Kenwood-KACX-20-Service-Manual 电路图 维修手册.pdf

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1、 2006-12 PRINTED IN JAPAN B53-0484-00 (N) 584 POWER AMPLIFIER KAC-X20 SERVICE MANUAL This product uses Lead Free solder. Accessories (W01-1606-05) Screw set (N99-1794-05) Dressing Panel (A21-6570-01) Fuse (30A) (F52-0015-05) RadioFans.CN 收音机爱 好者资料库 KAC-X20 2 BLOCK DIAGRAM L IC1 40-200Hz HPF 40-200Hz

2、 LPF IC3 MO/ST IC12 ISO AMP L LINE IN LINE OUT LPF/OFF/HPF FILTER IC2 15,25Hz ISF IC4,5 IC7-9,13.15 BASS 40-100Hz BOOSTMUTE Q241 Q201-229 POWER AMP SP OUT L OFF/15/25 ISF SENS -1 40-200Hz LINE OUTR IC16 ISO AMP LINE INR HPF IC1 SP OUT R 40-100Hz 15,25Hz IC4,5 IC2 ISF BASS BOOST Q201-229 MUTE Q242 Q6

3、01-606 CONTROL IC5,Q3-14 D.D. CON. P-CON BATT GND Q1,2,16-18 AVR f,GAIN CONTROL REMOTE GAIN=0-18dB f=40-100Hz 15V (X08-432) COMPONENTS DESCRIPTION PREAMPLIFIER UNIT (X08-4320-10) Ref. No.Application / FunctionOperation / Condition / Compatibility IC1HPF IC2Phase inversion amplifier (Lch only) IC3LPF

4、 IC4I.S.F 15Hz IC5I.S.F 25Hz AUDIO UNIT (X09-8570-10) Ref. No.Application / FunctionOperation / Condition / Compatibility IC5DC/DC converter IC6Temperature detection comparator IC7,8,13Bass boost amplifier IC9For bass boost gain and frequency adjustments IC12,16Input isolation amplifier IC15Bass boo

5、st mix amplifier Q1,215V AVR Q38FET for DC/DC converter RadioFans.CN 收音机爱 好者资料库 KAC-X20 3 Ref. No.Application / FunctionOperation / Condition / Compatibility Q912FET driver for DC/DC converter Q13,14FET driver control for DC/DC converter Q15Temperature detection control circuit Q16,1715V for AVR con

6、trol Q1815V AVR constant current Q201204Power amplifier initial stage differential operation Q205208Power amplifier second stage differential operation Q209,210Current mirror Q215218Current limiter Q219Shock noise prevention circuit Q220,222227,229Power amplifier final stage Q241,242Power amplifier

7、mute Q243,244Power amplifier initial stage constant current Q281284Power amplifier ATT Q601,615618Shock noise preventing circuit when power is turned on Q602P-Con OFF detection Q603Mute driver Q604,605P-Con control circuit Q606Over voltage detection Q609Power supply for fan Q610Over current detectio

8、n Q611,612DC detection Q613,614DC detection For latching Q621,622For LED control COMPONENTS DESCRIPTION ADJUSTMENT NO.ITEM ALIGNMENT METHODALIGN FORNOTE POINT VR1 (Lch-1)Connect a DCAfter Power on 5minutes 1 IDELVR3 (Lch-2)voltmeter between 2.0mV Since there are interferences between Lch-1 and CURRE

9、NTVR4 (Rch-1)check landLch-2, or between Rch-1 and Rch-2, please repeat VR2 (Rch-2)(Refer to PC BOARD)1 and 2 several times for adjustment. RadioFans.CN 收音机爱 好者资料库 KAC-X20 4 ABCDE 1 2 3 4 5 6 7 R1 R31 R45 R51 R120 R267 R268 R637 R32 R121 R52 R636R4 R280 R629 R660 R664 R406 R622 R626 R610 R612 R615 C

10、108 R152 R167 R215 R216 R217 R218 R608 R609 R661 R669 R168 C146 C147 C148C153 C101C102 C103 C110 R103 R104 R107R108 R112 R113 C41 C42 R116 R117 C113 C114 W345 C138C139 C203 C204 C225 C226 C263 C264 C609 C610 C614 C616 R2 R47 R48 R43 R44 R46 R165R166 R203 R204 R227 R228 R286 R606 R613 R614 R633 R634

