JVC-UXG45-cs-sm 电路图 维修手册.pdf

SERVICE MANUAL COPYRIGHT 2006 Victor Company of Japan, Limited No.MB533 2006/6 MICRO COMPONENT SYSTEM MB53320066 UX-G45B,UX-G45E, UX-G45EN,UX-G45EV Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade) TABLE OF CONTENTS 1PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 2SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6 3DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7 4ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14 5TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15 CA-UXG45SP-UXG45SP-UXG45 RadioFans.CN 收音机爱 好者资料库 1-2 (No.MB533) SPECIFICATION Design and specifications are subject to change without notice. Amplifier sectionOutput Power80 W per channel, min. RMS, driven into 6 at 1 kHz with no more than 10% total harmonic distortion. (IEC268-3) Speakers/Impedance6 - 16 Audio InputAUX (Input sensitivity/Impedance) LEVEL1 : 150 mV/47 k LEVEL2 : 500 mV/47 k USBVer.1.1 Tuner sectionFM tuning range87.50 MHz - 108.00 MHz AM (MW) tuning range522 kHz - 1 629 kHz CD player section Dynamic range85 dB Signal-to-noise ratio85 dB Wow and flutterImmeasurable GeneralPower requirementAC 230 V , 50 Hz Power consumption145 W (at operation) 20 W (on standby) 0.9 W (standby and on Display off) Dimensions (approx.)175 mm 246 mm 415 mm (W/H/D) Mass (approx.)6.2 kg SpeakersType2-way Bass reflex Speaker units Woofer12 cm cone 1 Tweeter4 cm cone 1 Impedance6 Dimensions (approx.)145 mm 246 mm 212 mm (W/H/D) Mass (approx.)2.2 kg each RadioFans.CN 收音机爱 好者资料库 (No.MB533)1-3 SECTION 1 PRECAUTIONS 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 writing 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. 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 electrical and mechanical parts in the products have special safety-related characteristics. These characteris- 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 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 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 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 exposed 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 the 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 method 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 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 measure 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 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) 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 for local voltage. 1.3Caution Burrs formed during molding may be left over on some parts of 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 resistor ( ), 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 exposed 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.MB533) 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- 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; furthermore 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. Please 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 replacement 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 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. (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 safety 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.MB533)1-5 1.6Important 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 when 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 is able to function. 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 operation check. WARNING LABEL and PRINT 1-6 (No.MB533) SECTION 2 SPECIFIC SERVICE INSTRUCTIONS This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS. (No.MB533)1-7 SECTION 3 DISASSEMBLY 3.1Main Body 3.1.1Removing the side panel (See Fig.1, 2) (1) Remove the four screws A attaching the rear cover. (See Fig.1) (2) Remove the six screws B attaching the side panel . (See Fig.1) (3) Remove the four screws C attaching the side panel. (See Fig.2) Fig.1 Fig.2 A BB AAE CC 1-8 (No.MB533) 3.1.2Removing the top cover (See Fig.1, 3) (1) Remove the four screws D attaching the top cover and the side panel. (See Fig.3) (2) Remove the one screw E attaching the top cover. (See Fig.1) Caution: When take out the top cover, raise slowly, take care not to break the two claws