Kenwood-XXV-03-A-Service-Manual电路原理图.pdf
© 2005-4 PRINTED IN JAPANB53-0282-00 (N)1553POWER AMPLIFIERXXV-03ASERVICE MANUAL* Depends on the destination. Refer to the parts list.VOLTFANCURRTEMPMENU012345 6789252525RESETREMOTETO H/UID NUMBERPOWER INHeat sink(F01-1795-01)Screw(N07-0003-08)Screw(N09-4214-08)Fuse (25A)(F52-0014-05)* Cover(F07-xxxx-xx)Screw & Wrench key set(N99-1770-15)Screw set(N99-1577-15)Accessory(W01-1606-05)Subwoofer Power AmplifierSubwooferPowerAmplifier“eXcelon“ is not printedon European Model“eXcelon“ is not printedon European Model* Dressing plate(A21-xxxx-xx)XXV-03A2BLOCK DIAGRAM PREAMPLIFIER UNIT (X08-4230-10)Ref. No Application / Function Operation / Condition / CompatibilityIC1 ISF Cutting super-low range of audio signalIC2 (1/43/4) BRF Cutting bandwidth of audio signalIC2 (4/4) INV Phase reversal of audio signalIC3 OP amplifier Voltage amplification, BufferIC4 E-VOL Electronic volumeIC5 LPF Cutting high-range of audio signalIC6 LCD driver LCD driver AUDIO UNIT (X09-5930-10)Ref. No Application / Function Operation / Condition / CompatibilityIC1 Isolation amplifier Prevent noise from GND potential differenceIC2 (1/2) Triangular wave generation Reference signal for digitizing analog signalIC2 (2/2) Error amplifier Error is compensated by the feedback from outputIC3 Comparator, Triangular wave generation Digitizing by comparison of analog signal and triangular waveCOMPONENTS DESCRIPTIONLINELINE INAMPCONT.DRIVERLCDCOMPARATORDEADTIMETRIANGLEWAVELOADOVERDRIVERMUTEDCOFFSETDET.CURRENTINPUTVOLTAGECONTROLFANOVERVOLTAGEMEASURE DET.SWITCHPOWER15VAVRAVR+5V+5VSWITCHSWITCHACCRESSROMCORRECTICRESETTHERMALPROTECTBUFFERI2CVOLTAGEDET.DOWNP CONDET.AMPMUTECOMPARATORISOLATORCONTDET. DET.ISO I.F.S B.R.F INVL.P.FLCDIC4IC3IC3IC5IC2 IC2IC1ED1IC6IC1Q10 IC2,3 IC4,5IC2Q9Q52-557828,37-40,42-45,48-51Q15,18,19,21,22,27,IC6Q73,IC16Q1-4IC15IC11Q20 84,110Q106-108IC13Q80 IC14 Q63 Q66Q62D.D CONu-COMQ83IC1029,30,Q25,26,SP OUTP CONBATTGNDOUTto H/UREMOTEINDFAN15/25Hz FREQON/OFF OFF/6/12 NOR/REVON/OFFLEVELLED FANAVR 5V SW5V 15VFREQBACKLIGHTD PWR(X08-4230-10)(X09-5930-10)XXV-03A3Ref. No Application / Function Operation / Condition / CompatibilityIC4,5 NAND D class section reverse wave, deadtime, generation and rectificationIC6 Comparator Short circuit detection of SP outputIC7 Signal amplification For SP output short-circuit detection, send the output to comparatorIC10 Element operation control Communication, display, protection, etc. controlIC11 Reset Reset signal is output when voltage goes below standard voltageIC13 DC/DC converterVoltage on secondary side, which produces the drive signal for switchingelement, will be limited to below standard voltageIC14 Signal amplification To have µcom display current value, amplify potential differences of GNDIC15 Bi-directional buffer Send/Receive data and clock between AMPIC16 Comparator Receive from H/U data and clockQ1,2,5,7 Digital signal transmission Send LX-REQ-M signal to H/UQ3,4,6,8 Digital signal transmission Send LX-DATA-S signal to H/UQ9 Mute Mute drive signal generationQ10 Mute Turn audio signal OFFQ15,18,19,21,22,27,Signal amplification, switching D class section voltage or current amplificationQ28,3740,4245Q16,17 Voltage control Match the beginning of the fall to +15V when -15V power supply is OFFQ20 Voltage control 5V power supply ON/OFFQ23,24,35,36,41,83 Voltage control Fan voltage ON/OFF and limiting over voltageQ25,29,84 AVR +15VQ26,30,110 AVR -15VQ31,33,46,109 Voltage control D class section predrive stage power supply ON/OFFQ47 AVR D class section first stage supplementary power supplyQ52-55 Voltage current converter Over current detection when SP is shortedQ57,58,60,61,Switching