11、R646 R649 R659 R665 R666 R667 R668 C21 C22 C39 C40 TH601 C55 C56 C111 C112 C115 C116 C141 C205 C206 C23R36 C211 C212 C213 C214 C217 C218 C220 C221 C222 C227C228 C607 C613 13 C901 C902 R33 R40 R41 R105 R106 R109 R110 R115 R118 R119 R136 R137 R157 R158 R160R163 R164 R205 R206 R207 R208 R209 R210 R219

12、R220 R221 R222 R223 R224 R230 R231 R232 R234 R235 R236 R238 R240 R241 R242 R249 R250 R253 R254 R262 R263 R264 R265 R266 R272 R273 R274 R275 R276 R282 R284 R285 R287 R288 R289R290 R603 R604 R605 R607 R611 R617 R618 R619 R620 R621 R623 R624 R627 R628 R630 R631 R632 R635 R638 R639 R643 R647 R648 R651 R

13、652 R653 R656 R657 R658 R662 R663 W344 C140 C133C134 C127 C128 R226R260 R132 R133 R149 R150 R159 R142 W348 R143 R140 R141 R39 R38 R134 R138 R135 R139 R37 W341 W334 W312 R3 R114 W322 W342 W311 W329 W316 W313 W330 W338 W335 R244 R252 C54R50 R625 W315 W343 W325 W331 W326 W321 W319 W318 W352 W350 W349 W

14、351 W347 W320 W323 W339 W327 W317 W324 W314 W328 W332 W333 W336W337 W340 W346 R111 C106C109 R122 C107 R151 14 85 14 58 58 14 85 41 85 41 148 71 814 17 IDLE R2 IDLE R1 RED W98 C2 C12 C224 W109 C3 C5 C611 C617 C618 W150 W63 C606 W69 W66 R5 C58 R170 13 42 C137 C57 C143 C142 W68 C229 R901 C4 C20 C129 W1

15、78 W123 C156 W101 C207 C208 C223 C601 C602 C603 C604 C605 C608 W155 R179 W96 W90 W86 C104 C105 C117 C118 C125 C126 C135 C136 C144 C145 C201 C202 C215 C216 R29 R101 R102 R169 R171 R243 R246 R247R248 R258 R616 W175 W65 W177 W127 R212 R211 R214 W169 W100 C43 W176 113 214 C53 C44 W99 W102 W103 C210C209

16、R201R202 R213 R161 R162 W83 W104 W62 W163 W59 W58 W80 W141 W84 W105 W89 W114 W106 W170 W113 W162 W154 W168 W146 W156 W142 W161 W160 W61 W144 W71 W76 W77 W79 W67 W122 W135 W82 W119 W64 W110 W81 W111 W70 W115 W117 W120 W152 W159 W132 W131 W133 W129 W137 W138 W124 W125 W60 W126 W147 W145 W148 W87 W91 W

17、85 W72 W73 W74 W75 W97 W116 W118 W121 W108 W112 W92 W93 W94 W95W78 W149 W143 W153 W167 W130 W164 W88 W174 W172 W136 W139 W107 W171 W151 W140 W134 W157 W128 W166 W165 W173 W158 EB BE BE BE BE EB EB BE BE BE BE BE BE BE BE BE BE BE SD EBEB BC K A B E EBC K A B E E BC K A B E EEC B E K B A EC B E K B A

18、 G BE 14 85 BE BEBE BEBE BEBE B E BE BE BE BE B EB E B E BEBE B BE E B E B EB E BE D101 D201 D109 D102 Q621 D103 D3 D604 D608 D614 Q17 Q241 Q242 Q281 Q282 Q283 Q284 Q602 Q605 Q606 Q622 D229 D253 D254 D255 D262 D295 D606 D607 D609 Q16 Q243 Q244 Q603 Q614 Q615 Q616 Q617 Q618 Q219 Q1 Q2 Q222Q225 Q226 Q

