Kenwood-KAC7204-pwr-sm 维修电路原理图.pdf

SERVICE MANUALThis product uses Lead Free solder.This product complies with the RoHS directive for the European market. 2008-1 PRINTED IN JA PANB53-0612-00 (N) 519KAC-7204POWER AMPLIFIERStereo/BridgeablePower AmplifierBASS BOOSTLEVELdBLPFFREQUENCYHzHPFFREQUENCYHzINPUTSENSITIVITYVMINMAXOFFLPFFILTERLINE INLINE OUTHPFSP LEVEL INPUTSIGNAL SENSINGTURN-ONFUSE40AP .CONLEFTRIGHTBRIDGEDPOWER INSPEAKER OUTPUTAccessories(W01-1606-05)Screw & wrench key set(N99-1820-05)Connecting cord assy(E30-6145-05)19cmStereo/Bridgeable Power AmplifierM typeE,K typeDressing Panel(A21-6640-01): (E,K type)(A21-6641-01): (M type)Fuse (40A)(F52-0016-05)RadioFans.CN 收音机爱 好者资料库2KAC-7204BLOCK DIAGRAMCOMPONENTS DESCRIPTIONBassBoostSPOUTPUTISO-AMPISO-AMPSENS.VOLLINE INLR(0.25V)LRLINE OUTBassBoostMUTEATTPOWER AMPMUTEATTBATT.GNDP-CONPOWERON/OFFLC FILTERB15VAVRDC/DCCONFANAVRTHERMALDETOVERLOADDETDC-OFFSETDETFANLR(INV)L.P.FFREQH.P.FH.P.FFREQ(50200Hz)FREQLPF/OFF/HPFFREQ(40Hz)L+L-R-R+SIGNALDETECTORP-CONPRIORITY-0.83dB_ATT+6.85dB_AMP=6.0dB-0.5dB_ATT+16.4dB_AMP=15.9dB+15.8dB40Hz=18dB40A x1-0.83dB_ATT+6.85dB_AMP=6.0dBPOWER AMP40Hz=18dB(50200Hz)(50200Hz)IC2IC1IC7IC12IC7IC8IC8IC10IC11Q281,283Q282,284Q241Q242Q201.229Q202.226Q215-218,610Q611,612TH601,602,605Q1,2D5,6Q50,D50,52Q605Q604IC5Q609, 699 AUDIO UNIT (X09-8760-10)Ref. No.Application / FunctionOperation / Condition / CompatibilityIC1,2Isolation circuitIC5DC/DC converterIC6Temperature ATT controlATT2=on by pin1=H, ATT1=on by pin7=HIC7HPFIC8Buffer amplifi er, Rch inversion amplifi erIC10,11bass-boostIC12LPFQ1,16+15V power supplyQ2,17-15V power supplyQ38DC/DC switching FETQ914DC/DC switching FET drive TrQ15Temperature ATT reference power supplyQ50,51auto_pcon_offDisables operation of the auto_pcon circuit when the pcon_ is connectedRadioFans.CN 收音机爱 好者资料库3KAC-7204Ref. No.Application / FunctionOperation / Condition / CompatibilityQ201204Differential fi rst stage amplifi erQ205208Differential second stage amplifi erQ209,210Differential second stage current mirror Q211,213Temperature compensation TrQ215218Current limiterQ220,222227,229Power amplifi er fi nal TrQ241,242mute_TrMute_on when is ONQ251258Power amplifi er driverQ281,282ATT2_TrThe signal level becomes -3dB when is ONQ283,284ATT1_TrThe signal level becomes -1.5dB when is ONQ602Mute controlON when is pcon_offQ603,698Power supply for the mute_TrQ604SW14VPower supply for DC/DC_ICQ605Pcon controlON by pcon=HQ606Over voltage detectionTurn off Q605 when over