Kenwood-KACX-10-D-Service-Manual 电路图 维修手册.pdf

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1、 2006-12 PRINTED IN JAPAN B53-0487-00 (N) 719 POWER AMPLIFIER KAC-X10D SERVICE MANUAL This product uses Lead Free solder. Accessories (W01-1606-05) Dressing Panel (A21-6568-01) : K type (A21-6569-01) : M type Screw set (N99-1794-05) Screw set (N99-1766-05) Modular cable (E30-6240-15) Mouting hardwar

2、e (J22-0301-14) Remote control (X16-6000-10) K type only M type only 6m Fuse (40A) (F52-0016-05) KCA-WR10 RadioFans.CN 收音机爱 好者资料库 KAC-X10D 2 BLOCK DIAGRAM L R ISO-AMP IC1 IC2 ISO-AMP R L IC4 (1/2) L/R MIX VOLIC5 (2/2),6,7 BOOST BASS IC8 L.P.F MUTE Q2 ATT Q3,4IC38 LIMIT 1 I.F.S 25Hz 15Hz IC9 IC10 (2/

3、2) AMP SUMMING IC11 COMP TIME IC14,16 DEAD SHIFT LEVEL Q6,7Q8-11 DRIVE MOS-FET Q701-704 FINAL WAVE IC10 (1/2) TRIANGLE DET ON/OFF DET OVERLOAD IC13 COMP IC34 Q301,302 POWER DRIVE Q16-19 IC35 DC-OFFSET IC12 (1/2) I.N.V D-AMP Q5,22 ON/OFF LC FILTER L1 LC FILTER TIME DEAD IC15,16 SHIFT Q14,15 LEVEL Q70

4、5-708 MOS-FET FINAL Q319-322 15V AVR Q325 AVR +HB B DC/DC IC36 CON THERMAL DET IC37 NF AMP IC17 (0.2-5V) LINE IN LINE OUT S1 S1 LINE OUT SEL. SENS. IC4 (2/2) FREQ (40-200Hz) REM LEVEL FREQ 0-18dB 40-100Hz SP-OUTPUT (BTL) 600W / 2 300W / 4 600W / 1 POWER INDI. P-CON BATT. GND I.S.F SEL. S2 AUDIO UNIT

5、 (X09-8590-10) Ref. No.Application / FunctionOperation / Condition / Compatibility IC1,2Isolation AMPRemoval of common mode noise on input signal IC3Buffer AMPBuffer AMP for RCA output IC4Mixing AMP and buffer AMPIt mixes input stereo signals into monaural signals. GAIN=0dB IC57Bass Boost circuit (r

6、emote control operation) It boosts signals by the operation of the remote control. GAIN=0+18dB, fc=40100Hz IC8L.P.F40200Hz-24dB/oct IC9I.S.FOFF/15Hz/25Hz switchable-24dB/oct IC10D-class phase input AMP IC11PWM signal generating circuit Generation of triangular wave, and generation of PWM signal by c

7、omparing triangular and sine wave. IC12Triangular wave reversal and DC servo circuitIt feeds back the triangular wave reversal and DC voltage offset. IC13PWM signal generating circuit and latch circuit Circuit to generate PWM signal by comparing triangular and sine wave. Circuit to latch when 1 load

8、 is detected. COMPONENTS DESCRIPTION RadioFans.CN 收音机爱 好者资料库 KAC-X10D 3 Ref. No.Application / FunctionOperation / Condition / Compatibility IC1416Dead time generating circuitIt generates dead time not to penetrate the high-side and low-side PWM signal. IC17NF circuitIt applies negative return from o

9、utput to D-class first phase. IC31Short-circuit detectionDetection of short-circuit between output and GND IC32ASO and short-circuit detectionDetection of current-voltage and output short-circuit. IC33Detection signal latchIt latches detection signal for a given length of time. IC34Detection circuit

10、 It sends detection signal to each circuit when a failure is detected, and turn off the circuit. IC35Rectifying circuitIt rectifies output voltage. IC36DC/DC converterIt generates signals to make dual power supply from single power supply. IC37Mute circuitIt generates Mute signal. IC38ClipperIt limi

11、ts the audio signal amplitude and suppresses power when 1 is detected. IC39Resonance detectionIt detects resonance generated in output short-circuit. Q24ATT,MUTEIt applies ATT-1,ATT-2 and MUTE. Q5,225V-SWIt controls ON and OFF of D-class AMP gate driver circuit power supply 5V. Q621Level shift and g

