Kenwood-XXV-02-A-Service-Manual电路原理图.pdf

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1、 2005-4 PRINTED IN JAPANB53-0283-00 (N)1553POWER AMPLIFIERXXV-02ASERVICE MANUAL* Depends on the destination. Refer to the parts list.012345 67893030FUSE(30A 2) POWER INRESETREMOTETO H/UID NUMBERVOLTFANCURRTEMPMENUHeat sink(F01-1796-01)Screw & Wrench key set(N99-1770-15)Screw set(N99-1577-15)Accessor

2、y(W01-1606-05)Screw(N07-0003-08)Screw(N09-4214-08)Fuse (30A)(F52-0015-05)channel Power Amplifier432channelPowerAmplifier432* Cover(F07-xxxx-xx)“eXcelon“ is not printedon European Model“eXcelon“ is not printedon European Model* Dressing plate(A21-xxxx-xx)XXV-02A2BLOCK DIAGRAM PREAMPLIFIER UNIT (X08-4

3、240-10)Ref. No Application / Function Operation / Condition / CompatibilityIC1 (1/4, 2/4) : Ach HPF, (2/4) : ALch buffer, (3/4) : BRch invert bufferIC2 Bch infrasonic filterIC4 (1/4, 2/4) : Bch HPF, (3/4, 4/4) : Bch LPFIC5 Bch bufferIC6 (1/2) : BLch buffer, (2/2) : BRch invert bufferIC7 LCD driver,

4、key scanIC8 Bch E-VOL ICWhen AMP-CON SW ON, from H/U (via Lx-Bus) changesound by AMP-CONTROLCOMPONENTS DESCRIPTION(X09-5940-10)(X08-4240-10)ISOLATIONHIGHAMPLIFIERRL BUFFERVR3IC3Q42Q41MUTE1DIFFERENTIALSTAGEQ305,307,311Q306,308,312IC1Q320,322STAGEB-CLASSQ323,325RLIC3VR5IFSIC2Q405,407,411Q43Q423,425Q40

5、6,408,412Q44Q424,426DC DETECTOROVER LOADQ56,57,60,61Q30,31CIRCUITP. CONOVER VOLTAGECIRCUITI DETECTORBU DETECTORP-SWSW5VBU5VQ25DC/DCCONVERTERQ17,18,26AVRPOP NOISE CIRCUITMUTE2Q22901,902Q50-53FANRST ICE2PROMI2C COMMUNICATIONto AMP5L COMMUNICATIONto H/ULOGO LEDDIP SWDISPLAYLCDDRIVER ICLCDKEY LED+BMUTE1

6、DIFFERENTIALSTAGE STAGEB-CLASSMUTE1DIFFERENTIALSTAGE STAGEB-CLASSMUTE1DIFFERENTIALSTAGE STAGEB-CLASSVR1VR1PASSBUFFERAMPLIFIERISOLATIONAMPLIFIERISOLATIONAMPLIFIERISOLATIONPASSHIGHHIGHPASSLOWPASSHIGHPASSPASSLOWBUFFERBUFFERVR2IFSCONTROLAMPICSW5RCA INRCA INRCA INRCA INACHBCHVR4IC1IC1IC1IC2 IC3VR2VR5VR4S

7、W5VR3IC3SPOUTOUTSPOUTSPOUTSPTHERMALPROTECTIONDETECTORDETECTORV-DOWNQ11-16,u-COMBUPCONVCC15V/-15VCOMMUNICATIONI2CVV6db 6db 27dbXXV-02A3COMPONENTS DESCRIPTION AUDIO UNIT (X09-5940-10)Ref. No Application / Function Operation / Condition / CompatibilityIC1,2 Input isolation amplifierIC3 MicroprocessorIC

8、4 Microprocessor reset ICIC6 Current detection circuit voltage amplificationIC8 LX communication LX-CLK, LX-DATA-M comparatorIC9 AMP I2C communication signal level converterIC10 Switching regulatorQ1 14V power supply for LX communication circuit and AMP communication ICQ2 VDD 5V AVRQ710 FET driveQ11

9、16 DC/DC converterQ17,26 +15.6V AVRQ18,27 -15.6V AVRQ20,21 Switching regulator power switchQ22,24 VDD 5V AVRQ25 SW5VQ30,31 Standby, P-CONQ4144 Mute driverQ5053 Shock noise preventionQ54 MuteQ56,57 Output DC abnormal voltage detectionQ58 Logo LED power supplyQ59 LCD illumination power supplyQ61 Over

