Kenwood-KAC-6403-Service-Manual 电路图 维修手册.pdf

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1、 2006-1 PRINTED IN JAPAN B53-0378-00 (N) 540 POWER AMPLIFIER KAC-6403 SERVICE MANUAL Screw washer (N09-4215-08) Panel (A64-3834-02) Heat sink (F01-3511-01) Screw set (N99-1587-05) Accessory (W01-1606-05) A ch FILTERB ch FILTERINPUT SELECTOR OFFLPFOFFHPF 1 0.5 0.3 0.2 2 5 3 4 MIN V MAX LINE IN INPUT

2、SENSITIVITY 1 0.5 0.3 0.2 2 5 3 4 MINMAX AchBch POWER INBRIDGED LEFTFUSE BATT.P.CONGND 25ARIGHTSPEAKER OUT POWERAMPLIFIER Fuse (25A) (F52-0014-05) Rear panel (A84-0410-02) Connecting cord assy (E30-6144-05) Screw washer (N09-6393-08) This product uses Lead Free solder. EXPLODED VIEW is on page 5. Ra

3、dioFans.CN 收音机爱 好者资料库 KAC-6403 2 BLOCK DIAGRAM +6dB0dB+29.5dB AMPLIFIER ISOLATION IC2 AMPLIFIER ISOLATION IC2 GAIN INPUT VR1 CONT. J1 R L LINE IN A J2 SPEAKER INPUT HPF 80Hz 12dB/OCT C151,153,R165,167 80Hz 12dB/OCT HPF C152,154,R166,168 MUTE 201,202 AMPLIFIER POWER 119-126 Q103-114, AMPLIFIER POWER

4、J9 SPEAKER R OUT A L AVR 15V Q3,4 CONVERTER L2 DC/DC OVER ROAD PROTECTION DC DETECT & Q115-118,215-218 CIRCUIT P.CON Q605 PROTECTION THERMAL TH1 P.CON BATTERY IC13 OVER VOLTAGE PROTECTION S2 S2 ISOLATION AMPLIFIER IC4 IC4 ISOLATION AMPLIFIER R LINE IN B L INPUT VR2 CONT. GAIN S1 S1 A-AB Ach Bch Q101

5、,102, 119-126 Q103-114, IC7 +1 -3dB ATT -3dB ATT IC7 +1 IC9 +1 IC9 -1 80Hz 12dB/OCT LPF+10dB IC5 S3 S3S3 S3 IC6 -3dB ATT +1 -3dB ATT -1 IC5 AMPLIFIER POWER R OUT B SPEAKER AMPLIFIER 219-226 Q203-214, POWER L 219-226 Q203-214, AUDIO UNIT (X09-8542-70) COMPONENTS DESCRIPTION AUDIO UNIT (X09-8542-70) R

6、ef. NoApplication / FunctionOperation / Condition / Compatibility IC1Buffer AMPAmplifies 6dB by decreasing impedance. IC2Isolation AMPDecreases common mode noise. IC3Buffer AMPAmplifies 6dB by decreasing impedance. IC4Isolation AMPDecreases common mode noise. IC5LPFB-Rch side is phase inverter. IC6-

7、3dB ATTB-Lch side is buffer amplifier. IC7Buffer AMPDecreases impedance. IC9Phase inverterA-Lch side is buffer amplifier. IC13DC/DC converterOscillates and controls DC/DC converter. Q3,4Constant voltage power supplyControls 15V constant voltage. Q5,6DC/DC converterSwitching FET. Q710DC/DC converterD

8、rives Q5s and Q6s gates. RadioFans.CN 收音机爱 好者资料库 KAC-6403 3 Ref. NoApplication / FunctionOperation / Condition / Compatibility Q11,12DC/DC converterTurns on or off IC13 output. Q101,102Input muteAbsorbs shook noise when power turns on or off. Q103106Power AMP1st deferential amplifier. Q107110Power A

