JVC-XVS300BK-cd-sm 电路图 维修手册.pdf

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1、SERVICE MANUAL DVD VIDEO PLAYER No.A0029 Apr. 2002 COPYRIGHT 2002 VICTOR COMPANY OF JAPAN, LTD. XV-S300BK / XV-S302SL XV-S300BK/XV-S302SL This service manual is printed on 100% recycled paper. Contents Safety precautions - 1-2 Preventing static electricity - 1-3 Precautions for service - 1-4 Importa

2、nt for laser products - 1-5 Disassembly method - 1-6 Adjustment method - 1-15 Attention when pick-up is exchanged - 1-19 Comfirm method of operation - 1-20 Troubleshooting - 1-21 Description of major ICs - 1-25 Each difference point XV-S300BK XV-S302SL Black Silver ModelBody color OPEN/CLOSE STANDBY

3、/ON STANDBY DOLBY DVD/SUPER VCD/VCD/CD PLAYER SKIPPAUSEPLAYSTOP D I G I T A L OPEN/ CLOSE STANDBY/ON 123 456 789 100 +10 PLAY MODESUB TITLEAUDIO THEATER POSITION 3D PHONICDIGESTANGLEZOOM PREVIOUS CLEARSELECTSTROBE NEXT RETURN SLOW-SLOW+ CANCEL ENTER RM-SXV001A REMOTE CONTROL D I S P L A Y M E N U T

4、O P M E N U C H O I C E Area Suffix B - U.K. E - Continental europe EN - Northern europe EV - Eastern Europe EE - Russian Federation RadioFans.CN 收音机爱 好者资料库 XV-S300BK/XV-S302SL 1-2 1. This design of this product contains special hardware and many circuits and components specially for safety purposes

5、. 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 circuit

6、ry 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 elec

7、trical 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. Replacem

8、ent 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

9、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 te

10、mperature 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 (El

11、ectrical 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 electric

12、al 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, t

13、o a known good earth 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

14、 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 vol

15、tage 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 leg

16、al 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

17、 for local voltage. 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 pre

18、forming 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 replacin

19、g them, be sure to 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-S300BK/XV-S302SL 1-3 Preventing static electricity Electrostatic discharge (ESD), which occurs when static electricity stored in the body, fabric, et

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

21、rs. Be careful 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 yoursel

22、f 1. Use 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, re

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

24、e 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 repla

25、cing 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 it Conductive ma

26、terial (conductive sheet) or iron plate (caption) Anti-static wrist strap RadioFans.CN 收音机爱 好者资料库 XV-S300BK/XV-S302SL 1-4 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 p

27、recision 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

28、 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

29、 not change the setting of these half-fixed resistors for laser power adjustment. Destruction of Traverse 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 un

30、it 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 the sheet or the plate. 3. After removing the flexible wire from th

31、e 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. Please refer to Fig.4 of Disassembly

32、 method for details. Short circuit CN101 Servo control board Short circuit XV-S300BK/XV-S302SL 1-5 Important for laser products 1.CLASS 1 LASER PRODUCT 2.DANGER : Invisible laser radiation when open and inter lock failed or defeated. Avoid direct exposure to beam. 3.CAUTION : There are no serviceabl

33、e parts inside the Laser Unit. Do not disassemble the Laser Unit. Replace the complete Laser Unit if it malfunctions. 4.CAUTION : The compact disc player uses invisible laser radiation and is equipped with safety switches which prevent emission of radiation when the drawer is open and the safety int

34、erlocks have failed or are de feated. It is dangerous to defeat the safety switches. 5.CAUTION : If safety switches malfunction, the laser is able to function. 6.CAUTION : Use of controls, adjustments or performance of procedures other than those specified herein may result in hazardous radiation ex

35、posure. REPRODUCTION AND POSITION OF LABEL and PRINT WARNING LABEL and PRINT ! Please use enough caution not to see the beam directly or touch it in case of an adjustment or operation check. CLASS 1 LASER PRODUCT CAUTION: Invisible laser radiation when open and interlock failed or defeated. AVOID DI

36、RECT EXPOSURE TO BEAM. (e) ADVARSEL: Usynlig laser- strling ved bning, nr sikkerhedsafbrydere er ude af funktion. Undg udst- telse for strling (d) VARNING: Osynlig laser- strlning nr denna del r ppnad och sprren r urkopplad. Betrakta ej strlen. (s) VARO: Avattaessa ja suo- jalukitus ohitettaessa ole

37、t alttiina nkymttmlle lasersteilylle. l katso steeseen. (f) XV-S300BK/XV-S302SL 1-6 Disassembly method Removing the top cover (see Fig.1) Removing the mechanism assembly (see Fig.2,3) Removing the servo control board (see Fig.4) ATTENTION: Do not break the front panel tab fitted to the top cover. Re

38、move the two screws A attaching the top cover on both sides of the body. Remove the three screws B attaching the top cover on the back of the body. Remove the top cover from the body by lifting the rear part of the top cover. 1. 2. 3. Prior to performing the following procedure, remove the top cover

39、. There is no need to remove the front panel assembly. Remove the three screws C attaching the mechanism assembly on the bottom chassis. Remove the two screws D attaching the lug wire and main board on the main board. The servo control board is removed from the connector CN961 and CN701 connected wi

40、th the main board respectively. Remove the mechanism assembly by lifting the rear part of the mechanism assembly. * * 1. 2. 3. 4. Prior to performing the following procedure, remove the top cover and mechanism assembly. Disconnect the card wire from connector CN201 and CN202 on the servo control boa

41、rd respectively. Disconnect the flexible wire from connector CN101 on the servo control board from pick-up. At this time, please extract the wire after short-circuited of two places on the wire in part a with solder. Please remove the solder two places of part a after connecting the wire with CN101

42、when reassembling. Two places in hook b are removed, the servo control board is lifted, and it is removed. * 1. 2. 3. A x 2 B B B Fig.1 CN701 CN961 Servo control board Main board Mechanism assembly Fig.3 Hook b Hook b Servo control board Fig.4 CN201 CN101 CN202 Part a CCCC C CN702 CN703 Fig.2 Main b

43、oard Lug wireMechanism assembly D D XV-S300BK/XV-S302SL 1-7 Removing 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, remove the top cover. 1.Remove the eight screws E attaching the rear panel

44、 on the back of the body. * Prior to performing the following procedure, remove the top cover. * There is no need to remove the mechanism assembly. 1.Remove the one screw F attaching the front panel assembly on the bottom chassis. 2.Disconnect the wire from CN702 and CN703 on the main board respecti

45、vely. 3.Hook c and d are removed respectively, and the front panel assembly is removed. * Prior to performing the following procedure, remove the top cover, mechanism assembly and rear panel. 1.Disconnect the wire from CN702 and CN703 on the main board respectively. 2.Remove the four screws G attach

46、ing the main board on the bottom chassis. E E Rear panel Fig.5 F Hook c Hook d Hook d Front panel assembly Fig.6 Fig.7 CN702 CN703 Fig.8 G G G G Main board CN702 CN703 Main board Mechanism assembly XV-S300BK/XV-S302SL 1-8 Remove the four screws A attaching the clamper assembly. Move the clamper in t

47、he 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

48、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 a AA AA Fig.1 Fig.2 Fig.3 Push b Tray Clamper base Part c Slide cam XV-S300BK/XV-S302SL 1-9 Prior to performing the following procedure, remove the clamper assembly and the tray. Remove the four screws B attaching the traverse mechanism assembly.