19、610 Q604 Q609 Q220Q224 D108 D611 D615 D617 Q611 Q612 Q613 D2 D4 D152 D202 D204 D205 D206 D208 D209 D210 D251 D260 D261 D601 D602 D603 D605 D610 D612 D613 D616 J4 Q201 Q202 Q203 Q204 Q205 Q206 Q207 Q208 Q209 Q210 Q216 Q217 Q218 Q601 Q18 P1 D618 J1 CN1 WH1 IC12 IC16 IC6 IC13IC15 IC8IC9 IC7 AUDIO UNIT

20、X09-8570-10 A/2 (J76-0346-11) X09 B/2 VR4 VR2 DC voltmeter Rch-22.0mV DC voltmeter Rch-12.0mV PC BOARD (FOIL SIDE VIEW) KAC-X20 5 JIHGF 1 2 3 4 5 6 7 X09-8570-10 Ref. No.Address IC55I IC64D IC76C IC86D IC96D IC125B IC135D IC155C IC165C Q12D Q22E Q33H Q44H Q54H Q64H Q74H Q85H Q95I Q105I Q115H Q125I Q

21、135I Q145H Q155I Q162D Q172D Q182D Q2014C Q2024C Q2034C Q2044C Q2053C Q2063C Q2073C Q2083C Q2093C Q2103C Q2152G Q2164C Q2172E Q2182C Q2194C Q2204B Q2222C Q2232G Q2244B Q2252E Q2263B Q2272G Q2292F Q2414C Q2424C Q2434C Q2444C Q2814C Q2825C Q2834D Q2845C Q6015D Q6025E Q6035D Q6045F Q6055F Q6065E Q6096E

22、 Q6103E Q6115E Q6125E Q6135E Q6144E Q6153D Q6163D Q6173D Q6183D Q6215E Q6225E R35 R49 C14R9R10 R15 R16 R18 R22 R24 R34 R614 TH602 C219 C221 R11 SDGSDGSDGSDGSDG SDG R12 R13R14 R17 R19 R20 R21 R23 R25 R26 R27 R53 R54R55R56 R57 TH605 R229 R233 R237 R239 53 R261 R271 R611 R620 R621 R650 R653 R656 W304 R

23、251 R225 W301 W312 W311 W303 W309W305 W307W308 W302 W310W306 916 18 IDLE L1 IDLE L2 C6 R6 C10 C11 L3 C16 R5 C1 C8 C9 C17 C19 C608 C24 C13 C15 C18 R7R8 R28 29 R30 R155 R245R257 W1 W3 W7 W8 W9 W18 W10 W11 W12 W13 W14 W15 W16 W17 W4 W5 W59 W58 W39 W41 W35 W37 W38 W40 W43 W44 W46 W48 W52 W54 W34 W21 W20

24、 W19 W50 W53 W47 W57 W36 W28 W61 W22 W32 L1 W2 W60 C7 W49 W51 W45 W605 W603 W604 W602 W601 W25 W26 W27 W33 W24 W29 W30 W31 W23 W6 W42 W56W55 L2 BE BE EB BC K A B E EEC B E K B A EC B E K B A BE B EB E BEBEBEBE B EB E Q9Q12 Q15 Q10 Q11 Q605 Q606 D10 D606 Q13 Q14 D6 5 Q229 Q604 D5 Q223 Q227 D1 D11 J3

25、D9 Q3Q4 Q5Q6Q7Q8 D7 D8 D203 D207 D209 D612 Q215Q217 P1 CN2 IC5 VR1 VR3 DC voltmeter Lch-22.0mV DC voltmeter Lch-12.0mV Refer to the schematic diagram for the values of resistors and capacitors. KAC-X20 6 KLMNO 1 2 3 4 5 6 7 R4 R1 R2 R3 R11 R12 R8 R9 R10 R14 C3 R15R16 R123R124 R126 R129 R130 R147 R14

26、8 R631 C4 C602 C2 C153 C156 R104 R109 R110 R111 R131 R132 R135 R136 R139 R140 R141 R142 R143 R144 R163 C1 R145 R146 C5 C6 C103C104 C105C106 C154 C157 R5 R6 R7 R13 R17 R18 R105R106 R107R108 R121 R122 R128 R133 R134 R137 R138 R152 R153 R155 R156 R157 R158 R160 R161 R162 R601 R603 R630 W342 W330 W341 W

