JVC-UXV30-cs-sm 电路图 维修手册.pdf

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1、1-1 UX-V30 SERVICE MANUAL MICRO COMPONENT SYSTEM No.20888 Dec. 2000 COPYRIGHT 2000 VICTOR COMPANY OF JAPAN, LTD. UX-V30 UX-V30 Contents Safety precautions Important for laser products Disassembly method Main adjustment Flow of functional operation until TOC read Maintenance of laser pickup Replaceme

2、nt of laser pickup Description of major ICs 1-2 1-3 1-4 1-14 1-18 1-19 1-19 1-20 Area Suffix This service manual is printed on 100% recycled paper. UFChina AUTO REVERSE AUTO TA PE SELECTO R T APE DOWNUPMULTI CONTROL TAPEFM/AMCD STANDBY/ON PHONES MD/ AUX REC REV. MODE AHB PRO TIMER CLOCK VERTICAL DIS

3、C LOADING MECHANISM COMPACT DIGITAL AUDIO VOLUME CD OPEN/CLOSE REMOTE CONTROL RM-RXUV5R DIMMERSLEEP DISPLAYFM MODEMD/AUX AHB PRO AUTO PRESETCD PROGRAM RANDOMREPEAT BASSTREBLECANCEL UP SET DOWN TUNER BAND TAPE VOLUME CD MICRO COMPONENT SYSTEM UX-V30 RadioFans.CN 收音机爱 好者资料库 1-2 UX-V30 Safety Precautio

4、ns 1. This design of this product contains 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 i

5、n the original circuits. Services should 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 manufacturers warranty and will

6、further relieve the manufacture of responsibility for personal 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

7、 afforded by them necessarily be obtained by using replacement 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

8、 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 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

9、products are routed and dressed with ties, clamps, tubings, 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 obs

10、erved, and it should be confirmed that they have been returned to normal, after re-assembling. 5. Leakage currnet check (Electrical 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 cabi

11、net, screw heads, headphone jack, control shafts, etc.) to 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 curr

12、ent from each exposed metal parts of the cabinet , particularly 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 voltmete

13、r 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 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

14、 to eachexposed metal part, particularly any exposed metal part having a return path to the chassis, and meausre 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 mA

15、 AC (r.m.s.). Warning 1. This equipment has been designed and manufactured to meet 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 i

16、s essential that safety critical components are replaced by approved parts. 5. If 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 !CA

17、UTION 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 this system. RadioFans.CN 收音机爱 好者资料库 1-3 UX-V30 Important for laser products 1.CLASS 1 LASER PRODUCT 2.DANGER : Invisible laser radiation when o

18、pen 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 compact disc player uses invisible laserradiation and is equi

19、pped 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 laser is able to function. 6.CAUTION : Use of controls, adjustme

20、nts 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 ohitettaessa olet alttiina nkymttmlle lasersteilylle.l kats

21、o 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. REPRODUCTION AND POSITION OF LABELS WARNING LABEL !CAUTION Please us

22、e enough caution not to see the beam directly or touch it in case of an adjustment or operation check. RadioFans.CN 收音机爱 好者资料库 1-4 UX-V30 Remove the eight screws A attaching the rear cover on the back of the body. Remove the two screws B attaching the rear cover on the bottom of the body. Unlock the

23、 speaker terminal and the antenna terminal, then remove the rear cover backward with releasing the hooks. 1. 2. 3. Disassembly method Removing the rear cover (See Fig.1 and 2) Prior to performing the following procedure, remove the rear cover. Move the side panels in the direction of the arrow and r

24、emove them backward. 1. Removing the side panels (See Fig.3 and 4) Fig.1 Fig.2 Fig.3Fig.4 Rear cover A A A A A Rear cover B B Side panel (L)Side panel (R) 1-5 UX-V30 Prior to performing the following procedure, remove the rear cover and the side panels. Disconnect the card wires from connector CN304

25、 and CN305 on the main board on the left side of the body. Disconnect the harness from connector CN309 on the Opt, Dig.out board on the right side of the body. Cut off the band fixing the harness. Remove the two screws C attaching the cassette mechanism assembly on both sides of the body and release

26、 the two joints a. Remove the cassette mechanism assembly in the direction of the arrow. 1. 2. 3. 4. Removing the cassette mechanism assembly (See Fig.5 and 6) Prior to performing the following procedure, remove the rear cover, the side panels and the cassette mechanism assembly. Disconnect the card

27、 wire from connector CN303 and the harness from CN306 and CN307 on the main board respectively. Disconnect the harness from connector CN902 on the power transformer. Remove the screw E attaching the main board on the right side of the body. Remove the screw F and the two screws G attaching the heat

28、sink on the back of the body. 1. 2. 3. 4. Disconnect connector CN301 and CN302 on the main board from the main body. Remove the main board upward by releasing the two joints b in the lower part of the main board. 5. Removing the main board / the heat sink (See Fig.7 to 9) The heat sink can be remove

29、d even if the main board is attached to the body. ATTENTION: Fig.5 Fig.6 Fig.7 Fig.8 C C CN304 CN305 Joint a Main board Cassette mechanism assembly Cassette mechanism assembly CN309 Opt, Dig.out board Band Joint a CN303 CN307 CN306 Transformer board CN902 Main board Heat sink Joint b Main board CN30

30、2CN301 Joint b E 1-6 UX-V30 Prior to performing the following procedure, remove the rear cover, the side panels, the cassette mechanism assembly and the main board. Disconnect the card wire from connector CN732 on the LCD board. Remove the two screws D attaching the front panel assembly on the botto

31、m of the body. Release the two joints c on the lower right and left sides of the body. Pull out the front panel assembly toward the front. 1. 2. 3. Removing the front panel assembly (See Fig.10 to 12) Prior to performing the following procedure, remove the rear cover, the side panels, the cassette m

32、echanism assembly, the main board and the front panel assembly. Remove the plastic rivet attaching the head phone board and release the joint d. 1. Removing the head phone board (See Fig.13) Fig.9 Fig.10 Fig.11 Fig.12Fig.13 Main board Heat sink G GF Front panel assembly Joint c LCD board CN732 Front

33、 panel assembly D D Joint c Front panel assembly Joint d Plastic rivet Tuner & function board 1-7 UX-V30 Prior to performing the following procedure, remove the rear cover, the side panels and the cassette mechanism assembly. Disconnect the card wire from connector CN1 on the tuner & function board.