10、current detection and protectionQ6267 Fan operation circuitQ73,77 BU over voltage detectionQ74,75 FET drive low start switchQ8083 LX communication input signal level converterQ84 LX communication circuit power supply and AMP communication IC1 power switchQ85,86,90,9296,98 LX communication output sig

11、nal level converterQ91 14V power supply for LX communication circuit and AMP communication ICQ210 Ach first stage differential amplifierQ212,311,411,412 Temperature compensation biasQ301309,312Ach first stage differential amplifierQ314,319,321Q315318,415418 Over current detection and protectionQ320,

12、322,323,325 Ach final current amplifierQ401410 Bch first stage differential amplifierQ423-426 Bch final current amplifierQ901,902 DC/DC converterQ905,906,945,946,967 1dB attenuation circuitXXV-02A4AMP_SCL LX_REQ_MLX_REQ_SLX_DATA_MLX_DATA_SLX_CLKLX_RSTHU_BUAD-IAD-VTEMP1TEMP2TEMP3TEMP4TEMP5TEMP6COMM-S

13、WD-PWERPOWER-ON5VSWV_DOWNPCONLX_CONL_DATA_LL_DATA_AL_CLKL_CEFAN1FAN2AMP_SDAAUDIO_SCLAUDIO_SDAAUDIO_MUTEE2P_SCLE2P_SDALCD-ILLWHITE-LEDMUTE1MUTE2DIP-SW1DIP-SW2DIP-SW3DIP-SW4MODEL1MODEL2DC-DETD-CURAB-CURATT1ATT2ATT3AMP -com784224YGC117Audio controlAMP communication I/F LX BUS I/FDisplay data monitorPow

14、er supply controlLCD driver I/FFan controlDestination, AMP IDProtection controlIllumination controlMute controlE2PROM I2Ccommunication MICROPROCESSOR : 784224YGC117 (X09 : IC3) Block Digram Terminal FunctionPin No. Pin Name I/O Function Processing Operation Description13 TEMP4TEMP6 I Temperature det

15、ection 464AVSS - GND5 L_CE O CE output to LCD driver H : LCD driver CE6 LX_REQ_S O Data transmit request to H/U H : OFF, L : ON7AVREF1 - DA reference voltage8 L_DATA_L I Data input from LCD driver9 L_DATA_A O Data output to LCD driver10 L_CLK O CLK output to LCD driver11 LX_DATA_M I Data input from

16、H/U12 LX_DATA_S O Data output to H/U13 LX_CLK I CLK input from H/U14 LX_BU I LX BUS communication, H/U connect detection H : Not connect (Except master amplifier), L : Connect15 NC O Not used16 SDA_AMP I/O Data input/output AMP communication17 NC O Not usedMICROCOMPUTERS TERMINAL DESCRIPTIONXXV-02A5

17、Pin No. Pin Name I/O Function Processing Operation Description18 SCL_AMP I/O CLK input/output AMP communication19 AUDIO_SCL I/O CLK input/output with audio chip20 AUDIO_SDA I/O Data input/output with audio chip21 AUDIO_MUTE O Mute output to audio chip H : Mute OFF, L : Mute ON22 E2P_SCL I/O CLK inpu

18、t/output with E2PROM23 E2P_SDA I/O Data input/output with E2PROM24 NC O Not used2528 DIP-SW1DIP-SW4 I AMP address setting29 MODEL1 I Model setting 130 MODEL2 I Model setting 231,32 NC O Not used33 VSS1 - GND3437 NC O Not used38 LCD-ILL O LCD backlight switch H : ON, L : OFF39 WHITE-LED O Triangle il

19、lumination switch H : ON, L : OFF40 NC O Not used4143 ATT1ATT3 O Output attenuate due to rise in temperature 13 H : Attenuate, L : Not attenuate44,45 NC O Not used46 COMM-SW O Communication IC power switch H : ON, L : OFF4750 NC O Not used51 D-PWER O D class amplifier power supply control H : ON, L

20、: OFF (2ch/4ch L fixed)52 DC-DET I Speaker output DC voltage detection H : Normal, L : Abnormal53 NC O Not used54 POWER-ON O Amplifier power supply control H : ON (D/AB class), L : OFF55 5VSW O 5VSW H : OFF, L : ON56 MUTE1 O Amplifier section input stage mute control H : OFF, L : ON57 MUTE2 O Driver