27、340 W336 W309 W339 W334 W313 W323 W337 W335 W329 W314 W320 W318 W322 W324 W306 W305 W312 W303 W301 W302 W315 W307 W304 W332 W316 W343 TP167 W321 W311 W310 W308 W317 W331 W333 W338 W319 W326 W327 W325 W328 W34 1 45 8 4 1 8 5 4 1 8 5 8 54 1 8 54 1 VR101 VR152 VR4 MONO ST OFF HP LPOFF 15 25 113 1213 20

28、0Hz40Hz 0.2V 5V 40Hz 503 503103 HPFSENS ISF FILTER LPF C51 C54 C52 C53 C603 C604 C107 C108 C109 C110 C111 C112 C113 C114 C115 C116 C117 C118 C119 C120 C121 C122 C123C124 C158 W12 W26 W28 W27 142 W23 W25 W24 W19 W20 W17 W13 W16 W15 W11 W10 W18 W4 W3 W5 W8 W9 W1 W21 C7 W7 W6 W2 W22 C8 200Hz D614 CN8 C

29、N1 CN3 S1S6S7 IC1 IC3 IC4 IC5 IC2 PREAMPLIFIER UNIT X08-4320-10 (J76-0351-12) TP5 TP106 TP2 TP1 TP3 TP107 TP126 TP127 TP105 TP113 TP115 TP116 TP119 TP114 TP117 TP118 TP121 TP159 TP154 TP155 TP156 TP157 TP161 TP162 TP153 TP158 TP160 TP163 TP14 TP7 TP13 Refer to the schematic diagram for the values of

30、 resistors and capacitors. PC BOARD (FOIL SIDE VIEW) X08-4320-10 Ref. No.Address IC14N IC23N IC35N IC45L IC56L KAC-X20 7 ABCDE 1 2 3 4 5 6 7 D103 D254 Q207 D102 Q283 Q615 D262 Q226 Q209 D101 Q222 Q205 Q1 Q224 Q2 Q284 Q241 Q216 Q210 Q227 Q3 Q203 Q217 D6 Q282 Q616 Q244 Q17 Q223 Q4 Q5 D5 D260 D255 Q16

31、Q220 Q218 Q215 D295 Q206 Q281 Q202 Q243 D253 Q225 Q242 Q229 Q201 D229 Q204 Q6 Q208 J1 Q18 Q Q219 J4 D4 D204 D208 D206 D210 D205 D209D207 D203 D611 D617 D2 D3 D109 D108 (2/2) (2/2) (1/2) (2/2) (1/2) (1/2) D201D202 D251 D152 D261 IC12 IC16 IC12 IC16 ISO. AMP IC7 IC7 RL IN OUT LR REMO. ATTMUTE DC/DC CO

32、NVERTER MAIN AMP TP223 TP9 TP8 TP171 TP184TP179 TP216 TP189 TP128 TP226 TP5 TP170 TP196 TP162 T TP205 TP217 TP4 TP46 TP54 TP125 TP3 TP183 TP209 TP22 TP163 TP221 TP131 TP193 TP1 TP17 TP225 TP182 TP200 TP121 TP168 TP195 TP224 TP16 TP127 TP178 TP204 TP50 TP202 TP35 TP169 TP188 TP122 TP19 TP192 TP191 TP

33、7 TP215 TP53 TP174 TP199 TP181 TP130 TP207 TP14 TP176 TP177 TP187 TP67 TP218 TP TP203 TP2 TP220 TP213 TP172 TP55 TP198 TP120 TP180 TP206 TP185 TP56 TP190 TP222 TP214 TP13 TP186 TP197 TP129 TP15 TP6 TP194 TP173 TP126 TP175 L3 1.4mA 4 3 2 1 10u50 C104 470P C101 470P C102 10K R108 1.5K R105 1K R102 10u

34、50 C105 1K R101 1.5K R106 1000P C110 7P C23 100 R36 10K R115 10K R112 100P C114 100P C113 C115 100P C116 100P 22u50 C118 100 R41 22u50 C117 100 R40 10K R114 10K R137 7P C107 220 R122 2.2 R120 2.2 R121 39K R140 10u50 C129 10u50 C156 470 R39 R179 10 R171 10K R169 10K C147 100P C148 100P C153 100P 10u5

