Kenwood-KAC-6402-Service-Manual 电路图 维修手册.pdf

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1、 2005-5 PRINTED IN JAPAN B53-0285-00 (N) 1708 POWER AMPLIFIER KAC-6402 SERVICE MANUAL Accessory (W01-1606-05) 190mm Screw set (N99-1587-05) Fuse (F52-0014-05) Connecting cord assy (E30-6144-05) 4/3/2channel Power Amplifier PoweAmplifie MAXIMUMPOWER 4/3/2channel KAC-6402 (E type,M type) KAC-6402 (K t

2、ype) This product uses Lead Free solder. RadioFans.CN 收音机爱 好者资料库 KAC-6402 2 BLOCK DIAGRAM +6dB0dB+29.5dB ISOLATION AMPLIFIER LINE IN AL ST/MONO Ach INPUT GAIN CONT. LINE IN ARAMPLIFIER ISOLATION ISOLATION AMPLIFIER ST/MONO AMPLIFIER ISOLATION SPEAKER INPUT GAIN CONT. Bch INPUT BR LINE IN LINE IN BLL

3、PF+6dB HPF HPF LPF+6dB LPF+6dB HPF LPF+6dB HPF MUTE AMPLIFIER POWER POWER AMPLIFIER AMPLIFIER POWER POWER AMPLIFIER OUT BR SPEAKER SPEAKER OUT BL OUT AR SPEAKER OUT AL SPEAKER CONVERTER DC/DC AVR 15V OVER ROAD PROTECTION DC DETECT AND THERMAL PROTECTIONPROTECTION OVER VOLTAGE P CON CIRCUITP CON BATT

4、ERY A-AB +1 -1 +1 -1 FREQ. CONT. FREQ. CONT. COMPONENTS DESCRIPTION AUDIO UNIT (X09-5890-10) Ref. No.Application / FunctionOperation / Condition / Compatibility IC1,3Buffer amplifierLowers impedance and amplify by 6dB IC2,4Isolation amplifierReduces common mode noise IC5,9Buffer amplifierRch operate

5、s as reverse amplifier IC6,10Reverse buffer amplifierReverse amplifier operation of 6dB IC7,8,11,12LPF/HPFLPF and HPF with variable cut off IC13DC-DC converterOscillation and control of DC-DC converter Q3,4Constant voltage power supplyConstant voltage control of 15V Q5,6DC-DC converterSwitching FET

6、Q7,8,9,10DC-DC converterGate driver for Q5,6 Q11,12DC-DC converterON/OFF of IC13 output Q101,102,201,202Input mute circuitShock noise absorption at power ON/OFF Q103106,203206Power amplifierFirst step differential absorption Q107110,207210Power amplifierSecond step differential absorption Q111,112,2

7、11,212Power amplifierSecond step current mirror load Q113,114,213,214Power amplifierPower amplification circuit bias temperature compensation Q115118,215218Power amplifierExcess current detection Q119122,219222Power amplifierPower amplification step darlington driver Q123126,223226Power amplifierPow

8、er amplification step darlington output transistor Q601B-class step muteMute signal generation circuit: Normally ON Q602Mute circuitMute signal generation circuit: Normally OFF Q603Input muteMute signal generation circuit: Normally OFF Q604Power ON/OFFPrimary power supply control transistor: Normall

9、y ON Q605Power ON/OFFPower control circuit Q606Power ON/OFFExcess voltage protection circuit: Goes OFF when primary input voltage of 16V or less Q610Excess current detectionGoes ON when detecting excess current and turns OFF DC-DC converter Q611,612DC output voltage detectionGoes ON when detecting D

10、C output voltage from power amplifier RadioFans.CN 收音机爱 好者资料库 KAC-6402 3 COMPONENTS DESCRIPTION ADJUSTMENT No.ItemAlignment pointMethodAlign forNote VR5 (ALch) 1 IDLEVR6 (ARch)Connect a DC voltmeter 2.5mV After Power on CURRENTVR7 (BLch)between emitter resister5 minutes VR8 (BRch) Q226Q224Q225Q223 Q

