Kenwood-KAC-7252-Service-Manual 电路图 维修手册.pdf

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1、 2005-3 PRINTED IN JAPAN B53-0248-00 (N) 1708 POWER AMPLIFIER KAC-7202/7252 SERVICE MANUAL REMOTE CONTROL StereoBridgeable PoweAmplifie 65 75 85 95 100 50 172 15 11 9 18 40 FREQUENCY LEVEL dB Hz Accessories (W01-1606-05) KAC-7252 (E type,M type) Dressing Panel (A21-4463-02) : KAC-7252 (A21-4525-02)

2、: KAC-7202 Screw set (N99-1759-05) Screw set (N99-1766-05) Connecting cord assy (E30-6145-05) Modular cable (E30-6240-15) Mouting hardware (J22-0301-14) Remote control CONTROL SYSTEM KAC-7202 KAC-7202 KAC-7252 (K type) Dressing Panel (A21-4467-02) : KAC-7252(K type) (A21-4468-02) : KAC-7202 (A21-452

3、6-02) : KAC-7252(E type), KAC-7252(M type) Except KAC-7202 6m 19cm Fuse (40A) (F52-0016-05) Except KAC-7202 This product uses Lead Free solder. RadioFans.CN 收音机爱 好者资料库 KAC-7202/7252 2 BLOCK DIAGRAM 50-200Hz HPF SENS L LINE IN ISO AMP IC12,16 IC1(X08) LINE OUT L 40-100Hz BASS BOOSTMUTE Q201-258 POWER

4、 AMP IC7-9,13,15 Q241,242 MO/ST LINE OUT R LINE IN R MUTEBOOST 50-200Hz 40-100Hz HPF BASS SP IN L SP IN R CONTROL f, GAIN REMOTE CONTROL D.D. CON.AVR GAIN=0-18dB f=40-100Hz SP OUT L SP OUT R P-CON BATT GND 15V LPF 50-200Hz IC1 LPF/OFF/HPF IC3(X08) COMPONENTS DESCRIPTION ADJUSTMENT No.ITEMALIGNMENT P

5、OINTMETHODALIGN FORNOTE IDLEVR1 (Lch) Connect a DC voltmeter After Power on 1 CURRENTVR2 (Rch) between check land2.5mV 5 minutes (Refer to PC BOARD) PREAMPLIFIER UNIT (X08-4190-1x) Ref. No.Application / Function IC1HPF IC2Phase reversal amplifier (Lch only) IC3LPF IC46Bass-boost circuit IC7Bass-boos

6、t mixing amplifier AUDIO UNIT (X09-5830-1x) Ref. No.Application / Function IC1,12,16Input isolation amplifier IC5DC/DC converter IC6Temperature detection comparator IC7,8For adjusting bass-boost f IC9For adjusting bass-boost gain IC13Bass-boost phase shifter IC15Bass-boost mixing amplifier Q1,215V A

7、VR Q38DC/DC converter FET Q912DC/DC converter FET driver Q13,14For controlling DC/DC converter FET driver Ref. No.Application / Function Q101Remote controller reference voltage Q201204Power amplifier initial step differential driving Q209,210Current limiter Q205208Power amplifier second step differe

8、ntial driving Q211,213Temperature detection for idling Q220,222227,229Power amplifier final Q241,242Power amplifier mute Q251258Power amplifier driver Q280,282Power amplifier ATT (-3dB) Q601,615618Power-ON shock preventer circuit Q602P-Con OFF detection Q603Mute drive Q604,605P-Con control circuit Q

9、606Excess voltage detection Q607,608,619,620Temperature detection control circuit Q609Fan power supply Q610Excess current detection Q611,612DC detection Q613,614DC detection for latch Q621,622For LED control Q623Temperature detection control circuit RadioFans.CN 收音机爱 好者资料库 KAC-7202/7252 3 EDCBA 1 2

10、3 4 5 6 7 R603 R604 R601 R623 R624 W277 C57 C53 W276 W53W54 W51 W62 W52 C113 W55 W58 C51 C112 C602 C152 C153 C155 C156 W274 R104 R109 R110R111 R123 R124 R126 R163 C103 C104 C105 C106 C154 C157 R105 R106 R107 R108 R121 R122 R128 R152 R153 R154R155 R156 R157 R158 R159 R160 R161 R162 C59 C58 C60 R131 R

