Kenwood-KAC-6202-Service-Manual 电路图 维修手册.pdf

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1、 2005-5 PRINTED IN JAPAN B53-0286-00 (N) 1708 POWER AMPLIFIER KAC-6202 SERVICE MANUAL This product uses Lead Free solder. Accessory (W01-1607-05) 190mm Screw set (N99-1587-05) Fuse (F52-0014-05) Connecting cord assy (E30-6145-05) Stereo/Bridgeable PoweAmplifie Stereo/Bridgeable PoweAmplifie MAXIMUMP

2、OWER KAC-6202 (E type,M type) KAC-6202 (K type) RadioFans.CN 收音机爱 好者资料库 KAC-6202 2 BLOCK DIAGRAM COMPONENTS DESCRIPTION Rch IN Lch LINE Rch Lch HPF LPF(+6dB) LPF(+6dB) HPF MUTE AMP ISOLATION +6dB P. AMP +6dB PHASEST/MONO SW SW HPF/OFF/LPF INPUTOUTPUT 6dB6dB-270dB(LPF:+6dB)26dB INVERT L R RCA IN SPEA

3、KER X09-590 AUDIO UNIT (X09-5900-10) Ref. No.Application / FunctionOperation / Condition / Compatibility IC1Buffer amplifier+6dB, low-impedance conversion IC2Isolation amplifierCommon mode noise filtering IC3Buffer amplifier+6dB,Rch reversal IC4Reversal buffer amplifier+6dB, reversal amplifier IC5,6

4、HPF/LPFFitter with variable cutoff IC7DC/DC converterOscillation and control of DC/DC converter Q1,2SwitchingTransistor for ON/OFF control of latter step driver Q36Drive transistorFET driver for the latter steps Q7,8Switching FETSwitching FET for the secondary power supply Q201,202For mutingTransist

5、or for muting B-class step Q203206Differential amplifying transistorTransistor for first step differentiation amplification Q207210Differential amplifying transistorTransistor for second step differentiation amplification Q211,212Current mirror loadCurrent mirror load of second step differentiation

6、Q213,214Temperature compensating transistorFor prevention of thermal-runaway of the final transistor Q215218Over current protectionTransistor protection against excess current Q219222Power amplificationFirst step of Darlington power amplification Q223226Power amplificationSecond step of Darlington p

7、ower amplification Q501,502Constant voltage stabilizationTransistor for constant voltage stabilization Q601,602SwitchingTransistor for mute ON/OFF control for B-class step Q603,604SwitchingTransistor for mute control for B-class step Q605SwitchingTransistor for DC protection circuit latch Q606Switch

8、ingFor DC protection latch ON control Q607,608Drive transistorFor DC protection circuit driving RadioFans.CN 收音机爱 好者资料库 KAC-6202 3 COMPONENTS DESCRIPTION ADJUSTMENT No.ItemAlignment pointMethodAlign forNote 1 IDLEVR3 (Lch)Connect a DC voltmeter 2.5mV After Power on CURRENTVR4 (Rch)between emitter re

9、sister5 minutes R278 R277 Q225Q223 VR3Lch Q226Q224 Rch VR4 MINMAX MINMAX DC voltmeter Lch 2.5mV DC voltmeter Rch 2.5mV Ref. No.Application / FunctionOperation / Condition / Compatibility Q609SwitchingFor PULL-DOWN of DC/DC converter 2 pin Q610614SwitchingTransistor for power supply circuit ON/OFF co

10、ntrol Q615SwitchingTransistor for mute ON/OFF control for latter steps D1Circuit protection diodeFor circuit protection at reverse connection of power supply cord D47SwitchingBackflow prevention diode D8,9Rectifying diodeRectification on the secondary power supply side D101103Static protection diode

