JVC-UXG70-cs-sm 电路图 维修手册.pdf

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1、SERVICE MANUAL COPYRIGHT 2006 Victor Company of Japan, Limited No.MB505 2006/6 MICRO COMPONENT SYSTEM MB50520066 UX-G70J,UX-G70C,UX-G70B, UX-G70E,UX-G70EN, UX-G70EV,UX-G70EE Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade) TABLE OF CONTENTS 1PRECAUTION. . . .

2、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 2SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8 3DISASSEMBLY . .

3、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9 4ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

4、2 5TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-37 CA-UXG70 SUPER VIDEO SP-UXG70SP-UXG70 RadioFans.CN 收音机爱 好者资料库 1-2 (No.MB505) SPECIFICATION Design and specifications are subject to change without

5、 notice. Amplifier sectionOutput Power Northern america120 W per channel, min. RMS, driven into 6 at 1kHz with no more than 10% total harmonic distortion. (for northern america) Europe160 W (80 W+80 W) at 6 (10% THD) for europe Audio InputLINE IN500 mV/49 k (at L.IN LVL1) 250 mV/49 k (at L.IN LVL2)

6、125 mV/49 k (at L.IN LVL3) GAME IN (northern america)500 mV/49 k TV SOUND IN500 mV/49 k Audio Output LINE OUT1.0 Vrms (3 k) (at L.OUT LVL1) 500 mVrms (1.5 k) (at L.OUT LVL2) SUBWOOFER OUT260 mVrms/3.9 k HEADPHONES OUT17 mW/32 Digital output DVD OPTICAL DIGITAL OUT -21 dBm to -15 dBm (660 nm 30 nm) U

7、SB inputUSB AUDIO Video Output Color systemNTSC (interlaced/progressive) for northern america PAL (interlaced/progressive) for europe VIDEO (composite)1 V(p-p)/75 S-VIDEOY (luminance) : 1 V(p-p)/75 C (chrominance, burst) : 0.286 V(p-p)/75 for northern america C (chrominance, burst) : 0.3 V(p-p)/75 f

8、or europe RGB0.7 V(p-p)/75 for europe COMPONENT(Y) : 1 V(p-p)/75 (PB/PR) : 0.75 V(p-p)/75 for northern america (PB/PR) : 0.7 V(p-p)/75 for europe Speaker impedance6 - 16 Headphone impedance16 - 1 k Tuner sectionFM tuning range87.5 MHz - 108.0 MHz AM tuning range530 kHz - 1 710 kHz for northern ameri

9、ca 522 kHz - 1 629 kHz fro europe Disc player section Playable discDVD Video/DVD Audio/CD/VCD/SVCD CD-R/CD-RW (CD/SVCD/VCD/MP3/WMA/JPEG format) DVD-R/-RW (DVD-VR/DVD Video/MP3/WMA/JPEG format) +R/+RW (DVD Video format) DVD-ROM (DVD Video format) Dynamic range80 dB Horizontal resolution500 lines Wow

10、and flutterImmeasurable GeneralPower requirementAC 120 V , 60 Hz for northern america AC 230 V , 50 Hz for europe Power consumption90 W (at operation) for northern america 95 W (at operation) for europe 14 W (at standby) 1.0 W (at standby display OFF mode) Dimensions (approx.)(W/H/D)175 mm 250 mm 41

11、1 mm (6-9/10 inch 9-7/8 inch 16-1/5 inch) SpeakersSpeaker units Tweeter1.5 cm (5/8 inch) dome 1 Squawker4 cm (1-5/8 inch) cone 1 Woofer13.5 cm (5-3/8 inch) cone 1 Impedance6 Dimensions (approx.) (W/H/D)166 mm 250 mm 232 mm (6-9/16 inch 9-7/8 inch 9-3/16 inch) Mass (approx.)2.8 kg (6.2 lbs) each Radi

12、oFans.CN 收音机爱 好者资料库 (No.MB505)1-3 SECTION 1 PRECAUTION 1.1Safety Precautions (1) This design of this product contains special hardware and many circuits and components specially for safety purpos- es. For continued protection, no changes should be made to the original design unless authorized in wri

13、ting by the manufacturer. Replacement parts must be identical to those used in the original circuits. Services should be per- formed 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. An

14、y 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 electrical and mechanical parts in the products have special safety-related characteristics. These ch

15、aracteris- tics are often not evident from visual inspection nor can the protection afforded by them necessarily be obtained by us- ing replacement components rated for higher voltage, watt- age, etc. Replacement parts which have these special safety characteristics are identified in the Parts List

16、of Ser- vice 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 have the same safety charac- teristics as the recommended replacement parts shown in the

17、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 temperature parts, moving parts and/or sharp edges for the prevention of electric shock

18、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 reassem- bling. (5) Leakage shock hazard testing After reassembling the product, always perform an isola- tion check on the expo

19、sed metal parts of the product (an- tenna terminals, knobs, metal cabinet, 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 th

20、e AC outlet. Using a Leakage Current Tester, measure the leakage current from each exposed metal parts of the cabinet, particular- ly any exposed metal part having a return path to the chassis, to a known good earth ground. Any leakage cur- rent must not exceed 0.5mA AC (r.m.s.). Alternate check met

21、hod Plug the AC line cord directly into the AC outlet. Use an AC voltmeter having, 1,000 per volt or more sensitivity in the following manner. Connect a 1,500 10W resistor paralleled by a 0.15F AC-type capacitor between an ex- posed metal part and a known good earth ground. Measure the AC voltage ac

22、ross 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 measure the AC voltage across the resistor. Now, reverse the plug in the AC outlet and repeat each measurement. Voltage measu

23、red any must not exceed 0.75 V AC (r.m.s.). This corresponds to 0.5 mA AC (r.m.s.). 1.2Warning (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) Re

