Kenwood-KACX-542-Service-Manual 电路图 维修手册.pdf

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1、Heat sink (F01-3534-01) Screw washer (N07-0003-08) Screw washer (N09-4214-08) Fuse (30A) (F52-0015-05) Cover (F07-1178-02) Screw & Wrench key set (N99-1770-15) Screw set (N99-1577-15) Accessory (W01-1606-05) Dressing panel (A21-6506-02) VOLTFAN CURRTEMP MENU 0 1 2 3 4 5 6 7 8 9 30 30 FUSE(30A2)POWER

2、 IN RESETREMOTETO H/UID NUMBER Panel (A64-3925-02) 2006-1 PRINTED IN JAPAN B53-0375-00 (N) 589 POWER AMPLIFIER KAC-X542 SERVICE MANUAL RadioFans.CN 收音机爱 好者资料库 KAC-X542 2 BLOCK DIAGRAM PREAMPLIFIER UNIT (X08-4160-11) Ref. NoApplication / FunctionOperation / Condition / Compatibility IC1(1/4, 2/4) : A

3、ch HPF, (2/4) : A-Lch buffer, (3/4) : B-Rch invert buffer IC2Bch infrasonic filter IC4(1/4, 2/4) : Bch HPF, (3/4, 4/4) : Bch LPF IC5Bch buffer IC6(1/2) : B-Lch buffer, (2/2) : B-Rch invert buffer IC7LCD driver, key scan IC8Bch E-VOL IC When AMP-CON SW ON, from H/U (via Lx-Bus) change sound by AMP-CO

4、NTROL COMPONENTS DESCRIPTION (X09-5780-11) (X08-4160-11) ISOLATION HIGH AMPLIFIER R LBUFFER VR3 IC3 Q42 Q41 MUTE1 DIFFERENTIAL STAGE Q305,307,311 Q306,308,312 IC1 Q320,322 STAGE B-CLASS Q323,325 R L IC3 VR5 IFS IC2 IC3 Q405,407,411 Q43 Q423,425 Q406,408,412 Q44 Q424,426 DC DETECTOR OVER LOAD Q56,57,

5、60,61 Q30,31 CIRCUIT P. CON OVER VOLTAGE CIRCUIT I DETECTOR BU DETECTOR P-SW SW5V BU5V Q25 DC/DC CONVERTER Q17,18,26 AVR POP NOISE CIRCUIT MUTE2 Q22 901,902 Q50-53 FAN RST IC E2PROM I2C COMMUNICATION to AMP 5L COMMUNICATION to HEAD UNIT LOGO LED DIP SW DISPLAY LCD DRIVER IC LCD KEYLED+B MUTE1 DIFFER

6、ENTIAL STAGESTAGE B-CLASS MUTE1 DIFFERENTIAL STAGESTAGE B-CLASS MUTE1 DIFFERENTIAL STAGESTAGE B-CLASS VR1 VR1 PASS BUFFER AMPLIFIER ISOLATION AMPLIFIER ISOLATION AMPLIFIER ISOLATION PASS HIGH HIGH PASS LOW PASS HIGH PASS PASS LOW BUFFER BUFFER VR2 IFS CONTROL AMP IC SW5 RCA IN RCA IN RCA IN RCA IN A

7、CH BCH VR4 IC1 IC1 IC1 IC2IC3 VR2 VR5 VR4 SW5 VR3 IC3 SP OUT OUT SP OUT SP OUT SP THERMAL PROTECTION DETECTOR DETECTOR V-DOWN Q11-16, u-COM BU PCON VCC 15V/-15V COMMUNICATION I2C V V 6db6db27db RadioFans.CN 收音机爱 好者资料库 KAC-X542 3 COMPONENTS DESCRIPTION AUDIO UNIT (X09-5780-11) Ref. NoApplication / Fu

