JVC-HXD77UJ-cs-sm 维修电路原理图.pdf

SERVICE MANUALCOPYRIGHT 2006 Victor Company of Japan, LimitedNo.MB5562006/8COMPACT COMPONENT SYSTEMMB55620068HX-D77UJLead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade)TABLE OF CONTENTS1PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-32SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-53DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-64ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-145TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15CA-HXD77SP-HXD77SP-HXD77RadioFans.CN 收音机爱 好者资料库1-2 (No.MB556)SPECIFICATIONDesign and specifications are subject to change without notice.Amplifier section(CA-HXD77)Output PowerSUBWOOFERS125 W per channel, min. RMS, driven into 3 at 100 Hz with no more than 10% total harmonic distortion. (IEC 268-3) (at 230 V , 50 Hz)MAIN SPEAKERS90 W per channel, min. RMS, driven into 6 at 1 kHz with no more than 10% total harmonic distortion. (IEC 268-3) (at 230 V , 50 Hz)Audio input sensitivity/impedanceAUX400 mV/47 kUSBUSB Version 1.1Video input sensitivity/impedanceGAME/AUX(composite video)1 V(p-p)/75 Digital outputDIGITAL OUTPUT (OPTICAL) -21 dBm to -15 dBm (660 nm 30 nm)VIDEO OUTColor systemNTSC or PALVIDEO (composite)1 V(p-p)/75 S-VIDEOY (luminance) : 1 V(p-p)/75 C (chrominance, burst) : NTSC : 0.286 V(p-p)/75 C (chrominance, burst) : PAL : 0.3 V(p-p)/75 Speaker Terminals6 - 16 (main speakers)3 - 6 (subwoofers)Tuner sectionFM tuning range87.5 MHz - 108.0 MHzAM tuning range530 kHz - 1 710 kHz (at 10 kHz intervals)531 kHz - 1 710 kHz (at 9 kHz intervals)Disc player section Playable discDVD Video CD/VCD/SVCDCD-R/CD-RW (recorded in Audio CD/Video CD/Super Video CD/MP3/WMA/JPEG format)DVD-R/DVD-RW (recorded in DVD-Video or DVD-VR format)+R/+RW (recorded in DVD-Video or DVD-VR format)Dynamic range90 dBHorizontal resolution500 linesWow and flutterImmeasurableGeneralPower requirementAC 110 V - AC 240 V , 50/60 HzPower consumption90 W/ 150 VA (at operation)8 W (on standby: with power saving off-Normal mode)1 W (on standby: with power saving on-Eco mode)Dimensions (approx.) (W/H/D)175 mm 373 mm 411 mm (6 15/16 in. 14 11/16 in. 16 3/16 in.)Mass (approx.)5.8 kg (12.8 lbs)Speaker section(SP-HXD77)Type4-Way Front Twin Woofer (Magnetically Shielded Type)SpeakersSubwoofer16 cm (6 5/16 in.) cone 1Woofer16 cm (6 5/16 in.) cone 1Mid range7 cm (2 13/16 in.) cone 1Tweeter2 cm (13/16 in.) piezo 1Power handling capacity Subwoofer180 WMain speaker90 WImpedanceSubwoofer3 Main speaker6 Frequency rangeSubwoofer30 Hz - 1 000 HzMain speaker50 Hz - 20 000 HzSound pressure levelSubwoofer73 dB/WmMain speaker82 dB/WmDimensions (approx.) (W/H/D)296 mm 453 mm 343 mm (11 11/16 in. 17 7/8 in. 13 9/16 in.)Mass (approx.)7.5 kg (16.5 lbs) eachRadioFans.CN 收音机爱 好者资料库(No.MB556)1-3SECTION 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 TYPE1-4 (No.MB556)1.5Important for laser products1.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 operationcheck. WARNING LABEL and PRINT(No.MB556)1-5SECTION 2SPECIFIC SERVICE INSTRUCTIONSThis service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.1-6 (No.MB556)SECTION 3DISASSEMBLY3.1Main body3.1.1Removing the top cabinet (See Fig.1, 2)(1) From the back side of the main body, remove the fivescrews A attaching the top cabinet. (See Fig.1)(2) From the both side of the main body, remove the fourscrews B attaching the top cabinet. (See Fig.2.)(3) Remove the top cabinet from the main body while lifting therear section of the top cabinet in the direction of the arrow.(See Fig.2)3.1.2Removing the fan (See Fig.1, 3) Remove the top cabinet.(1) From the back side of the main body, remove the twoscrews C attaching the fan to the rear cabinet. (See Fig.1)(2) Remove the connector wire from the connector CN108 ofthe AMP board. (See Fig.3)(3) Take out the fan from the main body.Fig.1Fig.2Fig.3Top cabinetAACACTop cabinetBSMCN01SMCN02AMP boardSMPS boardCN102CN101CN103CN104 CN108(No.MB556)1-73.1.3Removing the AMP board (See Fig.3 to 5) Remove the top cabinet.(1) Disconnect the connector wire from the connector CN102of the AMP board. (See Fig.3)(2) Disconnect the card wires from the connectors CN101,CN103, CN104 of the AMP board. (See Fig.3)(3) Disconnect the connector wires from the connectorsSMCN01, SMCN02 of the SMPS board. (See Fig.3)(4) From the back side of the main body, remove the fivescrews D attaching the AMP board to the rear cabinet.(See Fig.4)(5) From the right side of the main body, remove the one screwE attaching the AMP board to the PCB holder. (See Fig.5)(6) Take out the AMP board from the main body.Fig.4Fig.5Rear cabinetD FFaaAMP boardPCB holderE1-8 (No.MB556)3.1.4Removing the SMPS board (See Fig.4, 6, 7) Remove the top cabinet and the AMP board.