Kenwood-KAC-8402-D-Service-Manual 电路图 维修手册.pdf

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1、 2005-3 PRINTED IN JAPAN B53-0250-00 (N) 1708 POWER AMPLIFIER KAC-8402/8452 SERVICE MANUAL This product uses Lead Free solder. CONTROL SYSTEM PoweAmplifie channel Accessories (W01-1606-05) KAC-8452 (E type,M type) Dressing Panel (A21-4464-02) Screw set (N99-1759-05) Connecting cord assy (E30-6144-05

2、) KAC-8402 KAC-8452 (K type) Dressing Panel (A21-4469-02) : KAC-8452(K type) (A21-4470-02) : KAC-8402 (A21-4524-02) : KAC-8452(E type), KAC-8452(M type) 19cm Fuse (40A) (F52-0016-05) RadioFans.CN 收音机爱 好者资料库 KAC-8402/8452 2 BLOCK DIAGRAM L AMPLIFIER ISOLATIONHPF AL SPK HPFISOLATION AMPLIFIER SPK R AL

3、 FREQ 12dB IC5 (X08)IC1 MUTEPOWER AMP OUTPUT SPEAKER SW1 ST/MONO Q201-225 Q241,242 MUTEPOWER AMP OUTPUT SPEAKER12dB IC1 (X08) INVERT HPF HPF AMPLIFIER ISOLATION AMPLIFIER ISOLATION SPK BR R L IC2 BL SPK SW2 ST/MONO IC4 (X08)Q401-426 12dB 12dB IC1 (X08) INVERT MUTE Q443,444 MUTE SPEAKER SPEAKER OUTPU

4、T OUTPUT POWER AMP POWER AMPB.B LPF IC6 (X08) SW4 HPF/OFF/LPF 18dB IC7,8 (X08) B.B SW SW AB/A SW0 L OUTPUT LEVEL R P CON CIRCUIT AVR P-CON CONVERTER DC/DC OVERLOAD PROTECTOR DC DETECTOP BATTERY CIRCUIT OVER VOLTAGE PROTECTION THERMAL 15V LINE IN 6dB0dB32.5dB0dB INPUT SENS INPUT SENS (A) (B) LINE IN

5、(A+B) LINE OUT HPF/OFF SW3 X08X09X09 RadioFans.CN 收音机爱 好者资料库 KAC-8402/8452 3 COMPONENTS DESCRIPTION ADJUSTMENT No.ITEMALIGNMENT POINTMETHODALIGN FORNOTE VR1 (ALch) Connect a DC voltmeter 1 IDLEVR2 (ARch) between check land2.5mV After Power on CURRENTVR3 (BLch) (Refer to PC BOARD) 5 minutes VR4 (BRch

6、) PREAMPLIFIER UNIT (X08-4200-10) Ref. No.Application / Function IC1 (2/2)ARch reversal buffer IC1 (1/2)BRch reversal buffer IC4Bch HPF IC5Ach HPF IC6Bch LPF IC7,8Bch Bass boost filter AUDIO UNIT (X09-5840-1x) Ref. No.Application / Function IC1,2Input isolation amp IC4Switching regulator controller

7、IC6 For temperature protection and -3dB attenuator comparators Q1For +15.6V AVR Q2For -15.6V AVR Q38DC/DC converter FET Q912For FET driving Q13,14FET drive low start SW Q201210For ACH voltage amplifying step differential amplifying Q211For temperature compensation bias Q212For ACH voltage amplifying

8、 step differential amplifying Q213For temperature compensation bias Q214219For ACH voltage amplifying step differential amplifying Ref. No.Application / Function Q220For ACH final current amplifying Q221For ACH voltage amplifying step differential amplifying Q222,223For ACH final current amplifying

9、Q225For ACH final current amplifying Q241,242Mute Q280-3dB Attenuator circuit Q282-3dB Attenuator circuit Q401410For BCH voltage amplifying step differential amplifying Q411,412For temperature compensation bias Q415422For BCH voltage amplifying step differential amplifying Q423426For BCH final curre