9、MP2nd deferential amplifier. Q111,112Power AMPCurrent mirror load for 2nd deferential amplifier. Q113,114Power AMPCompensates bias temperature in power amplifier. Q115118Power AMPDetects over-current. Q119122Power AMPDarlington driver. Q123126Power AMPDarlington output. Q131,132ATT signal controlCon

10、trols signal in attenuator. Q201,202Input muteAbsorbs shook noise when power turns on or off. Q203206Power AMP1st deferential amplifier. Q207210Power AMP2nd deferential amplifier. Q211,212Power AMPCurrent mirror load for 2nd deferential amplifier. Q213,214Power AMPCompensates bias temperature in pow

11、er amplifier. Q215218Power AMPDetects over-current. Q219222Power AMPDarlington driver. Q223226Power AMPDarlington output. Q231,232ATT signal controlControls signal in attenuator. Q601B-class stage muteGenerates mute signal. ON: Normal Q602MuteGenerates mute signal. OFF: Normal Q603Input muteGenerate

12、s mute signal. OFF: Normal Q604Power ON/OFFControls primary power supply. ON: Normal Q605Power ON/OFFControls power. Q606Power ON/OFFProtects from over-voltage. Stops when primary power supply input voltage is below 16V. Q610Over-current DETOperates when Q610 detects over-current, and DC/DC converte

13、r turns off. Q611,612DC output voltage DETOperates when DC output voltage is in power amplifier. Q613,614DC output voltage DETLatch circuit for DC to be detected. Q615,616B-class stage muteOperates to turn off input of power amplifier. Q617,618B-class stage muteDrives Q615 and Q616. ON: Normal D1Wro

14、ng connection protectionCuts fuse off when connector is connected wrongly. D2,3AVR reference voltageControls Q3 and Q4 with zener voltage. D4,5Secondary power supply rectifier D610SwitchingPrevents reverse flow. D3237Static electricity protectionPrevents OP-AMP to be broken by static electricity. D1

15、01,102Temperature compensatorStabilizes current between base and emitter of 2nd deferential transistors. D103,104Current mirrorCurrent mirror load for 2nd deferential amplifier. D105,106B-class stage mutePrevents reverse flow. D107111Over-current DETPrevents reverse flow. D201,202Temperature compens

16、atorStabilizes current between base and emitter of 2nd deferential transistors. COMPONENTS DESCRIPTION RadioFans.CN 收音机爱 好者资料库 KAC-6403 4 Ref. NoApplication / FunctionOperation / Condition / Compatibility D203,204Current mirrorCurrent mirror load for 2nd deferential amplifier. D205,206B-class stage

17、mutePrevents reverse flow. D207211Over-current DETPrevents reverse flow. D601LED controlControls D610s power indicator. D602,603Mute controlPrevents reverse flow. D604Mute AVR10V D605Power controlPrevents reverse flow. D606Over-current DETLevel shift for primary power supply. D607Power controlLevel

18、shift D608Mute controlBeing controlled by Q602. D610LEDBeing controlled by Q602. D613,614DC protectionOperates when DC is output. D616POP mute COMPONENTS DESCRIPTION No.ItemAlignment PointMethodAlign forNoteFig. Connect a DC voltmeter between VR5 (A-Lch)the following emitter resistors. PC BOARD 1IDE

19、L CURRENT VR6 (A-Rch)R253 (A-Lch) 2.5mV Over 5 minutes on page 6 VR7 (B-Lch)R254 (A-Rch)aging is required. and 7. VR8 (B-Rch)R453 (B-Lch) R454 (B-Rch) ADJUSTMENT KAC-6403 6 ABCDE 1 2 3 4 5 6 7 PC BOARD (FOIL SIDE VIEW) R223R225R423 R425 R608 R609 R619 R668 R629 R666 R669 C15 C609 C610 C617 R10R11 R1