11、For circuit protection against static D201SwitchingBackflow prevention diode D202,203Operation stabilizer diodeContains thermal fluctuation of transistor Vbe of second step differentiation D204,205Current mirror loadCurrent mirror circuit load D206211SwitchingBackflow prevention diode D501Indicator

12、LEDIndicator for behavior visual check D601Bias diodeBackflow prevention diode D602,606SwitchingBackflow prevention diode D603Level shifterFor DC protection circuit bias D604SwitchingFor turning operation off at P-CON momentary power down D605SwitchingFor turning off operation at BATT excess voltage

13、 and for circuit protection D607Level shifterFor bias of the mute control circuit D608612SwitchingBackflow prevention diode RadioFans.CN 收音机爱 好者资料库 KAC-6202 4 ABCDE 1 2 3 4 5 6 7 PC BOARD (FOIL SIDE VIEW) Refer to the schematic diagram for the values of resistors and capacitors. IC7 AUDIO UNIT X09-5

14、900-10 (J76-0088-11) C602 C604 R7 R9 R11 R14 R15 R22 R23 R26 R612 R615 R624 R626 R630 C9 R1 R2 R3 R4 R6 R8 R10 R18 R19 R20 R21 169 18 R266 R268 R270 R272 R274 R279R280 R284 R611 R613 R614 R623 R625 R627 R628 R629 R631 R632 R636 TH1 W407 W403 W408 W404 W402 W405 W401 W406 W418 W422 W417 W419W420 W397

15、 W398 W400 C613 W410 W409 W421 W411 W413 W415 W414 W416 W395 W207 C1 W152 R634 R638 C2 C5C6 C7 C8 C10 C11 C603 W209 C607 C608 C609 C239C240 1234567 L3 R281 R282 L1 C3 C4 C12 C236C238 C606 R24R25 R275 R278 R285 R287 R621 R622 R633 W187 W186 W185 W171 W197 W198 W183 W200 W174 W173 W179 W184 W167 W161

16、W201 W178 W177 W181 W180 W182 W168 W208 W172 W206 W145 W150 W151 W159 W160 W163 W162 W165 W158 W164 W156 W157 W166 W176 W175 W170 W169 W146 W148 W196 W192 W195 W190 W188 W189 W191 W193 W194 W153 W155 W W154 W205 W199 W202 W203 W204 W149 SDGSDG BE EB EB BEBE BE BE B EB EB EB E B E BE BE B E BE B E BE

17、 BE B E B E BATT-F BATT GND P-CON GND -B +B THERMAL THERMAL R-OUT GND GND L-OUT GND GND Q3Q6 D603 D604 Q4Q5 Q606 Q607 Q608 Q611 Q612 Q613 D605 D7 D211 D607 Q1 Q2 Q605 Q609 Q614 D1 Q610 D5 J3 Q7 Q8 D4 D6 D8 D9 D209 D602 D606 D608 D609 D610 P1 Q216Q218 Q222 Q615 Q226 Q223 X09-5900-10 Ref. No. Address

18、IC13I IC23H IC34I IC44I IC55H IC65I IC73E Q12D Ref. No. Address Q22D Q33D Q43D Q52D Q62D Q72C Q82B Q2014H KAC-6202 5 JIHGF 1 2 3 4 5 6 7 IC1IC2 IC3IC4 IC5 IC6 C107 C203 C212 W375 W351 W333 R238 R239 R617 C108 C204 C211 R616 C121 C122 C221 C222 C245 R117 R118 R121 R125 R126 R138 R201 R222 R223 R224 R

19、225 R226R227 R234 R235 R236 R237 R601 R607 R608 R609 R292 C119 C120 C105 C106 C109 C110 C118 C101 C102 C207 C208 C209 C210 C223 C224 C227 C228 C229 C230 C242 C243 C244 C901 C902 R103 R104 R105 R106 R107 R108 R109 R110 R111 14 85 14 85 14 85 1 85 14 85 14 4 85 R112 R113 R114 R119 R120 R127 R128 R129