10、nt amplifying Q443,444Mute Q481,482-3dB Attenuator circuit Q601For shock noise prevention Q602P-CON ON/OFF processing Q603Mute driver Q604+B SW Q605P-CON ON/OFF processing Q606For BU excess voltage detection Q610 For excess current detection and excess current protection Q611614For output DC abnorma

11、l voltage detection Q615618For shock noise prevention Q619,620Logo LED power supply Q621628For temperature detection RadioFans.CN 收音机爱 好者资料库 KAC-8402/8452 4 ABCDE 1 2 3 4 5 6 7 R639 R640 W575 C902 W533 R255 R256 R451 R452 R905 TH601 TH602 TH603 R216 R218 R416 R417 R418 R453 C217 R273 R4 R629 C33C34

12、C338 C417 C337 C418 C607 C610R633 C171 R123R124 C371 R323R324 C301 C302 C218 R303 R304 R305 R306 R311 R312 C101 C102 R100 R103 R104 R105 R106 R111 R112 C124 C324 C107 C126 C156 C203 C204 C326 C356 C403 C404 C609 R196 R203 R204 R227 R228 R396 R403 R404 R635 R636 R654 R655 R656 R657 C105C106 C113C114

13、C131 C132 C220 C222 C305 C306 C313 C314 C331 C332 C419 C420 C421 C422 C910 C911 C912 C913 R107R108 R109R110 R113 R114 R115 R116 R117 R118 R119 R120 R121R122 R125 R126 R170 R172 R194 R195 R201 R205 R206 R207 R208 R209 R210 R211 R212 R213 R214 R223 R224 R230 R232 R238 R240 R258 R260 R263 R264 R265 R26

14、6 R280 R282 R284 R285 R287 R307 R308 R309 R310 R313 R314 R315 R316 R317 R318 R319 R320 R321R322 R325 R326 R370 R372 R394 R395 R401 R405 R406 R407 R408 R409 R410 R411 R412 R413 R414 R421 R423 R424 R425 R426 R427 R428 R429 R430 R431 R432 R437 R438 R439 R440 R457 R458 R460 R463 R464 R465 R466 R480 R481

15、 R484 R486 R488 R617 R620 R621 BR BL AR R622 R623 R632 R634 R637 R671 W576 W560 W549 C333 C334 C133 C134 W568 W571 W554 W570 W552 W551 W540 W538 W553 W517 W529 W546 W539 W528 W532 W535 W531 W527 W564 W563 W526 W518 W561 W519 W521 W520 W569 W548 W562 W516 W530 W555 W523 W572 W536 W558 W534 W565W566W5

16、67 W559 R628 W547 W543 W544 W556 W557 W545 W541 W542 W550 W537 W524 W525 W573 R638 R625 W R274 R473 R474 148 71 148 17 W522 216 117 1 134679 2 9 10 C7 W362 W260 W266 W265 W297 C2 W258 W177 R1 C3 C606 R2 R261 R461 C300 W206 C100 R371 C4 C5 C207 C208 C251 C263 C264 C407 C408 C450 C451 R171 C463 C464 C

17、608 C908 C909 C103 C104 C109 C110 C111 C112 C115 C116 C150 C201 C202 C205 C206 C209 C210 C211 C212 C213 C214 C303 C304 C309 C310 C311 C312 C315 C316 C350 C401 C402 C405 C406 C409 C410 C411 C412 C413 C414 C415 C416 R101 R102 R198 R219 R220 R221 R222 R234 R244 R246R248 R262 R271 R301 R302 R398 R419 R4

18、20 R422 R433 R434 R435 R436 R441 R442 R443 R444 R445 -VCC+VCC R446 R447 R448 R454 R455 R459 R470 R471 C W203 W192 W200 W340 W332 W306 W358 W359 W242 W188 W243 W183 W349 W344 W180 W169 W175 W345 W300 W309 W285 W313 W337 W310 W355 W356 W338 W312 W343 W321 W305 R300 W351 W341 W314 W168 W316 W320 W317 W

