JVC-MXKC45-cs-sm 维修电路原理图.pdf

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1、SERVICE MANUALCOPYRIGHT 2006 Victor Company of Japan, LimitedNo.MB5502006/7COMPACT COMPONENT SYSTEMMB55020067MX-KC45E,MX-KC45EN,MX-KC45A,MX-KC45UW,MX-KC45UY,MX-KC45UJLead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade)TABLE OF CONTENTS1PRECAUTION. . . . . . . . .

2、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-32SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-53DISASSEMBLY . . . . . . . .

3、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-64ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-125TROUBLESHOO

4、TING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13CA-MXKC45SP-MXKC45SP-MXKC45RadioFans.CN 收音机爱 好者资料库1-2 (No.MB550)SPECIFICATIONDesign and specifications are subject to change without notice.AmplifierOutput Power

5、(IEC 268-3)155 W per channel, min. RMS, driven into 6 at 1kHz, with no more than 10% total harmonic distortion(DIN-3)125 W per channel, min. RMS, driven into 6 at 1kHz, with no more than 0.9% total harmonic distortionInput Sensitivity/Impedance (1 kHz)AUX INSpeaker terminals400 mV/50 k6 - 16 Phones3

6、2 - 1 k17 mW/ch output into 32 Cassette Deck Section Frequency Response : Type I (NORMAL) 63 Hz - 12 500 HzWow And Flutter0.15% (WRMS)CD PlayerCD Capacity3 CDsDynamic Range85 dBSignal-To-Noise Ratio85 dBWow And FlutterUnmeasurableTunerFM Tuner : Tuning Range87.50 MHz - 108.00 MHz87.50 MHz - 108.00 M

7、Hz (at AM9 kHz channel space)87.5 MHz - 108.0 MHz (at AM10 kHz channel space)AM Tuner : Tuning Range522 kHz - 1710 kHz522 kHz - 1 629 kHz (for Europe)531 kHz - 1710 kHz (at AM9 kHz channel space)530 kHz - 1710 kHz (at AM10 kHz channel space)UnitDimensions270 mm 307 mm 492 mm (W/H/D)MassApprox. 9.3 k

8、gSpeaker Specifications(each unit)Type3-way bass-reflex typeSpeaker UnitWoofer16 cm cone 1Mid5cm cone 1Tweeter2cm dome 1Power Handling Capacity160 WImpedance6 Frequency Range45 Hz - 22 000 HzSound pressure level87 dB/WmDimensions220 mm 324 mm 238 mm (W/H/D)MassApprox. 3.6 kgPower SpecificationsPower

9、 RequirementsAC 240 V , 50 Hz (for Australia)AC 230 V , 50 Hz (for Europe)AC 110 V-127 V/220 V-240 V , adjustable with voltage selector, 50 Hz/60 Hz (for Asia)Power Consumption165 W (power on mode)23 W (in Standby mode)1 W (in ECO mode)RadioFans.CN 收音机爱 好者资料库(No.MB550)1-3SECTION 1PRECAUTION1.1Safety

10、 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

11、 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

12、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 theprotecti

13、on 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 shad

14、ing 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

15、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

16、, 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,

17、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 th

18、e 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 sensiti

19、vityin 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 expo

20、sed 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 de

21、signed 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 replac

22、edby 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 reg

23、ard 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 thesa

24、me 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.MB550)1.5Important for laser products1.CLASS 1 L

25、ASER 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 op

26、en 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

27、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 LABE

28、LS 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.MB550)1-5SECTION 2SPECIFIC SERVICE INSTRUCTIONSThis service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.1-6 (No.MB550)SECTION 3DISASSEMBLY

29、3.1Main Body3.1.1Removing the metal cover (See Fig.1, 2)(1) Remove the two screws A and four screws B attaching themetal cover from both side of the main body. (See Fig.1)(2) Remove the six screws C attaching the metal cover fromback side of main body. (See Fig.2)3.1.2Removing the heat sink cover (S