20、R130 R610 R202R203 R204 R205 R206 R207 R208 R209 R210 R211 R212 R213 R214 R215 R216 R217 R218 R219 R220 R221 R228 R229 R230 R231 R232 R233 R240 R241 R242 R243 R244 R245 R246 R247 R248 R249 R250 R251 R252 R253 R254 R255 R259 R260 R261 R262 R263 R264 R265 R266 R267 R268 R269 R270 R271 R272 R273 R274 R

21、283 R284 R289 R290 R602 R603 R604 R605 R606 R618 R619 R620 R637 W312 W314 W342 W386 W383 W365 W357 W380 W381 W382 W362 W363 W366 W370 W376 W368 W377 W384 W385 W387 W360 W379 W353 W358 W361 W373 W378 W394 W390 W397 W391 W389 W304 W369 W359 W300 W352 W348 W354 W335 W341 W347 W308 W371 W322 W343 W318 W

22、302 W306 W325 W332 W349 W346 W327 W344 W345 W350 W356 W301 W367 W388 W307 W311 C247 W399 W364 W315 W310 W331 W372 W392 W396 W337 C246 W338W339 W316 W317 W309 W313 W323 W324 W334 W328 W340 W336 W319W320 W326 W321 W305 W303 W355 W330 W412 W329 W374 W393R291 MAXMIN MINMAX Rch Lch 1 C205 C206 C504 C601

23、C505 C605 C117 C225 C226 C233 C234 C502 C503 W106 R133 C103 C104 C111 C112 C113 C114 C115 C116 C241 C213 C214 C215 C216 C219 C220 C231 C232 C235 C237 C238 C606 R101 R102 C611 C612 R256 R257 R258 R276 R277 R285 R286 R288 R505 R506 W119 W135 W131 W145 W133 W132 50 W151 W134 W116 W137 W126 W141 W111 W1

24、23 W127 W128 W136 W139 W143 W144 W138 W122 W129 W125 W115 W103 W108 W109 W130 W105 W102 W114 W146 W112 W147 W148 W101 W113 W110 W124 W121 W117 W100 W107 W118 W120 W140 W142 R131 R132 1 2 9 10 R134 R135 R136 R137 W104 VR3 VR1 VR2 VR4 B BE BE BE BE BEEB BE BE BE BE BE BE BE EB EB EB EB BE B E BEBE BE

25、BE BE B E BE B E BE BE G-G GND -15V +15V RCA-GND GND GND R L VR CONT 20-200Hz HPF/OFF/LPF ST/MONO INPUT SENS SP-IN RCA D501 D101 D102 D503 Q201 Q202 D502 D103 D201 D206 D207 D210 Q203 Q204 Q205 Q206 Q601 Q602 Q603 Q609 Q604 J1 Q501 Q502 D601 D202 D203 D204 D205 D208 J2 Q207 Q208 Q209 Q210 Q211 Q212

26、Q213 Q214 Q215 Q217 Q218 Q219 Q220 Q221 D611 D612 Q22523 Q224 S2 S1 Ref. No. Address Q2093G Q2105F Q2113G Q2124F Q2132G Q2146G Q2153F Ref. No. Address Q2024G Q2033G Q2044F Q2053G Q2064F Q2073G Q2085F Ref. No. Address Q2164E Q2173F Q2184F Q2193F Q2205G Q2213H Q2225E Ref. No. Address Q2232E Q2245H Q22

27、52H Q2266D Q5016I Q5026H Q6015G Ref. No. Address Q6025G Q6035G Q6045G Q6055C Q6065C Q6075C Q6085C Ref. No. Address Q6093F Q6104B Q6113B Q6123B Q6134C Q6144C Q6154C KAC-6202 6 ABCDE 1 2 3 4 5 6 7 X09-5900-10 (1/2) D103 D101 D102 S1 Q205 D202 Q201 D201 Q203 Q207 Q607 Q608 Q50 Q5 R L LINE IN J1 I.S.O A