19、333 W174 W311 W299 W287 W282 W298 W292 W303 W273 W361 W279 W222 W215 W228 W307 W342 W179 W301 W326 W214 W247 W246 W288 W281 W323 W363 W296 W244 W181 W308 W304 W280 W166 W227 W189 W324 W289 W302 W261 W268 W283 W319 W269 W270 W211 W236 W202 W190 W357 W315 W330W329 W322 W249 W255 W257 W254 W353 W347 W2

20、59 W346 W350 W199 W184 W158 W167 W185 W205 W219 W226 W220 W209 W201 W325 W276 W193 W277 W221 W264 W149 W195 W171 W245 W271 W272 W182 W196 W187 W191 W204 W164 W217 W328 W335 W253 W210 W170 W176 W348 W294 W293 W231 W339 W336 W225 W162 W165 W290 W198 W197 W291 W241 W224 W186 W208 W250 W334 W172 W327 W2

21、75 W331 W318 W115 W118 W360 W216 W230 W234 W235 W104 W232 W178 W295 W163 W238 W213 W223 W207 W229 W212 W218 W194 W173 W161 W239 W286 W233 W284 W263 W267 W278 W274 W240 W251 W256 W352 W365 W252 W248 W262 W370 C261 C461 -B VR2 VR3 VR4 BE EB EB EB EB EB EB EB EB EB EB EBEBEB EEBEBEBB EBEB EB EB EB E B

22、EB EB EB EB BE BE BE EB EB EB EB E B EB EB EB EB EB EB EB B E BE B E B EB E BE BE BEBE BE B E B EB E B EB E B E Q626 Q627 D101 D301 D102 D302 Q610 D614Q614 D300 D100 D107 D3 D4 Q241 Q242 Q280 Q282 Q481 Q482 Q611 Q612 Q613 D229D295 D430 D459 D460 D461 D495 D617 D618 Q443 Q444 Q625 J1 Q212 Q419 Q420 Q

23、421 Q422 D152 D204 D251 D261 D403 D404 D405 D408 D457 D458 D462 D463 D613 D Q201 Q202 Q203 Q204 Q205 Q206 Q207 Q208 Q210 Q216 Q218 Q401 Q402 Q403 Q404 Q405 Q406 Q407 Q408 Q409 Q410 Q415 Q416 Q417 Q418 Q621 Q622 Q623 CN1 Q1 Q220 Q423Q424 Q2 Q222 Q225 Q425Q426 J8 J2 AR BR BL Q213 Q411 Q412 IC1 IC2 LIN

24、E OUT BA+BA LINE IN SPEAKER LEVEL INPUT SPEAKSPEAKER OUTPUT B AUDIO UNIT X09-5840-1x A/2 (J76-0074-11) DC voltmeter ARch 2.5mV DC voltmeter BLch 2.5mV DC voltmeter BRch 2.5mV PC BOARD (FOIL SIDE VIEW) KAC-8402/8452 5 JIHGF 1 2 3 4 5 6 7 Ref. No. Address IC15C IC25B IC45I IC65F Q12C Q22C Q33H Q44H Q5

25、4H Q65H Q74H Q84H Q94I Q104I Q114I Q124I Q134I Q144I Q2014D Q2023C Q2034D Q2043C Q2053D Q2063C Q2073D Q2083C Q2093F Q2103E Q2112F Q2122E Q2132D Q2142F Q2152G Q2162E Q2172G Q2182F Q2192H Q2202D Q2212G Q2222E Q2232G Q2252F Q2414D Q2424D Q2804D Q2824D Q4014C Q4025C Q4034C Q4045C R641 C902 R642 R660 R90

26、5 C617 TH604 TH605 R3 R215 6 R217 R218 R668 R659 R907 R4 R666 R669 R610 R612 C600 R602 C17 R624 R7R8 R13 R14 R16 R20 R22 R24 R606 R613 R614 R649 R654 R655 R657 R658 R661 R662 R663 R664 R670 R903 C219 C221 R9 R10 R11 R12 R15 R17 R18 R19 R21 R23 R25 R225 R226 R229 R231 R237 R239 R251 R257 R604 R605 R6