11、124Q126Q123Q125 VR5 AL AR VR6 BR VR8 BL VR7 DC voltmeter BRch 2.5mV R456 DC voltmeter BLch 2.5mV R455 DC voltmeter ALch 2.5mV DC voltmeter ARch 2.5mV R255R256 Ref. No.Application / FunctionOperation / Condition / Compatibility Q613,614DC output voltage detectionLatch circuit at DC detection Q615,616

12、B-class step mute transistorCircuit for turning OFF input of power amplification step Q617,618B-class step mute transistorDriver for Q615,616: Normally ON D1 Reverse connection protection Melts off fuse when primary power supply is inversely connected for primary power supply D2,3AVR reference volta

13、geControl Q3,4 by Zenner voltage generated at D2,3 D4,5Secondary power supply rectifier D69SwitchingReverse flow prevention D22,201,101,102Temperature compensationMakes 2nd step deferential transistor Vbe current constant D3237Static protectionPrevents ope amp destruction by static D103,104,203,204C

14、urrent mirror2nd step deferential amplifier current mirror load D105,106,205,206B-class step muteReverse flow prevention D107110,207210Excess current detectionReverse flow prevention D229,430Input muteReverse flow prevention of signal current D601LED controlD610 power indicator control D602,603Mute

15、controlReverse flow prevention D604AVR for mute10V D605Power controlReverse flow prevention D606 Primary power supply excess Level shift voltage detectoin D607Power controlLevel shift RadioFans.CN 收音机爱 好者资料库 KAC-6402 4 ABCDE 1 2 3 4 5 6 7 PC BOARD (FOIL SIDE VIEW) W412 R636 R613 R614 R637 R633 C610

16、C607 R605 R604 R610 R608 R607 R611 R609 R612 R606 R602 R635 C609 R632 R634 R617 R621 R620 R629 R623 R622 R668 R662 R664 W416 R671 R666 R670 R661 R667 R669 R13 W417 W421 R12 W420 W419 R14 R10 R19 R25 R24 R22 C13 W413 W414 R26 R21 C11 W415 R23 R16 R17 R8 R15 R11 W418 W402 W407 W406 R663 R665 W409 W410

17、 W411 W408 R237 R251 C217 R233 R241 C221 R229 W388 W395 W394 W387 R243 R235 W396 W397 W400 W398 W399 W401 R27 R18 R2 R1 R221 R231 W389 W392 W390 W391 W393 R225 R223 R219 W385 W381 R213 R209 W384 W383 W382 R425 R423R465 W404 R421 R466 R413 W379 R431 W380 R419 TH1 R443R449 C419 R439 R437 W405 R435 W40

18、3 R451 C421 R441 R429 R433 C417 W386 R9 18 169 B E B E BE B EB E BE BE B E BE BE BE BE B EB E BE B E B E BE BEBE BE C6 C7 L2 L3 W601 C606 R261 R461 C14 R618 C461 C903 C907 C1 11109 7 8 3 4 5 6 1 2 C8 C12 C211 C223 C224 C411 C423 C424 C601 C602 C603 C608 C617 R7 R245 R247 R255 R257 R258 R445 R453 R45

19、5 R457 R458 R603 R615 R616 VR5 VR7 C15 W174 W167 W166 W172 SDGSDG W175 W173 W170 W176 W171 W181 W178 W179 W177 W180 W182 W112 W113W131 W123 W163 W161 W68 W127 W99 W100 W106 W102 W101 W137 W144 W151 W147 W143 W146 W150 W136 W104 W103 W142 W156 W165 W152 W138 W140 W80 W79 W78 W71 W75 W76 W77 W135 W124