28、MP (2/2) IC1 IC1 (1/2) IC2 (2/2) (1/2) IC2 ST/MONO INPUT SENS J2 L L R R SP IN D502D503 D602 (1/2) IC3 (1/2) IC4 (2/2) IC3 IC5 (1/2) IC6 (1/2) IC6 (2/2) (2/2) IC5 S2 IC4 (2/2) D204 Q202 Q208 D203 Q204Q206 D205 DC PROTECTI D612 POP NOISE M D601 D611 IC1-6 : RC45801DR IC7: TL4941DR Q1,2: DTA114EUA Q3,

29、6: 2SC4097 Q4,5: 2SA1577 Q7,8: 2SK3662-F Q201,202,601,603, 606-609,611-613 : 2SC4081 Q203-206,602,604,605, 614: 2SA1576A(R,S) Q207-210,215,216,615 : 2SC1845-A(F,E) Q211,212,217,218 : 2SA992-A(F,E) Q213,214: 2SC3419(Y)-F Q219,220: 2SC1627A-F Q221,222: 2SA817A-F Q223,224: 2SC3856NF Q225,226: 2SA1492NF

30、 Q501: 2SD2012-F Q502: 2SB1375-F Q610: 2SB1241 D1: RM4ZLF-J4NF D4-6,202-205,208,209, 601,602,606,608-612 : 1SS133 D7,102,206: LM1MA142WK-G D8: FCH10A20 D9: FRH10A20 D101,201,207,210,211 : LM1MA142WA-G D501: B30-1601-05 D502,503: 02DZ16F-Y D603,607: 02DZ10F-Y D604: 02DZ6.8F-Y D605: 02DZ15F-Y GND LINE

31、 SIGNAL LINE B LINE B LINED103UMZ6.8N: MUTE LPF/OFF/HPF F:VRocnt (50-200Hz) 12dB/oct TP146 TP46 TP33 TP126 TP34 TP117 TP139 TP143 TP122 TP119 TP118 TP123 TP125 TP121 TP115 TP144 TP142 TP2 TP32 TP31 TP6 TP7 TP1 TP10 TP15 TP14 TP8 TP13 TP12 TP41 TP26 VR1 TP40 TP28 TP25 TP24 TP150 TP149 TP153TP154 TP16

32、5 TP156 TP48 TP39 TP45 1K R102 10u50 C104 1K R114 1000P C102 10K R104 1000P C101 1K R101 10K R103 10u50 C103 10K R106 10K R105 15P C106 15P C105 1K R113 R108 10K R107 10K R112 10K R133 1K R111 10K C117 1000P C108 0.01 15P C110 15P C109 47u25 C112 R120 10K C120 100P C119 100P R119 10K 10 R138 0.1 C11

33、8 85 6 7 4 3 2 1 10K R110 0.01 C107 10K R109 8 6 5 7 C122 100PC121 100P R118 10KR117 10K 4 1 3 2 47u25 C111 47K R121 430 R126 R125 430 56 3 12 4 7 9 8 10 2.2K R131 47K R134 R135 47K R136 47K R137 47K R132 2.2K 10u35 C114 10u35V + C113 + 10u35 C115 + 10u35 C116 + 56K R127 56K R128 56K R129 R130 56K 4

34、7u25 C504 + 47u25 C505 + 10u50 C502C503 10u50 + C6135 6K R615 VR2 83 4 2 1 3 2 4 1 8 6 5 7 2 3 8 1 4 1 2 3 4 6 5 8 7 6 5 7 10K R201 10K R292 10K R202 R291 10K C245 47P R203 20K C242 47P 10u50 C205 10K R204 20K R2060.01 C203 0.01 C204 10K R212 10K R208 3K R214 0.047 C207 10u35 C213 100 R218 47K R226