20、6 R17 R19 R23 R26 R27 R606 R613 R614 R635 R636 R661 R662 R663 R664 R670 C14 C217 C219 C221 C222 C417 C419 C421 C607 C R12 R13 R14R15 R18 R20 R21 R22 R24 R25 R28 R209 R213 R219 R221 R229 AL R231 R233 R235 R237 R238 R239 R241 R242 R243 R R249 R251 R252 R413 R419 R421 R429R431 R433 R435 R437 R439 R441

21、R443 R449 R451 R604 R605 R607 R610 R611R612 R617 R620 R621 R622 R623 R632 R633 R634 R637 R665 R667 R671 TH1 TP44 W506 W533 W559 W535 W534 W537 W542 W539 W538 W536 R269 W546 W545 W543 W544 W541 W540 W557 W558 W592 W578 W579 916 81 B E BE B E B EB EB E BE BE B EB E B E BEBE B EB E BE B E BE BE B EB E

22、EB BE BE BE B E BEBEBE BE ID B BL IDL+ AL IDL+ AL IDL- AR IDL+ 2200uF 2200uF W191 C1 W192 C6 C7 C606 R261 C18 R602 R618 C8C9 C10 C17 C223 C224 C261 C423 C424 C601 C602 C603 3 4 5 6 791011 8 1 2 C608 L2 C12 C13 C16 C211C411 R7R8 R9 R245 R247 R248 R253 R255 R256 R257 R258 R445 R447 R453 R455 R457 R458

23、 R603 R615 R616 W203 W202 W26 W85W88W86 W87 W80 W78 W79 W104 W128 W124 W101 W103 W105 W118 W133 W83 W120 W112 W106 W107 W108 W126 W102 W130 W135 W93 W119 W125 W129 W134 W94 W163 W902 W167 W170 W169 W168 W159 W157 W160 W162 W161 W156 W155 W153 W152 W151 W141 W154 W158 W166 W165 W92 W84 W91 W89 W90 W1

24、31 W121 W116 W113 W146 W137 W117 W123 W96 W109 W110 W111 W145 W122 W144 W143 W149 W148 W147 W175 W100 W138 W115 W114 W127 W132 W98 W97 W136 W139 W99 BL W196 W198 W140 W189 W190 W188 W187 W176 W182 W177 W180 W179 W181 W183 W184 W185W172 W150 W164 W186 W178 W142 W194 W195 L3 W201 EB EB EB BE E B EB EB

25、 BE GSDGSD EBB EB EEB EB Q610 Q7 Q8 D8 D604 D614 D616 Q9 Q10 Q602 Q605 Q606 Q611 Q612 Q613 D6 D7 D9 D101 D103 D105 D107 D109 D110 D111 D201 D203 D207 D D601 D602 D603 D605 D606 D607 D613 Q11 Q12 Q Q Q601 Q603 Q614 Q615 Q616 Q617 Q618 Q Q131 D608 D4 Q119 Q123 Q219 Q223 D5 Q121Q122 Q125 Q126 Q604 J9 P

26、1 Q5 Q6 Q107 Q109 Q111 Q113 Q115 Q117 Q118 Q207 Q209 Q211 Q213 Q215 Q217 VR5 VR7 D1 IC13 AUDIO UNIT X09-8542-70 (J76-0189-01) DC voltmeter B-Lch 2.5mV DC voltmeter A-Lch 2.5mV KAC-6403 7 JIHGF 1 2 3 4 5 6 7 X09-8542-70 Ref. No.Address IC14H IC24H IC33H IC43H IC55H IC65H IC76I IC96I IC133D Q36H Q46G

27、Q52C Q62B Q73D Q82D Q93D Q102D Q113D Q122D Q1014F Q1024F Q1034F Q1044F Q1054F Q1064G Q1075E Q1085G Q1095F Q1105G Q1114F Q1124G Q1136C Q1146G Q1156D Q1165G Q1175B Q1185E Q1195D Q1205F Q1215C Q1225E Q1235D Q1245F Q1255C Q1265E Refer to the schematic diagram for the values of resistors and capacitors.

