Jvc-UXF-2-Service-Manual电路原理图.pdf

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1、SERVICE MANUALCOPYRIGHT 2010 Victor Company of Japan, LimitedNo.MB7362010/6MICRO COMPONENT SYSTEMMB73620106SERVICE MANUALUX-F2BE, UX-F2BEN, UX-F2BEV, UX-F2BUS, UX-F2BUWCOPYRIGHT 2010 Victor Company of Japan, LimitedLead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigra

2、de)TABLE OF CONTENTS1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-42 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3、 . . . . . . . . . . 1-73 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-74 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4、. . . . . . . . . . . . . . . . . . . 1-105 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-102SP-UXF2BSP-UXF2BCA-UXF2Bonly for Europe1-2 (No.MB736)SPECIFICATIONDesign and specifications are subject t

5、o change without notice.For Europe(Main unit CA-UXF2B)GeneralPower source AC 230 V , 50 HzPower consumption (at operation) 40 WPower consumption (on standby) 1.00 W or lessDimensions (approx.) (W x H x D) (including projecting parts) 236 mm 123 mm 285 mmMass (approx.) 2.0 kgAmplifierOutput Power 100

6、 W (50 W + 50 W) at 6 (10% THD)Audio Input AUDIO IN: Stereo mini ( 3.5 mm)Speaker impedance 6 - 16 TunerFM frequency 87.50 MHz - 108.00 MHzUSBUSB specification Compatible with USB 2.0 Full SpeedCompatible device Mass storage classCompatible system FAT16, FAT32Output power DC 5 V 500 mASDCompatible d

7、evice SD, SDHCCompatible system FAT16, FAT32Speaker SP-UXF2BSpeaker type Bass-reflex typeTweeter 4 cmWoofer 12 cmImpedance 6 Dimensions (approx.) (W x H x D) (including projecting parts) 141 mm 250 mm 181 mmMass (approx.) 1.8 kg each(No.MB736)1-3SPECIFICATIONDesign and specifications are subject to

8、change without notice.For Asia(Main unit CA-UXF2B)GeneralPower source AC 110 - 127 V/AC 220 - 240 V (adjustable with the voltage selector),50 Hz/60 HzPower consumption (at operation) 40 WPower consumption (on standby) 1.00 W or lessDimensions (approx.) (W x H x D) (including projecting parts) 236 mm

9、 123 mm 285 mmMass (approx.) 2.0 kgAmplifierOutput Power 100 W (50 W + 50 W) at 6 (10% THD)Audio Input AUDIO IN: Stereo mini ( 3.5 mm)Speaker impedance 6 - 16 TunerFM frequency 87.50 MHz - 108.00 MHzAM frequency 531 kHz - 1 710 kHz (at 9 kHz intervals)530 kHz - 1 710 kHz (at 10 kHz intervals)USBUSB

10、specification Compatible with USB 2.0 Full SpeedCompatible device Mass storage classCompatible system FAT16, FAT32Output power DC 5 V 500 mASDCompatible device SD, SDHCCompatible system FAT16, FAT32Speaker SP-UXF2BSpeaker type Bass-reflex typeTweeter 4 cmWoofer 12 cmImpedance 6 Dimensions (approx.)

11、(W x H x D) (including projecting parts) 141 mm 250 mm 181 mmMass (approx.) 1.8 kg each1-4 (No.MB736)SECTION 1PRECAUTION1.1 Safety Precautions(1) This design of this product contains special hardware andmany circuits and components specially for safety purpos-es. For continued protection, no changes

12、 should be madeto the original design unless authorized in writing by themanufacturer. Replacement parts must be identical tothose used in the original circuits. Services should be per-formed by qualified personnel only.(2) Alterations of the design or circuitry of the product shouldnot be made. Any

13、 design alterations of the product shouldnot be made. Any design alterations or additions will voidthe manufacturers warranty and will further relieve themanufacture of responsibility for personal injury or propertydamage resulting therefrom.(3) Many electrical and mechanical parts in the products h

14、avespecial safety-related characteristics. These characteris-tics are often not evident from visual inspection nor can theprotection afforded by them necessarily be obtained by us-ing replacement components rated for higher voltage, watt-age, etc. Replacement parts which have these specialsafety cha

15、racteristics are identified in the Parts List of Ser-vice Manual. Electrical components having such featuresare identified by shading on the schematics and by ( ) onthe Parts List in the Service Manual. The use of a substitutereplacement which does not have the same safety charac-teristics as the re

16、commended replacement parts shown inthe Parts List of Service Manual may create shock, fire, orother hazards.(4) The leads in the products are routed and dressed with ties,clamps, tubings, barriers and the like to be separated fromlive parts, high temperature parts, moving parts and/orsharp edges fo

