Jvc-UXG-500-Service-Manual电路原理图.pdf

《Jvc-UXG-500-Service-Manual电路原理图.pdf》由会员分享，可在线阅读，更多相关《Jvc-UXG-500-Service-Manual电路原理图.pdf（61页珍藏版）》请在收音机爱好者资料库上搜索。

1、SERVICE MANUALCOPYRIGHT 2008 Victor Company of Japan, LimitedNo.MB6742008/10MICRO COMPONENT SYSTEMMB674200810SERVICE MANUALUX-G500VB, UX-G500VE, UX-G500VEN, UX-G500VEV, UX-G500VEE, UX-G500VA, UX-G500VUS, UX-G500VUB, UX-G500VUW, UX-G500VUX, UX-G500VUG, UX-G500VUN, UX-G500VUF, UX-G500VUP, UX-G500VUT,

2、UX-G500VUHCOPYRIGHT 2008 Victor Company of Japan, LimitedLead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade)Lead free solder used in the board (material : Sn-Cu, melting point : 230 Centigrade)TABLE OF CONTENTS1 PRECAUTION. . . . . . . . . . . . . . . . . . . . .

3、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-42 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-73 DISASSEMBLY . . . . . . . . . . . . . . . . . .

4、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-74 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-195 TROUBLESHOOTING . . . . . . .

5、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-19SUPER VIDEOFor asia and EV version For europe except EV version1-2 (No.MB674)SPECIFICATIONUX-G500VB/E/EN/EV/EEAmplifier sectionOutput Power 60 W (30 W + 30 W) at 4 (10% THD)Audio

6、Input AUDIO IN: Stereo min. ( 3.5 mm) 500 mV/50 k (at“IN_LVL1”)250 mV/50 k (at “IN_LVL2”)125 mV/50 k (at”IN_LVL3”)Audio input/output AV-Scart Input: TV Sound onlyDigital output OPTICAL DIGITAL OUT -21 dBm to -15 dBm (660 nm30 nm)Digital input USB MEMORYAV (SCART) Color system PAL (interlaced/progres

7、sive)Composite video 1 V(p-p)/75 S-VIDEO Y (luminance) 1 V(p-p)/75 C (chrominance, burst) 0.3 V(p-p)/75 RGB 0.7 V(p-p)/ VIDEO OUT (COMPONENT)(Y) 1 V(p-p)/75 (PB/PR) 0.7 V(p-p)/75 Speaker impedance 4 - 16 Tuner sectionFM tuning range 87.50 MHz - 108.00 MHzAM (MW) tuning range 522 kHz - 1 629 kHzDisc

8、player sectionPlayable disc DVD Video/CD/VCD/SVCD/CD-R/CD-RW(CD/SVCD/VCD/MP3/WMA/WAV/JPEG/MPEG-1/MPEG-2/DivX format)DVD-R/-RW(DVD-VR/DVDVideo/MP3/WMA/WAV/JPEG/MPEG-1/MPEG-2/DivXformat)+R/+RW(DVDVideo/MP3/WMA/WAV/JPEG/MPEG-1/MPEG-2/DivX format)Dynamic range 80 dBHorizontal resolution 500 linesWow and

9、 flutter ImmeasurableUSB sectionPlayable files MP3/WMA/WAV/JPEG/MPEG-1/MPEG-2/DivX formatUSB specification Compatible with USB 2.0 Full SpeedCompatible device Mass storage classCompatible system FAT16, FAT32Bus power supply DC 5 V 500 mAGeneralPower requirements AC 230 V, 50 HzPower consumption 35 W

10、 (at operation)8 W (at standby)1 W or less (at ECO mode)Dimensions (approx.) 175 mm x 251 mm x 247 mm(W/H/D)Mass (approx.) 2.6 kgSpeakersSpeaker units Tweeter 1.5 cm dome x 1Woofer 10 cm cone x 1Impedance 4 Dimensions (approx.) 160 mm x 250 mm x 169 mm(W/H/D)Mass (approx.) 1.8 kg each(No.MB674)1-3UX

11、-G500VUS/UB/UN/UG/UX/A/UH/UW/UF/UP/UTDesign and specifications are subject to change without notice.Amplifier section-CA-UXG500VOutput power 60 W (30 W + 30 W) at 4 (10% THD)Audio input AUDIO IN: Stereo min. ( 3.5 mm) 500 mV/50 k (at “IN_LVL1”)250 mV/50 k (at ”IN_LVL2”)125 mV/50 k (at ”IN_LVL3”)Audi