20、 W164 W157 W141 W94 W74 W162 W155 W107 W139 W120 W125 W126 W128 W129 W133 W132 W118 W116 W115 W114 W134 W117 W149 W148 W109 W105 W70 W72 W73 W92 W108 W121 W122 W85 W96 W69 W91 W86 W87 W88 W98 W90 W93 W83 W82 W97 W119 W89 W81W95 W84 W145 W154 W110 W111 W153 W130 W158 W160 BL AL C9 EB EB BE EB E E BE

21、BE B E B BE BE BE B BBE BE E E BE BE C10 Q615 D616 Q605 Q606 D607 D606 D614 Q614 Q602 D602 D603 D605 D604 D601 Q603 Q601 Q612 Q611 D613 Q613 Q610 Q616 Q618 Q617 Q12 Q7 Q8 Q9 Q11 D6 D9 D8 D7 Q10 D109 D111 D D103 D101 D430 D206 D203 D D207 D209 D4 Q123 Q223 D5 Q125 Q225 D1 J9 P1 Q5Q6 Q113 Q213 Q119 Q2

22、19 Q121 Q221 Q604 Q107 Q109 Q111 Q117 Q207 Q211 Q215 Q217 IC13 AUDIO UNIT X09-5890-10 (J76-0087-11) Refer to the schematic diagram for the values of resistors and capacitors. X09-5890-10 Ref. No. Address IC13I IC23H IC32I IC42H IC53I IC63I IC73H Ref. No. Address IC83H IC94I IC104I IC114H IC124H IC13

23、4C Q36I Ref. No. Address Q46H Q52C Q62B Q73B Q83C Q93B Q103C Q114B Q124C Q1014F Q1024F Ref. No. Address Q1034F Q1044F Q1054F Q1064G Q1074E Q1085G Q1095F Q1105G Q1114E Q1124G Q1136E KAC-6402 5 JIHGF 1 2 3 4 5 6 7 R417 R201 R235 R249 R219 5 W377 R217 R211 C901 W381 R213 R209 R421 R413 R411 R409 W379 R

24、431 W380 W376 R419 C905 W378 R119 R115 C117 C31 R128 R240 C220 R232 C222 R242 R239 C219 W375 W372 W371 W370 R252 R238 W369 W367 W360 R234C218 R230 R244 R236 R250 W364 R660 R659 W374 R216 R202 R204 C204 R208 R215 C259 R227 C260 R228 R205 R203C203 R207 R206 R210 R212 R214 W368 R218 C902 R220 R266 R265

25、 R408 R404 C404 R401 R405 R407 R403 C403 W373 R406 C459 R415 R427 C460 R428 R414 R410 R402 W365 R418 R416 R412 W366 C906 R420 W357 R178 R224 R222 R226 R174 W363 R176 C37 R170 R172 C38 R173 C154 C152 R166 W353 R168 R164 R177 W358 R422 R424 R426 R378R374 W362 W361 R432 W359 C352 C354 R376 C41 R372 C42

26、 R370 R375 R377R373 R366 W354 W355 W356 R368 R364 W351 W350 W352 R6 W343 R5 W319 W312 W308 W318 W317 W322 W310 W309 W315 W306 W311 W305 W303 R353 W324 W327 R381 W323 R181 R161 R169 R171 W339 W333 W334 C153 C151 R165 W347 R175 W337 R167 R163 W338 R179 C35C36 R158 R162 R160 R180 W325 R154 C150 R157 W3

27、32 R159 W328 W330 R116 R361 R360 W348 C351 C353 R371 R369 W342 W336 W340 W335 R118 C110 W346C32W345 R130 R365 R120 W341 R367 R363 C108 C40C39 R359 R358 R362 R379 R352 R380 R354 C350 C118 R357 R110 R108 R114 R112 W331 R106 C106 R153R152 R182 W321 R155 R151 R156 W313 R351 R356 R355 R382 W320 W316 C101

