JVC-THL1A-dms-sm 维修电路原理图.pdf

SERVICE MANUALCOPYRIGHT 2007 Victor Company of Japan, LimitedNo.MB6232007/7DIGITAL MEDIA SYSTEMMB62320077 SERVICE MANUALTH-L1A, TH-L1US, TH-L1UB, TH-L1UJ, TH-L1UG, TH-L1UNCOPYRIGHT 2007 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 CONTENTS1PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-42SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-53DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-54ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-145TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14AX-THL1SP-THL1WSP-THL1FSP-THL1FSP-THL1CSP-THL1SSP-THL1SRadioFans.CN 收音机爱 好者资料库1-2 (No.MB623)SPECIFICATIONCenter unit* Corresponding to Linear PCM Dolby Digital and DTS Digital Surround (with sampling frequency - 32 kHz 44.1 kHz 48 kHz)Output powerFront/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.Audio sectionAnalog InputVIDEO 1 IN,VIDEO 2 IN,VIDEO 3500 mV/50 k Digital Input*VIDEO 1, VIDEO 3-21 dBm to -15 dBm (660 nm 30 nm)VIDEO 20.5 V(p-p)/75 Video sectionVideo SystemNTSC/PALHorizontal Resolution500 linesSignal-to-Noise Ratio60 dBVideo output level Composite1 V(p-p)/75 S-video-Y1 V(p-p)/75 S-video-CNTSC0.286 V(p-p)/75 PAL0.3 V(p-p)/75 Component(Interlace/Progressive)Y1 V(p-p)/75 PB/PR0.7 V(p-p)/75 HDMIHDMI InputVIDEO 1 IN, VIDEO 2 INHDMI OutputMONITOR OUTMax capability1920 1080 at 60 Hz / Deep color 4:4:4 / color depth 24 bit.USB storageUSB specificationCompatible with USB 2.0 Full SpeedCompatible deviceMass Storage ClassCompatible file systemFAT16, FAT32Bus power supply5 V/500 mASpeaker impedanceFront and Surround3 to 16 Center and Subwoofer4 to 16 GeneralPower RequirementsFor HongKongAC 220 V , 50 HzFor AustraliaAC 240 V , 50 HzFor other countriesAC 110 V - 240 V , 50/60 HzPower supply to iPod5 V/500 mAPower Consumption50 W (at operation)1.5 W (in standby mode)Dimensions (W H D)118 mm 276 mm 246 mmMass2.9 kgRadioFans.CN 收音机爱 好者资料库(No.MB623)1-3Subwoofer (SP-THL1W)Front speakers (SP-THL1F)Center speaker (SP-THL1C)Surround speakers (SP-THL1S)Designs & specifications are subject to change without notice.Type1-way Bass-Reflex Type (Magnetically-Shielded Type)Speaker16 cm cone 1Power Handling Capacity100 WImpedance4 Frequency Range30 Hz to 1.5 kHzSound Pressure Level84 dB/WmDimensions (W H D)266 mm 270 mm 157 mmMass2.9 kgTypeFull-Range Bass-Reflex Type (Magnetically-shielded Type)Speaker6.5 cm cone 1Power Handling Capacity40 WImpedance3 Frequency Range90 Hz to 20 kHzSound Pressure Level77 dB/WmDimensions (W H D)100 mm 104 mm 105 mmMass0.42 kg eachTypeFull-Range Bass-Reflex Type (Magnetically-shielded Type)Speaker6.5 cm cone 1Power Handling Capacity100 WImpedance4 Frequency Range90 Hz to 20 kHzSound Pressure Level77 dB/WmDimensions (W H D)100 mm 104 mm 105 mmMass0.42 kgTypeFull-Range Bass-Reflex TypeSpeaker6.5 cm cone 1Power Handling Capacity40 WImpedance3 Frequency Range90 Hz to 20 kHzSound Pressure Level76 dB/WmDimensions (W H D)100 mm 104 mm 105 mmMass0.5 kg each1-4 (No.MB623)SECTION 1PRECAUTION1.1Safety 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 aLeakage 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 0.15F 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 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.). 