voltage is detectedQ609Power supply for FANQ610Over current protectionQ611,612DC protectionQ613,614Latch circuit for DC protectionHold the protection operation while the DC protection is being operationalQ615,616Shock noise prevention circuitQ617,618Shock noise prevention circuit controlNO.ITEMALIGNMENT POINTMETHODALIGN FORNOTE1IDLECURRENTVR5 (Lch)VR6 (Rch)Connect a DC voltmeter between check land. Lch: Q223_emitter W148 Rch: Q224_emitter W212.5mVafter 5minutes from power onADJUSTMENTVR6VR5X09-876Q227Q223W148R245DC voltmeterLch 2.5mVQ224Q220RchLch+-W21R243DC voltmeterRch 2.5mV-+COMPONENTS DESCRIPTION4KAC-7204ABCDE1234567R608C129R5R609R35R6R610R612R615R49R626R640C14C52C600C617R9R10R15R16R18R22R24R34R58R147R606R613R614TH605C121R11R12R13R14R17R19R20R21R23R25R26R27R53R54R55R56R57R59R60R61R289R290R603R604R605R607R611R620R621R627R650R72W305W304W306W303W307W308W302W309W311W310W312W313R691W292W291W294W293W296W300W301C621W295W297W298W288R695R694R693R692R699R62B EB EB EB EB EBEB EBEB EBEB EB EBEB E18169C7C6-15V+15VBE+B-BSP-GNDSP-RBATT4.5VSW14V-15VSP-RSP-LTH-GNDSP-L+B-BW331W332W428W151W154W427W136W181W152W155W157W402W426W430W141W14W5L3W404W431W403W192W164W145W191W405W401W406W407W408W409W413W410W411W412W414W415W416W417W418W419W420W421W422W423W424W15W27C699W165W425W93W429W1531234567W174W173C10C11L1L2C1C16C8C9C17C19C20C50C51C601C602C603C13C15C18C24R7R8R28R29R30R155R273R245R275R616W129W147W146W119W118W4W182WW125W123W149W194W193W186W187W188W189W190W185W184W183W180W179W178W175W148W170W167W169W168W172W171W177W176W195W139W138W135W137W140W144W150W128W124W122W117W166W1W131W143W156W161W160W159W158W162W163W134W133W132W120W11W12W16W1EBE21EBSDGSDGSDGSDGSDGSDGEBEBQ698Q15Q9Q12D9D600D604D609Q10Q11Q51Q602Q605Q606D8D10D606D607Q13Q14Q50Q603P1D699D5Q223Q227D6Q604D1D2J3Q609Q3Q4Q5Q6Q7Q8D7D50D601D602D603D605D611Q211CN2IC5AUDIO UNIT X09-8760-10 (J76-0476-11)PC BOARD (FOIL SIDE VIEW)X09-8760-10Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. AddressIC15HIC85GQ22FQ74BQ123CQ172FQ2034HQ2084HQ2152HIC25HIC106FQ35BQ83BQ133CQ505EQ2044HQ2093HQ2165IIC53CIC116FQ44BQ93CQ143CQ515EQ2054GQ2103HQ2173HIC64FIC126HQ54BQ103BQ153CQ2014HQ2063HQ2112DQ2182HIC75GQ12FQ64BQ113BQ162FQ2024HQ2074GQ2133IQ2205I5KAC-7204Refer to the schematic diagram for the values of resistors and