8、nctionOperation / Condition / Compatibility IC1,2Input isolation amplifier IC3Microprocessor IC4Microprocessor reset IC IC6Current detection circuit voltage amplification IC8LX communication LX-CLK, LX-DATA-M comparator IC9AMP I2C communication signal level converter IC10Switching regulator Q114V po

9、wer supply for LX communication circuit and AMP communication IC Q2VDD 5V AVR Q710FET drive Q1116DC/DC converter Q17,26+15.6V AVR Q18,27-15.6V AVR Q20,21Switching regulator power switch Q22,24VDD 5V AVR Q25SW5V Q30,31Standby, P-CON Q4144Mute driver Q5053Shock noise prevention Q54Mute Q56,57Output DC

10、 abnormal voltage detection Q58Logo LED power supply Q59LCD illumination power supply Q61Over current detection and protection Q6267Fan operation circuit Q73,77BU over voltage detection Q74,75FET drive low start switch Q8083LX communication input signal level converter Q84LX communication circuit po

11、wer supply and AMP communication IC1 power switch Q85,86,90,9296,98LX communication output signal level converter Q9114V power supply for LX communication circuit and AMP communication IC Q210Ach first stage differential amplifier Q212,311,411,412Temperature compensation bias Q301309,312 Ach first s

12、tage differential amplifier Q314,319,321 Q315318,415418Over current detection and protection Q320,322,323,325Ach final current amplifier Q401410Bch first stage differential amplifier Q423-426Bch final current amplifier Q901,902DC/DC converter Q905,906,945,946,9671dB attenuation circuit RadioFans.CN

13、收音机爱 好者资料库 KAC-X542 4 AMP SCLLX REQ M LX REQ S LX DATA M LX DATA S LX CLK LX RST HU BU AD-I AD-V TEMP1 TEMP2 TEMP3 TEMP4 TEMP5 TEMP6 COMM-SW D-PWER POWER-ON 5VSW V DOWN PCON LX CON L DATA L L DATA A L CLK L CE FAN1 FAN2 AMP SDA AUDIO SCL AUDIO SDA AUDIO MUTE E2P SCL E2P SDA LCD-ILL WHITE-LED MUTE1 M

14、UTE2 DIP-SW1 DIP-SW2 DIP-SW3 DIP-SW4 MODEL1 MODEL2 DC-DET D-CUR AB-CUR ATT1 ATT2 ATT3 AMP -com Audio control AMP communication I/FLX BUS I/F Display data monitor Power supply control LCD driver I/F Fan control Destination, AMP ID Protection control Illumination control Mute control E2PROM I2C commun

15、ication MICROPROCESSOR (X09 : IC3) Block Diagram Terminal Function Pin No.Pin NameI/OFunctionProcessing Operation Description 13TEMP4TEMP6ITemperature detection 46 4AVSS-GND 5L CEOCE output to LCD driverH : LCD driver CE 6LX REQ SOData transmit request to head unitH : OFF, L : ON 7AVREF1-DA referenc

16、e voltage 8L DATA LIData input from LCD driver 9L DATA AOData output to LCD driver 10L CLKOCLK output to LCD driver 11LX DATA MIData input from head unit 12LX DATA SOData output to head unit 13LX CLKICLK input from head unit 14LX BUILX BUS communication, head unit connect detectionH : Not connect (E

17、xcept master amplifier), L : Connect 15NC-Not used 16SDA AMPI/OData input/output AMP communication 17NC-Not used MICROCOMPUTERS TERMINAL DESCRIPTION KAC-X542 5 Pin No.Pin NameI/OFunctionProcessing Operation Description 18SCL AMPI/OCLK input/output AMP communication 19AUDIO SCLI/OCLK input/output wit

18、h audio chip 20AUDIO SDAI/OData input/output with audio chip 21AUDIO MUTEOMute output to audio chipH : Mute OFF, L : Mute ON 22E2P SCLI/OCLK input/output with E2PROM 23E2P SDAI/OData input/output with E2PROM 24NC-Not used 2528DIP-SW1DIP-SW4IAMP address setting 29MODEL1IModel setting 1 30MODEL2IModel