DC/DC converter switchingQ64,65,6770Q59,63 Voltage control In order to have µcom display voltage value, send voltage to it only when 5V SW ONQ62 Voltage detection Pcon detectionQ66 Voltage detection Pcon over voltage detectionQ71,72 Waveform shaping For SP output short-circuit detection, send the output to comparatorQ73,78 Voltage detection DC detection of outputQ74-77 Current amplification Switching FET drive current amplificationQ79,80 Voltage control DC/DC converter power supply ON/OFFQ81,82 Voltage control DC/DC converter drive waveform ON/OFFQ88,89,98,99 Voltage control 5L digital signal receptionQ95,96 Voltage control When Comm-SW of µcom is ON, turn communication system power supply ONQ97 Voltage control Normally 15V power supply and over voltage controlQ102,111 Voltage control When Comm-SW of µcom is ON, turn communication system 5V power supply ONQ103,104 Voltage control LCD backlight and illumination LED controlQ106-108 AVR µcom system 5V power supply.COMPONENTS DESCRIPTIONXXV-03A4AMP_SCL LX_REQ_MLX_REQ_SLX_DATA_MLX_DATA_SLX_CLKLX_RSTHU_BUAD-IAD-VTEMP1TEMP2TEMP3TEMP4TEMP5TEMP6COMM-SWD-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 µ-com784224YGC117Audio controlAMP communication I/F LX BUS I/FDisplay data monitorPower supply controlLCD driver I/FFan controlDestination, AMP IDProtection controlIllumination controlMute controlE2PROM I2Ccommunication MICROPROCESSOR : 784224YGC117 (X09 : IC10) Block Digram Terminal FunctionPin No. Pin Name I/O Function Processing Operation Description13 TEMP4TEMP6 I Temperature detection 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 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-03A5Pin 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 input/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 illumination 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 : 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 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 : 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-03A6 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/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 13MICROCOMPUTERS 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 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-03A7CIRCUIT DESCRIPTIONAD-ID59(2/2)IC14(1/2)IC14AMP RECTMPU AD-PORTOUTPUTVOLTAGEDETECTIONLEVEL10u35 2701K10K75615K0.01 0.0110K1813K4703247L54+10K10KJ1Q1Q2Q5Q7to H/UH/U GNDCONSTANTCURRENTAMPGNDfromMPU3421117812610591347 47REQCH/U-GND100K12K1.5K1.5K20KIC15J2 D77D76to OTHER AMPRECEIVETRANSMISSONto MPUTRANSMISSONRECEIVEBOTH DIRECTIONBUFFER42314.3K 4.3K27027095710118610u2510K1.8K1.8KVCCSX GNDRX TXTYSY RY678 53214CLKDATA 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 constant 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-03A8A B C D E1234567PC BOARD (COMPONENT SIDE VIEW)R60 C7C5R5R6R7R8R1R10C6R59R58R65R11R12R66R19C4R17R3R14R32R33R36C30C8R2C10C9C27C24R37R39C1 C2R45R43C29R27R28R29R34C13R16R53R42R20R52R54R4R46R26C34R25R48R50C35R21R13C11R61R56R67C12R62R63C28C18C31R47C36R49R51C38C33R55C21R22R23R24C19C47 C41C42C43C44C45C46R40R41R44C26R38R64C1664116334849 321714581714812214851148510201111111200Hz 40Hz 200Hz 50Hz 5V200mV24131R18 R57C3C20C14C15C17C22C23C25C32C37C39C40C48C49B.R.F LOW PASS INPUT SENSI.F.S I.F.SB.R.FI.N.V15Hz25Hz ONOFF6dB-12dBOFFONOFFONOFFAMP CONT503C503C 103AVR1 VR2VR3CN1D1S1 S5 S6S7S8D2ED1S2S3S4WH1IC6IC1IC2IC3IC5IC4PREAMPLIFIER UNIT X08-4230-10 (J76-0012-12)X08-4230-10Ref. No. AddressIC1 2BIC2 3BIC3 3DIC4 2DIC5 2CIC6 6CRefer to the schematic diagram for the values of resistors and capacitors.XXV-03A9JIHGF1234567PC BOARD (FOIL SIDE