27、07 R611 R618 AR AL GND BU R643R648 R665 R667 R671 R902 R904 R906 W577 W560 W513 17 W501 W502 W503 W504 518 W511 W510 W514 W512 W505 W515 W507 W506 W508 W509 R625 W574 R644 18 169 14 85 R627 R609 13 L3 C6 C7 L2L1 L4 W364 R608 C616 C903 R615 C16 C1 C8 C9 C14 C250 C251 C601 C602 C603 C604 C605 C906 C90

28、7 C13 C15 C215 C216 R5 R6 R233 R235 R236 R241 R242 R243 R245R247 R259 R262 R270 R271 R603 R616 C611 W122 W123 W124 W111 W154 W155 W354 W169 W175 W168 W174 W237 W105 W145 W102 W101 W103 W159 W160 W158 W167 W14971 W142 W140 W132 W164 W156 W148 W170 W176 W128 W130 W144 W162 W165 W150 W153 W135 W133 72

29、W151 W126 W134 W110 W116 W121 W120 W117 W113 W114 W112 W129 W127 W143 W141 W157 W152 W136 W163 W125 W106 W137 W138 W146 W131 W139 61 W108 W109 W147 W366 W367 W368 W369 C10 C11 C922 VR1 +B VR2 W2 W3 W13 W14 EB EB EB EB EB EB EB EBEBEB SDGSDGSDGSDGSDGSDG EB BE BE BE B E B EB E BE BE BE B E BE BE B E B

30、 E B EB E BE B E B EB E B E Q628 Q9Q12 Q619 Q608 D604 Q10Q11 Q602 Q605 Q606 Q620 D10 D253 D254 D255 D606 D607 D617 Q13 Q14 Q603 Q615 Q616 Q617 Q618 D600 D61 Q219 Q214 Q221 Q604 D8 D616 D7 D9 D203 D205 D206 D260 D601 D602 D603 D609 D605 D615 Q209 Q210 Q215 Q6 Q217 Q218 Q601 WH1 Q624 D610 D5 Q223 D6 Q

31、225 D1 D2 J3 P1 Q3 Q4 Q5 Q6 Q7 Q8 Q211 AL AR IC6 IC4 X09 B/2 SPEAKER OUTPUT APOWER IN DC voltmeter ALch 2.5mV Ref. No. Address Q4054C Q4065C Q4074C Q4084C Q4094C Q4105C Q4113B Q4124B Q4153A Q4164A Q4173A Q4184A Q4193A Q4204A Q4213A Q4224A Q4232B Q4245B Q4253B Q4264B Q4434C Q4445C Q4814D Q4825D Q6015

32、F Q6025G Q6035F Q6045G Q6055F Q6065F Q6085G Q6106D Q6116D Q6126D Q6136D Q6146C Q6154F Q6164F Q6174F Q6184F Q6195F Q6205G Q6215D Q6222B Q6232D Q6243G Q6255D Q6262B Q6272D Q6283G X09-5840-1x Refer to the schematic diagram for the values of resistors and capacitors. KAC-8402/8452 6 KLMNO 1 2 3 4 5 6 7

33、W126 W107 C229 W132 R133 R134W110 R137 W116 R138 R147 R148 W133 W102 W130 C123 C129 W129 W119 R224 W134 W104 C113 C202 C114 R141 R142 C207 C223 C224 R135 C227 C122 R124 C201 C208 C221 C222 R129 C226 C225 R123 R127 R128 C203 C219 R204 R207 R208 R215 R217 R218 R221 R222 R233 R234 R237 R238 R243 R244 R

34、247 R248 W125 R227 W113 C204 C205 C206 C211 C212 C213C214 C228 C103 C104 W111 W128 C230 C124 R121 R122 R130 R205 R206 R209 R210 R211 R212 R213 R214 R219 R220 R228 R229 R239 R240 R241 R242 R246 R601 R203 R258 R259 R126 R604 W127 W121 W117 W131 W124 W108 W106 W105 W120 W122 R225 R226 W123 W118 W101 41