19、 setting 2 31,32NC-Not used 33VSS1-GND 3437NC-Not used 38LCD-ILLOLCD backlight switchH : ON, L : OFF 39WHITE-LEDOTriangle illumination switchH : ON, L : OFF 40NC-Not used 4143ATT1ATT3OOutput attenuate due to rise in temperature 13H : Attenuate, L : Not attenuate 44,45NC-Not used 46COMM-SWOCommunicat

20、ion IC power switchH : ON, L : OFF 4750NC-Not used 51D-PWEROD class amplifier power supply controlH : ON, L : OFF (2ch/4ch L fixed) 52DC-DETISpeaker output DC voltage detectionH : Normal, L : Abnormal 53NC-Not used 54POWER-ONOAmplifier power supply controlH : ON (D/AB class), L : OFF 555VSWO5VSWH :

21、OFF, L : ON 56MUTE1OAmplifier section input stage mute controlH : OFF, L : ON 57MUTE2ODriver stage pop-noise mute controlH : OFF, L : ON 58FAN1OFan rotation controlH : Operate, L : Stop 59FAN2OFan speed controlH : Low speed, L : High speed 60RESET-Hard resetH : Normal, L : Reset 61PCONIAmplifier pow

22、er controlH : OFF, L : ON 62LX CONILX-BUS communication controlH : OFF, L : ON 63LX REQ MIData receive request from head unitH : ON, L : OFF 64NC-Not used 65V DOWNIMomentary power down detectionH : ON (Power down detection), L : OFF (L fixed) 66NC-Not used 67VSS0-GND 68VD1-VDD 69X2-Main clock input

23、1 70X1-Main clock input 2 MICROCOMPUTERS TERMINAL DESCRIPTION KAC-X542 6 Logic Table 1) Destination The destination in AMP does not mean the sales regions but specific models. The following are the models. When reset is released, it is checked only once. Model nameMODEL1 (pin 29)MODEL2 (pin 30) KAC-

24、X812DLowLow KAC-X522LowHigh KAC-X542HighHigh Pin No.Pin NameI/OFunctionProcessing Operation Description 71TEST-Flash ROM writing 72XT2-Not used 73XT1-Not used 74VDD0-VDD 75AVDD-VDD 76AD-IIFirst current detection (for display) 77AD-VIBU voltage detection (for display) 7880TEMP1TEMP3ITemperature detec

25、tion 13 MICROCOMPUTERS TERMINAL DESCRIPTION 2) AMP ID AMP ID is checked only once at the time reset is released or when the microcomputer is released from the low consump- tion mode. When setting AMP ID to 8 or 9, remote control is impossible. AMP ID DIP-SW1DIP-SW2DIP-SW3DIP-SW4 (pin 25)(pin 26)(pin

26、 27)(pin 28) 0HighHighHighHigh 1LowHighHighHigh 2HighLowHighHigh 3LowLowHighHigh 4HighHighLowHigh 5LowHighLowHigh 6HighLowLowHigh 7LowLowLowHigh 8HighHighHighLow 9LowHighHighLow 3) Fan speed OperationFAN1 (pin 58)FAN2 (pin 59) StopLowHigh/Low Low speedHighHigh High speedHighLow KAC-X542 7 CIRCUIT DE

27、SCRIPTION AD-I (2/2) IC6 (1/2) IC6 AMP RECT MPU AD-PORT OUTPUT VOLTAGE DETECTION LEVEL 10u35 270 1K 10K 7 5 6 15K 0.010.01 10K 1 8 1K 68 3 2 220 L5 4 + 10K 10K J3 Q95 Q96 Q93 Q90 to Head unit Head unit GND CONSTANT CURRENT AMP GND from MPU 3421 11 78 12 6 10 5 9 13 4747 REQC Head unit-GND 100K 12K 1