30、ee Fig.2, 3)(1) Disconnect the connector wire from the fan connected toconnector CN603 of the amp board. (See Fig.3)(2) Remove the four screws D attaching the heat sink cover.(See Fig.2)3.1.3Removing the fan (See Fig.2)(1) Remove the four screws E attaching the fan.Fig.1Fig.2Fig.3ABB(both side)C EEC

31、CCDDDDECN601CN603aGG(No.MB550)1-73.1.4Removing the 3CD changer mechanism (See Fig.3 to 7)(1) Disconnect the card wire from amp board connected to theconnector CN601 of the main board. (See Fig.3)(2) Disconnect the card wire from the tuner pack connected tothe connector CN306 of the main board. (See

32、Fig.4)(3) Open the CD tray and remove the CD door.Caution:If the CD tray can not open at power to ON condition, ro-tate the gear and open the CD tray. (See Fig.5)(4) Disconnect the card wire connected to the connectorCN201 and CN303 of the main board. (See Fig.6)(5) Disconnect the connector wire con

33、nected to the connectorCN301 and CN302 of the main board. (See Fig.6)(6) Remove the two screws F attaching the 3CD changermechanism of back side of the main body. (See Fig.7)(7) Remove the four screws G attaching the 3CD changermechanism from both side of the main body. (See Fig.3, 4)Fig.4Fig.5Fig.6

34、Fig.7CN306QGGEAR (top view)CN303CN302CN301CN201HHHH F1-8 (No.MB550)3.1.5Removing the main board (See Fig.6, 8, 9)(1) Remove the six screws H attaching the main board. (SeeFig.6)(2) Disconnect the connector wire connected to the connectorCW3 of the motor board. (See Fig.8)(3) Disconnect the connector

35、 wire connected to the connectorof the traverse mechanism. (See Fig.8)(4) Solder the short land section of the CD pickup and then dis-connected the card wire from the main board connected tothe CD pickup. (See Fig.9)Caution: Solder the short land section of the CD pickup before discon-necting the ca

36、rd wire from the connector on the CD pickup.If the card wire is disconnected without attaching the sol-ders, the pickup may be destroyed by static electricity. When attaching the CD pickup, be sure to remove soldersfrom the short land section after connecting the card wire tothe connector on the CD

37、pickup.Fig.8Fig.9connector wireCW3traverse mechanismmotor boardshort land section(No.MB550)1-93.1.6Removing the tuner pack (See Fig.11)(1) Remove the two screws J attaching the tuner pack.3.1.7Removing the amp board (See Fig.10, 11)(1) Disconnect the connector wire from the front board con-nected to

38、 the connector CN202 of the amp board. (SeeFig.10)(2) Disconnect the connector wires from the power transform-er connected to the connector CN902 and CN903 of theamp board. (See Fig.10)(3) Remove the four screws K attaching the amp board. (SeeFig.11)(4) Remove the three screws L attaching the amp bo

39、ard. (SeeFig.11)3.1.8Removing the voltage selector board (See Fig.11)(1) Remove the two screws M attaching the voltage selectorboard.3.1.9Removing the rear panel (See Fig.11)(1) Remove the four screws N attaching the rear panel.Fig.10Fig.11CN202CN903CN902KKKLLLMNJ1-10 (No.MB550)3.1.10 Removing the f

40、ront panel assembly (See Fig.3, 4, 12, 13)(1) Disconnect the two earth wires from the bottom plate. (SeeFig.12)(2) Remove the one screw P attaching the front panel assem-bly from bottom side. (See Fig.13)(3) Remove the two screws Q attaching the front panel assem-bly from both side of the main body.