capacitors.JIHGF1234567W225C36C126C129C145C148R51R241R242R1R3R215R216R217R218R661C34C120C127C146C147R52R600R636R638R2R4R629R660R664R626R640C133C134C135C139C600C609C610C614C616C620R100R115R116R118R123R124R131R133R134R135R137R140R141R143R146R147R150R159R163R167R227R228R633R634R646R649R659R665R666R667R668TH601TH602C101C102C105C106C107C108C113C114C117C118C121C124C125C128C130C131C132C137C138C141C205C206C219C220C221C222C227C228C607C613C149R50R103R104R105R106R107R108R109R168R111R112R113R114R117R119R120R121R122R125R126R127R128R129R130R132R136R138R139R142R144R145R148R149R151R152R153R154R156R157R158R160R161R162R165R201R205R206R207R208R209R210R223R224R225R226R229R230R231R232R237R238R239R240R249R250R251R260R263R264R265R266R280R281R283R285R286R287R290R422R423R71R602R617R618W321R624R625R628R630R631R632R635R639R643R647R648R651R652R653R656R658R662R663R914R915R916R72W277W255R74R73W275R696W322W200W201R169W328W270W266W202W204W211W245W223W203W205W226W218W241W252W260W250W246W234W235W227W237W228W231W269W276W272W283W287W253W323W208W207W206W216W209W214W213W212W210W219W229W217W215W273W258W254W256W267W232W233W224W221W325W236W230W238W299W244W243W249W248W239W240W242W247W280W257W265W263W268W314W259W274W281W278W261W262W324W271W279W284W286W288W315W317W318W220W282R698C232C230C233C231C698W326W320R171R170W327R110W285C150B EB EB EB EB EB EB EB EB EB EB E41585841581458145814145814581458EBSENS.HPF-FLPF-FMAX-15V+15VOUTINEBRSP-LSP-RSP-R+B-B+BSP-R+15V-15VAGNDFAN+BAMP-IN-LAMP-IN-RRLPIN-GLPFSENSBBH/OFF/LHPFL10921LRRLED+BBB-GL-NF-B+BBEL+L-W13W136W79W97W141W142W400W55W73W59W70W431C223W63W127W196R697W69W199W95W93W330C2W21C3C611C612C615C606R202C57C58C4C5C50C51C140C203C204C207C208C225C226C263C264C604C605C608C618C619R622W23R203R204W25C103C104C109C110C111C112C115C116C119C122C123C136C143C201C202C209C210C211C212C213C214C215C216C217C218W30W31W33W24R101R102R277R274R278R211R212R213R214R219R220R221R222R233R234R235R236R243R246R247R248R257R258R261R262R271R272R275R276R279R282W29W32W34R619W129W1987698W115W26W104W121W53W125W37W123W28W38W42W114W56W58W65W67W66W72W75W62W60W90W6449W88W77W91W10048W87W22W20W35W36W48W47W46W45W52W51W89W74W86W41W40W43W44W111W110W109W108W113W112W83W82W81W80W85W843938W54W135W128W124W122W99W96W94W71W92W61W68W106W117W39W50W76W101W78W105W107W116W49W130W13143W134W133W132W120W14W10W197VR1VR2VR3VR4BEBELMAXEBEBEB21EBEBEBBEBEBEBEBEBEBEEBBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEEBEBBEBED101D102D3D4D608D609D614D104Q241Q242Q281Q282Q283Q284D52D229D253D254D255D295D296D617Q614Q615Q616Q617Q618D103J1J2Q699Q1Q220Q224Q251Q253Q256Q258Q2Q222Q225Q226Q229Q252Q254Q255Q257Q610Q609D615D624Q611Q612Q613D152D203D204D205D206D251D261D601D612D613D616Q16Q17Q201Q202Q203Q204Q205Q206Q207Q208Q209Q210Q213Q215Q216Q217Q218D610CN1S6D260IC1IC2IC7IC8IC10IC11IC12IC6VR5VR6Ref. No. AddressRef. No. AddressRef. No. AddressRef. No. AddressRef. No. AddressRef. No. AddressRef. No. AddressRef. No. AddressQ2222IQ2272DQ2523HQ2572GQ2844GQ6066DQ6133GQ6184FQ2232EQ2292GQ2533GQ2584HQ6025DQ6093FQ6144FQ6985EQ2244IQ2414GQ2543HQ2814GQ6035DQ6103GQ6154GQ2252HQ2424GQ2552HQ2824GQ6045DQ6114FQ6164GQ2263IQ2513GQ2565HQ2834GQ6056DQ6124GQ6174F6KAC-7204X09-8760-10 (1/3)ABCDE1234567-15.0V-13.9V12.5V15.0V15.0V-15.0V(X09-8760-10)D295D296Q202Q210D261Q204Q213Q282Q284Q281Q283Q242Q241Q201Q207Q206D152D251Q205Q208D254D253Q203Q209Q211D206D204Q216Q218D205D25Q217Q215FANCN2CN1INPUTSPJ2LINEARALINRLOUTLINED624D52D260D102D104D103IC2(1/2)(2/2)IC2J1D101IC1(1/2)(2/2)IC1D203LQ50D50Q51AUTO P CONISOATTMUTEFAN100C228132R265TP3RR28011K 10KR285R28610KR915R91610K 10KR28724KR91410u5047PC20210KR266 10K30KR20422KR24210KR218R216150R240150R260334.7KR2206.2KR212R210100R2641KC208C2064700PC26447u251.5KR2226.2KC212220P220P470VR610PC210R21422KR290100R226C21822PC21422P1.3KC21610u50C22747PTP4TP1R28124KR283R228TP9R206C204220P22KR22730KR20522K220PC203R20111KLR20322KC20110u50100100100u63R2081K1KR224R2071K1KR223C226470P470PC223C225C207C2054700PC26347u25R211R209100R2631K220PC211220P1.5KR2216.2KR2196.2KR225C21322PC21722P1.3KC21510u50470VR510PR21322KC209R289100CC2R23410010C222C22010R236100100R2R235C221C10C219100PR10510K0.01GND+B12+B2GND1RR+21RR-43RL-6587RL+109100K10u502.2KR121C6200.01FR+2R217R24110K150R215R2391504.7K33R2514.7K100K 10u502.2KR120FL-TP12FR-TP14R128C111C11210u50R129100K48TP11FL+TP1310u50C110100KR12710C109R122TP181000PC124TP60.01TP8R1021KC1021000PTP7C101R1011KR104C10410u5010KR114C10615PTP17R10610KR10310KC10310u50C114 15PR124 10KC134 100P710284R11010K54R112231R10812KTP2010K1KR100C1401000PC132 100PR126 10K6TP2280.010.01C36C34C698TP1610KC10515PR1134.7KTP15TP21212KR107R11110K3TP191R1097R125 10K6R123 10KC133 100PC11315PC131458100C2R23310u50C120C116C6113R636 18K10u5012R15310u50C13520KC115R15220KTP29TP51C5010KR69110u502.2KR50R5810u50C5110K0.047C521212FAN+BFAN+B+1+B+15V+15V15V+15V+B100R169100R168100R170100R171C1494700P4700PC15015V1R59 100K4.7KR6110KR601KR62TP78TP79TP10TP5TP2+11222223333347KAC-7204JIHGFX09-8760-10 (2/3)-13.6V-13.6V-47.3V10.0V15.0V+-B=47.3V(BATT=14.4V)52.6V(BATT=16V)15.0V-15.0V15.0V10.1V13.4V-2.1V1.7V5.0V4.3V14.2VATT2=-1.5dBATT1=-1.5dB15.0V2.8V2.8V1.6V-15.0V47.3V-47.3V47.3VQ223D206Q220D204Q256Q258Q224Q216Q218Q222Q225D205D255Q252Q255Q254Q226Q257Q217Q215Q229D615Q615Q617Q616Q618POPQ2D614Q611Q610Q612Q613D613Q614HPF(2/2)(1/2)D203Q251Q253Q227HPF 12dB/OCT,F=VR CONT (50-200Hz)(2/2)IC7IC8INVERTERRch : PHASE(2/2)HPF/OFF/LPFD4Q17D3Q16Q1D6Q4D5Q3IC11B.B 0+18d(2/2)LPF 50-200Hz 24dB/OCTIC12(1/2)IC7S6LPF(2/2)IC8INPUT SENS.