JVC-SPDWF10-sub-sm 维修电路原理图.pdf

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1、SERVICE MANUALCOPYRIGHT 2004 Victor Company of Japan, LimitedNo.MB2512004/6POWERED SUB WOOFERMB25120046SP-DWF10TABLE OF CONTENTS1PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-32SPECIFIC SE

2、RVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-53DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-64ADJUSTMENT .

3、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-95TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10Are

4、a suffixJ - U.S.A.A - AustraliaE - Continental EuropeUS - SingaporeUF - ChinaUP - KoreaUT - TaiwanUX - Saudi ArabiaUJ - U.S.MilitaryRadioFans.CN 收音机爱 好者资料库1-2 (No.MB251)SPECIFICATIONDesign and specifications are subject to change without notice.TypePowered Subwoofer Bass-reflex type (magnetically sh

5、ielded type)Speaker16.0 cm cone 1 (6-5/16)Frequency Range32 Hz 200 HzImpedance4 Input terminalsINPUT (LOW-LEVEL)Power requirementsAC 120 V , 60 HzOutput power of built-in amp100 W (45 Hz, 4 , 10 % THD)Power Handling Capacity25 WDimensions (W H D)185 mm 374 mm 345 mm (7-5/16 14-3/4 13-5/8)Mass8.86 kg

6、 (19.6 lbs)RadioFans.CN 收音机爱 好者资料库(No.MB251)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

7、 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. A

8、ny 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 charac

9、teris-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-vi

10、ce 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 S

11、ervice 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

12、 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 prod

13、uct (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 Cur

14、rent 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 in

15、to 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. Mo

16、ve 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

17、 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 relevantsafe

18、ty 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 c

19、ase 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

20、 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)150

21、0 10W0.15 F AC TYPE1-4 (No.MB251)1.5Importance administering point on the safetyCaution: For continued protection against risk of fire,replace only with same type 3 A/125 V for F901. This symbol specifies the type of fast operating fuse.Precaution: Pour la protection continue contre lesrisques dince

22、ndie, remplacer uniquement par lememe type: fusible 3 A/125 V pour les F901. Ce symbole specifie le type de fusible a action rapide. Power switch boardF9001(No.MB251)1-5SECTION 2SPECIFIC SERVICE INSTRUCTIONSThis service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.1-6 (No.MB251)SECTION 3DI

23、SASSEMBLY3.1Removing the Amplifier assembly (See Figs.1 and 2)(1) From the back side of the main body, remove the elevenscrews A attaching the amplifier assembly. (See Fig.1.)(2) Take out the amplifier assembly from the main body.(3) Disconnect the wire connector from the back side of theamplifier a

24、ssembly. (See Fig. 2.)(4) Disconnect the speaker wire from the speaker terminal.(See Fig.2.)3.2Removing the back panel (See Figs.1 to 3)(1) From the back side of the main body, remove the elevenscrews A attaching the amplifier assembly. (See Fig.1.)Reference:Remove the amplifier assembly from the ma

25、in body asrequired. (See Fig.2.)(2) Remove the five screws B attaching the back panel. (SeeFig.3.)Fig.1Fig.2Fig.3AAAAmplifier assemblyAAAmplifier assemblySpeaker terminalWire connectorBB(No.MB251)1-73.3Removing the power cord (See Figs.4 and 5) Prior to performing the following procedures, remove th

26、e backpanel.(1) Remove the two screws C attaching the bracket a. (SeeFig.4.)(2) Pull out the bracket a toward you.(3) Disconnect the power cord from the connector CN901 onthe power switch board. (See Fig.5.)3.4Removing the amplifier board assembly (Amp board,volume board, switch board) (See Figs.5 a

27、nd 6) Prior to performing the following procedures, remove the backpanel and the power cord. Remove the amplifier assembly from the main body as re-quired. (See Figs.1 and 2.)(1) Remove the three screws D attaching the bracket b. (SeeFig 5.)(2) Disconnect the wire from the connectors CN102 andCN503

28、on the amp board. (See Fig.5.)(3) Remove the amplifier board assembly from the connectorsCN951 and CN952 on the regulator board. (See Fig.6.)(4) Take out the amplifier board assembly.3.5Removing the power supply board assembly (Regula-tor board, power switch board) (See Fig.6) Prior to performing th

29、e following procedures, remove the backpanel, power cord and amplifier board assembly. Remove the amplifier assembly from the main body as re-quired. (See Figs.1 and 2.)(1) Remove the screw E attaching the bracket c. (See Fig.6.)(2) Remove the two screws F and four screws G attaching theregulator bo