17、r the prevention of electric shock and firehazard. When service is required, the original lead routingand dress should be observed, and it should be confirmedthat they have been returned to normal, after reassem-bling.(5) Leakage shock hazard testingAfter reassembling the product, always perform an

18、isola-tion check on the exposed metal parts of the product (an-tenna terminals, knobs, metal cabinet, screw heads,headphone jack, control shafts, etc.) to be sure the productis safe to operate without danger of electrical shock.Do notuse a line isolation transformer during this check. Plug the AC li

19、ne cord directly into the AC outlet. Using a“Leakage Current Tester“, measure the leakage currentfrom each exposed metal parts of the cabinet, particular-ly any exposed metal part having a return path to thechassis, to a known good earth ground. Any leakage cur-rent must not exceed 0.5mA AC (r.m.s.)

20、. Alternate check methodPlug the AC line cord directly into the AC outlet. Use anAC voltmeter having, 1,000 per volt or more sensitivityin the following manner. Connect a 1,500 10W resistorparalleled by a 0.15F AC-type capacitor between an ex-posed metal part and a known good earth ground.Measure th

21、e AC voltage across the resistor with the ACvoltmeter. Move the resistor connection to each exposed metalpart, particularly any exposed metal part having a returnpath to the chassis, and measure the AC voltage acrossthe resistor. Now, reverse the plug in the AC outlet andrepeat each measurement. Vol

22、tage measured any mustnot exceed 0.75 V AC (r.m.s.). This corresponds to 0.5mA AC (r.m.s.). 1.2 Warning(1) This equipment has been designed and manufactured tomeet international safety standards.(2) It is the legal responsibility of the repairer to ensure thatthese safety standards are maintained.(3

23、) Repairs must be made in accordance with the relevantsafety standards.(4) It is essential that safety critical components are replacedby approved parts.(5) If mains voltage selector is provided, check setting for localvoltage.1.3 CautionBurrs formed during molding may be left over on some partsof t

24、he chassis. Therefore, pay attention to such burrs in the case of pre-forming repair of this system.1.4 Critical parts for safetyIn regard with component parts appearing on the silk-screenprinted side (parts side) of the PWB diagrams, the parts that areprinted over with black such as the resistor (

25、), diode ( )and ICP ( ) or identified by the “ “ mark nearby are criticalfor safety. When replacing them, be sure to use the parts of thesame type and rating as specified by the manufacturer. (This regulation dose not Except the J and C version)Good earth groundPlace this probe on each exposedmetal

26、part.AC VOLTMETER(Having 1000 ohms/volts,or more sensitivity)1500 10W0.15 F AC TYPE(No.MB736)1-51.5 Preventing static electricityElectrostatic discharge (ESD), which occurs when static electricity stored in the body, fabric, etc. is discharged, can destroy the laserdiode in the traverse unit (optica

27、l pickup). Take care to prevent this when performing repairs.1.5.1 Grounding to prevent damage by static electricityStatic electricity in the work area can destroy the optical pickup (laser diode) in devices such as laser products. Be careful to use proper grounding in the area where repairs are bei

28、ng performed. (1) Ground the workbenchGround the workbench by laying conductive material (such as a conductive sheet) or an iron plate over it before placing thetraverse unit (optical pickup) on it.(2) Ground yourselfUse an anti-static wrist strap to release any static electricity built up in your b

29、ody. (3) Handling the optical pickup In order to maintain quality during transport and before installation, both sides of the laser diode on the replacement opticalpickup are shorted. After replacement, return the shorted parts to their original condition. (Refer to the text.) Do not use a tester to

30、 check the condition of the laser diode in the optical pickup. The testers internal power source can easilydestroy the laser diode. 1.6 Handling the traverse unit (optical pickup)(1) Do not subject the traverse unit (optical pickup) to strong shocks, as it is a sensitive, complex unit. (2) Cut off t

31、he shorted part of the flexible cable using nippers, etc. after replacing the optical pickup. For specific details, refer to thereplacement procedure in the text. Remove the anti-static pin when replacing the traverse unit. Be careful not to take too long atime when attaching it to the connector. (3

32、) Handle the flexible cable carefully as it may break when subjected to strong force. (4) I t is not possible to adjust the semi-fixed resistor that adjusts the laser power. Do not turn it.1.7 Attention when traverse unit is decomposed*Please refer to “Disassembly method“ in the text for the pickup

33、unit. Apply solder to the short land sections before the card wire is disconnected from the connector on the servo board. (If the card wireis disconnected without applying solder, the pickup may be destroyed by static electricity.) In the assembly, be sure to remove solder from the short land sectio

