JVC-THP3-ddcs-sm维修电路原理图.pdf

SERVICE MANUAL COPYRIGHT 2008 Victor Company of Japan, Limited No.MB512 2008/7 DVD DIGITAL CINEMA SYSTEM MB51220087 SERVICE MANUAL TH-P5B, TH-P5E, TH-P5EN, TH-P5EV, TH-P3B, TH-P3E, TH-P3EN, TH-P3EV, TH-G10B, TH-G10E, TH-G10EN, TH-G10EV COPYRIGHT 2008 Victor Company of Japan, Limited Lead 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 CONTENTS 1PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4 2SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7 3DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7 4ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-20 5TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-23 (Only for TH-P5/TH-G10) TH-P3/TH-G10TH-P5 SP-WP5 XV-THP5 SP-THP5C SP-THP5S SP-THP5F XV-THP3/XV-THG10 SP-WP5/ SP-THG10W SP-THP3C/SP-THG10C SP-THP3F/ SP-THG10F SP-THP3S/ SP-THG10S RadioFans.CN 收音机爱 好者资料库 1-2 (No.MB512) SPECIFICATION Center unit (XV-THP5/XV-THP3/XV-THP10) Subwoofer (SP-WP5/SP-THG10W) Audio sectionFront/Surround40 W per channel, RMS at 3 at 1 kHz, with 10 % total harmonic distortion. Center100 W, RMS at 4 at 1 kHz, with 10 % total harmonic distortion. Subwoofer100 W, RMS at 4 at 30 Hz, with 10 % total harmonic distortion. Video sectionVideo SystemPAL Horizontal Resolution500 lines Signal-to-Noise Ratio64 dB(Composite signal when RGB is selected) Video output levelComposite1.0 V(p-p)/75 Y1.0 V(p-p)/75 C0.3 V(p-p)/75 RGB0.7 V(p-p)/75 Only for XV-THP5Component-Y1.0 V(p-p)/75 Component-PB/PR0.7 V(p-p)/75 USB storageUSB specificationCompatible with the USB 2.0 Full-Speed Compatible deviceMass Storage Class Compatible file systemFAT16, FAT32 Bus power supplyMax. 500 mA Tuner sectionTuning RangeFM87.50 MHz to 108.00 MHz AM (MW)522 kHz to 1 629 kHz GeneralPower RequirementsAC 230 V , 50 Hz Power Consumption60 W (at operation) 1.4 W (in standby mode) Dimensions (W H D)435 mm 70 mm 308 mm Mass3.0 kg TypeBass-Reflex Type Speaker16 cm cone 1 Power Handling Capacity100 W Impedance4 Frequency Range35 Hz to 200 Hz Sound Pressure Level75 dB/Wm Dimensions (W H D)129 mm 284 mm 337 mm Mass3.1 kg RadioFans.CN 收音机爱 好者资料库 (No.MB512)1-3 Satellite speakers (For TH-P5) Satellite speakers (For TH-P3/TH-G10) Designs and specifications are subject to change without notice. Front speakers (SP-THP5F)Type3-Way Bass-Reflex Type (Magnetically-shielded Type) Speaker11.5 cm cone 1 4 cm cone 1 1.5 cm cone 1 Power Handling Capacity40 W Impedance3 Frequency Range60 Hz to 20 000 Hz Sound Pressure Level82 dB/Wm Dimensions (W H D)146 mm 246.5 mm 208 mm Mass2.2 kg each Center speaker (SP-THP5C)Type1-Way Bass-Reflex Type (Magnetically-shielded Type) Speaker6.5 cm cone 2 Power Handling Capacity100 W Impedance4 Frequency Range90 Hz to 20 000 Hz Sound Pressure Level79 dB/Wm Dimensions (W H D)250 mm 85 mm 91 mm Mass0.82 kg Surround speakers (SP-THP5S)Type1-Way Bass-Reflex Type Speaker6.5 cm cone 1 Power Handling Capacity40 W Impedance3 Frequency Range90 Hz to 20 000 Hz Sound Pressure Level72 dB/Wm Dimensions (W H D)79.5 mm 147 mm 88 mm Mass0.51 kg each Front speakers (SP-THP3F/SP-THG10F) Type1-Way Bass-Reflex Type (Magnetically-shielded Type) Speaker6.5 cm cone 1 Power Handling Capacity40 W Impedance3 Frequency Range90 Hz to 20 000 Hz Sound Pressure Level75 dB/Wm Dimensions (W H D)92 mm 99 mm 95.5 mm Mass0.45 kg each Center speaker (SP-THP3C/SP-THG10C) Type1-Way Bass-Reflex Type (Magnetically-shielded Type) Speaker6.5 cm cone 1 Power Handling Capacity100 W Impedance4 Frequency Range90 Hz to 20 000 Hz Sound Pressure Level76 dB/Wm Dimensions (W H D)92 mm 99 mm 95.5 mm Mass0.45 kg Surround speakers (SP-THP3S/SP-THG10S) Type1-Way Bass-Reflex Type Speaker6.5 cm cone 1 Power Handling Capacity40 W Impedance3 Frequency Range90 Hz to 20 000 Hz Sound Pressure Level72 dB/Wm Dimensions (W H D)92 mm 99 mm 95.5 mm Mass0.48 kg each 1-4 (No.MB512) 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 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 (No.MB512)1-5 1.5Preventing 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. 