35、10u35 C215 4.7K R220 10u35 C216 4.7K R221 4.7K R224 4.7K R225 47K R222 47K R223 47K R227 2.2K R229 10u35 C214 100 R219 10u50 C206 0.047 C208 10K R213 2.2K R211 R205 10K 20K R207 R209 10K R215 3K C212 0.01 R216 16K R217 16K C209 0.33 0.33 C210 C211 R210 2.2K 0.01 R228 2.2K 5 6 1 2.2K R232 10u50 C219

36、10K R230 100K R234 R236 33K 8.2K R238 150 R248 6.2K R250 47P C246 100 R242 820 R240 4700P C223 820 R244 47u25 C225 100P C227 1.3K R246 150K R617 100K R616 4.7u50 C605 C221 470P 100K 10K R231 R235 TP148 C224 4700P C222 470P R237 33K 100 R241 820 TP164 R243 R245 820 C226 47u25 R247 1.3K C228 100P C220

37、 10u50 R233 2.2K TP152 TP157 R239 8.2K C247 TP155 47P 6.2K R251 150 R249 33K R60 C601 5.6K R601 0.1u50 R602 47K 47u50 C612 R637 33K R603 47u50 C611 51K +15V 15V +B +15V 15V B +B +15V 123 654 5 678910 12 4321 11 + + + + + + + + + + + + + + + + (X09-5900-10) 15.0V -15.0V 15.0V -15.0V 0V 0V 15.0V 15.0V

38、 -15.0V -15.0V 0V 15.0V -15.0V 0V 0V -15.0V 15.0V 0V KAC-6202 7 JIHGF 1 2 3 4 5 6 7 X09-5900-10 (2/2) CAUTION : For continued safety, replace safety criti- cal components only with manufacturers recom- mended parts (refer to parts list). Indicates safety critical components. To reduce the risk of el

39、ectric shock, leak- age-current or resistance measurements shall be car- ried out (exposed parts are acceptably insulated from the supply circuit) before the appliance is returned to the customer. DC voltages are as mea- sured with a high imped- ance voltmeter. Values may vary slightly due to variat

40、ions between indi- vidual instruments or/and units. D202 Q615 Q207 Q209 Q211 D206 D207 Q613 Q219 Q221 D210 Q213 Q217 Q215 Q225 Q223 Q609 P1 Q607 Q606 Q605 Q502 Q501 D8 D9 Q5 Q614 Q8 Q6 Q2 Q7 Q4 Q3 Q1 Q612 Q611 D7 Q610 D502D503 D603 D608 D609 D610 D607 D501 LOGO LED D605 D604 D606 J3 D1 D204 D208 Q21

41、2 Q208 D203 D205 Q210 Q222 D211 Q218 Q226 Q214 Q220 D209 Q216 Q224 OVER CURRENT D6 D5 D4 PROTECTION OP NOISE MUTE Q604 Q601 Q602 Q603 D601 DC/DC CONV. +B SW POWER AMP DC/DC CONVERTER TP46 TP59 TP40 TP242 TP187 TP189 TP185 TP212 TP181 TP197 TP206 TP204 TP211TP208 TP200 TP94 TP199 TP219 TP245 TP233 TP

42、227 TP226 TP230 TP228 TP231 TP232 TP89 TP246 TP239 TP237 TP236 TP238 TP240 TP241 TP243 TP244 TP76 TP48 TP47 TP50 TP44 TP61 TP39 TP45 TP58 TP220 L3 TP60 TP71 TP65 TP67 TP98 TP73 TP66 TP64 TP63 TP69 TP75 TP72 TP77 TP95 TP90 1.5K R15 1.5K R14 56 R18 56 R19 56 R21 56 R20 10 9 3.3K R505 3.3K R506 2200u35