28、 C102 R100 R104 W30 W302 W301 W304 C324 C128 R450 R440 C420 R436 R444 R442 C422 R452 R438 C418 R434 R430 R303R304 C317C318 R312 R327 R313 R311 R328 R314 C33 R319 C109 R320 C34 R330 C308 R318 C310 C107 R316 R129 R117 R329 R317 C309 C307 R315 C306 R109 R107 R306 R310 R308 R127 R113 R111 R300 C105 W329

29、 R105 C305 R305 R309 R307 W326 W344 W349 R126 R323 R123 R103 C129 R125 R145 R326 R324 R325 C301 R321 R121 W314 R322 R122 R124 C302 B E B E BE BE B E BE BE B E B E BE BE B E VR1 VR2 VR3VR4 2 5 6 71 4 3 1 2 9 10 C2 C3 C616 C4 C5 C100 C207 C208 C209 C210 C261 C300 C407C408 C409C410 C461 C904 C908 C103

30、C104 C111 C112C113 C114 C115 C116 C155 C156 C157 C158 C159 C160 C201 C202 C205 C206 C211 C212 C213 C214 C215C216 C303 C304 C311 C312 C313 C314 C315 C316 C355 C356 C357 C358 C359 C360 C401 C402 C405 C406 C411 C412 C413 C414 C415 C416 R101 R102 R246 R248 R253 R254 R256 R301 R302 R446 R447 R448 R454 R4

31、56 VR6 VR8 W55 W12 W8 W22 W2 W3 W11 W14 W59 W62 W16 W68 W18 W20 W159 W19 W60 W23 W21 W17 W25 W24 W38 W36 W33 W31 W30 W27 W35 W32 W29 W34 W37 W39 W28 W40 W13 W10 W4 W54 W41 W52 W64 W71 W53 W47 W58 W67 W5 W7 W6 W26 W15 W48 W63 W57 W70 W46 W45 W1 W61 W69 W66 W65 W56 W44 W51 W43 W42 W50 W49 W9 BR AR 14

32、85 41 58 41 58 41 58 41 58 41 58 41 58 41 58 41 58 41 58 41 58 41 58 41 58 EB BE BE BEBEB EB EB EBEB EB BE BE B B BEEBE EEB BE B E BE BE EB BE BE BE BE BE EB E B EB Q205 D107 1 D105 D101 Q105 D201 D108 D110 D106 Q104 Q103 Q101Q102 Q106 D229 D102 Q202 Q204 Q203 Q201 Q206 D22 D104 D204 D3 D2 D610 D34

33、D32 D33 D208 D205 D211 D210 D37 D35 D36 Q3 Q123 Q124 Q224 Q4 Q126 Q225Q226 S4 S5 J2 Q114 Q214 S1 S2 S3 J1 AB-A S1.INPUT VR2.Bch SENS ST-MONO S2.Bch VR1.Ach SENS ST-MONO VR3.Ach FREQUENCY HPF-OFF-LPF S4.Ach HPF-OFF-LPF S5.Bch VR4.Bch FREQUENCY AchBch Q119Q120 Q220 Q122 Q221 Q222 Q107 Q108 Q109 Q110 Q

34、112 Q115 Q116 Q118 Q207 Q208 Q209 Q210 Q212 Q216 Q218 S3.Ach IC12 IC8 IC11IC10 IC9 IC7 IC2 IC6 IC5 IC1 IC4IC3 Ref. No. Address Q1146G Q1155F Q1165H Q1175E Q1185G Q1195E Q1205H Q1215D Q1225G Ref. No. Address Q1235F Q1245H Q1255D Q1265G Q2014F Q2024F Q2033F Q2043F Q2053F Ref. No. Address Q2063G Q2073E

35、 Q2083G Q2093F Q2103G Q2113E Q2123G Q2132E Q2142G Ref. No. Address Q2153E Q2162F Q2173E Q2182G Q2192D Q2202G Q2212F Q2222H Q2232D Ref. No. Address Q2242G Q2252E Q2262H Q6015B Q6025B Q6035B Q6046B Q6056B Q6066B Ref. No. Address Q6106C Q6116C Q6126C Q6136C Q6146C Q6156D Q6166C Q6176D Q6186C KAC-6402 6