34、ns after connecting the card wire.1MConductive material(conductive sheet) or iron palate(caption)Anti-static wrist strapsolder short part1-6 (No.MB736)1.8 Important for laser products1.CLASS 1 LASER PRODUCT 2.CAUTION : (For U.S.A.) Visible and/or invisible class II laser radiationwhen open. Do not s

35、tare into beam.(Others) Visible and/or invisible class 1M laser radiationwhen open. Do not view directly with optical instruments. 3.CAUTION : Visible and/or invisible laser radiation whenopen and inter lock failed or defeated. Avoid directexposure to beam.4.CAUTION : This laser product uses visible

36、 and/or 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 defeated. It is dangerous to defeat the safety switches.5.CAUTION : If safety switches malfunction, the laser is ableto func

37、tion. 6.CAUTION : Use of controls, adjustments or performance of procedures other than those specified here in may result in hazardous radiation exposure. REPRODUCTION AND POSITION OF LABELS and PRINT!Please use enough caution not to see the beam directly or touch it in case of an adjustment or oper

38、ationcheck. WARNING LABEL and PRINT(No.MB736)1-7SECTION 2SPECIFIC SERVICE INSTRUCTIONSThis service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.SECTION 3DISASSEMBLY3.1 Main body (Used model: UX-F2E)3.1.1 Removing the Top cover (See Fig.1, 2, 3)(1) Remove the four screws A attaching the Top

39、 cover. (SeeFig.1)Fig.1(2) Remove the two screws B and two screws C attaching bothside of the Top cover. (See Fig.2)Fig.2(3) Remove the three screws D and three screws E attachingthe Top cover. (See Fig.3)Fig.33.1.2 Removing the Main board (See Fig.4)(1) Disconnect the connector wire from Jack board

40、 connectedto connector CN606 of the Main board.(2) Disconnect the connector wire from FAN connected to con-nector CN612 of the Main board.(3) Disconnect the card wire from Upgrade board connected toconnector CN605 of the Main board.(4) Disconnect the connector wire from SMPS board connect-ed to conn

41、ector CN603 of the Main board.(5) Disconnect the card wire from MPEG board connected toconnector CN609 of the Main board.(6) Disconnect the connector wire from MPEG board connect-ed to connector CN607 of the Main board.(7) Disconnect the connector wire from SMPS board connect-ed to connector CN601 o

42、f the Main board.(8) Disconnect the card wire from Display board connected toconnector CN602 of the Main board.(9) Disconnect the card wire from Tuner pack connected toconnector CN604 of the Main board.(10) Remove the five screws F attaching the Main board.Fig.4A ABCDEFFFFFCN606CN605CN604CN612 CN603

43、CN609CN607CN601CN6021-8 (No.MB736)3.1.3 Removing the SMPS board (See Fig.5, 6)(1) Disconnect the connector wire from Display board connect-ed to connector CN902 of the SMPS board. (See Fig.5)Fig.5(2) Remove the two screws G, one screw H and one screw Jattaching the SMPS board. (See Fig.6)Fig.63.1.4

44、Removing the CD mechanism (See Fig.7, 8, 9, 10, 11)(1) Remove the one screw K and one screw L attaching theRear cabinet bracket. (See Fig.7)Fig.7(2) Remove the two screws M and two screws N attaching theCD mechanism. (See Fig.8)Fig.8(3) Disconnect the connector wire from MPEG board connect-ed to con

45、nector of Loader board. (See Fig.9)Fig.9(4) Solder the short part of the Pickup board. (See fig.10)Fig.10(5) Disconnect the card wire from CD mechanism connectedto connector CN102 of the MPEG board. (See Fig.11)Fig.11CN902GHJKLMNMNLoader boardconnectorsolder short partCN102(No.MB736)1-93.1.5 Removin

46、g the MPEG board (See Fig.12)(1) Disconnect the card wire from USB board connected toconnector CN108 of the MPEG board.(2) Remove the four screws P attaching the MPEG board.Fig.123.1.6 Removing the Front panel (See Fig.13, 14)(1) Disengage one hook a engaged Front panel. (See Fig.13)Fig.13(2) Diseng

47、age two hooks b engaged both side of the Frontpanel. (See Fig.14)Fig.143.1.7 Removing the Jack board (See Fig.15)(1) Remove the two screws Q attaching the Jack board.Fig.153.1.8 Removing the USB board (See Fig.16)(1) Disconnect the connector wire from Display board connect-ed to connector CN203 of t

48、he USB board.(2) Remove the two screws R attaching the USB board.Fig.163.1.9 Removing the Display board (See Fig.17)(1) Remove the twelve screws S attaching the Display board.Fig.17CN108PPPhook ahook bQRCN203SSSS1-10 (No.MB736)SECTION 4ADJUSTMENTThis service manual does not describe ADJUSTMENT.SECTION 5TROUBLESHOOTINGThis service manual does not describe TROUBLESHOOTING.