44、assembly to the loading base assembly while fitting to the groove on the right and left sides of the loading base assembly. Connect the card wire through the notch b to connector CN841 on the relay board 1. Reattach the main tray assembly while fitting the slot c to the shaft. 1. 2. 3. 4. 5. Reattac

45、hing the main tray assembly (See Fig.8 to 10) Main tray assembly Fig.8 Fig.9 Fig.10 Loading base assembly Relay board 1 CN841 Photo sensor board Notch b Slide gear Slot c Joint a Boss Shaft Load base Prior to performing the following procedure, remove the top cover, the front panel assembly and the

46、main tray assembly. Disconnect the wire from connector CN808, CN809 and the card wire from CN210 on the servo control board respectively. Remove the seven screws E attaching the loading base assembly. 1. 2. Removing the loading base assembly (See Fig.11) Loading base assembly E E E E Servo control b

47、oard CN210 CN808 CN809 E Fig.11 XV-FA90BK/XV-FA92SL/XV-FA95GD 1-9 Pull out the relay board 2 on the upper side of the body. Disconnect the wire from connector CN807, CN810 and CN901 on the servo control board respectively. Remove the screw I attaching the lug wire. Remove the three screws H attachin

48、g the servo control board. 1. 2. 3. 4. Servo control board Prior to performing the following procedure, remove the top cover. Remove the fourteen screws F attaching the rear panel. 1. Removing the rear panel (See Fig.12) Prior to performing the following procedure, remove the top cover, the front pa

49、nel assembly, the main tray assembly, rear panel and the loading base assembly. Removing each board (See Fig.13,14) Pull out the surround audio terminal board from connector CN763. Remove the screw G attaching the surround audio board. Pull out the surround audio board from connector CN754 and CN603. 1. 2. 3. Surround