35、0 C53 10u50 C44 10u50 C137 47 R11 R54R55 47 R12 3300u16 C10 1000P C9 1/2W 10 R8 47u25 C2 10u50 C12 18K R1 10K R2 47u25 C4 4700u56 C6 4700u56 C7 12K R4 1u50 C611 10u50 C617 10u50 C618 47u25 C3 10u50 C5 150K R637 100 R289 10u50 C215 1000P C219 2.2K R229 2W 0.1 R155 VR1 220 VR3 220 2W 0.1 R245 150 R251

36、 2W 0.1 R247 2W 0.1 R257 1000P C221 2.2K R231 100 R235 470P C225 10P C209 4.7K R219 4.7K R221 3.9K R268 3.9K R267 100u10 C224 100 R215 100 R217 4.7K R241 4.7K R286 47P C227 10u50 C201 1K R288 1K R211 47u25 C207 1.5K R205 1.5K R207 100 R223 10 R280 100u63 C223 100u63 C229 100 R224 470P C226 22P C214

37、22P C218 1.5K R206 1.5K R208 47u 25V C208 1K R212 4.7K R222 4.7K R220 22K R214 100 R290 10u50 C202 4.7K R242 100 R254 10u50 C216 VR2 220 220 VR4 1000P C222 1000P C220 2.2K R232 2.2K R230 150 R260 2W 0.1 R248 2W 0.1 R246 150 R226 2W 0.1 R258 2W 0.1 R243 100 R216 100 R234 100 R240 47 R668 47 R667 47K

38、R620 12K R617 100u10 C606 14 13 12 OP+INB OP-INB 1 2 3 OP+INA OP-INA 2 1 OP+INAOP+INB 3 4 5 6 7 GNDV+ EVOUTA OP-INA OPOUTA VCNTA VCNTB EVOUTB OPOUTB OP-INB VREF REFIN 13 14 11 12 8 9 10 820 R3 86 4 5 7 10K R136 2 3 1 4 2 3 1 8 1 4 8 3 2 12K R109 6 5 7 15P C111 10K R107 15P C901 15P C902 15P C112 10K

39、 R103 10K R104 7P C55 100 R47 100 R48 7P C56 7P C106 220 R111 C109 0.01 C108 0.01 1K R901 7P C39 7P C40 R118 10K R119 10K 10P C41 330 R151 10P C42 330 R152 5 6 7 10K R117 10K R116 10K R113 R110 12K 0.1 C103 1.5K R132 1.5K R133 0.047 C127 470 R38 0.047 C128 39K R141 4.7K R139 4.7K R138 100P C146 R44

40、24K R43 24K 22K R170 18K R274 22K R287 10K R227 10K R228 TP201 TP208 22K R285 18K R273 10K R275 10K R282 10K R265 10K R276 10K R284 10K R266 -3dB -1.5dB MUTE 22K R203 220P C203 100 R209 4700P C205 330P C211 1.5K R263 220P C263 10K R201 22P C213 22P C217 22K R213 4700P C206 100 R210 10K R202 220P C20

41、4 22K R204 47P C228 330P C212 220P C264 1.5K R264 TP219 10K R244 100 R218 100 R253 220 R261 2.2K R249 2.2K R237 100 R233 100 R239 220 R271150 R225 10P C210 100 R236 2.2K R250 220 R262 220 R272 2.2K R238 47K R252 0.01 C21 10K R31 3.3K R638 3.3K R628 100K R636 100 R37 3.3K R669 33K R5 33K R6 1/2W 10 R

42、7 1000P C8 100 R33 0.01 C22 R32 10K 10K R63910K R623 2200P C18 1/2W 10 R30 R629 47K R621 R665R666 MUTE -3dB -1.5dB-1.5dB -3dB +15V +15V +15V -15V -15V -15V +47.4V +47.4V +47.4V -47.4V -47.4V -47.4V + + + + + + + + + + + + + + + + + + + + + + + + + + + + + IC9IC8 AUDIO UNIT (X09-8570-10) -15.2V 15.2V