35、 58 41 58 14 85 14 85 14 85 14 85 R216 R202 HPFOFF STMONO OFFON ABA Bch LOW PASS Ach INPUT SENS Ach HI PASS B.B. OFFHPF LPF 200mV 5V MONOST 1 200mV 5V 50Hz 200Hz 50Hz 200Hz 50Hz 200Hz 1 13 BchAch Bch INPUT SENS Bch HI PASS C118 C117 C232 C132 W69 W68 W50 W65 W38 W35 W52 W46 W45 W33 W42 W43 W51 W12 W

36、34 W23 W28 W1 W30 W36 W55 W32 W57 W61 W29 W6 W60 W37 W13 W53 C111 C112 C209 C210 C215 C216 C217 C218 C220 W2 W31 W10 W54 W58 W64 W66 W11 W21 W67 W22 W63 W3 W62 W49 W41 W17 W20 W19 W59 W56 W48 W39 W7 W44 W15 W70 W5 W16 W47 W14 W40 W8 W18 W27 W4 VR4 VR1VR2 VR3 VR5 36524136425136425136425136425 46 13 6

37、10 64 31 5 64 31 1 13 46 64 31 17 162 IC1 IC4 IC6 IC5 IC7 IC8 CN3 S4 CN1 S1 S2 S3S5 S6 PREAMPLIFIER UNIT X08-4200-10 (J76-0070-02) D-GND LOGO-LED 15V FAN+B AMP-BL ISO-BR +15V A-ISO GND-2 AMP BR AMP-AL ISO-AR ISO-BL A-ISO-GND-1 B-ISO-GND-2 B-ISO-GND-1 AMP-AR ISO-AL TP177 TP178 TP259 TP176 TP7 TP181 T

38、P265 TP4 TP5 TP6 TP9 TP15 TP175 TP179 TP180 TP253 TP270 TP186 TP187 TP301 TP300 TP302 TP234 TP251 TP255 TP256 TP257 TP258 TP262 TP263 TP266 TP267 TP268 TP269 TP264 X08-4200-10 Ref. No.Address IC16M IC44M IC56N IC64N IC73N IC83M PC BOARD (FOIL SIDE VIEW) Refer to the schematic diagram for the values

39、of resistors and capacitors. KAC-8402/8452 7 ABCDE 1 2 3 4 5 6 7 -15.6V 15.6V -15.6V 15.6V (X09-5840-xx) (A/2) A+B LINE IN D102 LR J1 D101 (3/4) (4/4) IC1 (2/4) IC1 IC1 (1/4) IC1 D107D100 D300 (4/4) (3/4) D302 IC2 D301 IC2 (2/4) IC2 IC2 (1/4) D295D229 Q202 Q282 Q242 Q241 Q280 Q204 D251 D152 Q201Q203

40、 D430D495 Q482 Q444 Q481 Q443 Q404Q402 D458 D457 Q403Q401 Ach Bch B A LINE OUT ISO MUTEATT POWER AMP ISO POWER AMP ATTMUTE J2 SP INPUT TP32 10K10K +15V TP71 R102 1 2 7 3 8 9 10 TP23 10u50 C104 1K R104 10K TP24 R103 10K R172 1K TP70 R106 TP64 R105 C103 10u50 1K R170 TP63 -15V R124 1K R108 12K 9 10 8

41、TP72 R100 C100 1000P TP65 12K R107 47P C134 R110 10K R111 47P C133 10K 6 5 7 R109 10K R123 10K 62 C132 100P R126 10K C131 100P R125 10K 10K C114 15P TP73 12 13 11 TP74 TP68 C113 15P 14 TP75 C116 10u50 4 TP69 5 TP66 43 10u50 C115 1 6 4 5 TP25 2.2K R196 1000P C126 10u50 + C150 470P C156 10u50 C350 300

42、 R398 R396 470P C356 1000P C326 2.2K TP28 TP178 0.01 C107 C124 0.01 TP176 TP27 TP26 0.01 C33 0.01 C34 15P C105 15P C106 1000P C102 1000P C101 1K R101 13 24 79 810 5 6 TP31 10u50 C112 10u50 C111 82K R114 51K R118 51K R120 82K R116 2.2K R122 2 4 TP29 TP30 C110 10u50 C109 10u50 R119 R121 2.2K 51K 51K R

