JVC-VSDT2000-cs-sm 电路图 维修手册.pdf

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1、VS-DT2000 No.21082 May. 2002 COPYRIGHT 2002 VICTOR COMPANY OF JAPAN, LTD. SERVICE MANUAL VS-DT2000 Contents Safety precautions Preventing static electricity Important for laser products Importance administering point on the safety Disassembly method 1-2 1-3 1-4 1-5 1-7 1-20 1-21 1-22 1-22 1-23 35 Fl

2、ow of functional operation until TOC read Error code Maintenance of laser pickup Replacement of laser pickup Description of major ICs Area suffix J - U.S.A. C - Canada CA-VSDT2000RSP-VSDT2000SP-VSDT2000SP-PW2000 RM-SVSDT2000J REMOTE CONTROL STANDBY/ON PLAY MODE REPEAT FM MODE TREBLEBASS SET CANCEL S

3、LEEPDIMMERDISPLAYFM/AM COLOR CLOCK /TIMER OPEN/ CLOSE VOLUME MD/AUX 123 6 9 1010 7 45 8 + COMPACT COMPONENT SYSTEM COMPACT COMPONENT SYSTEM RadioFans.CN 收音机爱 好者资料库 VS-DT2000 1-2 1. This design of this product contains special hardware and many circuits and components specially for safety purposes. F

4、or 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

5、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 electri

6、cal 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

7、 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 hav

8、e 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 tempe

9、rature 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 re-assembling. 5. Leakage currnet check (Elec

10、trical shock hazard 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 electrica

11、l 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

12、 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

13、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 meausre the AC volt

14、age 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 lega

15、l 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

16、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 pref

17、orming 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. (This regulati

18、on does not correspond to J and C version.) RadioFans.CN 收音机爱 好者资料库 VS-DT2000 1-3 Conductive material (conductive sheet) or iron plate (caption) Anti-static wrist strap Short land CN601 CD servo board Flexible wire 5. Attention when traverse unit is decomposed *Please refer to Disassembly method in

19、the text for the CD pickup unit. Apply solder to the short land before the flexible wire is disconnected from the connector on the CD pickup unit. (If the flexible wire is disconnected without applying solder, the CD pickup may be destroyed by static electricity.) In the assembly, be sure to remove

20、solder from the short land after connecting the flexible wire. Electrostatic 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. Pre

21、venting static electricity 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 CD players. Be careful to use proper grounding in the area where repairs are being performed. 2. About the earth process

22、ing for the destruction prevention by static electricity 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. 2-1 Ground the workbench 2-2 Ground yourself Use an anti-static wrist strap to re

23、lease any static electricity built up in your body. 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.) Do not

24、 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. 3. Handling the optical pickup 1. 2. Do not subject the traverse unit (optical pickup) to strong shocks, as it is a sensitive, complex unit. Remove sol

25、der of the short land on the flexible wire 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. Handle the flex

26、ible wire carefully as it may break when subjected to strong force. It is not possible to adjust the semi-fixed resistor that adjusts the laser power. Do not turn it. 4. Handling the traverse unit (optical pickup) 1. 2. 3. 4. RadioFans.CN 收音机爱 好者资料库 VS-DT2000 1-4 Important for laser products 1.CLASS

27、 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 Unit if it malfunctions. 4.CAUTION : The c

28、ompact disc player uses invisible laserradiation and is equipped with safety switches whichprevent 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 : If safety switches malfunction, the lase

29、r 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. VARNING : Osynlig laserstrlning r denna del r ppnad och sprren r urkopplad. Betrakta ej strlen. VARO : Avattaessa ja suojalukitus

30、 ohitettaessa olet alttiina nkymttmlle lasersteilylle.l katso steeseen. ADVARSEL : Usynlig laserstrling ved bning , nr sikkerhedsafbrydere er ude af funktion. Undg udsttelse for strling. ADVARSEL : Usynlig laserstrling ved pning,nr sikkerhetsbryteren er avslott. unng utsettelse for strling. !CAUTION

31、 Please use enough caution not to see the beam directly or touch it in case of an adjustment or operation check. VS-DT2000 1-5 Caution: For continued protection against risk of fire, replace only with same type 1A/125V for F1901, 8A/125V for F1902, 3.15A/125V for F1903. This symbolspecifies type of

32、fast operating fuse. Precaution: Pour eviter risques de feux, remplacez le fusible de surete de F1901 comme le meme type que 1A/125V, F1902 comme le meme type que 8A/125, et 3.15A/125V pour F1903. Ce sont des fusibles suretes qui functionnes rapide. Importance administering point on the safety Main

33、board Power amplifier board F1901 F1902 F1903 VS-DT2000 1-6 Caution: For continued protection against risk of fire, replace only with same type 2A/125V for F2901, 1.6A/125V for F2911, 1.6A/125V for F2921. This symbolspecifies type of fast operating fuse. Precaution: Pour eviter risques de feux, remp