11、132 C117 C118 C109 C115 C110 C116 W151 W152 R133 R134 R135 R136 R139 R140 R146 R145 R143 R144 R148 R147 R129 R130 R137 R141 R142 R138 W61 W56 W57 W59 W60 W275 W257 W251 W264 W266 W273 W265 W256 W254 W263 W259 W260 W267 W258 W253 W262 W255 W252 W261 W268 W269 W270 W271 W272 41 85 14 58 58 14 41 58 41

12、 58 85 14 41 58 W204 W203 W30 W36 W32 W5 VR62 3 1 3 13 42 C604 13 C603 W4 12 W8 W6 W14 W10 W25 W19 W26 W201 W202 0dB VR102 BASS BOOST 18dB W31 C107 VR61 1 W1 C124 W2 C123 W3 C54 W21 W7 C158 W11 LOW PASS W24 W22 W16 W15 HI PASS VR152 146352 VR101 W12 INPUT SENS W20 W18 W9 C108 W17 W13 C52 W23 5614 VR

13、4 32561432 W28 W27 W29 W210 W207 W212 W34 W33 1 10 5 6 50Hz W206 W205 200Hz W209 W211 W208 200Hz 50Hz W39 W35 1 4 3 6 W38 HPF 200 V 5V OFFLPF MONO W37 W40 ST 113 14 VR1-L ISO-L RCA-G ISO-R BB-L -15V BB-R LOGO-LED FAN+B D-GND +15V VR1-R ISO-GND-1 ISO-GND-2 1 TP164 TP11 TP12 TP7 TP9 TP5 TP1 TP2 TP3 TP

14、8 TP10 TP13 TP14 TP15 TP105 TP106 TP107 TP113 TP114 TP115 TP116 TP117 TP118 TP119 TP121 TP126 TP127 TP152 TP153 TP154 TP155 TP156 TP157 TP158 TP159 TP160 TP161 TP162 TP163 TP63 TP64 TP62 TP61 TP60 TP65 43652 D614 CN3 CN1 J1 FREQUENCY BOOST LEVEL S6 S1 CN8 IC1 IC2 IC3 IC4 IC5 IC6 IC7 X08 B/2 PREAMPLI

15、FIER UNIT X08-4190-1x A/2 (J76-0069-12) X08-4190-1x Ref. No.Address IC14C IC24B IC34B IC42B IC52B IC62A IC73A PC BOARD (FOIL SIDE VIEW) Refer to the schematic diagram for the values of resistors and capacitors. RadioFans.CN 收音机爱 好者资料库 KAC-7202/7252 4 FGHIJ 1 2 3 4 5 6 7 4 1 2 9 10 13 24 37 5 62 1 1

16、214 13 C2 C143 C3 C142 C611 C612 R406 C108 C109 C137 C110 R111 C4 C5 C156 C129 C130 C131 C601 C161 C203 C204 C207 C208 C263 C264 C132 C602 C603 C604 C605 C608 C225 C226 R6 R179 R203 R204 C104 C105 C117 C118 C123 C124 C125 C126 C135 C136 C144 C145 C149 C150C151C152 C201 C202 C209 C210 C212 C21 C214 C

17、215 C216 C217 C218 C606 R1R2 R3R4 R29 R101 R102 R107 R108 R122R123 R124 R125 R126 R127 R169 R171 R173 R174 R175 R177 R202 R211 R212 R213 R214 R220 R222 R233 R234 R235 R236 R243 R246 R247 R248 R257 R258 R261 R262 R271 R272 R342 R343 R344 R608 R616 R619 C155 C7 W19 C223 C261 R178 W32 W148 W145 W130 W3

18、3 W47 W58 W46 W50 W52 W59 W68 W138 W24 W25 W57 W56 W65 W114 W26 W31 W28 W29 W35 W36 W45 W49 W30 W96 W42 W43 W38 W150 W161 W151 W41 W3 W39 W104 W123 W102 W78 W79 W120 W107 W126 W110 W135 W132 W67 W144 W115 W72 W139 W40 W44 W71 W131 W146 W127 W73 W142 W147 W136 W133 W75 W143 W82 W54 W129 W149 W99 W101