12、o output SUBWOOFER OUT 500 mV/10 kDigital output OPTICAL DIGITAL OUT -21 dBm to -15 dBm (660 nm 30 nm)Digital input USB MEMORYVideo out Color system NTSC/PAL (interlaced/progressive)Composite video 1 V(p-p)/75 S-VIDEO Y (luminance) 1 V(p-p)/75 C(chrominance burst)PAL: 0.3 V(p-p)/75 NTSC: 0.286 V(p-p

13、)/75 VIDEO OUT (COMPONENT) (Y) 1 V(p-p)/75 (PB/PR) 0.7 V(p-p)/75 Speaker impedance 4 - 16 Tuner sectionFM tuning range 87.50 MHz - 108.00 MHzAM (MW) tuning range For Saudi Arabia 531 kHz - 1 602 kHz (at 9 kHz intervals)530 kHz - 1 600 kHz (at 10 kHz intervals)For other countries 531 kHz - 1 710 kHz

14、(at 9 kHz intervals)530 kHz - 1 710 kHz (at 10 kHz intervals)Disc player sectionRegion codes Middle East 2South East Asia, Hong Kong region: 3Central and South America, Australia: 4Playable disc DVD Video/CD/VCD/SVCDCD-R/CD-RW(CD/SVCD/VCD/MP3/WMA/WAV/JPEG/MPEG-1/MPEG-2/DivX format)DVD-R/-RW(DVD-VR/D

15、VD Video/MP3/WMA/WAV/JPEG/MPEG-1/MPEG-2/DivX format)+R/+RW(DVD Video/MP3/WMA/WAV/JPEG/MPEG-1/MPEG-2/DivX format)Dynamic range 80 dBHorizontal resolution 500 linesWow and flutter ImmeasurableUSB sectionPlayable files MP3/WMA/WAV/JPEG/MPEG-1/MPEG-2/DivX formatUSB specification Compatible with USB 2.0

16、Full SpeedCompatible device Mass storage classCompatible system FAT16, FAT32Bus power supply DC 5 V=500 mAGeneralPower requirements AC 110 V - 240 V , 50/60 HzFor Australia AC 240 V , 50 HzFor Hong Kong region and Thailand AC 220 V , 50 HzPower consumption 35 W (at operation)8 W (at standby)1 W or l

17、ess (at ECO mode)Dimensions (approx.) 175 mm 251 mm 247 mm (W/H/D)Mass (approx.) 2.6 kgSpeakers-SP-UXG500VSpeaker units Tweeter 1.5 cm dome x 1Woofer 10 cm cone x 1Impedance 4 Dimensions (approx.) 160 mm 250 mm 169 mm (W/H/D)Mass (approx.) 1.8 kg each1-4 (No.MB674)SECTION 1PRECAUTION1.1 Safety Preca

18、utions(1) This design of this product contains special hardware andmany circuits and components specially for safety purpos-es. For continued protection, no changes should be madeto the original design unless authorized in writing by themanufacturer. Replacement parts must be identical tothose used

19、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 design alterations of the product shouldnot be made. Any design alterations or additions will voidthe manufacturers warranty and will f

20、urther relieve themanufacture of responsibility for personal injury or propertydamage resulting therefrom.(3) Many electrical and mechanical parts in the products havespecial safety-related characteristics. These characteris-tics are often not evident from visual inspection nor can theprotection aff

21、orded by them necessarily be obtained by us-ing replacement components rated for higher voltage, watt-age, etc. Replacement parts which have these specialsafety characteristics are identified in the Parts List of Ser-vice Manual. Electrical components having such featuresare identified by shading on

22、 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 recommended replacement parts shown inthe Parts List of Service Manual may create shock, fire, orother hazards.(4) The leads in the produc

23、ts 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 for the prevention of electric shock and firehazard. When service is required, the original lead routingand dress should be observed, and

24、it should be confirmedthat they have been returned to normal, after reassem-bling.(5) Leakage shock hazard testingAfter reassembling the product, always perform an isola-tion check on the exposed metal parts of the product (an-tenna terminals, knobs, metal cabinet, screw heads,headphone jack, contro

25、l 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 line cord directly into the AC outlet. Using a“Leakage Current Tester“, measure the leakage currentfrom each exposed metal parts of the ca

26、binet, 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.). Alternate check methodPlug the AC line cord directly into the AC outlet. Use anAC voltmeter having, 1,000 per volt or more sensitivity

27、in 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 the AC voltage across the resistor with the ACvoltmeter. Move the resistor connection to each exposed metalpart, particularly any exposed

28、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. Voltage 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 desig