43、 C7 + 2200u35 C8 + + + 10u50 C502C503 10u50 + 1/2W 10 R24 1000P C5 1/2W 10 R25 1000P C6 3300u16 C10 4.7K R22 4.7K R23 + 0.01 C613 12K R613 5.6K R615 2.2K R612 2.2K R638 0.01 C604 100 R633 33u35 C609 820 R634 33K R631 10K R632 33K R627 10K R630 10u50 C608 R614 12K 100u25 C603 C602 0.01 R611 10K 4.7K

44、R629 5.6K R628 3.3K R626 30K R625 R623R636 R621 R622 10u50 C607 1.5K R624 3.9K 3.9K 3.6K3.6K 7 6 5 4 3 2 1 10u25 C11 TP225 TP229 6uH L1 150 R248 150 R252 6.2K R250 47u25 100P C227 1.3K 3P C901 C229 6P 33K R256 470P C233 47P C231 10 R258 100 R254 100 R263 33 R289 1.8K R259 0.01 C243 1.8K R267 1.8K R2

45、69 220 R283 4.7 R285 1.8K R271 2W 0.1 R275 1.8K R273 2W 0.1 R277 4.7 R286 0.047 C239 R279 47K R280 47K R620 47K 510 R261 100 R265 0.047 C240 10 R282 10 R281 12K R619 100u10 C606 10K R618 VR3 220 4700P C237 4700P C235 100 150 47u251.3K R255 C228 100P 6.2K R251 150 R249 R253 C238 4700P R262 510 R278 0

46、.1 2W R274 R270 1.8K C902 3P TP188 C232 47P TP205 R266 100 TP182 R287 4.7 1.8K TP210 R257 33K C230 C234 470P VR4 TP190 220 TP186 R260 1.8K R290 33 R284 C244 0.01 C236 R268 1.8K 4700P R264 100 R288 4.7 1.8K 220 R272 TP209 2W R276 0.1 6P TP184 220u35 + C241 TP192 TP78 C4 10K R10R8 2.2M27K27K IN2+ REF

47、OUTCTRL C2 VCC IN2- E2 E1 TP83 C1 10u50 R11 16K CT RT C1 GND 8 7 6 C9 0.01 C2 1000P 10K TP85 0.1u50 3.3K R9 2.2u50 C12 TP81 TP88 R4 R26 390 100K R2 C3 R3 1.5K 47u25 R6 TH1 1K FBACK DTC IN1- 5 4 3 2 IN1+ 1 9 10 10 9 11 12 15 14 13 16 10K TP235 33K R604 R605 10K R606 R609 6.8K R607 R610 TP52 6.8K R608

48、 TP54 2020 TP51 TP234 TP53 5.6K R601 0.1u50 R602 47K R637 33K R603 51K R1R7 +B B + + + + + + + + + + IC7 KAC-6202 10K 10K 10K 10K 14.4V 0V 3.6V 5.0V 0V 14.4V 2.5V 0V 30.7V -30.7V 14.4V 14.4V 30.7V -30.7V B C E B EC 2SA817A-F 2SA992-A 2SC1627A-F 2SC1845-A 2SA1576A 2SC3419 2SB1375-F 2SD2012-F 2SC4081

49、DTA114EUA KAC-6202 8Parts with the exploded numbers larger than 700 are not supplied. EXPLODED VIEW 3 2 1 BA (X09-5900) J1 (X09-) S1 (X09-) VR1 (X09-) VR2 (X09-) S2 (X09-) J2 (X09-) J3 (X09-) F1 8 1 5 3 4 10 11 7 Bx7 Bx5 Fx7 Ex2 Ex2 Ex2 Ex2 Ex2 Cx2 Bundled to the transister. Ex2 722 702 721 712 720 E E E E E E C D D A C C C E E E A B C D E 4x8 2.6x12 3x10 3x6 3x8 : N09-6218-05 : N09-6312-05 : N80-3010-43 : N83-3006-43 : N89-3008-48 KAC-6202 9 Indicates safety critical components. New parts Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No.