36、 ABCDE 1 2 3 4 5 6 7 D35 D34 S3 Q4 Q3 D5 D4 Q8 Q6 Q10 Q9 Q5 Q7 D6 Q11 Q12 D2D3 IC1(2/2) (2/2) IC2 IC1(1/2) IC2(1/2) ST/MONO S1 A/AB ST/MONO S2 (2/2) IC9 INPUT SENS. (1/2) IC9 (2/2) IC10 IC10 (1/2) (1/2) IC5 INPUT SENS. IC5 (2/2) IC6 (1/2) (2/2) IC6 IC4(1/2) IC4 (2/2) IC3(1/2) D37 IC3(2/2) D36 INPUT

37、SP J2 A LINE IN LR LBR J1 D33 D32 PHASE INVERTER DC/DC CONVERTER BUFF ISO BUFF ISO TP24 TP25 TP71 TP23 TP72 TP64 TP69 TP73 TP74 TP63 TP65TP66 TP255 TP253 VR1 TP250 TP249 TP251 TP227TP228 TP233 TP223 TP230 TP234 TP225 TP358 TP359 TP60 TP57 L2 C10 47u25 C2 10u50 C4 47u25 C3 10u50 C5 2.2K R5 2.2K R6 22

38、00u35 C6 2200u35 C7 1/2W 10 R7 1200P C8 3300u16 + C15 3300u16 + C9 56 R10 56 R11 4.7K R8 4.7K R9 56 R12 1.5K R14 1.5K R15 56 R13 27K R17 27K R16 85 6 7 1K 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 1

39、000P R100 1K 7 6 85 0.01 C31 R119 47KR120 47K C110 100P R118 10KR110 12K 1K R106 15P C106 10K R108 10K R112 C118 100P R116 10K 0.01 C32 15P C108 47u25 C112 R114 10K 1000P C102 10K R104 10u50 C104 2 1 3 4 4 3 2 1 R1 8.2K R2 8.2K 1K R102 1K R101 10 R145 1000P C129 TP67 2 4 8 10 5 6 7 10K R153 100 R151

40、 430 R156 430 R155 2 3 1 4 8 R154 10K C150 47P 0.01 C35 0.01 C36 5 6 7 10K R157 R159 20K 10K R161 10K R165 3K R167 VR3 2 3 1 8 4 10K R158 20K R160 10 R1 2.2K R16 2.2K R163 TP226 10K R152 R360 20K R359 20K TP333 R358 C350 47P R354 10K 4 10K R352R351 10K C39 3 2 0.01 C40 8 1 TP327 0.01 TP351 3 2 430 1

41、00 R353 10KVR2 R355 R356 TP349 TP350 430 TP353 TP323 6 5 7 R357 10K 6 5 TP325 TP328 R367 R36 8 4 1 R 1 TP330 2.2 TP33 VR4 2.2K R363 7 R36 10K TP326 R365 R318 10K C310 100P C309 100P R317 10K TP120 R30210u50 1K C304 1000P C302 R304 10K C306 15P 1K TP85 3 R306 2 TP86TP87 4 1 C318 100P R312 10K 3 9 7 1

42、 R316 10K 2 3 C308 15P TP122 TP121 R310 12K R309 12K 1000P R307R308 10K TP78 10K C303 10u50R301 1K C301 R303 10K TP76 C305 R305 1K 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

43、C311 47u25 AS AL BS BL BR AR TP36 47K 47K R329 47K R327 R328 R330 47K 9 7 3 1 R323C313 10u50 C315 10u5051K R325 51K 10u50 C314 10u50 C316 51K R326 R324 51K TP34 2.2K R321 TP33 2.2K R322 TP35 47K R122 51K10u50 10u50 C115 10u50 C116 C113 10u50 C114 TP30 TP31 51K 51K R125 R123 TP29 2.2K R121 51K R124 R