28、.5K 1.5K 20K IC9 J4D93 D91 to OTHER AMP RECEIVE TRANSMISSON to MPU TRANSMISSON RECEIVE BOTH DIRECTION BUFFER 42 3 1 4.3K 4.3K 270 270 9 5 7 10 11 8 6 10u25 10K 1.8K 1.8K VCCSX GND RX TX TY SY RY 6 7 8 5 3 2 1 4 CLK DATA No.ItemAlignment PointMethodAlign ForNoteFig. Connect a DC voltmeter between VR5

29、 (A-Lch)the following emitter resistors. PC BOARD 1IDEL CURRENT VR6 (A-Rch)R347 (A-Lch) 2.5mV Over 2 minutes on page 10 VR7 (B-Lch)R348 (A-Rch)aging is required. and 11. VR8 (B-Rch)R447 (B-Lch) R446 (B-Rch) ADJUSTMENT Current detection circuit Amplify and rectify potential differences at two points

30、in the primary-side current circuit and send it to the AD-port of the MPU and obtain data for displaying current value. Constant current output circuit Remove troubles caused by the potential differences between the constant current output and the GND, so that the GND po- tential differences between

31、 the head unit and the AMP is not overlapped in the AMP to head unit communication. I2C buffer Using an IC for I2C communication, be- tween-AMP communication is conducted so that there will be no trouble from GND po- tential differences. KAC-X542 8 ABCDE 1 2 3 4 5 6 7 PC BOARD (COMPONENT SIDE VIEW)

32、CN1 D1 PREAMPLIFIER UNIT X08-4160-11 (J76-0011-12) R210 R211 C1 C2 C51 C29 C28 C33 C34 C53 R9 R111 R215 R51 R217 R55 C110 C49 C19 R249 R250 C18 C11 C201 R200 R101 R102 R105 R107 R108 R110 R115 R116 R128 R129 C202 C203 C204 R201 C30 C31 C900 C901 C902 C903 C904 C905 R1 R2 R3 R4 R7 R8 R12 R13 R14 R15

33、R18 R19 R20 R21 R26 R27 R28R29 R38 R43 R53 R54 R60 R61 C3 C4 C5 C6 C7 C8 C906 C22 C23 C24 C25 C32 C50 C103 C104 C105 C106 C109 R5 R6 R16 R17 R22 R23 R24 R25 R32 R33 R35R36 R37 R42 R50 R52 R103 R104 R112 R114 R122 R126 R202 R203 R204 R205 R206 R207 R208 R209 R230 R231 R232 R248 C76 C61C62 C72C73 R233

34、 R213 R237R238 R239 R240 R241 R242 R243 R244 R245 R246 R247 1 78 14 301 116 3348 49 64 32 17 1 4 8 5 17 148 17 148 110 1120 14 85 12 C21 13 C52 C75 C27 C200 50Hz 200Hz C9 C10 C12 C15 C16 C14 C17 503C C20 C26 C36 503C HI PASS VR2 LOW 50Hz 200Hz PASS 1 HPF Bch VR1 C63 C64 OFFLPF C102 200mV 103A 5V INP

35、UT SENS 50Hz 503C 200Hz HI PASS VR3 1 VR4 1 5V INPUT SENS 103A 124 200mV C115 C114 Ach VR5 C107 HPF ONOFF Bch 1 B M SI.S.F ONOFF MONOST 1 ON MONOST OFF Ach 1 C101 C108 IC1 IC2 IC4 IC8 IC7 IC5 IC6 CN2 WH2 D2 S8 S9 S7 S6 S2 S5 S4 S3 ED2 S1 Refer to the schematic diagram for the values of resistors and