30、ard.(3) Take out the power supply board assembly.Fig.4Fig.5Fig.6Bracket aPower cordCCSwitch boardBracket bAmp boardVolume boardCN901CN503CN102DDPower switch boardRegulator boardPower switch boardBracket cCN951CN952GGEF1-8 (No.MB251)3.6Removing the net assembly (See Fig 7)(1) From side of the main bo

31、dy, insert the tip of the flat-bladedscrewdriver or similar tool into the space between the mainbody and net assembly, and lift the net assembly little bylittle to remove. (See Fig 7)Note:To prevent damaging the net assembly and main body, insertcushioning plates etc. and below the tip of the flat-b

32、ladedscrewdriver or similar tool.From right side of the main body, release the eight joints d, andtake out the net assembly from the main body. (See Fig 7)Fig.73.7Removing the speaker. (See Fig 8 and Fig 9) Prior to performing the following procedures, remove the netassembly.(1) Remove the six screw

33、s H attaching the speaker. (Fig 8)(2) Take out the speaker from the main body.(3) Disconnect the wires from the terminal of the speaker. (SeeFig 9)Fig.8Fig.9Net assemblyFlat-bladedscrewdriver,etc.Cushioningplate,etc.Main bodyHHJoint d (eight joints)SpeakerTerminalMain body(No.MB251)1-9SECTION 4ADJUS

34、TMENTThis service manual does not describe ADJUSTMENT.1-10 (No.MB251)SECTION 5TROUBLESHOOTINGThis service manual does not describe TROUBLESHOOTING.(No.MB251)1-11(No.MB251)AV & MULTIMEDIA COMPANY AUDIO/VIDEO SYSTEMS CATEGORY 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,JapanVictor Company of Jap

35、an, LimitedWPCPrinted in JapanSCHEMATIC DIAGRAMSNo.MB251SCH2004/6SP-DWF10Contents Block diagramStandard schematic diagramPrinted circuit boards2-12-22-3 to 4CD-ROM No.SML200406POWERED SUBWOOFERCOPYRIGHT 2004 Victor Company of Japan, Limited.Area suffixJ - U.S.A.A - AustraliaE - Continental EuropeUS

36、- SingaporeUF - ChinaUP - KoreaUT - TaiwanUX - Saudi ArabiaUJ - U.S.MilitaryIn 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

37、 nearby are critical for safety. (This regulation does not correspond to J and C version.)2-1Block diagramMAINPLUGPOWERCIRCUITAmp boardSwitch boardINPUTCN101+BSPEAKEROUTINMUTEMUTERY502W9001 to 4W9001 to 4IC104 1/2AUTO POWER ONIC951IC571 INV. Q5706IC505INV.IC506DRV. Q5006Q5007REDGREENINDICATORQ5902Q5

38、903Q5904Q5905REGULATOR+BLEDCN501CN503CN102CN861CN901CN505CN504CANCEL / ONIC501Amp.VR501IC502ComparatorOff setVR502 Carrier Freq.POWER- SUPPLYVolume boardPower switch boardRegulator boardIC104 2/2LED CONT.IC1011/2AMPIC102IC1031/2AMPIC1032/2AMPT9501TRANSCN951CN502IC503IC504DriverJ1012-2Parts are safet

39、y assurance parts.When replacing those parts makesure to use the specified one.Standard schematic diagramR1004C1011R1005R1003C1003C1004C1005R5732IC101IC101R5750C1010R1021R1020R1015R1017Q1002Q1001R1047R1046C1023Q5902IC104IC103Q5903K1001R1030R1031C1016S1001C1015R5023IC102C1028R1051C1029C1030R1053IC104

40、R1061CN952R1065Q5706Q1006CN103Q1007S9001C9005RY502IC103R1040C1020Q5713W9001R9001IC501IC502Q5001Q5002R5005IC503IC504R5013R5014R5011R5012R5021R5022R5007R5003VR501R5008Q5003R5027R5028C5015R5036D5003R5034D5905C5915C5913C5916C5914D5906Q5005IC505D5006D5005R5046R5045R5044R9529IC506Q5721R5048R5050R5049R5916

41、D5009D5010Q5006Q5007R5055R5056Q5708L5001CN503R5742Q5901R5901Q5722R5702D5703R5701CN102D5911CN504CN505Q1003Q5723R5743R5749R5720R1068Q5712R5721R5723D5706D5707R5729R5728D5710D5712Q5709Q5711R5718D1003D5704Q5707D1002Q5904Q5905L5904L5903L5901L5902C1014R1032IC571Q5715Q5716R5731Q5717Q5718Q5719R5733R5739D5912