34、lacez le fusible de surete de F2901 comme le meme type que 2A/125V, F2911 comme le meme type que 1.6A/125, et 1.6A/125V pour F2921. Ce sont des fusibles suretes qui functionnes rapide. F2901 Switch board Power supply board F2911 F2921 VS-DT2000 1-7 Fig.1 Fig.2 Fig.3 Fig.4 A B C A Top lens Top panel

35、Bottom panel Bottom panel bb Top panel a Front panel assembly Disassembly method Removing the top lens (See Fig. 1.) From the top side of the main body, remove the four screws A attaching the top lens. Removing the bottom panel (See Figs. 2 and 3.) 1. 2. 3. From the rear side of the main body, remov

36、e the three screws B attaching the bottom panel. From the bottom side of the main body, remove the two screws C attaching the bottom panel. Remove the bottom panel in an upward direction. 1. 2. Slide the top panel toward the rear (direction of the arrow), disengage it from the engagement sections a

37、of the front panel assembly and engagement sections b of the bottom chassis. Remove the top panel in an upward direction. Removing the top panel (See Fig. 4.) Remove the top lens. Remove the bottom panel. VS-DT2000 1-8 Fig.5 Fig.6 Fig.7 CD mechanism assembly CN801 LED board Push button D D G F D Cla

38、w c Claws d CN171 CN182 Wire holder Bottom chassis Front panel assembly Claws d Main board Tie band CN183 CN106 Hole on the bottom chassis Front panel assembly E Reference Before attaching the front panel assembly, pass the card wire of the front panel assembly through the hole on the bottom chassis

39、. After attaching the front panel assembly, bundling the card wire and wires of the front panel assembly using a wire holder and tie band. Removing the CD mechanism assembly (See Fig. 5.) 1. 2. 3. 4. From the top side of the main body, disengage the claw c of the CD mechanism assembly and then remov

40、e the push button. Remove the five screws D, screw E and screw F attaching the CD mechanism assembly. Disconnect the wire from connector CN801 on the LED board. Remove the CD mechanism assembly in an upward direction. Removing the front panel assembly (See Figs. 6 and 7.) 1. 2. 3. 4. 5. 6. Remove th

41、e tie band bundling the wires of the front panel assembly. Disconnect the wires from connectors CN106 and CN182 on the main board. Disconnect the card wires from connectors CN171 and CN183 on the main board. Remove the wire holder holding the card wire of the front panel assembly. From the front sid

42、e of the main body, remove the two screws G attaching the front panel assembly. Disengage the claws d of the front panel assembly from the bottom chassis and then remove the front panel assembly in the direction of arrow. Remove the top lens. Remove the bottom panel. Remove the top panel. Remove the

43、 top lens. Remove the bottom panel. Remove the top panel. Remove the CD mechanism assembly. VS-DT2000 1-9 Fig.8 Fig.9 CN101 CN111 Tie band Tie band CN102 Speaker board Tuner board Rear panel AM antenna terminal FM antenna terminal JH H Speaker terminalDigital out terminal CD mechanism assembly wire

44、Notch Bottom chassis Main board Removing the tuner board (See Figs. 8 and 9.) 1. 2. 3. Disconnect the card wire from connector CN111 on the main board. From the rear side of the main body, remove the two screws H attaching the FM/AM antenna terminals on the tuner board. Take out the tuner board from

45、 the bottom chassis. Removing the speaker board (See Figs. 8 and 9.) 1. 2. 3. 4. Remove the tie bands bundling the wires on the speaker board. Disconnect the wires from connectors CN101 and CN102 on the speaker board. From the rear side of the main body, remove the three screws J attaching the speak

46、er/digital out terminals on the speaker board. Take out the speaker board from the bottom chassis. Remove the top lens. Remove the bottom panel. Remove the top panel. Remove the CD mechanism assembly. Remove the top lens. Remove the bottom panel. Remove the top panel. Remove the CD mechanism assembl

47、y. Reference After connecting the wires to the speaker board, bundle them using a tie band. Insert the CD mechanism assembly wire into the notch on the bottom chassis. (See Fig. 8.) VS-DT2000 1-10 Fig.10 Fig.11 Fig.12 Wire clamp Wire holder Earth wire Main board CN191 CN194 CN192 CN181 Power amplifi

48、er board L M LK Main board Q Power amplifier board Heat sink Fan motor CN192 CN193 Hook e Hook e Rear panel N Q P P Power transformer L Bottom chassis Reference Attaching the main board When attaching the screw L, attach the earth wire of the main board at the same time. When attaching the screw K,

49、also attach the wire holder together with it. After connecting the wires to the connectors CN192 and CN193 on the power amplifier board, bundle them using wire holder. Reference It is not necessary to remove the wire from the fan motor. Removing the main board (See Figs. 10 and 11.) 1. 2. 3. 4. 5. 6. 7.