19、 W51 W53 W83 W1 W17 W55 W69 W27 W159 W137 W157 W125 W6 W113 R184 R185 R186 R187 W70 W109 W98 W103 W134 W124 W88 W89 W90 W85 W80 W121 W87 W154 W152 W100 W86 W158 W112 W116 W119 W118 W111 W108 W97 W95 W155 W156 W105 W94 W81 W92 W77 W128 W48 W61 W66 W122 W64 W60 W63 W62 W74 W84 W93 W91 W141 W76 W160 W1

20、40 W153 C618 C20 VR1 VR2 W610 W611 W614 C170 W370 C120 R119 C103 W376 W373 R104 R114C115 R103 R118R112R109 C119 W378 R130 W380 W382 W379 C167 R128 W381 R168 R113 C116 R110R115 W386 R131 R167 W501 R162 R129 W372 C141 R164 R152 W383 TH602 R163 C140 R161 W502 R151 R135 R658 R606 W368 R617 C609 R634 R62

21、6 R629 R635R622 R156 R176 R148 R153 R154 C610W336 W320 W324 R660 R632 W335 R139 R143 R664 R659 C616 R661 R667 W339 C134 R150 C133 W366 R149 W334 C128 R137 R668 R142 R136 R134 C127 W361 W338 R138 R264 R280 R287 W369 R260 W352 W390 W385 R240 C220 R230 R290 C222 R232 W371 TH202 W327 W328 W329 R201 R285

22、 C206 C228 C205 C227 R289 R249 R207 W3 W31 W357 C219 R625 R229 R120 C102 C101 C157 C111 W389 R105 R116R117 C113 W388 C114 W387 R121 C165 R181 C121 C158 C122 C112 W392 R106 C139 R158 R160 R166 C138 R157 R159 R165 R141 W346 R630 W333 C147 C148 C153 R146 W358 W349 C146 R145 W337 W340 R603 R604 W326 R62

23、7 R633 C168 R147 C166 C169 R170 W321 C607 R631 W322 R614 R609 R605 R613 R607 W319 R602 R610 R611 R612 R615 R666 R662 R663 R665 W332 W363W343 W325 R133 W323 W331 R140 R132 R620 R621 W351 W364 W347 W345 W330 W350 W377 R216 R206 R224 R208 W356 R218 W315 W312 R238 W375 R228 W393 W362 W353 R624 W384 R226

24、 R639 R638 R636 W348 W374 W342 R250 R209 R265 R266 R282 R284 W367 R227 R241 R242 R210 R263 R637 C221 TH201 R231 R205 R225 W391 R239 R251 W359 W344 17 814 17 814 17 814 14 58 14 58 14 58 14 58 14 58 EB EB EB BE BE BE B E BE EB EB EB EB EB EB EB EB EB EB EB EB EB EB B E EB BE EB EB EBBEBEBE BEBEBE EB

25、BE B E BE BE B E BE B E B E BE B E BE B E B EB E BE BE BE BE BE BE Q604 Q609 D615 Q611 Q612 Q613 D152 D203 D204 D205 D206 D261 D601 D602 D603 D605 D613 Q201 Q202 Q203 Q204 Q206 Q20 Q208 Q210 Q Q216 Q217 Q218 Q251 Q252 Q253 Q254 Q255 Q256 Q257 Q258 Q601 Q610 D108 D612 Q607 D610 Q1 Q2 J1 J2 J4 Q211 Q2

26、13 Q220 Q222 Q225 Q226 Q229 CN1 Q224 D106 D102 D107 Q101 Q621 D614 Q606 Q605 Q618 D109 Q242 Q282 D229 D295 Q280 Q241 D253 D103 D104 D105 D101 Q619 Q622 D608 Q602 Q617 Q614 D604 D606 Q603 D607 Q623 Q615 Q616 D4 D254 D3 D255 IC16IC12 IC1 IC15 IC8 IC13 IC9 IC7 AUDIO UNIT X09-5830-1x A/2 (J76-0073-11) L