42、Q5720F9001T9501EP952TH901D9001IC951D9506Q9504D9503D9504R9508W9001D9502D9501LF901LF902R9510D9509C9515W9002D9510C9507C9508K5001PC951D9511R9517R5746C9513Q9508D9512C9514Q9509Q9510D5717C5711CN861R9503R5915EP951R8601D8601D8602D5013R5059IC102C1013R1028R1044R1064W9002W9003W9004W9003W9004J1001R1023R1022R1048

43、R1002R1001C1002C1001C1009C1008R5024C5007R1050R1052C1027C1031Q1004D1001R1049R1054R1057R1056C1032R1059R1060C5706C5025R1055R1062C1034C1033R1016R9002R1067CN101CN501R1039C1012C1021C5022R5009R5017R5018C5005R5015R5016C5006R5010C5004C5001R5002R5001C5002R5006R1041C5008C5009R5026Q5004R5030R5029D5001D5002R5032

44、C5003R5020C5010C5011C5012C5013C5014D5004R5039R5035R5031R5038VR502R5037R5033R5025R5019IC591IC592R5043R5041R5040R5042C5017C5016C5018D5007C5020C5019D5008R5053R5054C5021D5011D5012CN951D5708CN502R5057C5903C5904C5901C5902C5918C5905D5901R5902C5906D5902C5702R5910C5026R1066D5907D5908R9528R5744D5716R5905D5903

45、C5909C5911R5906D5904C5910C5912C5704C5907C5908D5709C5705R5722R5727R5909R5724R5725R5726Q5714D5711D5713Q5710R5716R5717C5703R5719D5705R5715R5713R5714TH501D5909D5910R5911R5912C5710R5730R5734R5735R5736R5737R5738C5707C5708C5709D5714D5715R5740R5745CN901C9001C9002C9003C9004C9504D9505R9506R9505C9505R9527R9504

46、R5051C9503R9502R9501K9501C9502C9501D9507C9506C5917K5002C9509TH591C9510C9511C9512R9516TH592TH594TH593R5748R5747D5718R9518R9519R9520R9521R9522R9523R9526R9524R9525R5913R5914R5052R5058C5023C5024C1022R1025R5004R5060R5061R5062C5027C5028R506356k0.1522K56k10/5010/500.01100KHA17558AF-XHA17558AF-X220K0.154.7K

47、3.9K47472SC2412K2SC2412K100K47K1/502SA1037AKHA17558AF-XHA17558AF-X2SC2412KNQR0129-003X7.5K7.5K10/50QSW0834-0010.22100HA17558AF-X4.7/501M47p4.7/504.7kHA17558AF-X1MQGB2016K1-051002SC2412K2SA1037AKQGB2016J1-052SC2412KQSW1001-0010.01/275QSK0149-001HA17558AF-X68K0.00222SK303/3-4/-X100k/2WHA17558AF-XNJM31

48、1M-XE2SA1037AK2SC2412K10kTC74HC00AF-WTC74HC14AF-X4.7k4.7k10k10k4.74.713K10k5K10k2SA1037AK2.21k47p10k1SS13320K2.2MTZJ6.8B10/1610/1610/1610/16MTZJ6.8B2SA1514KBU4584BF-X1SS1331SS1338.2K8.2K56075K/1/4WIR2113S-XKRC104S-X10k2.2/1/2W22/1/4W22/1/4WMTZJ18BMTZJ18BIRFI540NIRFI540N6.8/1W6.8/1WKRC104S( D) QQR135

49、2-0012.22SD2395/EF/10/1/4WDTC144TKA10k1SS1331k1SS355QGB2016J1-11QGB2016K1-112SC2412K2SK303/3-4/-X2.2k100K2.2k100KRA104S47k220k1SS355-X1SS355-X68K33K1SS355-XMA3300/L/2SC2412K2SC2412K47k1SS1331SS355-X2SA1037AK1SS1332SC2412K2SA1037AKNQL114K-471XNQL114K-471X0.082680KTC74HC14AF-XKRA104S-XKRC104S-X10kDTC1

50、15EKA-XDTC115EKA-X KRC104S-X10K10k1SS355KRA104SQQS0172-001QAD0141-6R0RBV-606STR-F6676AG01Z2SC2412KAG01ZMTZJ20B22/1WAG01ZAW04QQR1360-001QQR1360-00175K/1/4WFML-G22S0.0033/250FML-G22S0.0047/1K0.0047/1KQQR1183-001ZPC123Y22MTZJ15A10k100K0.012SA1514KMTZJ15A0.012SA1514K2SC2412K1SS355-X0.22/2568022/1/4W220S