21、 stage pop-noise mute control H : OFF, L : ON58 FAN1 O Fan rotation control H : Operate, L : Stop59 FAN2 O Fan speed control H : Low speed, L : High speed60 RESET - Hard reset H : Normal, L : Reset61 PCON I Amplifier power control H : OFF, L : ON62 LX_CON I LX-BUS communication control H : OFF, L :

22、ON63 LX_REQ_M I Data receive request from H/U H : ON, L : OFF64 NC O Not used65 V_DOWN I Momentary power down detection H : ON (Power down detection), L : OFF (L fixed)66 NC O Not used67 VSS0 - GND68 VD1 - VDD69 X2 - Main clock input 170 X1 - Main clock input 2MICROCOMPUTERS TERMINAL DESCRIPTIONXXV-

23、02A6 Logic Table1) DestinationThe destination in AMP does not mean the sales regions butspecific models.The following are the models. When reset is released, it ischecked only once.Model name MODEL1 (29pin) MODEL2 (30pin)KAC-PS811D/X811D Low LowKAC-PS521/X521 Low HighKAC-PS621/X621 High LowKAC-PS541

24、/X541 High HighPin No. Pin Name I/O Function Processing Operation Description71 TEST - Flash ROM writing72 XT2 - Not used73 XT1 - Not used74 VDD0 - VDD75 AVDD - VDD76 AD-I I First current detection (for display)77 AD-V I BU voltage detection (for display)7880 TEMP1TEMP3 I Temperature detection 13MIC

25、ROCOMPUTERS TERMINAL DESCRIPTION2) AMP IDAMP ID is checked only ohce at the time reset is released orwhen the microcomputer is released from the low consump-tion mode.When set to AMP ID 8/9 no remote control is possible.AMP IDDIP-SW1 DIP-SW2 DIP-SW3 DIP-SW4(25pin) (26pin) (27pin) (28pin)0 High High

26、High High1Low High High High2 High Low High High3Low Low High High4 High High Low High5Low High Low High6 High Low Low High7Low Low Low High8 High High High Low9Low High High Low3) Fan speedOperation FAN1 (58pin) FAN2 (59pin)Stop Low High/LowLow speed High HighHigh speed High LowXXV-02A7CIRCUIT DESC

27、RIPTIONAD-I(2/2)IC6(1/2)IC6AMP RECTMPU AD-PORTOUTPUTVOLTAGEDETECTIONLEVEL10u35 2701K10K75615K0.01 0.0110K181K6832220L54+10K10KJ3Q95Q96Q93Q90to H/UH/U GNDCONSTANTCURRENTAMPGNDfromMPU3421117812610591347 47REQCH/U-GND100K12K1.5K1.5K20KIC9J4 D93D91to OTHER AMPRECEIVETRANSMISSONto MPUTRANSMISSONRECEIVEBO

28、TH DIRECTIONBUFFER42314.3K 4.3K27027095710118610u2510K1.8K1.8KVCCSX GNDRX TXTYSY RY678 53214CLKDATANo. Item Alignment Point Method Align For Note Fig.VR5 (ALch)1 IDEL CURRENTVR6 (ARch) Connect a DC voltmeter2.5mVAfter Power on PC boardVR7 (BLch) between check land. 2 minutes (X09-)VR8 (BRch)ADJUSTME

29、NT Current detection circuitAmplify and rectify potential differences attwo points in the primary-side current circuitand send it to the AD-port of the MPU andobtain data for displaying current value. Constant current output circuitRemove troubles caused by the potentialdifferences between the const

30、ant currentoutput and the GND, so that the GND po-tential differences between the H/U and theAMP is not overlapped in the AMP to H/Ucommunication. I2C bufferUsing an IC for I2C communication, be-tween-AMP communication is conducted sothat there will be no trouble from GND po-tential differences.XXV-

31、02A8A B C D E1234567PC BOARD (COMPONENT SIDE VIEW)CN1D1PREAMPLIFIER UNIT X08-4240-10 (J76-0011-02)R210R211C1C2C51C29C28C33C34C53R9R111R215R51R217R55C110C49C19R249R250C18C11C201R200R101R102R105R107R108R110R115R116R128R129C202C203C204R201C30C31C900C901C902C903C904C905R1 R2R3 R4R7 R8R12R13R14R15R18R19R