29、ned and manufactured tomeet international safety standards.(2) It is the legal responsibility of the repairer to ensure thatthese safety standards are maintained.(3) Repairs must be made in accordance with the relevantsafety standards.(4) It is essential that safety critical components are replacedb

30、y 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 the chassis. Therefore, pay attention to such burrs in the case of pre-forming repair of this system.1.4 Critical parts for safetyIn rega

31、rd 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 ( ), diode ( )and ICP ( ) or identified by the “ “ mark nearby are criticalfor safety. When replacing them, be sure to use the parts of th

32、esame 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 part.AC VOLTMETER(Having 1000 ohms/volts,or more sensitivity)1500 10W0.15 F AC TYPE(No.MB674)1-51.5 Preventing static electricityElectro

33、static discharge (ESD), which occurs when static electricity stored in the body, fabric, etc. is discharged, can destroy the laserdiode in the traverse unit (optical pickup). Take care to prevent this when performing repairs.1.5.1 Grounding to prevent damage by static electricityStatic electricity i

34、n 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 being performed. (1) Ground the workbenchGround the workbench by laying conductive material (such as a conductive sheet) or an iron plate o

35、ver 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 body. (3) Handling the optical pickup In order to maintain quality during transport and before installation, both sides of the laser diod

36、e 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 check the condition of the laser diode in the optical pickup. The testers internal power source can easilydestroy the laser diode. 1.6

37、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 the shorted part of the flexible cable using nippers, etc. after replacing the optical pickup. For specific details, refer to thereplacem

38、ent 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) 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 r

39、esistor 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 unit. Apply solder to the short land sections before the card wire is disconnected from the connecto on the servo board. (If the card wi

40、reis disconnected without applying solder, the pickup may be destroyed by static electricity.) In the assembly, be sure to remove solder from the short land sections after connecting the card wire.1MConductive material(conductive sheet) or iron palate(caption)Anti-static wrist strapSolder short land

41、 section1-6 (No.MB674)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 stare into beam.(Others) Visible and/or invisible class 1M laser radiationwhen open. Do not view directly with optical instruments

42、. 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 and/or invisible laser radiation and is equipped with safety switches which prevent emission of radiation when the drawer is ope

43、n 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 function. 6.CAUTION : Use of controls, adjustments or performance of procedures other than those specified here in may result in haza

44、rdous 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 operationcheck. WARNING LABEL and PRINT(No.MB674)1-7SECTION 2SPECIFIC SERVICE INSTRUCTIONSThis service manual does not describe SPECI

45、FIC SERVICE INSTRUCTIONS.SECTION 3DISASSEMBLY3.1 Main body (Used figure are UX-G500V)3.1.1 Removing the Metal Cover (See Fig.1,2)(1) Remove the seven screws A attaching the Metal cover.(See Fig.1)(2) Remove the two screws B attaching the both side of theMetal cover. (See Fig.2)Fig.1Fig.2AAB1-8 (No.M

46、B674)3.1.2 Removing the Tuner pack (See Fig.3, 4)(1) Disconnect the card wire from Tuner pack connected toconnector CN306 of the Micom board. (See Fig.3)(2) Remove the two screws C attaching the Tuner pack. (SeeFig.4)Fig.3Fig.43.1.3 Removing the Rear panel (See Fig.5)(1) Remove the five screws D att

47、aching the Rear panel.Fig.5CN306CD(No.MB674)1-93.1.4 Removing the Amp board (See Fig.6)(1) Disconnect the connector wire from Power board connect-ed to connector CN640 of the Amp board.(2) Disconnect the card wire from Amp board connected toconnector CN520 of the Micom board.(3) Remove the one screw

48、 E attaching the Amp board.Fig.63.1.5 Removing the DVD mechanism (See Fig.7 to 8)(1) Disconnect the card wire from DVD mechanism connectedto connector CN360 and CN361 of the Connection board.(See Fig.7)(2) Disconnect the connector wire from DVD mechanism con-nected to connector CN811 of the Connecti

49、on board. (SeeFig.7)(3) Disconnect the card wire from DVD mechanism connectedto connector CN205 of the Power board. (See Fig.7)(4) Disconnect the card wire from DVD mechanism connectedto connector CN510 of the Micom board. (See Fig.7)(5) Remove the two screws F attaching the DVD mechanism.(See Fig.8)Fig.7Fig.8ECN640CN520CN205 CN361 CN360CN811 CN510F1-10 (No.MB674)3.1.6 Removing the Mecha chassis (See Fig.9, 10)(1) Remove the two screws G attaching the both side of theFront panel. (See Fig.9)(2) Discon