VIEW)TP3TP4TP84TP83TP38TP78TP2TP1TP5TP6TP7TP8TP9TP10TP11TP12TP13TP14TP15TP16TP17TP18TP19TP20TP21TP22TP23TP24TP25 TP26TP27TP28TP30TP31TP32TP33TP34TP35TP36 TP37TP40TP41TP42TP43TP44TP45TP46TP47TP48TP49TP50TP51TP52TP53TP54TP55TP56TP57TP58TP59TP61TP62TP63TP65TP66TP67TP68TP69TP70 TP71TP72TP73TP74TP75TP76TP77TP79TP80TP81TP82TP85TP86TP87TP88TP89TP90TP91TP92TP93TP94TP95TP96TP97TP98TP99TP100TP101TP102TP103TP104TP105TP106TP107TP108TP109TP110TP111TP112TP113TP114TP115TP116TP117TP118 TP119TP120TP121TP122TP124TP125TP126TP127TP128PREAMPLIFIER UNIT X08-4230-10 (J76-0012-12)Refer to the schematic diagram for the values of resistors and capacitors.XXV-03A10K L M N O1234567PC BOARD (FOIL SIDE VIEW)W332C17W429R119R193R287C11R78R114R84C47C42L1R42R102R241C46C130R70R321C134C116W383R7R14R21R23R31R33C19C52C108R19R40R41R43R128 R130 R135R147R209R243R260R261R311R301C2C4W421C14C23C25C26C30C34C36C48C49C50C53C61W458W459W461C83C107C111R305C133R3R13R18R32R34R36R68R72R77R80R92R100R105 R106R107R120R127R133R144W416W400R185R191R19R194R217RR224R322W363R267R268R269 R270R271 R272R312R313R304R306R282R283R284R285R286R295W353C7C10C21 C22C38C39C78C79W357W364W327W365C123W399W388R5 R15R20R22R24R25R27R28R29R30R35R37R38R39R46 R47 R48R50R52R65R66R71R73R79R82R83R86 R87R88R89R90R91R93R94R95R96R97R99R103R104R108R109R110R111R112R113R122R123R125R126R129R131R303R154R155R157R158R159 R160R176R177R181R183EEBEBBEBR184R187R189R190R201R206R211R220R221R223R225R226R227R232R234R235R236R237R238R240R254 R255R256R262 R263R288R289R291R292R293R294W468W450W404W392W443W438W418W437W439W432W430W431W419W389W417 W415W368W374W379W398W354W345W343W350W413W334W323W322W462W324W393W344W433W339W338W328W325W451W351W452W326W453R319C127C128W361W412W410W436W446W425W427W390W460W463W386W377W366W373W407W408W382W387W402W356W403W340W330W331W346W341W342W347W380W444W442W333W428W426W424 W422W434W464W440W441 W435W420W391C118 C117W397W371W362W375W395W394W401W448R1W370W405W411W414W367W381W378W385W348W358W396W376W369R2R152R153W372W384W359W352W423C125C126W409W469W329W445C131R320W45717814171481485801616041402120124385418513115812 913442485411458TESTVddCLKGSP-GND SP-OUTRESETTP10TP1TP47TP46TP15TP13TP48TP19TP49TP25TP24TP21TP22TP20TP27TP36TP32TP34TP33TP12TP9DATA-MDATACLK(ROM)(ROM)DATA-STP11TP37TP38TP39TP62TP61+BGND-BTP26TP2121222TP3TP4TP5TP6TP7TP8TP35TP31TP30TP17TP18TP16TP100TP101TP104TP105TP103TP102+15V-15VTP23BEBEBEBEBEBEBEBEBEBEBEBEBEBEBE BE BE BEBEBEBEBBBEEEBEEBEBBEBEBEBEBEBEBEBEBEBEBEBEBEBEBEL3W128W104C62SDEEEBBBBBEBEBEBEBEEBBEBEBEBEBE BE BE BEBEBEEGSDGSDGSDGC65C6W54C55R59R76C31C56R51C35C24C44C27C1C37C40C4117148C43C45C54C57C59C60C81C82C85C86C87C94C96C9C106C109W45C113W26R26R116R118R136C12C13C15C16C28C32C73C74C80C102C120W53R6R10R11R16R17R98R115R117 R121R124R132R134R137R138R139R142R143R148R149R150R151R161R162R164R165R166R167R168R169R172R173R178 R180C122R242R244R257R258R275SGEDBBER276W504W511W43 W40 W38W510W42W44W46W47W48W114W96W97W99W98W121W91W74W86W52W84W76X1W77W75W78W71W33 W30 W29W34W41W39W127W109W73W115R4W49W50W56W111W125W117 W113 W108W124W122W119W81W110W112W116W118W100W94W120W61W64W65W107 W101 W95W105W106W102W103W93W92W90 W89W88 W87 W85W82W72W126W83 W80 W79W67W68W62W69W70W57W66W63W60W59W58W31W32W51W55W36W25W37D94Q16D34Q102D77Q1Q3Q95Q20Q59D3D5D32D69D46D49D82D60 D61D62D76Q10Q17Q35Q41Q46Q62Q66Q73Q78Q88Q89Q96Q98Q99Q107Q108Q109D10D11D18D19D86D48D20D52D64D65 D70D71D80D81D26Q2Q4Q5Q6Q7Q8Q9Q24Q36Q63Q86Q97D33D17D91Q111CN3D51J1Q84D12 D14D13 D15Q26Q110D22D25Q39Q44D4D8D21D23D24D27D28D30D31J2D89Q15Q18Q19Q21Q22Q23Q27Q28Q29Q30Q31Q33Q37Q38 Q40Q42Q43 Q45Q48Q49 Q50Q51Q52Q53Q54Q55Q83Q103Q104Q106J4D92D93Q25S1 S6IC1IC4IC5IC2IC10IC11IC12IC16IC3IC15AUDIO UNIT X09-5930-10 A/2 (J76-0131-01)Refer to the schematic diagram for the values of resistors and capacitors.