12、ate drive.It performs D-class AMP level shift and MOS-FET gate drive. Q301Abnormal voltage detectionIt turns off P-CON when abnormal voltage is applied to power supply. Q302,303,307,308PW-SWIt turns on AMP main body when it detects voltage in P-CON. Q304,305MUTE-SWIt turns on and off MUTE. Q306PW (O

13、FF)-SW It turn off AMP power when abnormal detections (over current, short- circuit and DC offset) is detected. Q309312DC/DC-FET driveDC/DC-FET gate driver Q313318DC/DC-FETSwitching FET for generating AMP secondary power supply Q31932215V power supplyIt generates 15V from secondary power supply B. Q

14、323,324Tracking circuitIt adjusts 15V attenuation curve when power is turned off. Q325High-tap power supply circuitIt generates +HB higher than +B to drive MOS-FET. Q326,327,337339Current balance detectionIt detects the current balance on + and - side while it detects the current. Q328,329Output vol

15、tage rectifying circuitIt applies bias on the signal with output voltage rectified. Q330334DC offset detectionIt detects abnormal output DC voltage. Q335Failure SWIt generates detection signals when a failure occurs. Q3361 detection malfunction prevention circuit It prevents malfunction of 1 detecti

16、on in voltage instability when AMP power is turned on. Q701708MOS-FETIt amplifies the switching level to B. COMPONENTS DESCRIPTION RadioFans.CN 收音机爱 好者资料库 KAC-X10D 4 NF Circuit It applies NF from rear and front of LC filter. For BTL output, it receives each output by differential amplification and a

17、pplies feedback to the first phase. IC17 IC10 (2/2) (1/2) TP244 TP161 TP247 TP246 TP250 TP249TP248 TP252 TP157 TP251TP254 TP245 TP253 6 5 710K R107 C59 56P 1000P C60 47u25 C85 1K R105 1 3 2 8 1K R172 3.3K R171 5W 2.2 R162 5W 2.2 R163 10 C74 24K R161 3.3K R170 12K R169 0.056 C77 12K R168 0.056 C76 R1

18、65 24K R166 24K R167 24K R164 24K 0.015 C70 0.015 C71 24K R160 10 C75 1M R106 L5 L6 2.2 C72 2.2 C73 10K R108 + POWER AMP OUTPUT + (RECTANGULAR WAVE) POWER AMP OUTPUT - (RECTANGULAR WAVE) POWER AMP OUTPUT + (SINE WAVE) POWER AMP OUTPUT - (SINE WAVE) NF CIRCUIT SIGNAL INPUT NF SIGNAL LINE IC39 (2/2) D

19、347D346 D349D350 D348 (1/2) IC39 6 4 85 7 47K R438 3300P C352 0.01 C353 0.033 C354 0.033 C355 10K R441 22K R440 1K R443 1K R445 0.033 C356 0.022 C357 10K R444 47K R446 3300P C358 1 2 3 47K R447 47K R439 2.2K R442 to CONTROL CIRCUIT RESONANCE WAVEFORM PICK UP LPF POWER AMP OUTPUT + (SINE WAVE) POWER

20、AMP OUTPUT - (SINE WAVE) Resonance Detection Circuit It detects resonant waveforms generated at output when the power AMP output is dead-shorted (0). It sends detected signals to the control circuit. IC33IC33 (2/4) D325 D342 D326 D331D344 (1/4) TP266 TP265 TP260 TP259 TP258 TP262 TP264 TP255 TP263 T

21、P267 TP407 4.7K R380 15K R379 20K R378 1000P C334 4 6 5 14 1 3 7 2 10K R434 10K R433 1K R432 1000P C336 0.047 C337 1K R387 330K R388 7 8 V+ 6 5 1 3 2 4 V- 2 V+ 7 81 6 5 3 4 V- 1K R381 10K R383 1K R382 1000P C349 10K R384 10K R386 1K R385 +15VA -15VA IC32 IC31 PULSE DURATION SHAPING CIRCUIT 10mS PALS

22、E DURATION OUTPUT UNUSUAL DETECTION CIRCUIT DETECTION CIRCUIT OUTPUT Hi/Lo (NORMAL : Hi) +5V Pulse Shaping Circuit It detects with either one of abnormal detections (current volt- age, resonance detection or unbalance current detection) at the previous phase. It generates a certain width of pulse ab

23、out 10msec even if input pulse width is small when input is pulled by Lo. CIRCUIT DESCRIPTION KAC-X10D 5 Abnormal Detection Circuit It compares signal levels of the current detecting circuit and output voltage rectification circuit with a comparator. If current voltage, the detecting circuit operate