1.2Warning(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.1.3CautionBurrs 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.1.4Critical 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.MB623)1-5SECTION 2SPECIFIC SERVICE INSTRUCTIONSThis service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.SECTION 3DISASSEMBLY3.1Main body3.1.1Removing the SIDE PANEL (See Fig.1, 2)(1) Remove the nine screws A attaching the SIDE PANEL.(See Fig.1)(2) Remove the three screws B attaching the SIDE PANEL.(See Fig.2)Fig.1Fig.2AABBB1-6 (No.MB623)3.1.2Removing the FRONT PANEL assembly (See Fig.3, 4)(1) Remove the two screws C attaching the both side ofFRONT PANEL assembly. (See Fig.3)(2) Disengage the six hooks a engaged both side of FRONTPANEL assembly. (See Fig.3)(3) Disconnect the card wire from MAIN BODY connected toconnector CN860 of the FL BOARD assembly. (See Fig.4)Fig.3Fig.4Chook a(both side)CN860(No.MB623)1-73.1.3Removing the TOP CHASSIS (See Fig.5 to 8)(1) From the back side of main body, remove the two screwsD attaching the TOP CHASSIS. (See Fig.5)(2) From the top side of main body, remove the one screw Eattaching the TOP CHASSIS. (See Fig.6)(3) From the right side of main body, remove the four screwsF attaching the TOP CHASSIS. (See Fig.7)(4) From the front side of main body, remove the three screwsG attaching the TOP CHASSIS. (See Fig.8)Fig.5Fig.6Fig.7Fig.8DDEFFFFGGG1-8 (No.MB623)3.1.4Removing the HDMI assembly (See Fig.9, 10)(1) Disconnect the card wire from HDMI assembly connectedto connector CN901 of the VIDEO 2 BOARD assembly.(See Fig.9)(2) Remove the two screws H and three screws J attaching theHDMI BOARD assembly. (See Fig.10)Fig.9Fig.10CN901HHJJJ(No.MB623)1-93.1.5Removing the VIDEO 2 BOARD assembly (See Fig.11, 12)(1) Disconnect the card wire from VIDEO 2 BOARD assemblyconnected to connector CN905 of the MAIN BOARD as-sembly. (See Fig.11)(2) Remove the two screws K attaching the VIDEO 2 BOARDassembly. (See Fig.12)Fig.11Fig.123.1.6Removing the HEAT SINK (See Fig.13)(1) Remove the three screws L attaching the HEAT SINK.Fig.13CN905KKL1-10 (No.MB623)3.1.7Removing the POWER BOARD assembly (See Fig.14 to 17)(1) Remove the four screws M attaching the POWER BOARDassembly. (See Fig.14)(2) Remove the one screw N attaching the DUMMY BOARD.(See Fig.15)(3) Disconnect the connector wires from POWER BOARD as-sembly connected to connector CN200, CN201 andCN202 of the MAIN BOARD assembly. (See Fig.16)(4) Lift up the POWER BOARD assembly with POWERCORD, and then disconnect the POWER CORD from con-nector CN101 of the POWER BOARD assembly. (SeeFig.17)Fig.14Fig.15Fig.16Fig.17MMMMNCN200CN201CN202CN101(No.MB623)1-113.1.8Removing the REAR PANEL (See Fig.18 to 20)(1) Disconnect the connector wire from FAN connected to con-nector CN209 of the MAIN BOARD assembly. (See Fig.18)(2) Remove the two screws P attaching the SPEAKER TER-MINAL. (See Fig.19)(3) Remove the one screw Q attaching the VIDEO 1 jack. (SeeFig.19)(4) Remove the one screw R attaching the AUDIO jack. (SeeFig.19)(5) Remove the two screws S attaching the VIDEO jack. (SeeFig.19)(6) Remove the two screws T attaching the COMPONENTjack. (See Fig.19)(7) Remove the two screws U attaching the REAR PANEL.