28、Ref. No.Address Q1314F Q1324G Q2014F Q2024F Q2033F Q2043F Q2053F Q2063G Q2073E Q2083G Q2093F Q2103G Q2114F Q2124G Q2132E Q2142G Q2153D Q2163F Q2173E Q2183H Q2193E Q2203G Q2213F Q2223H Q2232E Q2242G Q2252F Q2262H Q2314F Q2323G Q6016B Q6026B Q6035B Q6045A Q6056A Q6066A Q6104E Q6115E Q6125E Q6134E Q614

29、4E Q6153E Q6163E Q6174D Q6183D R30 C19 C31 C33 C35 C41 R207R208 R407 R408 R660 R5 R224R226R424 R426 C32 C34 C36 C42 R659 R6 C101C102 R100 R103 R104 R107 R108 R113 R114 C128 C324 R31 C117C118 C203 C204 C317 C318 C351 C403 C404 R115R116 R153 R155 R156 R165 R166 R167 R168 R179 R180 R203 R204 R205R206 R

30、300 R315 R316 R319 R320 R355 R356 R367 R373 R379 R380 R403R404 R405R406 C105 C106 C107 C108 C109 C110 C150 C151 C152 C153 C154 C218 C220 C259 C260 C301C302 C305C306 C307 C308 C309 C310 C352 C353 C417 C418 C420 421 C422 C459 C460 C901C902 C905 C906 R32 R101 R102 R105 R106 R109 R110 R111 R112 R117 R11

31、8 R121R122 1 2 9 10 R123 R124 R125 R126 R151 R152 R154 R201 R202 R209 R210 R211 R212 R213 R214 R215 R216 R219 R220 R221 R222 R227 R228 R230 AR R232 R234R236 8 R240 R244 R250 R265 R266 R301 R302 R303 R304 R305 R306 R307 R308 R309 R310 R311 R312 R313 R314 R317 R318 R321 R322 R323 R324 R325 R326 R357 R

32、358 R359 R361 R362 R374 R401 R402 R409 R410 R411 R412 R413 R414 R415 R416 R419 R420 R421 R422 R427R428 R430 R432 R433 R434 R436 R437 R438 R440 R441 R442 R444 R450 R451 R452 R465 R466 W516 W518 W517 W520 W527 W519 W514W513 W515 W510 W504 W522 W501 W503 W523 W511 W508 W507W505 W512 W502 W521 W509 W531

33、 W526 W532 W593 W524 W525 W529 W533 W530 W528 R33 R34 R35 R467 R468 R267 R268 R469 R470 R269 R270 W560 R365 C20 W556 R601 C21 W554 W552 W555 W547 R328 R327 W549 C44 R181 R182 W571 W570 W573 W572 W590 W574 W591 R366 W575 W581 W576 W580 W577 W578 W579 C43 14 58 58 41 58 41 58 41 58 41 58 41 B E B E B

34、E B E BE B E BE BE BE BE B E BE BE B E B E BE BE B E BE BE BE BE BE B BEBE BE BE EB EB IDL- BL BR IDL- BR IDL+ AR IDL- C2 C3 C616 C100 C4 C5 C207 C208 C300 C407C408 C903C904 C907C908 C103 C104 C111 C112 C113 C114 C115 C116 C159 C160 C201 C202 C205 C206 C211 C212 C213 C214 C215 C216 C303 C304 C311 C3

35、12 C313 C314 C315 C316 C355 C356 C401 C402 C405 C406 C411 C412 C413 C414 C415 C416 R246 R254 R446 R447 R448 R454 R455 R456 W18 W5 W32 W68 W34 W35 W29 W11 W28 W7 W8 W22 W21 W15 W16 W4 W36 W24 W13 W19 W17 W9 W30 W31 W20 W3 W14 W38 W47 W33 W10 W2 W39 W1 W12 W43 W66 W70 W61 W57 W81 W85 W71 W62 W82 W58 W