41、 (See Fig.4)(4) Disengage the hook a on the both side of the front panelassembly. (See Fig.3)Fig.12Fig.13earth wireP(No.MB550)1-113.1.11 Removing the cassette mechanism assembly (See Fig.14)(1) Remove the six screws R attaching the cassette mecha-nism assembly.3.1.12 Removing the front board (See Fi

42、g.14, 15)(1) Remove the seven screws S attaching the front board.(See Fig.14)(2) Disconnect the connector wire from the connector CN201of the front board. (See Fig.14)(3) Remove the main volume knob.(4) Remove the eighteen screws T attaching the front board.(See Fig.15)(5) Remove the one screws U at

43、taching the front board. (SeeFig.15)Fig.14Fig.15RRRRSSCN201UTTTT1-12 (No.MB550)SECTION 4ADJUSTMENTThis service manual does not describe ADJUSTMENT.(No.MB550)1-13SECTION 5TROUBLESHOOTINGThis service manual does not describe TROUBLESHOOTING.(No.MB550)Audio/Video Systems Category 10-1,1chome,Ohwatari-m

44、achi,Maebashi-city,371-8543,JapanVictor Company of Japan, LimitedVPTPrinted in JapanSCHEMATIC DIAGRAMSMX-KC45E,MX-KC45EN,MX-KC45AMX-KC45UW,MX-KC45UY,MX-KC45UJContentsBlock diagramsStandard schematic diagramsPrinted circuit boards2-12-22-17 to 21CD-ROM No.SML200607COMPACT COMPONENT SYSTEMNo.MB550SCH2

45、006/7COPYRIGHT 2006 Victor Company of Japan, Limited.Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade)CA-MXKC45SP-MXKC45SP-MXKC45In regard with component parts appearing on the silk-screen printed side (parts side) of the PWB diagrams, the parts that are printe

46、d over with black such as the resistor ( ), diode ( ) and ICP ( ) or identified by the mark nearby are critical for safety. 2-1Block diagramQ414 to Q419MECHACONTROLJOG KEYSCON1CN205ANT INDECK-APB-HEADTODECK-BR/P-HEADTOCASSETTEMECHANISMTOCD PICKUPTOSPINDLESLEEDTOCD MECHATRANSFORMER PWBTO AMPAC INTOHE

47、ADPHONECW202SPEAKEROUTTO PT PWBCW903TO PT PWBCW902AUX INAUX JACKTUNER LTUNER RCLK,CEDAT IN/OUTA/B SELBIAS-ONSOL-ASOL-BMOTOR-ONTAPE LTAPE RSENCEMLTMRD/MDATAMWR/MCKCD ONMOTOR-MUTEIN-SWCAM+LD M+LD M-XRSTDSP-SENSEDECINTMDOMADDRMD0 to MD7SDIN,SCLK,SENBREMOTE,P-CNTENCONDER1ENCONDER2KEY1,KEY2,KEY3PRE-AMP L

48、PRE-AMP RL OUTR OUTAUX LAUX RCD LCD RVOLUMEPT901TRANSFORMERIC702IC701CD RF AMPCN301CN302CN303CN701CN702CN703Q434,Q435BIAS OSCIC6012CHPOWER AMP.Q611MUTEQ612MUTECN202JK601CN903CN902IC80316MSDRAMIC804DIGITALSERVOIC301MCUIC202VFD DRIVERVFDIC201IR SENSORPT902BACKUP PTS901VOLTAGESELECTORCN902CN903CW903CW9

49、02MAINCN205AUXCW205AMPCN202HEAD PHONECW202IC401VOLUMEQ401 to Q410Q438A/B DECKEXCHANGEQ420,Q421VOL DATACN306TUNER PARKCN201CN601CW601CW201CW215CW203PHONE JACKUsed for Area suffix UW/UY/UJ2-2Parts are safety assurance parts.When replacing those parts makesure to use the specified one.Standard schemati

50、c diagramsS3GNDS3S1S2GNDS2S187654321CON - 2.5 - 8PCN2C601C6020.1U0.1U1N4003D6051N4003D6031N4003D60633(1 / 2W)-FRD6021N4003RF601R67233(1 / 4W)D6011N4003Q604KTB1366YQ6052SC3052C6040.1UR6014.7KC605C6074700 / 25R6051K100 / 25D607UZ12BSCC6080.1UC609100 / 16D608NM0.1UC6034.7KR101C1011000 / 25R10322K R1042