JVC-XDV9000-cd-sm 电路图 维修手册.pdf

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1、SERVICE MANUAL DVD AUDIO/VIDEO PLAYER No.A0004 Mar. 2001 COPYRIGHT 2001 VICTOR COMPANY OF JAPAN, LTD. XV-D9000 XV-D9000 Area Suffix J - U.S.A. This service manual is printed on 100% recycled paper. Contents Safety precautions - 1-2 Preventing static electricity - 1-3 Dismantling and assembling the t

2、raverse unit - 1-4 Important for laser products - 1-5 Importance admistering point on the safety - 1-6 Disassembly method - 1-7 Method of initializing EEPROM and display of jitter value - 1-18 Description of major ICs - 1-19 RadioFans.CN 收音机爱 好者资料库 XV-D9000 1-2 1. This design of this product contain

3、s 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

4、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 warranty and will further relieve the manufacture of responsibility for p

5、ersonal 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 repl

6、acement 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

7、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, tubi

8、ngs, 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 r

9、eturned 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.) t

10、o 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 , partic

11、ularly 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 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

12、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 met

13、al 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 1. This equipment has been designed and manufactured to me

14、et 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. I

15、f mains voltage selector is provided, check setting 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. Theref

16、ore, pay attention to such burrs in the case of preforming repair of this system. RadioFans.CN 收音机爱 好者资料库 XV-D9000 1-3 Preventing static electricity Electrostatic discharge (ESD), which occurs when static electricity stored in the body, fabric, etc. is discharged, can destroy the laser diode in the

17、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 careful to use proper grounding in the area wh

18、ere 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 an anti-static wrist strap to release any st

19、atic 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 shorted parts to their original condition. (

20、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 traverse unit (optical pickup) to strong shocks, as

21、 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 lo

22、ng 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 (conductive sheet) or iron plate (caption) Ant

23、i-static wrist strap RadioFans.CN 收音机爱 好者资料库 XV-D9000 1-4 Short circuit land Laser pick-up unit Flexible cable Shot with the clip Shorting Dismantling and assembling the traverse unit 1. Notice regarding replacement of optical pickup Electrostatic discharge (ESD), which occurs when static electricit

24、y 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 to the optical pickup or connected devices. (Refer to the section regarding anti-static measures.) 1. Do not touch the area around th

25、e laser diode and actuator. 2. Do not check the laser diode using a tester, as the diode may easily be destroyed. 3. It is recommended that you use a grounded soldering iron when shorting or removing the laser diode. Recommended soldering iron: HAKKO ESD-compatible product 4. Solder the land on the

26、optical pickups flexible cable. Note : Short the land after shorting the terminal on the flexible cable using a clip, etc., when using an ungrounded soldering iron. Note : After shorting the laser diode according to the procedure above, remove the solder according to the text explanation. XV-D9000 1

27、-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 serviceable parts inside the Laser Unit. Do not disassemble the Laser Unit. Replace the complete Laser Uni

28、t 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 interlocks have failed or are de feated. It is dangerous to defeat the safety switches. 5.CAUTION :

29、 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 exposure. REPRODUCTION AND POSITION OF LABELS WARNING LABEL ! Please use enough caution not to see

30、 the beam directly or touch it in case of an adjustment or operation check. XV-D9000 1-6 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 FIRE, REPLACE ONLY WITH SAME TYPE AND

31、RATING OF FUSES ; F9991 : 1.6 A / 250 V F9991 : 1.6 A / 250 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 graphique (Ce symbole signifie fusible d

32、e type a fusion rapide.) doit etre interprete comme suit ; Importance Admistering point on the Safety XV-D9000 1-7 C Disassembly method Removing the top panel(See Fig.1) 1.Remove the eight screws A by hexagonal driver attaching the top panel. 2.A top panel is lifted up and it is removed. Removing th

33、e side panel(See Fig.1) 1.Remove the four screws B by hexagonal driver attaching the side panel. 2.The left side also similarly removes the side panel. Removing the front panel assembly (See Fig.15) *Prior to performing the following procedure, remove the top panel. 1.The bottom of the main body is

34、done up. 2.A minus driver is inserted in the incision part at the center of the bottom, the bar in the interior of the incision part is moved in the direction of the arrow of Figure 2, and the tray is drawn out forward. 3.Hook a which connects the tray covers to the tray is removed by a minus driver