(1) From the back side of the main body, remove the twoscrews F attaching the rear cabinet. (See Fig.4)(2) From the top side of the main body, remove the one screwG attaching the earth wire on the bottom cabinet. (SeeFig.6)(3) Remove the two hooks a toward this side and remove therear cabinet. (See Fig.4)(4) From the reverse side of the rear cabinet, remove the fourscrews H attaching the rear cabinet. (See Fig.7)(5) Release the nine claws b. (See fig.7)(6) Take out the SMPS board from the rear cabinet.Fig.6Fig.7SMPS boardGBottom cabinetSMPS boardHHHHbbbb(No.MB556)1-93.1.5Removing the 5DVD mechanism assembly (See Fig.8 to 11) Remove the top cabinet, the rear cabinet and the AMP board.(1) From the top side of the main body, release the two clawsc and remove the PCB holder from the 5DVD mechanismassembly. (See Fig.8)(2) From the top side of the main body, remove the two screwsJ from the main body. (See Fig.9)(3) From the both side of the main body, remove the twoscrews K and then remove the 5DVD mechanism assem-bly from the main body in the direction of the arrow. (SeeFig.10)(4) From the top side of the 5DVD mechanism assembly, re-move the four screws L and remove the 5DVD mechanismassembly and the deck holder. (See Fig.11)Reference:When removing the doors, release the claws d of the doorsand then remove the five doors from the 5DVD mechanism as-sembly. (See Fig.11)Note:When releasing the claws d, take care not to break them. (SeeFig.11)Fig.8Fig.9Fig.10Fig.11PCB holder5DVD mechanism assemblycJJ5DVD mechanism assemblyKFront cabinet assemblyLL5DVD mechanism assemblyDeck holderddL1-10 (No.MB556)3.1.6Removing the front cabinet assembly (See Figs.12 to 14) Remove the top cabinet, the rear cabinet, the AMP board and5DVD mechanism assembly.(1) From the top side of the main body, remove the one screwM attaching the earth wires on the bottom cabinet. (SeeFig.12)(2) From the both side of the main body, remove the twoscrews N attaching the front cabinet assembly. (SeeFig.13)(3) From the both and bottom side of the main body, disen-gage the two hooks e and one hook f and remove the frontcabinet assembly from the main body in the direction of thearrow. (See Fig.13, 14)Fig.12Fig.13Fig.14MFront cabinet assemblyBottom cabineteNFront cabinet assemblyBottom cabinet(both side)Front cabinet assemblyf(No.MB556)1-113.1.7Removing the front VFD board (See Fig.15) Remove the top cabinet, the rear cabinet, the AMP board,5DVD mechanism assembly and the front cabinet assembly.(1) From the inside of the front cabinet assembly, remove thefour screws P attaching the front VFD board.(2) Take out the front VFD board from the front cabinet assem-bly and disconnect the card wire from the connectorFW102 on the forward side of the front VFD board.Fig.15PFront cabinet assemblyFront VFD boardFW102P1-12 (No.MB556)3.1.8Removing the front key board (See Fig.16, 17) Remove the top cabinet, the rear cabinet, the AMP board,5DVD mechanism assembly, the front cabinet assembly andthe front VFD board.(1) From the inside of the front cabinet assembly, remove theseven screws Q attaching the front key board. (See Fig.16)(2) Release the two claws g and the four claws h and then re-move the front key board from the front cabinet assembly.(See Fig.16)(3) Remove the knobs from the front side simultaneously. (SeeFig.17)(4) Take out the front key board while lifting it from the frontcabinet assembly little by little.3.1.9Removing the phone board (See Fig.16) Remove the top cabinet, the rear cabinet, the AMP board,5DVD mechanism assembly and front cabinet assembly.(1) From the inside of the front cabinet assembly, remove thethree screws R attaching the phone board.(2) Take out the phone board from the front cabinet assembly.Fig.16Fig.17hg QRFront key boardPhone boardQFront cabinet assemblyKnob(No.MB556)1-133.1.10 Removing the jog LED board, volume LED board and USB LED board (See Fig.18) Remove the top cabinet, the rear cabinet, the AMP board, the5DVD mechanism assembly, the front cabinet assembly, thefront VFD board and the front key board.(1) From the front side of the front key board, release the tenclaws j and remove the jog LED board, the volume LEDboard and the USB LED board from the front key board.(2) Disconnect the wires from the connectors FW202, FW203,FW204 of the front key board.(3) Take out the jog LED board, volume LED board and USBLED board from the front key board.Fig.18FW204jjjjjF