24、s to stop D-class cir- cuit. In the current detecting circuit, current flows into only one side of the detecting resistance when one side of output is dead- shorted to GND. Q326 Q337 Q338Q339 Q327 D325 D342 D331D344 TP260 TP238 TP259 TP258 TP240 TP261 TP239 TP255 TP241 TP405 TP407 5W 0.02 R157 3.3K

25、R374 1000P C333 3.3K R375 33K R376 62K R408 33K R424 2.2K R377 4.7K R380 15K R379 20K R378 1000P C334 10K R434 10K R433 1K R432 3K R853 3.6K R409 1000P C350 3K R430 7 8 V+ 6 5 1 3 2 4 V- 2 V+ 7 81 6 5 3 4 V- 1K R381 10K R383 1K R382 1000P C349 10K R384 5W 0.02 R156 +15VA -15VA IC32 IC31 Q329 IC35 IC

26、35 Q328 (1/2) (2/2) D329 D330 TP279 TP278TP281 TP280 TP284 TP283 TP274 TP282 TP277 TP275 1 3 4 28 7 5 6 0.68 C339 220K R396 1K R398 10K R397 10K R402 12K R403 1.3K R404 10u50 C341 20K R405 10u50 C342 10K R406 20K R399 20K R401 20K R400 0.01 C340 24K R407 +15VA + + POWER AMP + OUTPUT OUTPUT VOLTAGE R

27、ECTIFICATION CIRCUIT RESONANCE DETECTION SIGNAL CURRENT DETECTION DETECTION CIRCUIT OUTPUT Hi/Lo (NORMAL : Hi) +B +5V +15V -15V -B FET FET 1 Detection Circuit The detecting circuit operates and limits the input signal when the level sent from the current detecting circuit exceeds a cer- tain level.

28、(Diode clip) It detects at the current level that flows only when 1 is ap- plied, and does not cancel unless P-con is turned off. (Latch circuit) IC38 IC38 Q336 (2/2) (1/2) D339D340 D345 TP146 TP145 TP144 TP184 TP183 TP397 TP398 TP399 38 4 2 1 5 6 7 5.6K R67 3.9K R95 30K R425 43K R426 10K R427 4.7K

29、R437 1 C351 100K R435 10K R428 81 4 3 2 6 5 7 V- V+ 15K R421R422 4.3K 1K R847 1000P C348 R423 15K 1K R436 IC13 CURRENT DETECTION LEVEL INPUT SIGNAL (to POWER AMP) INPUT SIGNAL (for SMALL SIGNAL) RATCH CIRCUITDIOD CLIPER It detects also unbalance operation. Resonance detecting signals detected with t

30、he new circuit description X10D_2 are also input to this circuit causing ab- normal detection. CIRCUIT DESCRIPTION KAC-X10D 6 ABCDE 1 2 3 4 5 6 7 C82C83 C24 C341 C903C902 W2 C84 C25 C28 C61 GDSGDSGDSGDSGDSGDS BEBE BEBEBEBE BEBE BE E BE C329 C332 C22 C820 C822C823 C826C827 C832C833 C828C829 C821 C824

31、C825C837C838 C32 C31 C68C69 C26 C76 C77 C C305 C3 C330 C338 C346 C347 R45 C3 C4 C15 C16 C17C18 C35 C49 C50 C51 C52 C53 C54 C57 C70 C71 C74 C75 C78 C79 C327 C328 C342 R1 R2 R31 R32 R69 R70 R71 R158R159 R160 R161 R164 R165 R166 R167 R168R169 R359 W101W102 R163 W103 R851 L6L5 W105 C73C72 R162 W104 VR1V

32、R2 C85 J1 Q12 Q20 D320 D321 D322 D323 J2 P2 Q8 Q9 Q16 Q17 Q18 Q325 Q703Q704 Q705Q706Q707Q708 Q15 Q7 S1 S2 AUDIO UNIT X09-8590-10 (J76-0347-01) PC BOARD (COMPONENT SIDE VIEW) KAC-X10D 7 JIHGF 1 2 3 4 5 6 7 W3 W4 C902 W2 C324 GDSGDS BE EB EBEB EBEB BE BE EB BE BE BE DSGDSGDSGDSGDSGDSG EB C325 W109 W11

33、1 C301 C302 C304 C305 C310 C314 C315 C316 C317 C320 C321 C322C323 W113 W108 L1 L2 W110 R347 R348 C308 C312 C313 C318 C319 C326 C327 L3 R301 R345 R346 L4 W106W107 W112 R157 W114 W115 W116 R156 C908 Q319Q322 D302 D301 J3 P1 Q313 Q314 Q315 Q316 Q317 Q318 D316 D317 D320 D321 D322 D323 Q9 Q10 Q303 Q320 Q