35、 etc. , the tray cover is pushed downward, and removes. 4.Remove the six screws C attaching the front panel assembly. 5.The top of the main body is done up. 6.Remove the eight screws D attaching the front panel assembly from the upper side of main body. 7.Disconnect the wire from connector CN507 on

36、the main board and CN981 on the power supply board. 8.It comes off when the front panel assembly is drawn out forward. A A B B Top panel Side panel Fig.1 Fig.4 Incision part Tray Front panel assembly Fig.2 Bottom plate Bottom plate Fig.3 Hook a Tray cover Front panel assemblyD CN507 CN981 Fig.5 Powe

37、r supply board Main board XV-D9000 1-8 Removing the rear cover(See Fig.68) *Prior to performing the following procedure, remove the top panel. 1.Remove the eighteen screws E attaching the rear cover from back of the main body. 2.Remove the three screws F attaching the bottom plate from back of the m

38、ain body. 3.Solder on the power supply board is removed by three places.(See Fig.8) 4.Remove the two screws G attaching the AC socket and one screw G attaching the power supply board. Removing the main board(See Fig.8) *Prior to performing the following procedure, remove the top panel. 1.Remove the

39、four screws H attaching the main board. 2.Disconnect the connector from CN101,CN103 CN504,CN505,CN501,CN502,CN503,CN506 CN507 on the main board. E E E E E E G G Rear cover Fig.6 F Bottom plate Fig.7 H CN103 CN101 CN504 CN505 CN501CN507 CN509 CN503 CN502 CN506 Main board Fig.8 Solder parts Rear cover

40、 XV-D9000 1-9 I I J K DVD Mechanism assembly cover Fig.9 Fig.10 Fig.11 DVD Mechanism assembly Removing the DVD mechanism assembly (See Fig.911) *Prior to performing the following procedure, remove the top panel and main board. 1.Remove the four screws I attaching the DVD mechanism assembly cover, an

41、d DVD mechanism assembly cover lifted up and it is removed. 2.The bottom of the main body is done up. 3.Remove the four nut J attaching the DVD mechanism assembly 4.The top of the main body is done up. 5.Remove the four screws K attaching the DVD mechanism assembly. 6.It is removed while lifting the

42、 DVD mechanism assembly backward while noting the card wire. XV-D9000 1-10 L CN722 CN741 CN751 CN761CN697 CN721 CN696 CN695 M N O Audio-analog (rear L/R)board Audio-analog (front L/R)board Fig.12 Fig.13 Fig.14 Signal processing board Removing the audio(rear L/R) board (See Fig.1213) *Prior to perfor

43、ming the following procedure, remove the top panel and rear cover. 1.Remove the three screws L attaching the audio(rear L/R) board. 2.Remove the four screws M attaching the audio(rear L/R) board from back of the body. 3.Disconnect the card wire from CN761 and connector from CN751 on the audio(rear L

44、/R) board. 4.Disconnect the connector from CN697 on the audio power board. Removing the audio(front L/R) board (See Fig.14) *Prior to performing the following procedure, remove the top panel and rear cover. 1.Remove the audio(rear L/R) board(upper step). 2.Remove the two screws N of the pillar which

45、 supports audio(rear L/R) board(upper step). 3.Remove the two screws O attaching the audio(front L/R)board(lower step). 4.Disconnect the connector from CN721 and CN722 on the audio signal(front) output terminal. 5.Disconnect the connector from CN695 and CN696 on the DVD audio power board. 6.Disconne

46、ct the connector from CN741 on the signal processing board. XV-D9000 1-11 P Q S CN503 CN601 CN502 CN506 CN501 CN991 U U T Fig.15 Fig.16 Fig.17 Fig.18 Video signal board Rear cover Power supply board cover Power supply board Removing the video signal board(See Fig.15,16) *Prior to performing the foll

47、owing procedure, remove the top panel and rear cover. 1.Remove the three screws P attaching the video signal board. 2.Remove the five screws Q attaching the video signal board from back of the body. 3.Disconnect the connector from CN502 and CN503 on the main board. 4.Disconnect the connector from CN

48、601 on the video signal board. Removing the power supply board (See Fig.17,18) *Prior to performing the following procedure, remove the top panel, rear cover and video signal board. 1.Remove the two screws S attaching the power supply board cover and it is remove. 2.Remove the two screws T of the pillar which supports power supply board cover. 3.Remove the four screws U attaching the power supply board. 4.Disconnect the connector from CN991 on the power supply board.