of the front panel. Fig.3 3.1.3Removing the power trans board (See Fig.4) (1) Remove the two screws F attaching the power trans board. (2) Disconnect the connector wire from the connector CN103 of the main board. (3) Disconnect the connector wires from the connectors CN901, CN902 of the trans board. Fig.4 D D bb F CN901 CN902 CN103 Connector wire a (No.MB533)1-9 3.1.4Removing the tuner pack (See Fig.5, 6) (1) Remove the two screws G attaching the tuner pack. (See Fig.5) (2) Disconnect the card wire from the connector CN351 of the main board. (See Fig.6) 3.1.5Removing the fan (See Fig.5, 6) (1) Remove the four screws H attaching the fan. (See Fig.5) (2) Disconnect the connector wire from the connector CN141 of the main board. (See Fig.6) 3.1.6Removing the main board (See Fig.5, 7) (1) Remove the two screws J attaching the main board. (See Fig.5) (2) Remove the tow screws K attaching the main board and the front board. (See Fig.7) (3) Disconnect the card wires from the connectors CN401, CN402 of the main board. (See Fig.7) (4) Disconnect the card wire from the connector CN403 of the main board. (See Fig.7) (5) Disconnect the parallel wire from the connector CN502 of the main board. (See Fig.7) (6) Disconnect the connector wires from the connectors CN101, CN102, CN204, CN361 of the main board. (See Fig.7) (7) Remove the five screws L attaching the main board. (See Fig.7) (8) (8) Remove the two screws M attaching the main board and CD mechanism cover. (See Fig.7) Fig.5 Fig.6 Fig.7 G H H H J J S CN351 CN141 CN402 CN401 CN403 K CN502 CN102 CN101 CN204 M L L L CN361 1-10 (No.MB533) 3.1.7Removing the front panel assembly (See Fig.3, 4, 8, 9) (1) Pull out the tow connector wires a on the bottom chassis. (See Fig.4) (2) Remove the two screws N attaching the front panel. (See Fig.8) (3) Disconnect the connector wire from the connector CN860 of the CD board. (See Fig.9) (4) Disengage the four hooks b are remove the front panel as- sembly. (See Fig.3) Fig.8 Fig.9 N CN860 R BN702 BN703 R R CN701 (No.MB533)1-11 3.1.8Removing the CD mechanism assembly (See Fig.10 to 12) (1) Remove the four screws P attaching the CD mechanism cover and then remove it. (See Fig.10) (2) Turn the gear c and then undraw the CD tray. (See Fig.11) (3) Remove the four screws Q attaching the CD mechanism assembly. (See Fig.12) Fig.10 Fig.11 Fig.12 P c QQ 1-12 (No.MB533) 3.1.9Removing the CD board (See Fig.9) (1) Remove the three screws R attaching the CD Board. (2) Disconnect the connector wires connected to the CD mechanism assembly from the connectors BN702, B703 of the CD board. (3) Disconnect the card wire from the connector CN701 of the CD board. 3.1.10 Removing the rear panel (See Fig.5, 13) (1) Remove the one screw S attaching the rear panel. (See Fig.5) (2) Disengage the two hooks d and remove the rear panel. (See Fig.13) Fig.13 3.1.11 Removing the power transformer (See Fig.14) (1) Remove the four screws T attaching the power transform- er. Fig.14 d T T (No.MB533)1-13 3.1.12 Removing the VFD board (See Fig.15, 16) (1) Take out the volume knob. (See Fig.15) (2) Remove the four screws U attaching the VFD board. (See Fig.16) 3.1.13 Removing the key board (See Fig.16) (1) Remove the fourteen screws V attaching the key board. 3.1.14 Removing the jack board (See Fig.16) (1) Remove the four screws W attaching the jack board. Fig.15 Fig.16 Volume knob UU VV V V V W 1-14 (No.MB533) SECTION 4 ADJUSTMENT This service manual does not describe ADJUSTMENT. (No.MB533)1-15 SECTION 5 TROUBLESHOOTING This service manual does not describe TROUBLESHOOTING. (No.MB533) Audio/Video Systems Category 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan Victor Company of Japan, Limited VPT Printed in Japan 3-1 PARTS LIST * All printed circuit boards and its assemblies are not available as service parts. - Contents - Exploded view of general assembly and parts list (Block No.M1) Electrical parts list (Block No.0104) Packing materials and accessories parts list (Block No.M3) UX-G45B,UX-G45E,UX-G45EN,UX-G45EV 3-2 3-5 3-12 MB533 3-2 Exploded view of general assembly and parts list Block No.M MM1 Main boar VFD board Power Trans board Key board Jack board a 18 40 15 11 40 17 18 42 3 2 3