44、126 2.2K 47K 47K R127 R129 10 47K R130 R128 8 4 TP32 2 12 34 56 109 78 AR AS AL C324 0.01 C128 0.01 BL BS BR B +B 14.4V + + + + + + + + + + + + + + + + + + + (X09-5890-10) 10K 10K 10K 10K 15.0V15.0V -15.0V -15.0V -15.0V 15.0V -15.0V 15.0V -15.0V 15.0 -15.0V 15 -15.0V 25.0V 15.6V -15.6V-25.0V -15.0V

45、X09-5890-10 (1/3) KAC-6402 7 JIHGF D229 Q106 Q104 Q112 D104 Q102 Q101 D102 Q108 Q110 D101 Q107Q109 Q103 Q105 D103 Q111 Q116 Q114 Q118 D108 Q120 Q124 D111 D106 D105 Q117 Q121 D110 Q122 D109 Q113 Q115 D107 Q119 Q126 Q125 Q123 D6 D7 D8 D9 /2) C10 IC11 (2/2) (1/2) IC11 IC12 (1/2) IC12 (2/2) S4 ARIC10 (1

46、/2) HPF/ LPF OFF/ D430 Q206 IC6 (1/2) IC8 (2/2) (1/2) IC8 2/2) C6 (1/2) IC7 IC7 (2/2) Q201 Q202 OFF/ LPF HPF/ S5 Q204 Q203Q205 Q214 Q212 D204 D208 Q216 Q224 Q220 B D209 Q208Q210 D22 D201 Q207Q209 Q218 D210 D206 D205 D211 Q213Q211 D203 Q217 Q215 D207 Q219 Q222 Q226 Q221 Q225 BL Q223 D604 Q605 D605 Q6

47、02 D610 Q601 D602 D601 D603 Q603 Q604 D606 Q606 D607 MUTE POWER AMP +B SW TP228 TP229 TP241 TP244 TP238 TP237 TP232 3 TP230 TP231 TP234 TP235 TP239TP240 TP243 TP242 TP247 TP246 TP361 TP61 TP372 TP360 TP370 TP369 TP371 TP59 TP58 TP365 TP40 TP3 TP TP3 TP3 TP356 TP357 TH1 1 2 3 4 5 6 7 8 IN1+ IN1- FBAC

48、K DTC CT RT GND C1 16 15 14 13 12 11 10 9 IN2+ IN2- REF OUTCTRL VCC C2 E2 E1 C10 2.2u50V 27K R17 10K R18 2.2M R19 27K R16 0.01 C11 470 R27 1K R23 6.8K R22 1000P C13 R24 16K 10u50 C14 47u25 C12 R26 1.1K R25 150 R223 150 R225 6.2K R221 33 R233 470P C903 1.8K R229 100 R235 4.7 R245 1.8K R249 2W 0.1 R25

49、3 220 R243 680P C219 680P C221 R239 5.1KR241 5.1K 1.8K R251 2W 0.1 R255 0.01 C217 510 R231 10P C215 43K R227 3P C901 47P C213 100 R237 4.7 R247 8.2K R207 100K R203 100 R213 1.5K R217 100P C211 220P C209 47u25 C207 4700P C205 820 R211 100 R219 100 R220 10 R261 C261 220u35 + 100K R204 C204 470P R206 43K C203 470P R205 43K 820 R209 820 R210 820 R212 10u50 C202 3K R202 100 R214 47u25 C208 + 1.3K R216 220P C210 1.5K R218 100P C212 3P C902 510 R232 47P C214 43K R228 10P C216 0.01 C218 680P C222 680P C220 5.1K5.1K R244 4.7 R248 1.8K R250 4.7 R246 1.8K R252 2W 0.1 R256 2W 0.1 R254 100 R236 4