32、20R21R26R27R28R29R38R43R53R54R60R61C3 C4C5 C6C7C8C906C22C23C24C25C32C50C103C104C105C106C109R5 R6R16R17R22R23 R24R25R32R33R35R36R37R42R50 R52R103R104R112R114R122R126R202R203R204R205R206R207R208R209R230 R231R232R248C76C61 C62C72C73R233R213R237 R238R239R240R241R242R243R244R245 R246R2471781430 111633 48

33、4964321714851714 81714 811011 20148512C2113C52 C75C27C20050Hz 200HzC9C10C12C15C16C14C17503CC20C26C36503CHI PASSVR2LOW50Hz 200HzPASS1HPFBchVR1C63C64OFF LPFC102200mV103A5VINPUT SENS50Hz503C200HzHI PASSVR31VR415VINPUT SENS103A124200mVC115C114AchVR5C107HPFON OFFBch1B M SI.S.FON OFFMONO ST1ONMONO STOFFAc

34、h1C101C108IC1IC2IC4IC8IC7IC5IC6CN2WH2D2S8S9S7S6S2S5S4S3ED2S1Refer to the schematic diagram for the values of resistors and capacitors.X08-4240-10Ref. No. AddressIC1 2DIC2 6DIC4 5CIC5 6CIC6 6BIC7 4BIC8 6DXXV-02A9JIHGF1234567PC BOARD (FOIL SIDE VIEW)PREAMPLIFIER UNIT X08-4240-10 (J76-0011-02)TP54TP172

35、TP173TP174TP23TP25TP63TP24TP16TP14TP152TP175TP1TP2TP3TP4TP5TP6TP7TP8TP9TP10TP11TP12TP13TP15TP17TP18TP19TP20TP21TP22TP26TP27TP28TP29TP30TP31TP32TP33TP34TP35TP36TP37TP38TP39TP40TP41TP42TP43TP44TP45TP46TP47TP49TP52TP53TP55TP56TP57 TP58TP60TP61TP62TP64TP65TP66TP67TP68TP69TP70TP71TP72TP73TP74TP75TP76TP77

36、TP78TP79TP80TP81TP82TP83TP84TP85TP86TP87TP88TP89TP90TP91TP92TP93TP94TP95TP96TP98TP99TP100TP101TP102TP103TP104TP105TP106TP107TP108TP109TP110TP111TP112TP113 TP114TP115TP116TP117TP118TP119TP120TP121TP122TP123TP124TP125TP126TP127TP128TP129TP130TP131TP132TP133TP134TP135TP136TP137TP138TP139TP140TP141TP142

37、TP143TP144TP145TP146TP147TP148TP149TP150 TP151TP153TP155TP156TP157TP158TP159TP160TP161TP162TP163TP164TP165TP166TP167TP168TP169TP170TP171TP51Refer to the schematic diagram for the values of resistors and capacitors.XXV-02A10K L M N O1234567PC BOARD (FOIL SIDE VIEW)DC voltmeter2.5mVDC voltme2.5mVDC vo

38、ltmeter2.5mVVR6VR5D85D152D68Q52D158Q57D201D101D200D100D107D93D91D63D102D202D11Q30D62D87D80D81D82D66D67 D78D76Q97Q91Q81D88Q95Q86Q84Q96D9Q85Q93 D83Q98Q90Q94Q92D84D72D71Q63Q64Q62D958 Q967Q25D12Q31Q1D406D4Q73Q77Q24Q2Q56Q61Q65D70Q54Q60D151D305D301D29Q41Q42Q905 D915 Q906Q945D955Q946Q43D302D203D155D69Q50D3

39、06D304Q51Q53D30Q44D157D154 D153Q82Q83Q80D401D405Q99Q17 Q18Q22D17D8D13Q27J4Q26Q58Q59Q66Q67Q210Q212Q301Q302Q303Q304Q305Q306Q307Q308Q309Q311Q312Q314Q315Q316Q317Q318Q319Q320Q321Q322Q323Q325Q401Q402Q403Q404Q405Q406Q407Q408Q409Q417Q421Q425J1P1J8J3S7S6CN4IC1IC8IC2IC3IC4IC9AUDIO UNITX09-5940-10 A/2 (J76-013