36、88 W54 W67 W63 W86 W87 W42 W41 W27 W25 W37 W45 W48 W44 W59 W55 W40 BR W64 W56 W60 W65 W75W83 W6 W73 W72 W76 W69 W77 W197 W84 W53 W52 W51 W49 W46 W50 C357 W199 C22 C155 C156 W200 VR1 VR2 EB EB EB EB BE BE E E EBBEEB EB 41 85 85 41 BEEB EB BE D34 D36 D35 D37 D32 D2 D3 D610 Q101 Q102 Q201 Q202 D33 D101

37、 D102 D103 D104 D106 D108 1 D201 D202 D203 D204 D205 D206 D208 D209 D210 D211 Q103 Q104 Q105 Q106 Q203 Q204 Q205Q206 Q231 Q232 Q131 Q132 D10 Q3 Q120 Q124 Q220 Q224 Q4 Q221 Q222 Q225 Q226 J1 J2 Q107 Q108 Q109 Q110 Q111 Q112 Q114 Q116 Q208 Q209 Q210 Q211 Q212 Q214 Q216 Q218 S3 S1S2 VR6 VR8 IC6 IC1 IC2

38、 IC3IC4 IC5 IC9 IC7 DC voltmeter B-Rch 2.5mV DC voltmeter A-Rch 2.5mV KAC-6403 8 ABCDE 1 2 3 4 5 6 7 X09-8542-70 (1/2) D35 D34 Q4 Q3 D5 D4 Q8 Q6 Q10 Q9 Q5 Q7 D6 Q11 D7 D8 Q12 D2D3 D9 IC1(2/2) (2/2) IC2 IC1(1/2) IC2(1/2) IC4(1/2) IC4 (2/2) IC3(1/2) D37 IC3(2/2) D36 INPUT SP J2 B LINE IN LR LAR J1 D33

39、 D32 DC/DC CONVERTER (2/2) IC9 IC7 (1/2) S2 IC7 (2/2) OFF/HPF (1/2) IC9 Ach INPUT SENS. SENS. Bch INPUT S1 A/AB S3 (2/2) IC5 OFF/LPF (2/2) IC6 (1/2) IC5 IC6 (1/2) D10 -3dB ATT HPF : 80Hz 12dB/OCT LPF : 80Hz 12dB/OCT PHASE INVERTER AMP BUFFER DC/DC CONVERTER BUFFER AMP AMP ISOLATION AMP BUFFER ISOLAT

40、ION AMP BUFFER AMP LPF AMP BUFFER PHASE INVERTER CONSTANT VOLTAGE POWER SUPPLY DC/DC CONVERTER ATT SIG CONTR TP24 TP25 TP71 TP23 TP72 TP64 TP69 TP73 TP74 TP63 TP65TP66 TP358TP359 TP60 TP57 L2 TP356 TP357 TH1 1 2 3 4 5 6 7 8 IN1+ IN1- FBACK DTC CT RT GND C1 IN2+ IN2- REF OUTCTRL VCC C2 E2 E1 C13 2.2u

41、50V 47u25 C2 100u25 C4 47u25 C3 100u25 C5 2.2K R5 2.2K R6 2200u35 C6 2200u35 C7 1/2W 10 R7 1500P C8 3300u16 + C10 56 R12 56 R13 4.7K R10 4.7K R11 56 R14 1.5K R16 1.5K R17 56 R15 10K R19 10K R21 330K R20 10K R18 0.01 C14 470 R23 1K R25 4.7K R26 1000P C17 R27 22K 10u50 C18 47u25 C16 R22 4.7K R28 85 6

42、7 4.7K R105 10K R111 15P C105 10u50 C103 1000P C101 10K R103 10K R107 R109 12K C117 100P R115 10K 15P C107 R117 10K C109 100P 47u25 C111 R113 10K C100 1000P R100 1K 7 6 85 0.01 C31 C110 100P R118 10KR110 12K 4.7K R106 15P C106 10K R108 10K R112 C118 100P R116 10K 0.01 C32 15P C108 47u25 C112 R114 10