36、 capacitors. X08-4160-11 Ref. No.Address IC12D IC26D IC45C IC56C IC66B IC74B IC86D KAC-X542 9 JIHGF 1 2 3 4 5 6 7 PC BOARD (FOIL SIDE VIEW) PREAMPLIFIER UNIT X08-4160-11 (J76-0011-12) TP54 TP172 TP173 TP174 TP23 TP25 TP63 TP24 TP16 TP14 TP152 TP175 TP1 TP2 TP3 TP4 TP5 TP6 TP7 TP8 TP9 TP10 TP11 TP12

37、TP13 TP15 TP17 TP18 TP19 TP20 TP21 TP22 TP26 TP27 TP28 TP29 TP30 TP31 TP32 TP33 TP34 TP35 TP36 TP37 TP38 TP39 TP40 TP41 TP42 TP43 TP44 TP45 TP46 TP47 TP49 TP52 TP53 TP55 TP56 TP57 TP58 TP60 TP61 TP62 TP64 TP65 TP66 TP67 TP68 TP69 TP70 TP71 TP72 TP73 TP74 TP75 TP76 TP77 TP78 TP79 TP80 TP81 TP82 TP83

38、TP84 TP85 TP86 TP87 TP88 TP89 TP90 TP91 TP92 TP93 TP94 TP95 TP96 TP98 TP99 TP100 TP101 TP102 TP103 TP104 TP105 TP106 TP107 TP108 TP109 TP110 TP111 TP112 TP113TP114 TP115 TP116 TP117 TP118 TP119 TP120 TP121 TP122 TP123 TP124 TP125 TP126 TP127 TP128 TP129 TP130 TP131 TP132 TP133 TP134 TP135 TP136 TP13

39、7 TP138 TP139 TP140 TP141 TP142 TP143 TP144 TP145 TP146 TP147 TP148 TP149 TP150TP151 TP153 TP155 TP156 TP157 TP158 TP159 TP160 TP161 TP162 TP163 TP164 TP165 TP166 TP167 TP168 TP169 TP170 TP171 TP51 Refer to the schematic diagram for the values of resistors and capacitors. KAC-X542 10 KLMNO 1 2 3 4 5

40、 6 7 PC BOARD (FOIL SIDE VIEW) DC voltmeter 2.5mV DC voltm 2.5mV DC voltmeter 2.5mV VR6 VR5 D85 D152 D68 Q52 D158 Q57 D201 D101 D200 D100 D107 D93 D91 D63 D102 D202 D11 Q30 D62 D87 D80 D82 D66 D67 D78 D76 Q97 Q91 Q81D88 Q95 Q86 Q84 Q96 D9 Q85 Q93 D83 Q98 Q90 Q94 Q92 D84 D72 D71 Q63 Q64 Q62 D958 Q967

41、 Q25 D12 Q31 Q1 D406 D4 Q73 Q77 Q24 Q2 Q56 Q61 Q65 D70 Q54 Q60 D151 D305 D301 D29 Q41 Q42 Q905 D915 Q906 Q945 D955 Q946 Q43 D302 D203 D155 D69 Q50 D306 D304 Q51 Q53 D30 Q44 D157 D154 D153 Q82 Q83 Q80 D401 D405 Q99 Q17 Q18 Q22 D17 D8 D13 Q27 J4 Q26 Q58 Q59 Q66 Q67 Q210 Q212 Q301 Q302 Q303 Q304 Q305 Q

42、306 Q307 Q308 Q309 Q311 Q312 Q314 Q315 Q316 Q317 Q318 Q319 Q320 Q321 Q322 Q323 Q325 Q401 Q402 Q403 Q404 Q405 Q406 Q407 Q408 Q409 Q417 Q421 Q425 J1 P1 J8 J3 D81 S7 S6 CN4 IC1 IC8 IC2 IC3 IC4 IC9 AUDIO UNIT X09-5780-11 A/2 (J76-0008-11) W530 TH3 R40 R568 W550 W656 C34 R123 R194 R100 R294 C33 R296 C226