40、2-01)W530TH3R40R568W550W656C34R123R194R100R294C33R296C226W669R125C131R109C105R126C132R124R590R620R550R472W614W613R549C516C517C503R204R203C202R196C126C125C225C107C124C224C37C101R103C509C512C201W632 C507W582W707R514R506R602R513R504W589C232R172R170R107R226R225C231R223R110C106R108W645R224C206R209C205R27

41、0R272R208R207R210R200C38R539W635W634W622R607 R606R540R542R560R541R531C510W615C511R510R517R530R548R546C31C82C32W618 L9W713W575W595C513W587R537W571W570W573W596W555R964C53W600W705W717W719W718W558R544W569R967W610W702W552W559R60W548W551R66R62R58R63R45W546R86R578R571W557W556W544W554 R82W545R83W536R87R98C7

42、8W712W659W587W639R357R351W606W623R974TH2W651W627W638TH1R79R74R73R80R408W579W577R464 C464R228W701W567R406W560W561R358R360W583W578R410W542W700R405W566W594W598W581W568W547W565W703R20W537W534C13W533W584W562W564R509W523W527R421W524RW531W529W526W5R409W662W661C113W667W666W668R112W660R111W663W664W665C114W70

43、4W657W658W601R205R105R195R295W643C213R104C102R605 W706W576R611R604C504R511C30R241W642R106W653W652R212R211C214R206R567C7W655R579 R569C9W647W644 R565C8C6W714W631W636R536R535W629R543R528R527R526W621W624W612W626W628R505 C501W633W630C502C55W605R610W574W716W553R524C515W602R532W572W599 R518R522R534 R533R54

44、5R519R520R515 W585W590R32W593W591R570W563R970R961R47R521R59R48R46R65R64R555R556R580W535R91 R90R576R574W549R563R577R96 C70R561W543C76R81R84R562R97R99R564R323R307 R305R127R301R303C303W603W709W625 W620 W619W637R934R315R309R311R355R313W648R317W649R365W711R366R933R905 R906W654R325W650W646W640W641R310R973

45、R945R128R302 C304R304R356R324R946R314R312W617R306 R308R318R316W604C352C354R326W611W616R339R331 R337C321 C319 R329R67R69R68R70R72R71R76R75R78W607C322R412R411R451R423R227R424R466R465R402R404C404R452C403W597W586R401R330 R340R232R403R414R413W539W540W541W538W528R338 C320W580W588R19C21R21C22R582 R566 R581

46、R508R507R93 R92W525R407R453 R417R429C419R439 R431C421W52241581714 814 8171234114 58213129514813420604140216180W710W715EBBARALOUT BLAR129230W325C19W319 W317W229W1W2W365R4C20C69C85C52C29C5C17C27C28C51C54C77C80C81C86C100C161C200C307 C308C364R364C350C351C407R463C408C461C506R603C508W408W250W376W238W233W2

47、08R25R26W294W313W316W315C72C103C104C115C116C150C203C204C215C216C250C301 C302C305C306C309C363C310C311 C312C313 C314C315C316C401C402C405C406C409C463C410C411C412C413C414R22R17R101R102R161R197 R201R202R297R319 R320R321 R322R328R333R334R335R341R342R343R344C353 C355R345R346R347R348R359R361R370R371R419R420

48、R422R435R443R447R455R459R461R500R501R502R503R512R516R523R525R572R573R600R601W344W253W275W244W251W254W242W243W388W409W405W237W354W330W329W422W421W394 W392W396W359W248W240X1W401W395W370W358W353W357W333W339W283W282W280W279W249W221 W2W363W351 W309W285W266W338W216W288W270W210W423W391W284W206W207W215W218W

49、217W220W224W219W223W368W236C255W340W327W334W296W306 W304 W300 W298W295W289W286W384W383W382W381W322W433W323W324W227W256W320W321W346W369W355W375W386W374W385W411W410 W403W406W398W407W404 W399W402 W397W389W387W415W417W419W416W413W412W377W378W379W380W239W366W371W367W364W348W349W350W247W400W200W232W361W414R363W393 W390W299W342W343W335W278W277W281W293W292W302W352W341W345W269W310W307W230W182W303W311W272W235W258W234W255W276W301W312W297W372W265W362W418W420W337W326W328W331W373W305W356W360W314W267W271W263W264W260W257W245W268W332W203W222W259W252W246W226W241 W22