43、K 1000P C102 10K R104 10u50 C104 2 1 3 4 4 3 2 1 1K R102 1K R101 TP67 2 4 8 10 10K R24 100K R318 10K C310 100P C309 100P R317 10K TP120 R30210u50 1K C304 1000P C302 R304 10K C306 15P 4.7K TP85 3 R306 2 TP86TP87 4 1 C318 100P R312 10K 3 1 R316 10K 2 3 C308 15P TP122 TP121 R310 12K R309 12K 1000P R307

44、R308 10K TP78 10K C303 10u50R301 1K C301 R303 10K TP76 C305 R305 4.7K 15P 6 5 R315 10K C317 100P R314 10K R300 1K C300 1000P R313 10K TP82 TP80 TP79TP77 7 8 R311 10K 5 6 C307 15P C34 0.01 R320 47K 4 1 C312 47u25 TP81 R319 47K C33 0.01 8 7 C311 47u25 BS BL AS AL AR BR R122 100K10u50 10u50 C115 10u50

45、C116 C113 10u50 C114 TP30 TP31 100K 100K R125 R123 TP29 2.2K R121 100K R124 R126 2.2K 10 8 4 TP32 2 12 34 56 109 78 BR BS BL C324 0.01 C128 0.01 AL AS AR B +B 14.4V VR1 10K R151 10 TP253 5 6 7 10K R153 TP250 430 R156 TP249 430 R155 0.1 C153 0.47 C151 1 2 3 22K R165 27K R167 8 4 0.01 C43 C44 0.01 10u

46、50 + C155 C159 10u50 + R181 47K 47K R179 0.47 C152 0.1 C154 7 6 5 10u50 + C160 10u50 + C156 22K R166 27K R168 R180 R182 47K 47K TP246 TP242 1 2 4 38 R152 10K TP251 C150 47P R154 10K VR2 10K TP350 430 R356 TP349 430 R355 5 6 7 10u50 + C355 68K R358 68K R357 33K R359 0.1 C351 0.047 C353 R361 11K 47K R

47、373 100K R380 10K R328 10K R327 100K R379 5 6 710u50 + C357 10K R365 1K R366 1 2 4 38 10K R362 10u5 + C356 10K R374 47P C352 4 2 83 1 2.2K R35 5.6K R34 1K R30 10u50 C22 + 470K R33 R32 9.1K6.2K R31 C20 0.01 0.01 C21 C9 1500P R8 10 1/2W 10 R9 1500P C12 1/2W 0.1 C15 W902 TP35 TP36 R322 2.2K 100K 100K R

48、324 10u50 C314 10u50 TP33 TP34 R321 2.2K R325 100K R326 100K R323 C315 C316 10u50 10u50 C313 1 3 C19 0.1 TP255 TP353 R367 4.7K 0.01 C42 Q3,4 Q5-12 Q231,232 C36 0.01 0.01 C35 + + + + + + + + + + + + + + + + + + + + + + IC13 AUDIO UNIT (X09-8542-70) 15.0V15.0V -15.0V -15.0V -15.0V 15.0V -15.0V 15.0V 2

49、.4V 5.0V 0V 0V 3.6V 14.2V 0V 12V 25.0V 15.0V -15.0V -25.0V 0V 15.0V 15.0V -15.0V 0V 0V -15.0V -15.0V 15.0V 15.0V -15.0V 2SA817A-F 2SA992-A 2SC1627A-F 2SC1845-A B C E 2SA1576A2SC3419 B EC 2SB1375-F 2SD2012-F 2SC4081DTA114EUA KAC-6403 9 JIHGF 1 2 3 4 5 6 7 X09-8542-70 (2/2) CAUTION : For continued safety, replace safety critical components only with manufacturers 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 (exposed parts are acceptably insulated from