27、INE OUT LINE IN SPEAKER LEVEL INPUT REMOTE SPE DC L Lch DC voltmeter Rch Rch 2.5mV Refer to the schematic diagram for the values of resistors and capacitors. PC BOARD (FOIL SIDE VIEW) KAC-7202/7252 5 ONMLK 1 2 3 4 5 6 7 13 C16 C1 C8 C9 C17 C615 R5 R6 C13 C15 C211 C213 C215 C217 C18 R7 R8 R28 R29 R15

28、5 R172 R219 R221 R235 R245 R341 R30 W602 W601 C6 L1 L2 W32 W22 W33 W26 W31 W28 W29W30 W2 W1 W12 W13 W14 W15 W16 W102 W4 W9 W8 W7 W11 W10 W20 W18 W21 W117 W106 W37 W27 W23 C19 W5 C617 C20 W606 W607 W609 W603 C10 C11 L3 W608 R643 R647 W354 R646 R657 R651 R648 R21 W308 R26 R17 R18 R13 R12 R14 R11 R618

29、R649R642 R207 W318 W317 C219 R229 R614 W314 R652 R653 C614 R650 W355R656 W302 R19 R27 W304 R23 R22 W305 C14 R24 R20 R25 W301 W313 R623 W310 R16 W307 W306 W303 R15 W309 W311 R9 R205 R223 R239 R251 R215 R217 TH601 R10 TH605 R237 C613 85 41 169 81 BE EB EBEB E B EB BEEB SGDSGDSGDSGDSGDSGD B E BE B E BE

30、 B E B E B E D9 D7 D8 D203 D251 D260 D616 Q205 Q207 Q209 Q215 Q3 Q4 Q5 Q6 Q7 Q8 Q608 D611 J3 D1 D2 P1 1 Q223 Q227 WH1 D5D6 06 Q12 Q9 Q14 Q13 D10 Q10 Q620 D609 D617 Q11 IC6 IC5 X09 B/2 SPEAKER OUTPUTPOWER IN DC voltmeter Lch2.5mV X09-5830-1x Ref. No.Address IC16H IC56N IC65K IC75I IC85I IC95H IC126G

31、IC135H IC155H IC166G Q12H Q22H Q34N Q43N Q54N Q63N Q75N Q84N Q95N Q105N Q115N Q125N Q135N Q145N Q1016I Q2013H Q2023H Q2033I Q2043H Q2053K Q2064G Q2073K Q2084H Q2093K Q2104G Q2112J Q2133G Q2152K Q2164G Q2173I Q2182G Q2204G Q2223G Q2232K Q2244G Q2252I Q2262G Q2272L Q2292J Q2414H Q2424H Q2512I Q2523F Q

32、2532I Q2543F Q2552I Q2564G Q2572I Q2584G Q2804H Q2824H Q6016J Q6026J Q6036J Q6046J Q6056J Q6066J Q6075G Q6082K Q6096I Q6106I Q6116I Q6126I Q6136I Q6146I Q6155J Q6165J Q6176J Q6186J Q6195G Q6202K Q6216I Q6226I Q6236J KAC-7202/7252 6 ABCDE 1 2 3 4 5 6 7 Q610 Q613 Q612 Q611 J2 Q253 Q257 Q251 D101 D102

33、D103 D253 Q282 D295 Q242 D254 Q241 Q201 D229 Q205 Q215 D255 Q280 Q203 Q207 Q217 Q209 Q255 Q616 Q615 Q618 Q617 D106D107 D104D105 Q101 Q621 Q6 D615 D613 D205 D203 D260 D251 D5 D6 D3D4 Q227 Q223 Q2 D108 Q1 Q614 D109 D614 Q225 Q229 J1 Q211 (1/2) IC16 (1/2) IC12 ISO. AMP (2/2) IC12 IC16 (2/2) POP NOISE-M

34、UTE IC1 (1/2) (2/2) IC1 R L Q256 Q204Q202 D206 Q208Q206 Q213 Q210 D261 Q218 Q216 D204 Q226 Q252 Q254 Q222 Q220 Q224 Q258 D152 A LR LINE OUT LINE IN SPEAKER INPUT LEVEL ISO. AMP 15V AVR -15V AVR DC DETEC. POWER AMP IC7 IC8 (X09-5830-xx) (A/2) 10K 10K 10K 1 +15.2V -15.2V -15.2V +15.2V +15.2V -15.2V 47