43、117 R115 8 82K 10 82K R113 G R L 0.01 C324 TP175 R322R321 TP33 TP34 TP35 TP36 7 82K R313 2.2K R317 51K C309 10u50 9 R314 R315 82K 82K 82K R316 R318 R319 51K 51K 51K R320 2.2K C312 10u50 C310 10u50 10u50 C311 3 1 1 3 2 10u50 C303 10u50 C304 R304 TP121 R303 TP120 1K 1000P C302 R302 C301 1000P TP122 1K

44、 R301 TP85 -15V R307 15P C305 10K TP84 10K R306 C306 R372 1K 10K TP78 R305 10K 1K 12K R308 10 9 15P TP87 8 1000P C300 R300 TP77 C337 12K TP76 R370 1K +15V 6 5 7 C313 15P R323 10K TP80 12 13 10K R324 47P C334 R310 C314 15P TP86 10K 10K C333 47P R311 0.01 TP82 14 C332 100P R326 10K 11 TP83 C316 22u25

45、R325 C331 100P 10K TP81 TP79 10K R309 2 3 1 4 C315 22u25 G R L 1 3 7 9 2 4 8 10 R112 10K R312 10K R282 10K TP134 R265 R284 10K 10K R266 10K 6.8K 47P 1K1K R206 R228 43K R280 3K R287 6.2K C202 10u50 R256 C204 680P R204 43K TP133 R285 6.2K R227 43K R205 C203 680P R203 43K R208 47 25 C208 220P C264 R210

46、 100 C218 R264 1K 1.5K R212 1K 4700P C206 R207 1KC263 C205 4700P R209 100 220P C207 47 25 R201 3K C201 10u50 R255 C217 47P R263 1.5K R211 1K 6.8K TP136 TP135 R452 TP130 10K R481 10K R465 R484 TP131 10K R466 10K 6.8K R480 3K 6.2K R488 TP129 10u50 C402 680P R428 43K C404 6.2K R486 TP128 R427 43K 680P

47、C403 R401 3K10u50 C401 C418 47P 100 R410 R464 C464 1K R404 43K R406 C406 4700P 1K R408 R412 1.5K 1K 220P C408 47 251K R411 1.5K R463 1K R405 1K R407 R403 43K 100 R409 4700P C405 C463 47 25 C407 220P C417 R451 6.8K 47P TP137 TP132 12 10 7 300 R198 270P C171 8.2 R171 2.2K R194 R395 2.2K 0.01 C338 8.2

48、R371 270P C371 2.2K R195 2.2K R394 9 +15V +15V+15V+15V -15V -15V -15V FL+RL+ RL-FL- RR-FR- RR+FR+ + + + + + + + + + + + + + + + + + + + + + X09-5840-1x A/2 (1/3) KAC-8402/8452 8 FGHIJ 10K 10K 10K 10K 10K 10K 10K 10K 10K 10K 10K 10K 10K 10K 0V 15.6V 35.5V -35.5V 35.5V -35.5V 14. -35.5V 35.5V -15.6V 1

49、5.6V 35.5V Q601 D617 D618 Q625 Q610 Q611 Q612 Q613 Q614 Q602 Q603 Q619 Q620 Q621 Q608 D609 D610 D615 (2/2) (1/2) D613 D614 D602 D603 D619 D601 IC6 IC6 Q622 Q626 Q623 Q627 Q624 Q628 Q217 D261 Q210 Q204 Q206Q208 D251 D152 Q205Q207 Q212 Q213 Q216 D204 Q220 Q218 D206 D253 D254 D255 D205 Q222 Q214 Q221 Q225 Q203 Q209 D260 Q219 Q211 Q215 D203 Q223 Q415 D408 Q416 D460 D463 Q404 Q406 Q412 Q410 D404 Q408 Q418 Q405 D458 D457 Q403 D462 Q407 D459 Q417 D405 Q411 Q409 D403 Q424 Q420 Q426 Q422 D461 Q421 Q425 Q419 Q423 D6 Q2 D4 Q1 D3 D5 Q8Q4 Q6 Q7Q5 Q3 Q10 Q1 Q9 Q211,213,411,412 Q212,219,419