43、 -15.2V 15.2V 15.2V 2.5V 2.5V 2.5V 2.5V 5.0V 2.5V 0V 2.5V 2.5V 2.5V 2.5V 0-3.0V 5.0V 15.2V 0V 2 5V 2.5V 2.5V 2.5V 2.5V 2 5V 5mA 2.5mA 2.5mA 47.4V 15.2V -47.4V -15.2V 5mA X09-8570-10 (1/2) KAC-X20 8 JIHGF 1 2 3 4 5 6 7 Q602 Q622 Q14 Q615 Q603 Q7Q3 Q8 Q601 Q12 Q10 Q616 Q9 Q605 D10 Q4 D613 Q5 Q15 Q609

44、Q613 Q604 Q621 Q617 Q612 D615 Q618 Q606 Q611 Q11 Q13 Q6 Q614 P1 Q610 D8 D9 CN1 J3 D1 D11 D607 D606 D605 D604 D603 D602 D618 D608 D601 D614 POP NOISE-MUTE D610 D612 D616 D7 IC6 IC6 1.5V 1.9V (2/2) (1/2) (1/2) (2/2) IC13 IC15 IC13 IC15 (1/2) (2/2) 1.1V SP OUT CN2 IC5: TL494IDR IC6,7,12,13,15,16 : BA45

45、60RF IC8,9: NJM2172V-ZBTE2 Q1: 2SD2012-F Q2: 2SB1375-F Q3-8: STP60NF06FP Q9,12: 2SC4097 Q10,11: 2SA1577 Q13,14,621: DTA114EUA Q15,16,241,242, 281-284,602,605,606, 616,618: 2SC4081 Q17,219,243,244,603, 614,615,617: 2SA1576A Q18: 2SK246(BL)-F Q201-204,217,218 : 2SA992-A(F,E) Q205-208: 2SC3478AA(L,K) Q

46、209,210: 2SA1376AA(L,K) Q215,216,601,610: 2SC1845-A(F,E) Q220,223,224,227: TRAIT9N Q222,225,226,229: TRAIT9P Q604: 2SB1241 Q609: 2SD1863 Q611-613: 2SC945AA(Q,P) D1,11: RM4ZLF-J4NF D2,4,7-9,108,152,202-210, 251,260,261,601-603,605,610-613, 615-618: 1SS133 D3,109,201 : UDZS5.1B D5: FCH10A20 D6: FRH10A

47、20 D10,101,253,255 : LM1MA142WK-G D103: UMZ6.8N D604,614: UDZS10B D606: UDZS15B D607: UDZS6.8B D608: UDZS12B GND LINE SIGNAL LINE B LINE B LINE DTC114EUAQ622: X08- CN8 2/2 BASS BOOST FAN+B DC OFFSET DET DC/DC CON. TEMPERATURE DET. COMPARATOR D102,229,254,262,295 LM1MA142WA-G: TP75 TP98 TP144 TP87 TP

48、155 TP136 TP157 TP102 TP150 TP118 TP95 R643 220K 162 TP137 TP99 TP72 TP149 TP114 TP90 TP84 P163 TP141 TP156 TP41 TP70 TP85 TP146 TP101 TP117 TP92 TP69 TP148 TP134 TP107 TP97 TP151 TP112 TP88 TP167 TP103 TP94 TP119 TP83 TP153 TP108 TP71 TP165 TP89 TP158 TP161 TP82 TP104 TP145 TP96 TP142 TP111 TP86 TP

49、79 TP152 TP116 TP164 TP91 W605 470 R39 10u50 C43 30K R142 10u50 C135 330 R157 0.1 C138 0.1 C139 330 R158 10u50 C136 15K R150 10u50 C126 3K R159 3K R160 10u50 C125 22K R161 10u50 C144 10u50 C145 15K R149 22P C140 22K R163 10u50 C142 10u50 C143 2.2 R46 220K R647 2.2 R52 3.3K R618 2.2 R51 10u50 C57 10u50 C58 4.7K R651 3.3K R624 4.7K R648 0.01 C614 2.7K R646 3.3K R652 3.3K R653 4.7K R656 10u50 C24 2.2u50 C13 330K R20 47u25 C15 1K R27 100K R22 0.1 C14 10K R19 1000P C17 10u50 C16 1 R49 47 R11 47 R54 47 R56 4.7K R9 4.7K R10 47 R57 47 R55 47 R12 3300u16 C11 0.01 C60747K R664 47 R668 47 R667