35、.4V -47.4V -15.2V 15.2V TP1 TP2 TP4 TP5 TP6 TP7 TP8 TP9 TP10 TP11 TP12 TP13 TP15 TP16 TP17 TP18 TP19 TP20 TP21 TP22 TP23 TP24 TP25 TP26 TP27 TP28 TP29 TP30 TP31 TP32 TP33 TP34 TP35 TP38 TP TP47 TP49 TP50 TP51 TP52 TP53 TP54 TP55 TP56 TP58 TP59 TP60 TP123 TP124 TP127 TP128 TP129 TP130 TP131 TP132 TP1

36、33 TP134 TP136 TP137 TP138 TP139 TP TP161 TP162 TP163 TP164 TP165 TP167 TP174 TP175 TP176 TP177 TP178 TP179 TP180 TP182 TP184 TP190 TP193 TP194TP195 TP199 TP200TP201 TP202 TP204 TP207 TP208 TP209 VR1 220 TH201 4 1 2 3 5 6 7 1K R101 10u50 C104 10K R103 10K R104 10u50 C105 1K R102 C103 0.1 130 R107 1K

37、 R105 C109 10u50 C108 83 4 2 13 2 8 4 1 10K R114 R116 10KR117 10K R119 10K 22u35 C117 10K R113 10K R115 6 5 7 5 6 7 22u35 C118 2.2K R132 10K R136 10u50 C156 10u50 C129 10u50 C137 1u50 C161 47K R176 470 R153 1u50 C131 16K R141 10K R137 10u50 C124 10u50 C123 R128 10K C119 150P R129 10K 43K R131 10u50

38、C149 10u50 C150 2.2K R122 2.2K R123 10u50 C151 10u50 C152 150P C166R185 10K R127 47K R187 10K R126 47K 47K R124 C120 150P 0.01 C122 0.01 C121 6.8K R241 6.2K R219 47P C227 10u50 C201 10K R201 10K R285 100 R209 4700P C205 47u25 C207 R203 22K 22K R213 22P C213 22P C217 510 R225 330P C211 1K R211 100u63

39、 C261 1K R205 1K R207 47 R667 47 R668 6.8K R665 6.8K R666 10K R662 10K R663 5.6K R659 0.1 C616 47K R664 47K R660 56K R658 100u6.3 C606 12K R617 R620 47K R621 47K 100u6.3 C608 2.2K R634 1u50 C611 10u50 C612 47u25 C3 47u25 C5 C2 47u25 C4 13K R4 100 R233 470 R261 2W2W 1000P C219 1000P C221 2.2K R249 4.

40、7 R173 4.7 R343 10u50 C215 100 R235 C209 12P 12K R631 12K R632 C607 R635C609 47K R630 2 4 3 1 8 6 5 7 1K R106 14 13 12 11 10 9 8 1 2 3 4 5 6 7 GNDVCC 3 1 5 9 7 4 2 6 10 8 0.01 C157 1 R120 1 4 C115 100P 100P C113 C111 15P 10K R112 5 C116 100P 100P C114 C112 15P 6 130 R108 4.7K R110 0.01 C158 10u50 C1

41、01 1000PC102 1000P TP3 3 2 TP14 1K R111 1000P C110 47K R125 150P C165 10K R184 150P C167 10K R186 R170 10K C170 150P 150P C168 43K R130 10K R181 150P C169 TP187 C9C8R7R8 4700u56 C7 4700u56 C6 16K R150 3.3K R284 10K R266 10K R265 3.3K R282 10K R287 1.5K R263 220P C263 150 R215 6.2K R221 100 R289 2.2K

42、 R237 15K R229R231 4.7 R341 4.7 R172 470 R271 1.8K R239 TP188 33 R251 150 R217 15K 10 R202 2W2W R247 0.1 R245 0.1 R257 0.1R155 0.1 R218 150 C212 TP192 C206 4700P R204 22K 1K R206 R208 1K TP205 R210 100 TP203 C264 220P C208 47u25 R212 R264 1.5K 1K TP206 330P C214 22P TP189 10u50 22P C218 C216 R226 51