43、 W669 R125 C131 R109 C105 R126 C132 R124 R590 R620 R550 R472 W614 W613 R549 C516 C517 C503 R204 R203 C202 R196 C126 C125 C107 C225 C124 C224 C37 C101 R103 C509 C512 C201 W632 C507 W582 W707 R514 R506 R602 R513 R504 W589 C232 R172 R170 R107 R226 R225 C231 R223 R110 C106 R108 W645 R224 C206 R209 C205

44、R270 R272 R208 R207 R210 R200 C38 R539 W635 W634 W622 R607R606 R540 R542 R560 R541 R531 C510 W615 C511 R510 R517 R530 R548 R546 C31 C82 C32 W618L9 W713 W575 W595 C513 R610 W571 W570 W573 W596 W555 R964 C53 W600 W705 W717 W719 W718 W558 R544 W569 R967 R464 C464 W610 W702 W552 W559 R60 W548 W551 R66 R

45、62 R58 R63 R45 W546 R86 R578 R571 W557 W556 W544 W554 R82 W545 R83 W536 R87 R98 C78 W712 W659 W639 R357 R351 W606 W623 R974 TH2 W651 W627 W638 TH1 R79 R74 R73 R80 R408 W579 W577 R228 W701 W567 R406 W560 W561 R358 R360 W583 W578 R410 W542 W700 R405 W566 W594W598 W581 W568 W547 W565 W703 R20 W537 W534

46、 C13 W533 W584 W562W564 R509 W523 W527 R421 W524 W531 W529 W526 W R409 W662 W661 C113 W667 W666 W668 R112 W660 R111 W663 W664 W665 C114 W704 W657 W658 W601 R205 R105 R195 R295 W643 C213 R104 C102 R605 W706 W576 R611 C504 R604 R603 R511 C30 R241 W642 R106 W653W652 R212R211 C214 R206 R567 C7 W655 R579

47、 R569 C9 W647 W644 R565 C8 C6 W714 W631 W636 R536R535 W629 R543 R528 R527 R526 W621 W624 W612 W626 W628 R505 C501 W633 W630 C502 C55 W605 R537 W574 W716 W553 R524 C515 W602 R532 W572 W599 R518 R522 R534 R533 R545 R519 R520 R515 W585 W590 R32 W593 W591 R570 W563 R970 R961 R47 R521 R59 R48 R46 R65 R64

48、 R555 R556 R580 W535 R91 R90 R576 R574 W549 R563 R577 R96 C70 R561 W543 C76 R81R84 R562 R97 R99 R564 R323 R307 R305 R127 R301 R303 C303 W603 W709 W625 W620 W619 W637 R934 R315 R309 R311 R355 R313 C363 W648 R317 W649 R365 W711 R366 R933 R905 R906 W654 R325W650 W646 W640 W641 R310 R973 R945 R128 R302

49、C304 R304 R356 R324 R946 R314 R312 R364 C364 W617 R306 R308 R318 R316 W604 R326C352 C354 W611 W616 W587 R339 R331 R337 C321 C319 R329 R67 R69 R68 R70 R72 R71 R76 R75 R78 W607 C322 R412 R411 R451 R423 R227 R424 R466 R465 R402 R404 C404 R452 C403 W597 W586 R401 R330 R340 R232 R403 R414 R413 W539 W540 W541 W538 W528 R338 C320 W580 W588 R19 C21 R21 C22 R582 R566 R581 R508 R507 R93 R92 W525 R407 R453 R417 C419 R439 R431 C421 W522 41 58 17 148148 17 1 2 34 1 1 4 5 8 2 13 12 9 5 1 4 8 1 34 20 60 41 40 21 61 80 W710 W715 EB B ARAL OUT BLAR 129 230 W325 C19 W319 W317 W229 W1 W2 W365