24、pairs 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 for local voltage. 1.3Caution Burrs formed during molding may be left over on some parts o

25、f the chassis. Therefore, pay attention to such burrs in the case of pre- forming repair of this system. 1.4Critical parts for safety 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 resi

26、stor ( ), diode ( ) and ICP ( ) or identified by the mark nearby are critical for safety. When replacing them, be sure to use the parts of the same type and rating as specified by the manufacturer. (This regulation dose not Except the J and C version) Good earth ground Place this probe on each expos

27、ed metal part. AC VOLTMETER (Having 1000 ohms/volts, or more sensitivity) 1500 10W 0.15 F AC TYPE RadioFans.CN 收音机爱 好者资料库 1-4 (No.MB505) 1.5 Safety Precautions (U.K only) (1) This design of this product contains special hardware and many circuits and components specially for safety purposes. For con

28、- tinued protection, no changes should be made to the original design unless authorized in writing by the manufacturer. Replace- ment parts must be identical to those used in the original circuits. (2) Any unauthorised design alterations or additions will void the manufacturers guarantee; furthermor

29、e the manufacturer cannot accept responsibility for personal injury or property damage resulting therefrom. (3) Essential safety critical components are identified by ( ) on the Parts List and by shading on the schematics, and must never be replaced by parts other than those listed in the manual. Pl

30、ease note however that many electrical and mechanical parts in the product have special safety related characteristics. These characteristics are often not evident from visual inspection. Parts other than specified by the manufacturer may not have the same safety characteristics as the recommended r

31、eplacement parts shown in the Parts List of the Service Manual and 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 temperature parts, moving parts and/or sharp edges

32、 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. 1.5.1Warning (1) Service should be performed by qualified personnel only. (

33、2) This equipment has been designed and manufactured to meet international safety standards. (3) It is the legal responsibility of the repairer to ensure that these safety standards are maintained. (4) Repairs must be made in accordance with the relevant safety standards. (5) It is essential that sa

34、fety critical components are replaced by approved parts. (6) If mains voltage selector is provided, check setting for local voltage. 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. (No.

35、MB505)1-5 1.6Preventing 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 traverse unit (optical pickup). Take care to prevent this when performing repairs. 1.6.1 Grounding to prev

36、ent damage by static electricity Static 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 being performed. (1) Ground the workbench Ground the workbench by laying conductive ma

37、terial (such as a conductive sheet) or an iron plate over it before placing the traverse unit (optical pickup) on it. (2) Ground yourself Use 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 transp

38、ort 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 use a tester to check the condition of the laser diode in the optical pickup. The testers int

39、ernal power source can easily destroy the laser diode. 1.7Handling 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

40、 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. (3) Handle the flexible cable carefully as it may break when subjected to str

41、ong force. (4) I t is not possible to adjust the semi-fixed resistor that adjusts the laser power. Do not turn it. 1.8Attention 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 discon

42、nected from the connecto on the servo board. (If the card wire is 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. 1M Conductive material (conductive sheet)

43、 or iron palate (caption) Anti-static wrist strap Card wire DVD pickup DVD changer mechanism assembly Connector Short land section 1-6 (No.MB505) 1.9Importance administering point on the safety D9013 D9004 D9022 D9003 D9014 D9011 D9023 D9001 C9023 CN903 D9002 D9024 C9005 S9001 C9013 D9021 C9003 CN90

44、5 C9011 C9014 D9012 D9025 C9024 CN904 C9002 C9021 C9012 B9201 C9004 C9022 T9000 B9200 C9001 C9015 C9025 Q9031 D9031 C9031 R9032 D9032 R9033 R9031 LF901 CN901 C9044 D9040 D9043 D9044 RY901 R9046 R9045 R9044 C9042 Q9044 D9042 B9204 D9045 D9046 D9047 IC901 D9048 C9041 C9045 C9051 B9106 FT906 FT908 FT91

45、2 FT910 FT914 FT902 FT904 FT903 FT901 B9950 B9304 B9500 B9305 FT911 B9700 FT909 FT905 FT907 FT913 B9203 B9205 Q9043 B9303 HS901 B9600 B9202 B9502 B9501 B9302 B9101 B9100 B9301 B9300 HS902 B9104 B9105 B9900 B9102 B9103 R9050 C9052 EP901 C9043 CN906 Graphic symbol mark (This symbol means fast blow typ

46、e fuse.) FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE AND RATING OF FUSES ; should be read as follows ; F9001 : 6.3A 125V F9002 : 6.3A 125V F9003 : 3.15A 125V F9004 : 3.15A 125V F9006 : 2.5A 125V F9001 : 6.3A 125V F9002 : 6.3A 125V F9003 : 3.15A 125V F9004 : 3.15A 125V

47、F9006 : 2.5A 125V Full Fuse Replacement Marking FUSE CAUTION Le symbole graphique (Ce symbole signifie fusible de type a fusion rapide.) POUR UNE PROTECTION CONTINUE CONTRE DES RISQUES DINCENDIE, REMPLACER SEULEMENT PAR UN FUSIBLE DU MEME TYPE ; Marquage Pour Le Remplacement Complet De Fusible PRECA

48、UTIONS SUR LES FUSIBLES doit etre interprete comme suit ; (No.MB505)1-7 1.10 Important for laser products 1.CLASS 1 LASER PRODUCT 2.CAUTION : (For U.S.A.) Visible and/or invisible class II laser radiation when open. Do not stare into beam. (Others) Visible and/or invisible class 1M laser radiation w

49、hen open. Do not view directly with optical instruments. 3.CAUTION : Visible and/or invisible laser radiation when open and inter lock failed or defeated. Avoid direct exposure 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 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 i