43、0 TP191 220 VR2 C222 TP181 R232 1000P 15K C220 R230 1000P 15K TH202 TP183 TP170 TP172 TP173 R246 0.1 TP171 2W R248 0.1 470 R262 470 R272 TP169 2W 2W R258 0.1 2W R243 0.1 TP186 R216 150 TP185TP168 TP198 TP197 100 R236 470P C225 470P100u63 C223C226 AMP L AMP R R227 10KR228 10K 470P C204 470P C203 150

44、R223 150 R224 33 R260 100 R234 1.8K R240 22K R214 12P C210 2.2K R250 100 R290 4.7 R342 4.7 R174 4.7 R344 4.7 R175 2.2K R238 10u50 C202 10K R280 47P C228 6.2K R222 6.2K R220 TP196 6.8K R242 1 2 10K R138 4 1 3 2 VCC 5 6 7 11 14 12 13 GND 9 10 8 10K R139 2.2K R133 10u50 C130 + 16K R149 100P C153 100 R1

45、79 4 3 R169 100 R171 100 R177 100 100P C148 100P C147 100P C146 470K R148 1K R145 10K R1562.7K R154 1K R146 180 R168 180 R167 R147 47u25 R639 10KR638 22K R637 150KR636 100K 13K R3 R5 33KR6 33K 10K R629 6.2K R633 0.0110K 0.01 47K R661 0.01 C610 14 2 1 4 2 8.2 R178 0.1 C127 0.1 C128 16K R140 2 1 +15V

46、+15V +B +B +15V +15V +15V +B +B + +B+B +B -15V -15V -15V +15V +15V -15V -B -B -B -15V 4.7K R109 10K R118 1 R121 10u50 C143 + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + X09-5830-1x A/2 (1/2) KAC-7202/7252 7 JIHGF 1 2 3 4 5 6 7 Q11 Q10 Q12 Q9 Q601 Q13 Q14 D10 Q609 D617 Q602 Q606 Q

47、605 Q603 Q621 Q622 D9 D7 D8 D605 D603 D602 D601 P1 D5 D6 Q604 D612 Q607 Q619 Q4 Q3 D611 D607 D109 D606 D608 D614 D604 Q623 D610 IC13 (1/2) (2/2) IC13 D616 D2 D1 IC6 IC6 (2/2) (1/2) IC15 (1/2) IC15 (2/2) J3 CN1 Q608 Q620 Q5Q7 Q6Q8 J4 (X09-5830-xx) IC1,6,12,13,15,16 : RC4580IDR IC5: TL494IDR IC7-9: NJ

48、M2172V-ZBTE2 Q1: 2SD2012-F Q2: 2SB1375-F Q3-8: 2SK3662-F Q9,12: 2SC4097 Q10,11: 2SA1577 Q13,14,621 : DTA114EUA Q101,241,242,280,282, 602,605,606,616,618 : 2SC4081 Q201-204,217,218,607,608 : 2SA992-A(F,E) Q205-208 : 2SC3478AA(L,K) Q209,210 : 2SA1376AA(L,K) Q211,213 : 2SC3419(Y)-F Q215,216,601 : 2SC18

49、45-A(F,E) Q220,223,224,227 : 2SC4467NF Q222,225,226,229 : 2SA1694NF Q251,253,256,258 : 2SC2235-F Q252,254,255,257 : 2SA965-F Q603,614,615,617 : 2SA1576A Q604: 2SB1241 Q609: 2SD1863 Q610-613 : 2SC945AA(Q,P) Q619,620,622,623 : DTC114EUA D1,2: RM4ZLF-J1NF D3,4: 02DZ16F-Y D6: FRH10A20 D7-9,108,152,203-206, 251,260,261,605, 601-603,610-613,615, 616: 1SS133 D10,101,102,104-107, 229,253-255,295,617 : LM1MA142WK-G D103: UMZ6.8N D109: 02DZ5.1F-Y D604,614 : 02DZ10F-Y D606: 02DZ15F-Y D607: 02DZ6.8F-Y D608: 02DZ12F-Y GND LINE SIGNAL LINE B LINE B LINE 2/2 X08-A/2 CN8 2/2 X08-B/2