(See Fig.19)(8) Disengage three hooks b engaged top and bottom side ofREAR PANEL. (See Fig.20)Fig.18Fig.19Fig.20CN209PQRSTUUhook b(Top side)(Bottom side)1-12 (No.MB623)3.1.9Removing the DSP BOARD assembly (See Fig.21, 22)(1) Disconnect the card wire from DSP BOARD assembly con-nected to connector CN203, CN204 and CN206 of theMAIN BOARD assembly. (See Fig.21)(2) Disconnect the connector wire from DSP BOARD assem-bly connected to connector CN205 and CN320 of the MAINBOARD assembly. (See Fig.21)(3) Remove the two screws V attaching the DSP BOARD as-sembly. (See Fig.22)Fig.21Fig.22CN203CN204CN320CN205CN206VV(No.MB623)1-133.1.10 Removing the MAIN BOARD assembly (See Fig.23, 24)(1) Remove the one screw W attaching the BRACKETBOARD. (See Fig.23)(2) Remove the four screws X attaching the JACK BRACKET.(See Fig.24)(3) Remove the one screw Y attaching the MAIN BOARD as-sembly. (See Fig.24)(4) Remove the four screws Z attaching the MAIN BOARD as-sembly. (See Fig. 24)Fig.23Fig.243.1.11 Removing the FRONT BOARD assembly (See Fig.25)(1) Remove the eight screws A attaching the FRONT BOARDassembly.Fig.25WXXZZYZZAAAAAAAA1-14 (No.MB623)SECTION 4ADJUSTMENT4.1EXTENTION CABLEWhen do the operation check or do the confirm SPECIAL MODE, please use the extention cables connect to Main amp board andPower supply board.1. EXTTHL1-7P 2 pcs2. EXTTHL1-6P 1 pc4.2SPECIAL MODESECTION 5TROUBLESHOOTINGThis service manual does not describe TROUBLESHOOTING.MODE NAMECODEFUNCTIONCOLD STARTPOWER + STOP + 02 times receive the code when P.OFF condition, COLD SET indicate on FL displayduring 3 seconds, after temporaly P.ON operation. And the indication finished, go to P.OFF mode. Then COLD START operation should start by AC plug ON/OFF.ALL FL lightingPOWER + STOP + 1Receive the code when P.ON condition,1. LED turn on one by one. STANDBY-VIDEO1-VIDEO2-VIDEO3-iPod-USB-ILLUMINATION2. FL lights up all of segment. 3. VOLUME control by remocon (VOL+/VOL-), should be high speed mode until P.OFF.Temprature displayPOWER + STOP + 2POWER and AMP part temprature is displayedError histryPOWER + STOP + 3It is displayed safety condition.It can use only p.off condition. There are below kainds.SAFETY REG, SAFETY IPOD, SPEAKER DC DETECT, POWER TEMPERATURE,AMP TEMPERATURE, SAFETY LINE, SAFETY HDMI,S AFETY FAN,SAFETY P.AMP SD,S AFETY P.AMP OTWVersion displayPOWER + STOP + 10Receive the code when P.ON condition,1. Indicate Syscon version Syscon version:SC # $ (#:Sys version,$:Sys ROM correction)2. Indicate Unit version Unit version:BE %(%:Unit version)3. Indicate destination and chip select Destination, Chip select:$ % ($:sys destination , %:chip select L1orL11) Each display during 5 seconds temporary. Curret volume valueVolume down displayPOWER + STOP + 10Receive the code when P.ON condition, Indicate volume down cause by safety4.(No.MB623)1-15(No.MB623)VPTPrinted in JapanVictor company of Japan, LimitedAudio/Video Systems category 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan3-1PARTS 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) (Except TH-L1UJ) Packing materials and accessories parts list (Block No.M4) (Only TH-L1UJ)TH-L1A,TH-L1US,TH-L1UBTH-L1UJ,TH-L1UG,TH-L1UN3- 23- 6 3-163-18MB6233-2Exploded view of general assembly and parts listABCBDGCabefghpkPower boardMain boFL boardDHDMI boardWire guard boardWire stoper boardBlock No.MMM1586059616663674850514977454443762242525318419201414141562213445578891011121313697272707316171786858788433-3ADEGGHHEFFbcdbefhjmmnnppjkkcdaMain board DSPboardDigital in boardHDMI boardWire stoper boardMMg6265