1.5.1 Grounding to prevent 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 material (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 transport 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 internal power source can easily destroy the laser diode. 1.6Handling 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 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 strong force. (4) I t is not possible to adjust the semi-fixed resistor that adjusts the laser power. Do not turn it. 1.7Attention 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 flexible wire is disconnected from the connecto on the servo board. (If the flexible 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 flexible wire. 1M Conductive material (conductive sheet) or iron palate (caption) Anti-static wrist strap Solder short 1-6 (No.MB512) 1.8Important 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 (No.MB512)1-7 SECTION 2 SPECIFIC SERVICE INSTRUCTIONS This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS. SECTION 3 DISASSEMBLY 3.1Main body 3.1.1Removing the top cover (See Fig.1 and 2) (1) Remove the two screws A attaching the top cover of both side. (See Fig.1) (2) Remove the five screws B attaching the top cover of rear side. (See Fig.2) Fig.1 Fig.2 A B 1-8 (No.MB512) 3.1.2Removing the front panel assembly (See fig.3 to 5) (1) Remove the three screws C attaching the front panel as- sembly from bottom side. (See Fig.3) (2) Remove the screw D attaching the wire to power supply board. (See Fig.5) (3) Release the hook a of bottom side and hook b of both side of front panel assembly. (See Fig.4 and 5) Fig.3 Fig.4 Fig.5 C a b D CN101 CN421 CN422 (No.MB512)1-9 3.1.3Removing the power supply board (See Fig.6) CAUTION: When remove the power supply board, do not touch the capacitor (C905) because it keep voltage. (1) Disconnect the parallel wires from connectors CN101, CN421 and CN422 on the main board. (2) Disconnect the power cord connector CN901 on the power supply board. (3) Remove the four screws E attaching the power supply board. (4) Release the power supply board from fastener. Fig.6 CN901 fastener CN401 CN403 CN404 C905 EE E 1-10 (No.MB512) 3.1.4Removing the DVD mechanism assembly (See Fig.7 and 8) (1) Disconnect the card wires from connector CN405, CN411, CN412, CN413 and CN414 of main board. (See Fig.7) (2) Remove the two screws F attaching the DVD mechanism assembly from bottom cover. (See Fig.8) (3) Press the hook c and slide out the DVD mechanism for di- rection the arrow. (See Fig.8) Fig.7 Fig.8 CN414 CN413 CN411 CN412 CN405 c F (No.MB512)1-11 3.1.5Removing the fan (See Fig.9) (1) Disconnect the connector CN416 of main board. (2) Remove the two screws G attaching the fan to bottom cov- er. Fig.9 3.1.6Removing the tuner pack (See Fig.10 and 11) (1) Disconnect the card wire from connector CN652 of video board. (See Fig.10) (2) Remove the two screws H attaching the tuner pack from rear panel. (See Fig.11) Fig.10 Fig.11 G CN416 CN652 H 1-12 (No.MB512) 3.1.7Removing the video board (See Fig.12 and 13) (1) Disconnect the card wire from connector CN601 and CN651. (See Fig.12) (2) Remove the two screws J attaching the video board. (See Fig.12) (3) Remove the three screws