34、 Remove the screw H attaching the tuner & function board. Release the two joints e and the joint f of the tuner & function board. 1. 2. 3. Removing the tuner & function board (See Fig.14) Prior to performing the following procedure, remove the rear cover, the side panels and the cassette mechanism a

35、ssembly. Disconnect the harness from connector CN902 on the power transformer. Disconnect the harness from connector CN901 on the AC supply board. Remove the four screws I attaching the power transformer. 1. 2. 3. Removing the power transformer (See Fig.15) *Prior to performing the following procedu

36、re, remove the rear cover, the side panels and the cassette mechanism assembly. Disconnect the harness from connector CN901 on the AC supply board. Remove the screw F attaching the heat sink on the back of the body (Refer to Fig.9). Remove the two screws J attaching the AC supply board. 1. 2. 3. Rem

37、oving the AC supply board (See Fig.15) To remove the AC supply board efficiently, remove the main board in advance. ATTENTION: Fig.14 Fig.15 Joint e Joint f Tuner & function board CN1 H Power transformer board Main board Heat sink AC supply board CN902 CN901 II J J 1-8 UX-V30 Remove the two screws K

38、 attaching the Opt.Dig.out board on the side of the cassette mechanism assembly. 1. Removing the Opt.Dig.out board (See Fig.16) Prior to performing the following procedure, remove the Opt.Dig.out board. Press the eject button on the front side of the cassette mechanism assembly to open the cassette

39、door. Remove the four screws L attaching the cassette mechanism assembly on the back of the assembly. 1. 2. Removing the cassette mechanism assembly (See Fig.16 and 17) Prior to performing the following procedure, remove the rear cover, the side panels and the cassette mechanism assembly. Fig.16 Fig

40、.17 Opt, Dig.out board Cassette door K Eject button Cassette mechanism LL L L 1-9 UX-V30 Disconnect the harness from connector CN721 and CN722, and the card wire from CN766 on the LCD board on the back of the front panel assembly. Remove the five screws M attaching the CD mechanism cover to the fron

41、t panel. Remove the CD mechanism cover together with the CD mechanism assembly. Release the harness from each hook on the CD mechanism cover. Remove the five screws N attaching the CD mechanism cover and the CD mechanism case. Release the three joints g of the CD mechanism cover and the CD mechanism

42、 case by pushing the joint hooks inward. Disconnect the card wire from connector CN603 and the harness from CN605 on the CD servo control board. Remove the CD mechanism assembly from the CD mechanism cover by pulling out it from the three bosses h. 1. 2. 3. 4. 5. 6. Removing the CD mechanism assembl

43、y (See Fig.18 to 21) Remove the screw O attaching the LED board (A).1. Removing the LED board (A) (See Fig.21) Prior to performing the following procedure, remove the rear cover, the side panels, the cassette mechanism assembly, the main board and the front panel assembly. Fig.18 Fig.19 Fig.20Fig.21

44、 M M M R CD mechanism cover (CD mechanism assembly) LCD board CN766 CN721 CN722 Loading motor Belt Joint g CD mechanism case Loading motor CD mechanism cover N Joint g Joint g N NN CD mechanism cover CD mechanism case Joint g CD mechanism cover LCD board (A) CD servo control board CN603 CN605 1-10 U

45、X-V30 Prior to performing the following procedure, remove the CD mechanism assembly. Remove the screw P attaching the LED board (B).1. Removing the LED board (B) (See Fig.22) Prior to performing the following procedure, remove the LCD board assembly. Remove the eight screws T attaching the operation

46、 switch board. 1. Removing the operation switch board (See Fig.24) Release the hook i fixing the CD door switch board to the CD mechanism cover. 1. Removing the CD door switch board (See Fig.22) Prior to performing the following procedure, remove the CD mechanism assembly and the LED board (A) / (B)

47、. Remove the two screws Q attaching the CD servo control board. Pull out the CD servo control board in the direction of the arrow by releasing the two joints j. 1. 2. Removing the CD servo control board (See Fig.22) Remove the belt and the two screws R attaching the loading motor on the back of the

48、front panel assembly. 1. Removing the loading motor (See Fig.18) Prior to performing the following procedure, remove the CD mechanism cover (CD mechanism assembly). Remove the two screws S attaching the LCD board assembly. Disconnect connector CN781 on the LCD board assembly from the operation switc

49、h board. 1. 2. Removing the LCD board assembly (See Fig.23) Fig.18 Fig.22 Fig.23 Fig.24 Joint j LCD board (A) CD servo control board CD door switch board Hook i LCD board (B) P Q O Q M M M R CD mechanism cover (CD mechanism assembly) LCD board CN766 CN721 CN722 Loading motor Belt LCD board assembly Operation switch board S CN781 T T T Operation switch board 1-11 UX-V30 Removing the Playback/Recording & Eraser Head ( See Figs. 1 and 2 ) 1. While shifting the trigger a