34、321 Q325 Q326 Q327 Q701Q702 Q338 Q339 Q337 P3 Refer to the schematic diagram for the values of resistors and capacitors. X09-8590-10 Ref. No.Address Q72E Q82E Q92E Q102F Q122D Q152D Q162B Q172B Q182B Q202C Q3036F Q3133H Q3144H Q3154H Q3164H Q3175H Q3185H Q3191G Q3202G Q3212H Q3221H Q3254E Q3262G Q32

35、72G Q3372G Q3382G Q3392G Q7012F Q7022G Q7032D Q7042E Q7052B Q7062B Q7072D Q7082C KAC-X10D 8 KLMNO 1 2 3 4 5 6 7 R353 R324 R357 -15V+15V +B -B BATTGND P-CON OUT+OUT- R817 R846C843 C306 C307 C309 C802 R42 R82 R85 R R87 R128 R303R304 R316 R321R323 R325 R328 R330 R332 R333 R334 R337 R338 R349R350 R354 R

36、376 C303 C311 C333 R83 R84 R122 R123 R124 R125 R126 R127 R129 R130 R131 R132 R133 R134 R135 R136 R137 R138 R14 R143 R302 R305 R306 R307 R308 R309 R310 +HB THERM R311 R312 R313 R314 R315 R317 R318 R319 R320 R322R326 R327 R329 R331 R335R336 R339R340R341R342 R343 R344 R351 R352 R355 R356 R358 R374 R375

37、 R429 R802 R810 R811R812 R813 TH1 R853 C350 R424 R408 R430 R409 R858 C905R903 C906 R904 C907 41 85 18 916 BE EB B E B E B E B E B E BEBE BEBE BE B EB E BE EB Q323 D8 D309 D318D319 Q6 Q301 Q302 Q305 Q306 Q310 Q311 Q324 D304 D305 D306 D307 D308 D310 D311 D312 D314 D315 D324 Q11 Q13 Q304 Q307 Q308 Q309

38、 Q312 D313 IC9 IC36 AUDIO UNIT X09-8590-10 (J76-0347-01) PC BOARD (FOIL SIDE VIEW) KAC-X10D 9 TSRQP 1 2 3 4 5 6 7 C343 C81 R113 R363 R369 C80 R818 R819R821 R824R825 R829 R832 C62 C65 C335 R1115VR114 R119 R384 R389 -15V +15V R360 R373 R817 R820R822 R823R826 R830 R833 C33 R48 C344 R410 R411 R91 R425 R

39、379 R383 R391 R393 R397 R403 R421 C9C10 C19 C20 C29 C41 C42 C43 C44 C45 C47 C58 C63 C64 C66 C67 R19 C334 C339C340 C345 C348 R13R14 R20 R23 R24 R25 R26 R29 R30 R34 R37 R38 R41 42 R66 R68 R81 R82 R85 R86 R87 R90 R101 R102 R108 R120 R121 R145 R364 R367 R370 R378R380 R67 R382 R388 R390 R395 R396R404 R40

40、6 R414 R415 R416 R418 R419 R422 C1 C2 R3R4 R7R8 R15R16 C5C6C7C8 C11C12 C13C14 C21 C23 R431 C30 C37 C46 C48 C55 C56 C59 C60 R5R6 R9 R10 R11R12R17R18 R21 R22 R27 R28 R33 R35 R36 R39 R40 R43 R44 R46 R49 R50 R51 R52 R53 R55R56 R57 R60 R63R64 R73R74R75 R76 R77 R78 R79R80 R83 R84 R88 R89 R92 R93 R94 R95 R

41、96 R97 R98 R99 R100 R103 R104 R106 R107 R109R110 R112 R115R116R117 R118 R139 R140 R141 R142 R143 R144 R146 R147 R148 R149 R150 R151 R152 R153 R154 R155 R172 R173 C331 R361R362 R365 R366 R368 R371 R372 R377 R385 R386 R387 R392 R394 R398R399 R400 R401 R402 R405 R407 R850 R413 R417 R420 R423 R426 R427

42、R428 R177 R178 R180 R65 W201 C336C337 R842 C839 R843 C840 R844 C841C842 R845 R439 R438 C352 R443 C357 R444 C354R440C353 R442 C355R441 C349 R433 R381 R434 R432 R412 R436 C351 R437 R435 R847 C358 R446 R447 C356 R445 R858 C901 C904 R901 R902 1 148 7 58 14 814 17 814 17 58 14 58 14 58 14 58 14 58 14 58