(1/2)IC12IC10D603D699Q602D602D604D605Q605Q609D608D617D600D601D609Q603Q698Q12Q14Q604Q6Q8Q11Q10D10Q7Q5Q9IC6(2/2)Q13D612D616D7D9(1/2)IC6D610Q15NOISE MUTETHERMALATTDC/DCPOWER AMPLATCHFAN+BP-CMUTES2.2R51R6222.2K100P2.2C232R2432WC233R234100100PR2782.22.2C2221000PC2201000PR2305.1KR2383.6K100P3.6KR2325.1KR272R262470R250R2460.12WR2820.1R2484700.12WR2762.2R2580.12WR236100100R20210R235R274R2315.1KC2211000PC231100PR2493.6KR229C2191000PR271R2614705.1KR2373.6KR247R257R277R2792.22.20.12W0.12W2W0.1R245470R1550.12WC608100u10R668R6662R66310K4736KR660R66443K47KR6671R66536K47R66210KR62147KTP39R661TP46R6595.6KTP45C69947KC6160.11u50R65843K10C6070.01R617R620 47KC606100u1012KR62910KR63047KTP40C6130.01C6090.01R6342.2KTP50R6336.2KC6170.01R63212KTP49R63510KR63112KTP44C6100.01R149C1210.1R1199.1KTP32100C230R233R2732.2R2752.210.22C10810u5085ISO-L0.01C1208.2K0.1R13046710u502C116R11647KTP3156K9.1KC118R118R132GNDR11547K13C1260.01TP35R134C12247KVR1 50K(C)745896R131 56KR13347KC1470.014TP75C128 15PR138 62K5R13642354R135430R1374301710K856C1480.0110K978R141R14310K56KR600 22KC611C61510u50R636 18K10u50C547u25C61210u50R638 22KR722.2C347u25R2R4R74100C447u2510010KR602R71R639C247u2510K2.2R3R73R1103300u63R7101/2W3300u631000P16KC7R8101/2W33KR633KC9R5C6C81000P3900u16C182200PR1247C113900u16R30101/2WC10R114716KL3R142C1300.1R140150K65R147150K65TP47100.033R154R157R153R117 8.2K10u50ISO-RC117C1070.10.22TP30C1350.1520KC115R15220K10K23180K110u50231C119TP36R1587.5KC139R156TP2910KC137361524VR2 50K(C)9870.033R1607986326560.15R161100K9.1K47810u50C143VR3 10K(A)R139620R14523147KR163C1450.01C141R1627.5K0.01C146R606R60710R69233u35C601R69310KC6210.01R603R69918KR60818KR60933K100R60410KC60210u5010K4.7KC600 0.01C60410u50C60510u50R640R625620R6194.71.5KR6271K68022KR60533KR694R69510KR626R643R62410u5010u50R2110KR3510KC1547u25C138.2KR184.7KR5547R5747R1447R10R5447R94.7KR5647R1347TP71TP66R161.5KTP70R151.5KTP68R646 3K220K765TH601TH602TH605C6140.01TP73R6484.7K4.3KR696200R1910KTP88100010uC1C14R22 100K0.1R220KC1R1733KR34150R271KR2310K10u50R20330KR26R256.8KTP8310u50C58C57R64981432R647220KR522.2R6524.3K2.7KR6514.7KC24R6563.9KR6534.3KR6184.3KR53R650100K1KFAN+BFAN+BSW14.1VSW14.1VSW14.1VB14.4VB14.4VB14.4V+15V+BB+15V+15V+15V-15V+15V-15V+B+B+B+B15V15V15V15VBBTP25TP26TP27TP28TP38TP37TP34TP33TP41TP42TP59TP62?TRANSTP80TP81TP55TP58TP54TP53TP82TP8730KR610TP63TP64TP76TP43TP57TP56TPTP+111334448KAC-7204X09-8760-10 (3/3)ONMLK123456710.1V2.8V-1.0V14.2V3.7V0V0V12V3.3V0V-2.1V-1.0V0.1V0V4.5V5.0V14.2V5.0V14.2V14.2VIC5KAC-72042SA1376AA(L,K)Q209,210D102,254,295,296D10,52,101,253,255605,610-613,615,616,260,261,601-603,D7,50,152,203-206,251,Q252,254,255,257Q251,253,256,258Q222,225,226,229Q220,223,224,227D103,104D609D608D607D606D604,614D600,617D8,9624,699D6D5D3,4D1,2Q609Q604Q610-613Q211,213UDZS6.8BB30-1743-05:UDZS13BUDZS6.2BUDZS15BUDZS10BB30-1770-05:LM1MA142WA-GLM1MA142WK-G:1SS3551SS133:FRH10A20FCH10A20UDZS16B1N5406-TSC:2SC2235-F:2SC945AA(Q,P)2SA965-F:2SD18632SB1241:2SA1695NF2SC4468NFKTC3114-PH(A):Q50,603,614,615,Q17,201-204,217,218281-284,602,605,606,Q15,51,241,242,TL494IDRBA4560RFIC1,2,6-8,10-12Q3-8Q16,215,216Q205-208617,698Q13,14Q10,11Q9,12616,618Q2Q1IC5:STP60NF06FP:2SC1845-A(F,E)2SC3478AA(L,K)2SA1576A2SA992-A(F,E):DTA114EUA2SC4081:2SA15772SC4097:2SA1859ANF2SC4883ANF:(2/2)IC11B.B 0+18dB (VR) F=40Hz(2/2)IC11(1/2)BOOSTBASSIC10IC10(1/2)D604Q606D605Q605D606D611D607Q604D2D1P1SPOUTJ3D8GND LINESIGNAL LINEB LINEB LINEP-CONSW14VDC/DC CONTROLR1492400.1R146C136R1422400.14.7u502.2KR14443281150K657150K65710KR1482.2KC138100PR15047KVR4 10K(C)C129 0.01C1270.01C125 100PR4231KRR167 47KC1234.7u502.2KR15910KR151TP672R165 2.2K4831L1KR422R6131.5KTP69C60310u50TP72C190.047C200.0471/2W1/2WR6163.9KTP84TP85TP4821uH21uH21W4W5C110u25L1L2TP743LCH-21RCH-RCH+45LCH+P-CONFUSE=40ABATT 14.4V6GND7TP91TP90IN2+REFIN2-VCCC2E2OUTCTRL10KC1547u25DTC1000P10u50C16R2420KC17R4918C167GNDRTTP865CTR34150R26100KR256.8KP83IN1-34FBACK12IN1+9E110111213141615TP89B14.4V+15VSW14.1V-1SW14.1V-1+15V-15V21354786915V10R2810R29R614 6.8KR615 3.9K3.6KR61130KR6103.6KR612TP61TP60+1133CAUTION : For continued safety, re place safe ty critical com po nents only with manufacturers rec om mend ed parts (refer to parts list). Indicates safety critical com po nents. To reduce the risk of electric shock, leakage-cur rent or re sis tance mea sure ments shall be carried out (ex posed parts are ac cept ably in su lat ed from the supply cir cuit) be fore the ap pli ance is returned to the customer. DC voltages are as measured with a high impedance volt me ter. Val ues may vary slight ly due to vari a tions between in di vid u al in stru- ments or/and units.BCE2SA965-F2SA992-A2SC1845-A2SC2235-F2SA1576A2SC4081DTA114EUA9KAC-7204321BA(X09-876)J1J2J3VR4VR2VR1VR3F1Bundled to thetransistor.Bundled to thetransistor.714211266Bx21205DAx58109EEABCDEFGYZ?2.6x13M4x8?3x10?3x6?3x8?3x16?3x10M6 AUM4 AU: N09-6365-05: N09-6726-05: N80-