Jvc-THP-3-Service-Manual电路原理图.pdf

SERVICE MANUALCOPYRIGHT © 2008 Victor Company of Japan, LimitedNo.MB5122008/7DVD DIGITAL CINEMA SYSTEMMB51220087SERVICE MANUALTH-P5B, TH-P5E, TH-P5EN, TH-P5EV, TH-P3B, TH-P3E, TH-P3EN, TH-P3EV, TH-G10B, TH-G10E, TH-G10EN, TH-G10EVCOPYRIGHT © 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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-42 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-73 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-74 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-205 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-23(Only for TH-P5/TH-G10)TH-P3/TH-G10TH-P5SP-WP5XV-THP5SP-THP5CSP-THP5SSP-THP5FXV-THP3/XV-THG10SP-WP5/SP-THG10WSP-THP3C/SP-THG10CSP-THP3F/SP-THG10FSP-THP3S/SP-THG10S1-2 (No.MB512)SPECIFICATIONCenter unit (XV-THP5/XV-THP3/XV-THP10)Subwoofer (SP-WP5/SP-THG10W)Audio section Front/Surround 40 W per channel, RMS at 3 at 1 kHz, with 10 % total harmonic distortion.Center 100 W, RMS at 4 at 1 kHz, with 10 % total harmonic distortion.Subwoofer 100 W, RMS at 4 at 30 Hz, with 10 % total harmonic distortion.Video section Video System PALHorizontal Resolution 500 linesSignal-to-Noise Ratio 64 dB (Composite signal when “RGB“ is selected)Video output level Composite 1.0 V(p-p)/75 Y 1.0 V(p-p)/75 C 0.3 V(p-p)/75 RGB 0.7 V(p-p)/75 Only for XV-THP5 Component-Y 1.0 V(p-p)/75 Component-PB/PR 0.7 V(p-p)/75 USB storage USB specification Compatible with the USB 2.0 Full-SpeedCompatible device Mass Storage ClassCompatible file system FAT16, FAT32Bus power supply Max. 500 mATuner section Tuning Range FM 87.50 MHz to 108.00 MHzAM (MW) 522 kHz to 1 629 kHzGeneral Power Requirements AC 230 V , 50 HzPower Consumption 60 W (at operation)1.4 W (in standby mode)Dimensions (W × H × D) 435 mm × 70 mm × 308 mmMass 3.0 kgType Bass-Reflex TypeSpeaker 16 cm cone × 1Power Handling Capacity 100 WImpedance 4 Frequency Range 35 Hz to 200 HzSound Pressure Level 75 dB/W·mDimensions (W × H × D) 129 mm × 284 mm × 337 mmMass 3.1 kg(No.MB512)1-3Satellite speakers (For TH-P5)Satellite speakers (For TH-P3/TH-G10)Designs and specifications are subject to change without notice.Front speakers (SP-THP5F) Type 3-Way Bass-Reflex Type (Magnetically-shielded Type)Speaker 11.5 cm cone × 14 cm cone × 11.5 cm cone × 1Power Handling Capacity 40 WImpedance 3 Frequency Range 60 Hz to 20 000 HzSound Pressure Level 82 dB/W·mDimensions (W × H × D) 146 mm × 246.5 mm × 208 mmMass 2.2 kg eachCenter speaker (SP-THP5C) Type 1-Way Bass-Reflex Type (Magnetically-shielded Type)Speaker 6.5 cm cone × 2Power Handling Capacity 100 WImpedance 4 Frequency Range 90 Hz to 20 000 HzSound Pressure Level 79 dB/W·mDimensions (W × H × D) 250 mm × 85 mm × 91 mmMass 0.82 kgSurround speakers (SP-THP5S) Type 1-Way Bass-Reflex TypeSpeaker 6.5 cm cone × 1Power Handling Capacity 40 WImpedance 3 Frequency Range 90 Hz to 20 000 HzSound Pressure Level 72 dB/W·mDimensions (W × H × D) 79.5 mm × 147 mm × 88 mmMass 0.51 kg eachFront speakers (SP-THP3F/SP-THG10F)Type 1-Way Bass-Reflex Type (Magnetically-shielded Type)Speaker 6.5 cm cone × 1Power Handling Capacity 40 WImpedance 3 Frequency Range 90 Hz to 20 000 HzSound Pressure Level 75 dB/W·mDimensions (W × H × D) 92 mm × 99 mm × 95.5 mmMass 0.45 kg eachCenter speaker (SP-THP3C/SP-THG10C)Type 1-Way Bass-Reflex Type (Magnetically-shielded Type)Speaker 6.5 cm cone × 1Power Handling Capacity 100 WImpedance 4 Frequency Range 90 Hz to 20 000 HzSound Pressure Level 76 dB/W·mDimensions (W × H × D) 92 mm × 99 mm × 95.5 mmMass 0.45 kgSurround speakers (SP-THP3S/SP-THG10S)Type 1-Way Bass-Reflex TypeSpeaker 6.5 cm cone × 1Power Handling Capacity 40 WImpedance 3 Frequency Range 90 Hz to 20 000 HzSound Pressure Level 72 dB/W·mDimensions (W × H × D) 92 mm × 99 mm × 95.5 mmMass 0.48 kg each1-4 (No.MB512)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 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 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 havespecial 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 characteristics 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 recommended 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 for 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 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 line 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.). 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 0.15µF 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 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 designed 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 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 the 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 ( ), 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 part.AC VOLTMETER(Having 1000 ohms/volts,or more sensitivity)1500 10W0.15 F AC TYPE(No.MB512)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 (optical 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 being 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 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 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 tester's 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 the 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) 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 unit. Apply solder to the short land sections before the flexible wire is disconnected from the connecto on the servo board. (If the flexiblewire 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.1MConductive material(conductive sheet) or iron palate(caption)Anti-static wrist strapSolder short1-6 (No.MB512)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. 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 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 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 operationcheck. WARNING LABEL and PRINT(No.MB512)1-7SECTION 2SPECIFIC SERVICE INSTRUCTIONSThis service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.SECTION 3DISASSEMBLY3.1 Main body3.1.1 Removing the top cover (See Fig.1 and 2)(1) Remove the two screws A attaching the top cover of bothside. (See Fig.1)(2) Remove the five screws B attaching the top cover of rearside. (See Fig.2)Fig.1Fig.2AB1-8 (No.MB512)3.1.2 Removing 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 supplyboard. (See Fig.5)(3) Release the hook a of bottom side and hook b of both sideof front panel assembly. (See Fig.4 and 5)Fig.3Fig.4Fig.5CabDCN101CN421CN422(No.MB512)1-93.1.3 Removing the power supply board (See Fig.6)CAUTION:When remove the power supply board, do not touch thecapacitor (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 powersupply board.(3) Remove the four screws E attaching the power supplyboard.(4) Release the power supply board from fastener.Fig.6CN901fastenerCN401CN403CN404C905EEE1-10 (No.MB512)3.1.4 Removing 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 mechanismassembly 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.7Fig.8CN414CN413CN411CN412CN405cF