43、14 58 14 58 14 58 14 58 14 58 14 58 14 58 14 71 814 41 85 41 85 41 85 41 85 41 85 41 85 17 814 R171 R170 R105 R179 B E B E B E B EB E BE BE B E B E B EB EB E BE B E BE B E BE D1 D3 D5 D19 Q22 D2 D4 D6 D8 D341 Q330 Q332 D325 Q328 D7 D12 D15 D20 D23 D326 Q2 Q3 Q4 Q329 Q331 Q333 Q334 D9 D10 D11 D14 D16

44、 D17 D18 D21 D22 D25 D26 D327 D328 D329 D331 D332 D334 D335 D336 D337 D339 D340 D343 D338 Q5 Q14 Q19 Q21 D344 D27 D28 D347 D346 D348 D342 Q335 D333 Q336 D345 D349 D350D24 D13 D330 IC14IC15IC16 IC33 IC9 IC11 IC12IC38 IC17 IC31IC32 IC34IC35IC37 IC13 IC6 IC39 IC3IC1IC8IC4 IC10 IC5 IC2 IC7 D1 SWITCH UNI

45、T (REMOTE CONTROL) X16-6000-10 (J76-0408-01) J1 R3 13 24 C1 VR2 LEVEL FREQ +5V GND VR1 R2 R1 Refer to the schematic diagram for the values of resistors and capacitors. X09-8590-10 Ref. No.Address IC16Q IC26Q IC36R IC46P IC55P IC65P IC75P IC86P IC96O IC103R IC113R IC123Q IC133R IC142Q IC152R IC162Q I

46、C173Q IC315Q IC325Q IC335R IC344Q IC354Q IC366L IC374R IC383R IC394R Q24Q Q34Q Q44Q Q52R Ref. No.Address Q62N Q112N Q132O Q142R Q192Q Q212P Q222R Q3016M Q3026N Q3045N Q3055N Q3066L Q3076L Q3086L Q3095L Q3106L Q3116L Q3126L Q3232L Q3242L Q3284Q Q3294Q Q3304Q Q3314P Q3324Q Q3334Q Q3344P Q3354Q Q3363Q

47、KAC-X10D 10 ABCDE 1 2 3 4 5 6 7 J2 J1 D7 D3D6 IC5 (2/2) IC38 D5 IC5 D1 IC38 IC12 D4 D2 IC9 Q2 S1 IC8 IC8 IC10 IC1 IC4 (1/2) (1/2) (1/2) (1/2) (1/2) (1/2) (2/2) (2/2) (2/2) (1/2) D9 D8 D27D28 D16 D339D340 INPUTRL OUTPUTLR (2/2) IC1 (2/2) IC2 (1/2) IC2 (2/2) IC3 IC3 (1/2) L.P.F I.S.F D17 Q3Q4 D18 40-2

48、00Hz 24dB GAIN-0 OF J1 D1 B30-1764-05D1 : ISO TP57 TP113 TP173 TP128 TP83 TP91 TP48 TP149 TP TP162 TP117 TP69 TP127 TP39 R 4 TP47 TP161 TP116 TP131 TP81 TP38 TP51 TP152 TP107 TP59 TP115 TP130 TP143 TP50 TP119 TP134 TP84 TP41 TP54 TP155 TP62 TP118 TP133 TP146 TP40 TP53 TP154 TP109 TP132 TP145 TP44 TP

49、52 TP121 TP78 T TP144 TP43 TP56 TP157 TP112 TP120 T TP148 VR2 50K TP42 TP9 TP156 TP55 TP111 TP124 TP126 TP147 TP46 TP102 TP160 TP110 TP123 TP125 TP45 TP101 TP58 TP114 TP122 TP129 R84 9.1K TP49 TP66 TP393 TP394 TP410 10u50 C3 4.7K R5 1K R1 1000P C1 10K R3 10K R4 1000P C2 10K R7 10K R8 1K R2 10u50 C4 4.7K R6 R9 10K C7 47P C8 47P R10 10K R15 10K R45 5.6K R16 10K 10K R11 C9 100P R13 10K R17 10K C13 100P C14 100P C10 100P R14 10K 10K R18 3 2 1 2 4 1 3 4 8 6 5 7 1 R819 10u50 C822 10u50 C823 1 R820 10u50 C15 10u50 C16 10K R12 10u50 C17 1K R31 4.7K R35 100 R844 7P C841 100 R845 7P C