Kenwood KAC-819 Service Manual

Also see for KAC-819: Instruction manual Instruction manual

Contents

B C D E F G H I JA2435671R11K 10u50C3+1000PC110KR3R9 10K15PC6R10C11 1000PR16 1K5.6KR11R13150 2.2KR2568R152.2KR2656 732 130KR27C1215P30KR281000PC2R410K10u50C4+1KR22.2KR2292.2KR2282.2u50C9++C7+C10+C82.2u502.2u502.2u5051KR2351KR2251KR2451KR21R614.7K10u50C31+R62 47KC32 470P10KR186K1C5947u25+ 816KC58R1434701000PR144756423111910121315141631265478R162R161 13K33KR168C7410u50R16710KR165 10KC73 1u5010KR166R164 47KC72 100u10++91010u50+180KTH2TH1L24.7KR134R138 15022R136R1401.5K3300u50C51+SERVO+SP+SP-L+R-L-R+R163R71+R1374.7KR135R1411.5KR139 1502210K27KR5R627KC5 100PR7 15K1KR8 4123412344231234142315.6KR12150R14VR15K(A)7.5KR29C130.1R3012KR31150KR32120KR336.8K50K(C)VR2109 8C140.1R344.7KC15 0.04710KR35R3610 10u50+C161u50+C171u50+C181u50+C1910KR37R3820K1312 145.6KR411110u50+C2036KR4036KR3922KR4256 784.3KR4522u50+C22134224KR43300R440.22C212.2u50+C233.6KR46R50 300R49 1.1KR51 4.3KC24 100PR47 4.3K10u50C25+22KR524.3KR48R68 47K6.8KR63C35 15P C36 270PR69 4.7KR70 1K 1/2W2.2KR6747u25C34+100R640.01C33R183100KR18233R181180K1u50C76+R17816K47KR17916KR18010R174 R17230KR1732.7K75KR176R177 33K100R17510R119 R113R11147u25C67+R115C65 47u25+R1171022K2K2K33KR170100KR1711u50+C7512PC38150R73R661K1KR6547u25++10R120R11622K2KR114R11810R1122K47u25C68270PC396.8KR746.8KR75220VR31000PC401.8KR76150R71150R72510R7710R93220u50+C37100(NB)R79C661/2W10(NB)10(NB)R80R81R1031KR854.7(NB)4.7(NB)R874700PC61620R105100PC481KR101C624700PR106620R78100(NB)C47100PR8310(NB)10(NB)R82R104R1021K1K4.7(NB)4.7(NB)R86R88220R841/2W(NB)0.1 2WR890.1 2WR900.1 2WR92R910.1 2W1 21.5KR192W1.5KR172W330KR1872200PC5310 1/2WR13110 1/2WR1322200PC54+3300u50C521KR1941.5K 2WR201.5K 2WR181.2K 2WR193 R1691.2K 2W1KR160R1596.2K1/2W10KR1554.7KR1563.3KR151R154750R1533.3K3.3KR152R1584.7K10u50C69+C7010u50+OVERLOAD-INMID-VLATCHGNDAC OFF INRELAYVCCMUTE10KR22710KR2261000PC79100KR188L1C1GNDRTCTE1E2C2VCCCONT.DTFBI.INNI.INR.OUTI.INNI.INR14210K3900u16C56+4700PC5510 1/2WR133SIGMASERVO-SIGMA10KR107R1093.3KC631000PR1083.3KC641000PR11010K123421P-CON+BGND2.2KR157470 1/2WR964700PC422200PC434.7 1/2WR2244.7 1/2WR2250.1C770.1C781000u16C4610 1/2WR950.33C440.33C45FUSE122 1IC1Q26Q6Q1,2Q4110u50+C57Q3,4150KR18575KR184Q21-23Q24,25Q15,16 Q7-10 Q11-14Q37Q27,28Q29-32Q33-36Q38,39E1 CN1D1D3(1/4)IC1(2/4)IC1E2 CN2Q1D12Q41D26D25Q36 Q34D28Q30Q32J5LchRchJ1J2Q21D27Q35 Q33 Q31Q29D2D4(3/4)IC1 (4/4)IC1S1IC2(2/2)IC2(1/2)S2Q2Q23Q22D37Q24D24D23 D22D21D35Q19Q17Q25Q3Q4D5Q20Q18D36D6Q5Q6D9D11D7Q7Q15Q8Q9D10D16Q10D8Q12Q11 CN3Q44D34Q40 D29D30D32Q46Q45 D31D14D13D15D16D18D19D17D20Q27 Q28Q39Q38 J4J3D40D38IC1 : UPC4574CIC2 : NJM4565DIC3 : UPC494CIC4:UPC1237HAQ3,4 : 2SC2631(Q,R)Q5 : 2SA1123(Q,R)Q6 : 2SC4137(V,W)Q7,8 : 2SC2235Q9,10 : 2SA965Q11,12 : 2SC5101LB∗5Q13,14 : 2SA1909LB∗5Q15,24,27,28 : 2SC1845(F,E)Q17,19 : 2SC1627AQ18,20,39,44 : 2SA817AQ21,22,29,32,37,38,45: 2SC945(A) (Q,P)Q23,30,31,46 : 2SA733(A) (Q,P)Q33-36 : IRFIZ48NLF24D1-4,6-23,27,28,32-34,37,38,40 : 1SS131D24 : RD20JS(B)D25 : FML22S∗AD26 : FML22R∗AD29 : RD7.5JS(B)D31 : IN5406-MD35,36 : RD16JS(B2)D100 : B30-1613-05GND LINESIGNAL LINED101CN5WH1Q1,2,16,25,26,412SA992(F,E):Q40 : DTA124ESAINPUTSENSITIVITY FREQUENCYLPFINFRASONICOFF-15-25OFF-6-12BASS BOOSTINPUT BUFFERINFRASONIC FILTERISOLATE LPFPROTECTIONICQ26CLASS A INITIALCURRENT CIRCUITSTAGE CONSTANT-AVRTEMPERATURECOMPENSATIONCLASS AMIRRORCURRENTCIRCUITCLASS A INPUTAMPLIFIERDIFFERENTIALFINAL Tr. OVERCURRENTDETECTION CONTROLQ13Q14DC/DC CONVERTERCONTROL ICDISPLAYLED DRIVEAVRCLASS A TWO-STAGEAMPLIFIERDIFFERENTIALMUTINGCIRCUITCONNECTIONERRONEOUSAGAINSTPROTECTION CIRCUITCURRENTLIMITER CLASS BINITIAL STAGE FINALCLASS BRELAYDRIVEQ37P-CON INPUTPROTECTIONOVERCURRENTAGAINSTPROTECTION CIRCUITCONNECTIONERRONEOUSDC/DC CONVERTERDRIVEDC/DC CONVERTERSWITCHING FETD33CN4P-CONCONTROLIC3(X09-5260-10) (A/4)RCA INPUT(X09- ) (B/4)(X09- ) (C/4)SPEAKERLEVEL INPUTIC4(X09- ) (D/4)KAC-81922K22KKAC-819CAUTION: For continued safety, replace safety critical components only withmanufacturer's recommended parts (refer to parts list).Indicates safety critical components. To reduce the risk of electric shock,leakage-current or resistance measurements shall be carried out (exposedparts are acceptably insulated from the supply circuit) before the applianceis returned to the customer.1485NJM4565D18916UPC494C17814UPC4574C18UPC1237HA2SA11232SA733(A)2SA817A2SA9652SA9922SC1627A2SC18452SC22352SC26312SC945(A)E C BDTA124ESAECBE C B2SC4137•DC voltages are as measured with a high impedance voltmeter.Values may vary slightly due to variations between individualin struments or/and units.15.5V0V0V0V-15.5V0V0V0V0V0V0V 0V0V0V0V0V0V15.5V-15.5V0.01V0.65V-43.0V-5.0V0.075V-43.0V-2.1V-1.1V-0.53V1.1V43.0V43.5V-43.5V-0.75V0.57V 0.54V0.54V0.57V0.12V-0.13V-0.6V -0.56V-0.6V -0.56V45.0V-45.0V0V0V1.5V0V2.1V3.5V45.0V14.4V14.4V3.7V1.7V0.2V3.0V13.5V0V0V0V5.0V5.0V5.0V13.5V13.5V5.0V5.0V14.3V 14.4V0.4VB LINEB LINE